African Fusion July-August 2025

FUSION Journal of the Southern African Institute of Welding JULY-AUGUST 2025

AFRICAN

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Contents

July-August 2025 FEATURES 6 SAIW appoints Vicus Burger as Executive Director The appointment of Vicus Burger as Executive Director marks a significant step in the SAIW’s ongoing strategic renewal plan. 7 Shaping the future of welding excellence Lemogang Maclean is a beacon of inspiration for SAIW students, welding technologists, inspectors and professionals across the welding community. 8 AWT: Towards exemplary 21 st -century manufacturing AF talks to Thulani Mngomezulu, GM-CEO Designate of Applied Welding Technology (AWT), about the company’s new strategic direction. 10 How meaningful data and digitalisation can improve welding Matthias Schaffitz of Wolfram Industrie, talks about how digitalisation, process automation and programming are increasingly replacing the role of craftsmen in welding applications. 12 State-of-the-art consumables for the sugar industry Franz Rosenblatt of Voestalpine Böhler Welding outlines the development of a new consumable metallurgy for enhanced performance and weldability during roller arcing in sugar mills. 14 Swift-Cut Pro: for best-in-class CNC plasma cutting ESAB’s Swift-Cut Pro range is a high-end cutting solution at an “amazingly” low price, says ESAB’s Willie Burger. 16 Welding repair centre highlights commitment to customer service The expanded service, repair and calibration workshop at Bolt and Engineering Distributors’ new national distribution hub in Wadeville highlights the B.E.D. Group’s commitment to technical excellence and customer service. 19 Safety and NDT in complex, high-risk environments DEKRA Industrial RSA is positioned to offer expanded services across Southern Europe, the Middle East and Africa in safety, training and NDT services. 20 Powermax SYNC: smart and simple cutting and gouging Hypertherm® and local premier partner B.E.D. have partnered to deliver the advanced Powermax® SYNC plasma cutting solution, which is not only high-performing but also supported by in-depth after-sales service. 22 Malben Engineering’s data-centric approach to welding automation Quinten Ballot, Matthew Boodram and Cheslyn Reid of automotive component manufacturer, Malben Engineering, talk about the integral role of process control and inspection in ensuring consistent quality in safety-critical welded components. 24 20 years of CMT: unrivalled welding precision Fronius, an innovation leader in arc welding, is celebrating the 20 th anniversary of its revolutionary Cold Metal Transfer (CMT) welding process. 26 Nitraweld: the concession-free shielding solution transforming laser welding Nitralife MD, Tom Sowry, talks about his company’s new Nitraweld range of nitrogen generators for the delivery of on-demand, high purity nitrogen for modern laser welding machines. 28 Swiss Steel’s premium stainless steel welding wire range Swiss Steel MD, Mohamed Imran Kajee, introduces the Ugitech range of stainless steel and high-nickel welding wires available for direct distribution to South Africa’s fabricators. 31 Why businesses trust Unique Welding In the demanding world of fabrication, manufacturing, mining and construction, having the right welding partner isn’t a luxury – it’s a necessity. And for thousands of companies across Southern Africa, that partner is Unique Welding. REGULARS 3 Message from the President 4 Front cover story: Navigate application development and complex projects with Afrox. 32 Today’s technology: Electrochemical cleaning: The total solutions offering

Published three times a year and mailed out together with MechChem Africa by: Crown Publications (Pty) Ltd Crown House Cnr Theunis and Sovereign Streets Bedford Gardens 2007 PO Box 140 Editor: Peter Middleton E-mail: peterm@crown.co.za Advertising: Peter Middleton E-mail: peterm@crown.co.za Managing Director : Karen Grant Publisher: Wilhelm du Plessis Production & layout: Darryl James Circulation: Brenda Grossmann Printed by: Tandym Print, Cape Bedfordview 2008 Tel: (011) 622 4770 Fax: (011) 615 6108

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Johann Pieterse, MI Technical Man ager of Afrox, highlights Afrox’s long history of applications development for assisting its customers in imple menting complex projects efficiently and safely.

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www.africanfusionmagazine.co.za

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The SAIW has shaped technical excellence for over 77 years. Today, we’re forging a new chapter - anchored in credibility, driven by innovation, and focused on leading Africa’s welding and inspection future. From AI-powered training to global certifications, we’re not just rebuilding. We’re redefining. From legacy to leadership - this is the SAIW way forward. 77 YEARS STRONG. Just Getting Started.

from legacy to leadership SAIW2.0

Tel: 011 298 2100 • Email: training@saiw.co.za • www.saiw.co.za

Message from the president

I am pleased to say that after 78 years of traditional service, the SAIW is now transforming into a modern, digitalised provider of fit-for-purpose services and sup port for the welding and inspection industry. We have now appointed Vicus Burger as the new executive director, which demon strates our commitment to driving operation al efficiency and excellence. His experience in transformational business leadership and the integration of artificial intelligence into administrative processes will be instrumental in helping us to upgrade operational systems to meet modern benchmarks. At the heart of this renewal is the trans formation of service delivery levels and the provision of better support for our students and staff, SAIW personal and corporate members, all welders, and welding-related businesses in Southern Africa. To do this, we are implementing AI-driven business systems to help us manage all of our interactions and transactions. We have already established a new central Student Management System that will soon be accessible from a new SAIW website under development. This AI-driven system will replace a traditional database that required a lot of human input with a comprehensive automated system that will manage every aspect of a student’s records, from the time they enrol to the time they qualify. It will include ID-number and contact detail verification at the onset; it will give access to the course programmes and, on registration, to the materials; it will manage examinations and automatically upload re sults; and as soon as all of the criteria have been met, it will automatically create and

upload a student’s course certificate. We also want to support our staff better, so, as well as developing a new and easily accessible HR system, we are striving to mod ernise access to materials and to automate the generation and marking of examinations. We have employed a younger generation of experienced lecturers who are more open and familiar with these systems. This will remove some of the more time-consuming and bu reaucratic tasks they previously had to do, so that they can concentrate on supporting the development needs of their students. It is important to note that the SAIW’s core purpose remains rooted in raising quality standards for welding. We want to make it easier for people to access the help they need to achieve the necessary quality standards. This means easier access and lower costs for our courses, and better technical support to help fabricators solve welding problems. We enable South African industry to succeed, to be more globally competitive, and to be ready to deliver to world-class standards. For welder training, we are continuing to expand our use of Virtual and Augmented Re ality (VR and AR) solutions, which we believe can significantly reduce the costs associated with welder training, making it far more ac cessible to young South Africans. We have to uplift our youth, get them enthusiastic about new technologies, and prepare them to build new infrastructure in support of South Africa’s economic growth. VR is an important first step in this regard. It doesn’t involve consumables, plate, weld preparations or PPE. And students who achieve 80% scores for a VR welding process can be far more quickly qualified on a real

process, making the welder training more time-efficient and cheaper. We are in the process of putting together a mobile welder training school built using converted shipping containers. The school will have a small VR-welder training room and a classroom, both powered using solar panels. We will be able to transport the whole facility on a low loader to any school or col lege to expose learners to welding and inspire them to join the profession. We are also considering coupling this initiative with entrepreneur training and marketing support to encourage more young people to set up and succeed in their own businesses. Finally, I would like to point out that South Africa is part of Africa. In recent years, the SAIW and the Nigerian Institute of Welding (NIW) jointly founded the Welding Federa tion Africa. With the IIW’s support, we hope to expand our training initiatives across the continent so that instead of importing scarce skills into our continent, we can be exporting them. Joseph Zinyana

SAIW Board and Management Team Governing Board President: Joseph Zinyana – New Age Engineering Solutions Johan Kruger – Sasol

Nthabiseng Maledi – Wits Morris Maroga – Eskom Dawie Olivier – OSG

General Manager Shelton Zichawo Tel: (011) 298 2102 shelton.zichawo@saiw.co.za Tony Paterson – Retired Johann Pieterse – AFROX John Tarboton – SAIW Carel van Aswegen – Steinmüller Kevin Xaba – ESAB

Executive secretary Dimitra Kreouzi Tel: (011) 298 2102 dimitra.kreouzi@saiw.co.za

Executive Director Vicus Burger Tel: (011) 298 2101 vicus.burger@saiw.co.za

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Cover story: Applications development from Afrox

Navigate application development

African Fusion talks to Johann Pieterse, MI Technical Manager of Afrox, about Afrox’s long history of applications development for assisting its customers in implement ing complex projects efficiently and safely.

“A frox strives to provide solu tions to Industry Partners that greatly improve productivity, reduce production time and cost, while ensuring better safety for artisans,” begins Johann Pieterse. Afrox has a long, rich history of develop ing technologically advanced solutions, supporting industries from petrochemical, mining, power generation, right through to complex construction projects. Afrox’s expertise and application capabilities lay the foundation for a successful project. A notable example is a solution Afrox developed a few years ago, which is cur rently being utilized in the construction of a new steam boiler for a paper producer in Richards Bay. Another example of a technologically advanced solution is the Afrox Gas Reach MUPP service offer. During shutdowns at power-generation sites, welding occurs in boilers at typical heights of 70 m, where the norm has always been to used stick (SMAW) welding electrodes because to get cylinders of shielding gas, people and equipment into these boilers has always been very dif ficult and a potential safety risk, “and lifting cylinders is a real mission” Pieterse adds. “Because of the danger of a cylinder

falling, a designated drop zone has to be established every time a cylinder is lifted or removed from a working platform. Over and above the time it takes to arrange a crane, it takes about 20 minutes to take each full cylinder up and another 20 min utes to get the empty one down again, so easily over an hour of a welder’s time might be wasted while the shielding gas is replaced,” Pieterse tells AF. Furthermore, using multiple gas cyl inders on raised platforms also creates significant other risks, not only because they need to be moved from the crane area to where the gas is required, but there may also be excessive numbers of hose connec tions running along the platforms, creating tripping hazards and increasing the chance of hose leaks, contributing to weld failures. This identified risk can expand the number of safety inspections required on a platform. “A few years ago, we received a request from one of our customers to develop a solution to effectively and safely perform TIG welds at height in the boilers. Shielding gas and welding solutions are at the core of our business, and we strive to do whatever we can to assist customers in using our products effectively, efficiently and safely,” Pieterse says.

Afrox responded to the call, and the Afrox MUPP offer was developed, specifi cally with welding at heights in mind! The MUPP not only improves productivity, but it also makes the site a lot safer. This is because the shielding gas cylinders, which can weigh up to 100 kg when full, remain on the ground in a safe, secure and convenient fenced-off area. Nobody has to ever lift a cylinder onto or handle it on a platform, he explains. The multi-user pressure panel, or MUPP, has proved effective wherever several weld ers working in a confined space or at height need access to shielding gas. Importantly, it enables more efficient gas shielded weld ing processes such as TIG/GTAW, MIG/MAG/ GMAW, MCAW, and FCAW to be used in far more difficult to reach places. The shielding gas feeding each MUPP is supplied from manifolded cylinder pal lets (MCP) of the specified shielding gas required, which are available in convenient bundles of 15 cylinders per pallet that can be managed from the ground. A single high pressure braided-steel hose connects each pallet of gas to a pressure-regulated MUPP in the welding area, which has eight con nection points to independently supply up to eight welders at the same time without cross-interference. On boiler projects such as the one cur rently in progress at Richards Bay, this enables the contractor to locate an MUPP

The Afrox multi-user pressure panel, or MUPP, has proved effective wherever several welders working in a confined space or at height need access to shielding gas.

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and complex projects with Afrox

The shielding gas feeding each MUPP is supplied from manifolded cylinder pallets (MCP) of the specified shielding gas required, which are available in convenient bundles of 15 cylinders per pallet that can be managed from the ground. customer’s needs, be it for boiler construc tion, shutdowns, chemical or petrochemi cal plants, ship repair, fabrication, or any other welding-related project or need. “And we offer the backup needed, in cluding training the welders that will be working on the site. For the Richards Bay project, for example, we took our equip ment to the contractors’ labour broker in Witbank to train the welders on the metal cored arc welding process using Miller’s RMD and ProPulse options,” he relates. In addition, he says that safety, health, the environment, and quality are non negotiable in Afrox. “Any welding appli cation solution we develop incorporates this ethos, particularly where gases are involved,” Pieterse concludes. www.afrox.co.za

Afrox has developed a solution for high-integrity pipe welding based on the use of metal-cored arc welding (MCAW) consumables with modern power sources such as the Miller XMT FieldPro.

and capping runs,” says Pieterse. This welding procedure is currently being used for the construction of the Rich ards Bay boiler, not for large bore pipes, but for all of the long structural welds required. The contractor estimates that the switch to using this procedure, which is coupled with the use of the Afrox MUPP, Argoshield Universal gas, and the Hobart MEGAFIL seamless metal-cored wire, will increase welding productivity on the proj ect by up to 2-3 times, while maintaining weld integrity. “We sell productivity,” says Pieterse. “From carefully selected products from some of the leading brands in the world, we develop solutions that can deliver on all of a

at three different levels where work is being carried out. Each welder simply connects the gas hose to a point on the MUPP for regulated access to the shielding gas they require. “Every welder can pre-set their gas flow, and this will be retained, no matter how many other welders are welding at that time,” Pieterse assures. Further, in support of the boiler industry and introduced several years ago, Afrox developed an application for high-integrity pipe welding based on the use of metal cored arc welding (MCAW) consumables with modern power sources such as the Miller XMT FieldPro. Traditionally, high-integrity pipe weld ing has always been done using gas tung sten arc welding (GTAW/TIG) for the root pass, followed by shielded metal arc weld ing (SMAW/stick) for the fill and capping runs. “This traditional way is still widely accepted and few are willing to consider alternatives,” Pieterse says, adding that this is neither cost-effective nor productive. “When Miller XMT FieldPro machines first became available, we started to develop pipe welding procedures that used metal-cored welding wire and the machine’s RMD function for root welding, followed by the ProPulse mode for the fill Afrox’s metal-cored arc welding solution

The Miller Pipeworx family of products, available exclusively from Afrox in South Africa, is purpose designed for onsite pipe welding.

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SAIW News: Vicus Burger: SAIW Executive Director

The Southern African Institute of Welding (SAIW) has an nounced the appointment of Vicus Burger as its new Execu tive Director, an appointment that marks a significant step in the SAIW’s ongoing strategic renewal plan. SAIW appoints Vicus Burger as Executive Director

V icus Burger joins the SAIW with a wealth of experience, a strong commitment to excellence, and a forward-thinking vision that aligns seam lessly with the Institute’s core values of speed and customer centricity. His ap proachable leadership style and innovative mindset are expected to propel the SAIW into its next chapter of growth and success. SAIW President Joseph Zinyana says, “Vicus’s appointment is proof of our com mitment to operational efficiency and excellence. His leadership will be instru mental in implementing our strategic ini tiatives, such as the integration of Artificial Intelligence into administrative processes and the upgrading of operational systems to meet the latest standards.” A timely revival The appointment takes place against the backdrop of the SAIW’s 78 th anniversary and commitment to expanding its presence in Africa, making courses more affordable, and introducing subject matter experts for specialised subjects. As a result, Burger’s leadership will be crucial in driving these initiatives forward, ensuring that the SAIW continues to evolve into a modern, fit-for purpose service provider for the welding

and inspection industry. “The SAIW has historically stood at the forefront of the welding industry, both locally and globally, representing a bench mark of technical excellence, innovation and professional development. As we step into a new chapter, I am committed to building on this proud legacy and igniting a bold renaissance that will position the Insti tute once again at the apex of global leader ship in welding science, skills development and industrial impact,” says Burger. With a career rooted in transformational leadership, Burger also brings a proven legacy of turning organisations into high performing, future-ready enterprises. “My leadership philosophy is anchored in a passion for empowering people, a relent less focus on exceeding customer expecta tions, and an uncompromising pursuit of operational excellence, innovation, and sustainable growth,” he adds. Digital prowess Burger notes that digital transformation will play a vital role in the Institute’s future: “Central to this revitalisation journey will be the deployment of innovative digital technologies, including artificial intel ligence and automation, to revolutionise

Vicus Burger, SAIW Executive Director.

Photo: Klarene Wattenbach

delivering the best Q4 results and reducing workplace injuries by 80% and consumer complaints by 25%; and as Manufacturing Director for Africa at Reckitt, he imple mented service level improvements and increased performance from 85% to 97% in just four months. In 2015, Burger joined Cell C, where he developed expertise in data science and big data. “I had to lead a massive information based transformation programme for the business. After two years, I was moved to the strategy department to lead the com mercial network strategy. After a few more years working for hos pitality solutions provider Thyme Global, transforming their enterprise reporting to include data-driven decision-making through advanced business intelligence, Vicus Burger decided to focus full-time on his own AI-focused SR71 Consult business, which he founded in 2020. www.linkedin.com/in/vicus-burger-8527ab5 “By developing world-class technical skills and fostering inclusive economic growth, we aim to become a driving force in South Africa’s journey toward industrial excellence and social progress. Together with our stakeholders, partners and the wider welding and manufacturing commu nities, I look forward to shaping a future of strength, innovation, and pride in the South African Institute of Welding,” he concludes. www.saiw.co.za internal operations, member engagement and skills development platforms. This digi tal transformation will not only modernise the Institute but will also unlock new capa bilities, increase productivity, and enhance the value we deliver to our stakeholders, locally and abroad.” Beyond organisational goals, Burger sees a broader national mission. “This re newal represents a much larger ambition: to contribute meaningfully to the broader transformation of our country’s industrial base and the revitalisation of Johannes burg’s Central Business District.

Vicus Burger: from mechanical engineer to AI-leader After graduating from the University of Stellenbosch in the mid-1990s, Vicus Burger began his career as a mechanical engineer, initially with the mines and later with Smiths Manufacturing in Pinetown, KZN, as a test engineer for automotive air-conditioner designs. While at Smiths, Burger developed a world-class air-con ditioner/heat exchanger performance test facility. “That is where I first learned how to program. I coded that whole HVAC facility using Visual Basic,” he tells AF . developed the batch logging systems required by the Medical Control Council. Then in 1999, he became the factory en gineer for Unilever’s largest aerosol filling operation in Africa. “Unilever had an excel lent professional development programme for engineers, and the FMCG industry is continuously changing,” he says.

From 2000 to 2005, he joined South African Breweries. “My most senior posi tion there was as the Group Engineering Manager for Maltings, where I was respon sible for managing multiple sites with large capital and maintenance programmes. The SAB Caledon plant, one of the largest Malt ing plants in the southern hemisphere, was under my care,” he adds. He then entered the world of business development and began to do turnaround projects: transforming customer service and logistics at Mondelēz; resolving capac ity constraints at PepsiCo manufacturing plants without capital investment, while

In 1996, Burger joined the fast-moving consumer goods (FMCG) company, Uni lever. As a project manager in the Soap factory, he was responsible for replacing a 9.0 m shell-and-tube heat exchanger. He also developed a system for managing drawing office resources and job sched uling. On becoming the assistant fac tory maintenance engineer for Unilever’s Personal Products Factory in Durban, he implemented maintenance projects and

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SAIW News: Lemogang Maclean, Senior Welding Technology lecturer

Lemogang Maclean: Shaping the future of welding excellence

With over 15 years of experience spanning power generation, petrochemical and railway industries, Lemogang Maclean is a beacon of inspiration for SAIW students, welding tech nologists, inspectors and professionals across the welding community.

L emogang Maclean’s story resonates deeply with those who aspire to elevate standards, champion inno vation and leave a lasting impact on the welding industry. Her academic foundation is as robust as her professional achievements. Armed with a qualification in Physical Metallurgy, a long list of certifications in welding, including IWT welding qualifications and an MBA, she combines technical precision with strategic insight, enabling her to tackle complex challenges with clarity and confidence. As an IRCA ISO 9001:2015 Lead Audi tor and certified International Welding Technologist (IWT), she mastered the art of bridging the gap between rigorous technical standards and forward-thinking leadership. Her expertise in ASME codes, AWS standards and welding quality man agement has made her a sought-after authority in the field. At the Southern African Institute of Welding (SAIW), Maclean serves as a Senior Welding Technologist Lecturer, where her influence is nothing short of transforma tive. She brings a unique blend of expertise, enthusiasm and empathy to the classroom, inspiring students to push beyond their lim its and embrace the pursuit of excellence. Her ability to break down intricate concepts, whether explaining the nuances of weld imperfections or the intricacies of quality control, has earned her admira tion from students and colleagues alike. Through her specialised courses, she equips the next generation of welding professionals with globally recognised skills, empowering them to compete on an international stage. Before joining SAIW, Lemogang Mclean made significant contributions as a Sup plier Quality Development Engineer at Gibela Rail Transport Consortium. There, she spearheaded initiatives to enhance supplier performance, mitigate risks, and drive quality improvements across the supply chain. Her leadership was in strumental in securing ISO 3834 and EN 15085 certifications for multiple suppliers, unlocking access to international markets and fostering sustainable growth. Her work not only elevated industry standards but

also demonstrated her belief that quality and profitability are not mutually exclusive; they are interdependent pillars of success. What truly sets her apart is her infectious passion and unwavering commitment to fostering a culture of excellence. Her vi brant energy, punctuated by her signature loud laughter, creates an environment where learning is engaging and collabora tion is joyful. She champions continuous improvement, safety and innovation, inspiring those around her to strive for greatness without compromise. Her mantra, ‘enter classrooms, seek knowledge, and doors will open’, is more than a catchphrase; it’s a reflection of her journey from a metallurgical trainee to an industry leader who now shapes the future of welding technology. Maclean’s impact extends beyond tech nical expertise and classroom instruction. She is a mentor, a role model and a catalyst for change, encouraging SAIW students and professionals to embrace challenges, pur sue certifications, and view education as a lifelong journey. Her story is one of breaking barriers, defying expectations, and proving that dedication and knowledge can open doors to limitless opportunities. Whether

guiding a student toward their first weld ing certification or advising a company on achieving international quality standards, her influence is profound and far-reaching. As a trailblazer in welding technology, Lemogang Maclean is not just building careers; she is forging a legacy. Her relent less pursuit of excellence, coupled with her ability to inspire and uplift, makes her a true leader in the SAIW community and beyond. To aspiring welding technologists, in spectors and students, her journey serves as a powerful reminder that, with passion, hard work and a commitment to learning, anyone can shape not only their future but the future of an entire industry. Senior Welding Technology lecturer Lemogang Maclean has an unwavering commitment to fostering a culture of excellence.

In Lemogang Maclean’s words What made you choose welding as a career?

“During my recesses when I was studying Metallurgical Engineering, I would visit industries to explore potential career paths. I explored foundries and material testing laboratories, but nothing clicked. Then one day, I was watching a documentary on TV showcasing the construction of cruise ships and aircraft, which included cutting, shaping and welding pro cesses. That moment sparked a connection, and I knew I wanted to pursue welding after completing my metallurgical studies.” When did you join the SAIW, and what do you like most about your role? “I joined as Senior Welding Technology lecturer on the 1st of April 2025. I thrive on the energy of students eager to learn and grow. It’s fulfilling to see them recognise the power of knowledge in driving innovation and changing lives. “The learning process is mutual – students bring valuable experiences and perspectives, keeping me updated on the latest developments. A day spent sharing my expertise and passion with students is a day well spent!” What are your hopes for your future and the future of the SAIW? “I aspire to continue inspiring students to reach their full potential, break educational bar riers, and prepare them for real-world challenges. “For the SAIW, I envision it becoming a hub for welding and related technologies and research, expanding its global and local partnerships to create better and better opportuni ties for students.”

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SAIW Member profile: AWT

AF talks to Thulani Mngomezulu, General Manager-CEO Designate of 2Roads Group company, Applied Welding Technology (AWT), about the company’s new strategic direction towards becoming a renowned 21 st -century manufacturer of critical engineering components. AWT: Towards exemplary 21 st -century manufacturing

E stablished in 1987, Applied Welding Technology (AWT) operates out of a fully integrated facility in Kempton Park near Johannesburg, offering compre hensive welding, machining, fabrication and testing services. With a primary focus on welding and machining critical parts, AWT has always excelled in working with a wide range of materials, rebuilding critical worn com ponents with base materials and cladding surfaces using Stellite, Inconel, bronze, stainless steel and Monel, among others. Whether rebuilding 10 t vessels or small bore 32 mm nozzles, the company has the welding, machining and heat treatment capabilities to deliver comprehensive remanufacturing solutions for industries using the full spectrum of advanced materi als, such as power generation, petrochemi cal and mining. In addition to its well-equipped factory, AWT has dedicated onsite teams for spe cialised welding tasks. These teams have successfully executed repairs on valves, pumps, fans, valve chests, diffusers, and other equipment. Most notable is the com pany’s expertise in performing seat replace ments on welded valve bodies, including gate and non-return (NRV) valve types. Quality control and assurance are

successfully applied austenitic cladding to cast iron discs ranging from 600 mm to 3 000 mm in diameter and up to 11 tonnes in weight,” Mngomezulu reveals. Re-Stelliting at Kusile: AWT has been providing in-situ machining and re-Stellit ing of valves and other plant components at Kusile Power Station since June 2021. “We are delighted to have completed this con tract in May this year, and to have received a positive end-of-contract review from our client. Throughout this contract, AWT dem onstrated that we can consistently deliver high-quality work, even under extremely demanding conditions, therefore ensuring that our clients receive maximum value from our services,” he adds. Re-imagining the future AWT is expanding its site project foot print beyond its traditional South African market. Examples of this are recent as signments carried out in Mauritius and Ghana, which involved repairs on turbine components for a client operating within the power generation environment. “We are currently working towards developing organisational capabilities that will en able us to achieve our long-term strategic goals. We are strengthening our collabo ration with our 2Roads sister companies to enhance our customer experience while improving synergies between these companies. We also remain committed to quality-enhancing systems such as the ISO 3834 standard certification compliance to international construction codes and local power generation and petrochemical industry requirements,” he tells AF . Appointed in October 2024, Thulani Mngomezulu has been charged with formu lating and executing AWT’s new strategy. His credentials in the South African petro chemical and welding industries make him ideally suited to the task. “For the past few years of my career, I have been largely fo cused on welding technology, but I started my career in mechanical engineering, so I bring manufacturing and machining exper tise into AWT, as well,” he says.

fundamental to the company’s processes. “We continuously improve our processes, diligently monitor every step and conduct industry-standard tests at all the necessary hold points, accompanied by meticulous documentation to ensure the highest standards of excellence,” says Thulani Mn gomezulu, the recently appointed General Manager-CEO Designate of AWT. Notable projects Turbine Valve Components: “Our largest project so far this year has been the refur bishment of turbine valve components for the Majuba and Duvha Power Stations. In general, this work involves machining, weld build-up, cladding – primarily with Stellite – and final machining to tight tolerances in line with OEM’s specifications and instruc tions. “This is highly specialised work that the AWT team has been able to successfully execute based on previous experience and in partnership with the OEM,” he says. Cladding of cast iron butterfly valve disks: Another area of expertise AWT has developed in recent years is the welding of large cast iron components. This is one of the most challenging materials to weld and requires particular welding procedure specifications and tight control of the weld ing operation. “In recent months, we have

AWT has a workshop in Kempton Park and onsite teams for specialised welding tasks. These teams execute specialised weld repairs on valves, pumps, fans, valve chests, diffusers and other equipment.

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SAIW Member profile: AWT

Machining a cast-iron component. AWT excels in repairing critical worn components with complex base materials and cladding surfaces using Stellite, Inconel, bronze, stainless steel and Monel. Having matriculated from Tisand Tech nical High School in Esikhaleni, KwaZulu Natal, Mngomezulu studied mechanical engineering at Durban University of Tech nology, graduating in 2004. “While still at university, I did practical experience train ing at the local Engen refinery. This was my first introduction to South African industry. “My first permanent job was with Sasol Synfuels, where I was a mechanical techni cian doing maintenance and installations on new and replacement plant equipment: pumps, piping, general structures, vessels, tanks, and heat exchangers, for example. After about two and a half years, though, I moved back to Engen as an equipment inspector,” he says. During that time, Mngomezulu studied for his Level 1 and Level 2 Welding Inspec tor and other inspection/testing related qualifications through the SAIW. Then in 2011, he joined the SAIW as a consultant in the Technical Services department, at the time when ISO 3834 Company Certification first began to be rolled out. He was with the SAIW for five years, during which time he also qualified as an IIW International Welding Technologist. In 2016, he was invited to join Lincoln Electric Middle East and Africa as the Tech nical Applications Manager, responsible for supporting and developing applications and demonstrating equipment for the full suite of Lincoln Electric welding and cut ting equipment and consumables, from plasma cutting systems through to all of the manual, semi-automated and automated welding process solutions. During his time at Lincoln Electric, Mngomezulu continued to study, with an increasing focus on developing his busi ness management knowledge and skills. He completed a Post Graduate Diploma in Business Administration (PDBA) from Wits University in 2020; went on to get a Finan cial Modelling & Valuation Analyst (FMVA) qualification from the Corporate Finance Institute® in 2021; and in September 2023, he was awarded a Master’s degree from the

Above: AWT’s Simphiwe Shongwe is setting up a CNC machine for a new job: “Our vision is clear: we are working towards becoming an organisation that exemplifies the 21st-century manufacturing enterprise,” says Thulani Mngomezulu. Right: The company has the welding, machining and heat treatment capabilities to deliver comprehensive remanufacturing solutions. University of the Witwatersrand in Innova tion Studies. A modern manufacturing vision During 2024, with the current CEO, Ross Tudhope, looking to retire, 2Roads and AWT began to search for a suitable candidate to take the reins at AWT. “I was initially ap proached by someone from 2Roads. Then AWT got involved, and after a few months of discussions, we agreed that I would join as General Manager and CEO Designate. Since then, I have been working closely with Ross while also being charged with developing a strategy for sustainable and innovative growth. “I am currently involved with all the dif ferent departments, trying to set up how we want to do things in the future. It’s about managing change, in everything from what we want from our personnel, the training and development that is required to get there, and the technologies we need to adopt, develop and assimilate to ensure that we can compete and succeed. The AWT team has an interesting mix of talent, and everyone is looking forward to building our future together,” Mngomezulu tells AF . “Our vision is clear: we are working towards becoming an organisation that exemplifies the 21 st -century manufacturing enterprise, and this will be largely about our capabilities and how we continuously reorganise ourselves,” he says. “There are two ways to think about our

future, from the perspective of where we are now, and from a vision of where we could be in three, five and ten years. Our history is largely about refurbishments, remanufacturing and lifetime extensions of critical, high-value, precision plant components, and we are very good at this. “Going forward, however, we are gear ing ourselves up to also support the new greener industries, not only the renewable energy sector, but other emerging indus tries as well, in support of global sustain ability,” he explains. “We understand that it’s not going to happen overnight, but together with our new vision, we have been reflecting on what drives us: our mission to help our customers build and maintain reliable systems and our contribution towards a sustainable future – along with our values: Respect, Integrity, Trust, Customer focus, and Quality. “Based on these pillars, we are deter mined to transform Applied Welding Tech nology into a renowned and exemplary manufacturer of the critical components needed for a sustainable 21 st century – and effectively support the needs of our customers in South Africa and beyond,” concludes Mngomezulu. https://appliedwelding.co.za

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White paper: Digitalisation in welding

How meaningful data and digitalisation can improve welding

Matthias Schaffitz, Application Engineer at Wolfram Indust rie, talks about Industry 4.0 and how digitalisation, process automation and programming are increasingly replacing the role of craftsmen in welding applications.

A lthough welding technology already collects data metrics such as cur rent, voltage and welding speed, process control and weld quality monitor ing still rely heavily on the welder’s exper tise. The human ability to flexibly respond to tolerances in the welding joint through a combination of optical pattern recognition and acoustic perception still surpasses the potential of machine systems. The more automated a welding robot is intended to be, the more complex and precise the preparatory work must be. This means that the intuition developed by welders through years of experience must be translated into a logical machine language. Interdisciplinary approaches and close, cross-generational communication are essential for making the digitalisation of welding processes truly effective and fully leveraging the potential for higher process stability, resource efficiency, reproducibil ity and traceability. A 2024 study by BearingPoint, conduct ed in collaboration with Munich University of Applied Sciences, found that 100% of

surveyed companies in Germany were already engaged in implementing Industry 4.0. However, none had fully completed the transformation: On a scale from ‘not started’ (0) to ‘fully implemented’ (10), all responses ranged between 1 and 8. Given this background, it is unsurprising that 81% of companies plan to invest in Industry 4.0 in the coming years. The welding experts at Wolfram Indus trie have already observed how challeng ing this transformation can be in practice. While their customers show great interest in the digitalisation of welding production processes, they also express significant uncertainty about its implementation. How can production lines be digitalised without replacing all existing machinery and personnel? How should the process chain be designed to remain simple and profitable in day-to-day operations, pre venting welders from resorting to manual welding due to system complexity? Most importantly, how can digitalisation be implemented in a way that results in mea surable resource savings and efficiency gains?

Matthias Schaffitz, an application engineer at the Wolfram Industrie GmbH research and production centre in Winterthur, Switzerland: Photos courtesy of Gesellschaft für Wolfram Industrie, mbH. No data hoarding, but meaningful monitoring From a technical perspective, purchasing new Industry 4.0-ready systems is easier than retrofitting existing machinery, but such an investment rarely makes financial sense for most companies. Fortunately, even older generation welding machines offer opportunities for data collection, such as monitoring current, voltage, cool ant levels, or component movement, for example. However, many sensors, accord ing to common industry standards, lack the high resolution required for detailed monitoring of welding processes. To track electrode wear, shielding gas effects or gas turbulence, for example, a resolution of more than 1 000 data points per second is necessary. Additionally, stan dard values such as current and voltage can be difficult to measure in tungsten inert gas (TIG) welding, as the high-voltage ignition used requires specially designed arc volt age measurement systems. Yet, even with the availability of high resolution measuring devices, the key to Industry 4.0 implementation lies in balanc ing what is measured against how the data can be meaningfully analysed. So, how can this balance be achieved? Resource efficiency and process reliability Digital monitoring competes with a highly skilled counterpart: experienced welders and their intuition.

In order to digitise the welding industry, the welders’ intuition, forged through years of experience, must be translated into logical language.

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A resolution of more than 1 000 data points per second is required for recording electrode wear, shielding gas influences or shielding gas turbulence during welding. Due to their three-dimensional spatial awareness, humans can quickly recognise optical patterns and acoustic anomalies. This enables experienced welders to react flexibly, compensating for tolerances in the weld seam and making them less depen dent on precise pre-processing. The more automated a welding process becomes, however, the more meticulous and precise the preparation must be. The increased setup time has led to the per ception that digitalised welding processes are only worthwhile for high production volumes. However, time is not the only resource significantly impacted by welding digi talisation. Automated processes can also reduce material waste, as fewer rework operations are needed, and a consistently high quality is easier to replicate. Given that metals are resource-intensive and costly materials, efficiency and process stability gains can become evident even in small scale production. The prerequisite for this is correct machine settings and minimal production tolerances. In other words, the expertise and professional intuition of welders must be translated into a logical, programmable language. Linking human expertise with digital information flow At this point, two different information flows collide: that of craftsmen and that of programmers. This also raises a generation al question, as traditional manual welders tend to belong to an older demographic, while operators are generally younger. To effectively merge the deep knowl edge of traditional craftsmanship with the rapid data flow from real-time monitor ing, the prevailing distrust between both groups must be overcome. Traditional welders would benefit from gaining an understanding of digital data processing and process control, while operators and programmers should strive to grasp the

Automated processes can reduce material waste as less reworking is required, and high-quality results are easier to reproduce.

The key to a successful digital transformation of welding technology lies in the communication and methodological expertise of traditional manual welders and modern operators.

establish realistic monitoring capabili ties. Based on this, the effort required for pre- and post-processing of workpieces in automated welding processes can be optimised, setup times minimised, and resource consumption in daily operations reduced – ensuring that the vision of higher process stability, resource efficiency and traceability promised by Industry 4.0 does not remain an empty promise. https://wolfram-industrie.de

principles of the welding trade. The key to a successful digital trans formation in welding technology lies in communication and the methodological competence of both sides. To support its customers in this transition, Wolfram In dustrie collaborates closely with research institutes, system manufacturers and end users. The initial goal is to establish the necessary foundations for each production environment to assess relevant data and

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voestalpine Böhler Welding: arcing in sugar mills

Franz Rosenblattl, Business Development Manager for voestalpine Böhler Welding Wear Protection and Special Applications, outlines the successful development in Brazil of a new consumable metallurgy for enhanced performance and weldability during roller arcing in sugar mills. State-of-the-art consumables for the sugar industry

T he sugar industry is one of the oldest and most influential sectors in the global agricultural economy. From colonial roots to modern-day industrial production, sugar has shaped economies, diets and trade policies across the globe. Today, the sugar industry faces a com plex mix of opportunities and challenges, ranging from changing consumer prefer ences to the need for continually increasing production volumes to remain competitive in the global market. Many of these prob lems can be mitigated by optimising mill performance using better welding tech nologies. Welding is a critical factor in several stages of the sugar milling, including: • The efficiency of the sugarcane prepara tion system. • Maintaining hydraulic load, oscillation and rotation. • The surface conditions of the mill rollers. • The opening setting of rollers during milling. • The adjustment of trash plates. • The feed of cane/bagasse into interme diate mills. Enhancing the extraction index In a sugar mill, the most important param eter for its efficiency is the extraction index.

A comparison of the hardness profiles of various hard materials with the new UTP Vanadium consumable.

out via a manual welding process using coated electrodes. The hardfacing material deposited during roller arcing protects the inside of the mill from wear and tear caused by sugar cane impurities such as grit and soil, improves sugar cane input levels, and aids juice extraction. The sugar milling unit Classically, a milling unit is composed of cylinders or rollers arranged so that the intersections of their centres form isosceles triangles. Cylinder spacings are set depend ing on their positions to optimise the ex traction of juice, which is used downstream to produce sugar or ethanol. A tandem mill in sugar cane processing consists of a series of roller mills. Each mill typically includes three rollers, two at the bottom and one at the top, through which the cane passes. The crushed cane (bagasse) moves from one mill to the next, with each stage extracting more juice. A tandem roller mill configuration increases extraction efficiency and throughput. Sugar roller arcing using hardfacing welding consumables is used to improve mill efficiency for several reasons. First, it assists in feeding the cane by increas ing the compaction load applied to the bagasse layer. This also helps to minimise reabsorption. In addition, roller arcing helps protect the sides of the grooves against wear, it increases the tonnage of cane that can be processed per season and raises the milling speed (t/hour).

UTP, part of the voestalpine Böhler Group, has partnered with a leading sugar mill in Brazil to enhance this key production index. Their joint initiative focuses on opti mising the extraction process through the application of hardfacing technol ogy – a wear-resistant coating technique that significantly extends the lifespan and performance of processing equipment. By reducing mechanical wear and improving operational efficiency, this innovation aims to boost overall sugar yield and reduce downtime, offering a strategic advantage in this highly competitive industry. Applying roller arcing in mills is a basic operation at production plants during the on-season. The arcing application is carried

The cylinders or rollers of a sugar mill are arranged so that the intersections of their centres form isosceles triangles.

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