African Fusion March 2019

Contents

March 2019

FEATURES 4 SAIW hosts fracture and fatigue seminar AfricanFusion presents someof Professor Adolf Hobbacher’s comments from the opening session of an SAIW-hosted fracture and fatigue seminar. 6 Phased array NDT for rapid detection and repair Following a visit from The German Society for Non- Destructive Testing (DGZfP), SAIW is nowgearing up to offer training in phased array and other advanced NDTmethods to South African plant and fabrication inspectors. African Fusion talks to SAIW’s Mark Digby about the technology. 8 Hlakani: Differentiated by weld-quality management AfricanFusion profilesISO3834-certifiedHlakaniEngineering and talks to sales director Gerhard Holtshauzen about the company’s successes and future outlook. 14 A feasibility study comparing two commercial TIG welding machines for deep penetration Presented by R French, WYeadon, G Kapellmann-Zafra and H Marin-Reyes at the IIW 2018 International Conference in Bali, this paper follows observations of novel weld-pool activity during TIG welding in the 300 to 1 000 A range at the University of Sheffield. 20 Low cost air plasma system transforms steel fabricator African Fusion visits the fabrication facilities of Tsipe Engineering near Rosslyn in Pretoria North and talks to the company’s MD, Martin Krebs, about his investment in a Torchmate 4800 air plasma cutting system from Lincoln Electric distributor Cosmo Automation. 22 Shielding gas: the GMAW solution optimiser African Fusion talks to Afrox’s Johann Pieterse and Arnold Meyer about shielding gas choices: the ultimate differentiator when optimising gas metal arc (GMAW) and flux-cored arc welding (FCAW) processes using Afrox’s 360° welding solutions service. 24 Babcock: fabricating in SA for 25 years November 2018 marked 25 years for Babcock’s fabricating facility as it celebratedproviding fabrication and a full range of specialised support services to Africa’s power generation and metallurgical industries. David Brook, technical director, explains. 26 African Castolin Eutectic licence agreement secured Following the signing of a technology transfer and licence agreement withwear coatings solutions specialist, Castolin Eutectic, Hlakani Engineering is bringing wear plate manufacturing and vertical rolling mill refurbishment capabilities to South Africa. Johan van Niekerk outlines the company’s new offering. REGULARS

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Editor: Peter Middleton E-mail: peterm@crown.co.za Advertising: Helen Couvaras E-mail: helencou@crown.co.za Publisher: Karen Grant

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Deputy publisher: Wilhelm du Plessis Production & layout: Darryl James Circulation: Brenda Grossmann Printed by: Tandym Print, Cape

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In light of the global acquisition by ESAB of India-based EWAC Alloys, Chris Eibl talks about the expanded range of preventivemaintenance, re- pair and wear-related solutions now available from ESAB South Africa.

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3 Sean’s comment

12 Front cover story: Hardfacing solutions for maximum uptime and longer equipment life

28 Welding and cutting forum

Publisher of the Year 2018 (Trade Publications)

32 Today’s technology: EXELTOP adds value to Tru-Trac’s welding processes

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March 2019

AFRICAN FUSION