African Fusion June 2015

Contents

June 2015

FEATURES 4 Towards good quality NDT technicians SAIW NDT manager Harold Jansen ‘pulls up a chair’ to help outline his vision for a holistic NDT technician development programme that incorporates the best of ISO 9712 and the employer-based SNT-TC-1A NDT personnel certification schemes. 8 SAIWmember profile: Hi-Tech Pressure Engineering African Fusion speaks to Warren Hollingsworth of Hi-Tech Pressure Engineering. 16 Deposition of crack-sensitive nickel-based alloy using LAAM In this paper layer by layer fabrication using laser aided additive manufacturing (LAAM), was successfully implemented on the nickel-based superalloy, IN100. 22 Current progress in the science and technology of GMAW processes Yoshinori Hirata highlights key current developments in quality and productivity for the gas metal arc welding (GMAW) processes. 26 DICONDE: Bridging NDT’s digital divide At an evening meeting at the SAIW earlier this year, Michael Beaugrand from Larivière of the US presented on the latest technology for transitioning from film-based to digital radiography. 29 Spray coatings: quality matters Thermal spray coatings need to adhere to strict quality standards due to the criticality of industrial components, argues Jan Lourens of Thermaspray. 30 WASA’s new tubular hardfacing electrodes Wiehan Zylstra technical manager of Welding Alloys South Africa (WASA) introduces the company’s new tubular welding electrodes. 32 Fume extraction: at source solutions African Fusion talks to Envirox’s Schalk Hoon and Anton Herteberger about the company’s fume extraction solutions. 34 Trends, processes and consumables for pipeline construction During May, Böhler Uddeholm Africa, in partnership with Fronius and Gridweld, hosted a seminar and practicalworkshoponpipelinewelding. AfricanFusion attends and summarises the keynote presentation.

Published four times a year and mailed out together with Mechanical Technology by:

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Editor: Peter Middleton E-mail: mechanical@crown.co.za Advertising: Norman Welthagen E-mail: normanw@crown.co.za Publisher: Karen Grant Director: Jenny Warwick Cover design: Afrox Production & layout: Darryl James Circulation: Karen Pearson Subscriptions: Wendy Charles Printed by: Tandym Print

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In response to the specific requirements and needs of establishing and operating concentratedsolar power (CSP) plants, Afrox, the country’s largest industrial gases and welding products supplier, has developed a comprehensive product and energy solutions offering to specifically suit the industry. African Fusion talks to Johan Pieterse, Afrox’s busi- nessmanager for themanufac- turing industries.

REGULARS 3 Sean’s comment 10 SAIW Bulletin board 14 Front cover story: Gas and welding solutions for the CSP industry 39 Welding and cutting forum 44 Today’s technology: ABB’s large industrial robot line

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June 2015

AFRICAN FUSION