African Fusion November 2017

Contents

November 2017 FEATURES 4 Record numbers celebrate welding success SAIW held is 69 th Annual dinner and Awards on Friday October 20, 2017 at Emperors Palace inGauteng. With actor and presenter Jason Greer as Master of Ceremonies and the Supreme 3 – Tebogo Louw, Danny K and Loyiso Bala – singing Mowtown era classics, record numbers of welding industry stakeholders turned up to celebrate the industry’s success. 7 Afrox presents Harvey Shacklock Gold Medal On 20 October at Emperor’s Palace in Johannesburg, in celebration of 90 years in the gases and welding industry and in honour of its founding CEO, Afrox presented the prestigious Harvey Shacklock GoldMedal Award at the 69 th SAIW Annual dinner. 8 Visual Testing: the first line of defence SAIW’s NDT Training Manager Mark Digby talks to African Fusion about the increasingly important role of Visual Testing (VT) and its place as an NDT method in own right. 10 The MegChem way: long-term support: well beyond project scope African Fusion visits MegChem/SecMet in Centurion, Pretoria and talks to Andrew Seebregts, the company’s principal welding engineer, and Ronald Koenis, business unit manager for metallurgical engineering. 14 Modified GTAW orbital tube-to-tubesheet welding technique and the effect of a copper weld retainer during welding of alloy 825 This paper won the SAIW Harvey Shacklock Award in 2017 for its principal author Angel Krustef. 18 The influence of helium content in shielding gas on metal melting characteristics for narrow gap GMA welding Presented in Shanghai at the IIW 2017 International Conference in June this year, this work details research done at the Harbin Institute of Technology in China. 23 Afrox unveils welding school at LIV Village The LIV Welding Academy is a custom container welding school that was developed by Afrox in partnership with LIV and the Southern African Institute of Welding (SAIW). 24 Stainless welding consumables with low Cr VI emissions Oerlikon has developed a new range of stick electrodes and flux-cored wires for Grades 308L, 309L and 316L stainless steel that significantly reduce fume and Cr VI emissions. 28 Renttech outlines renewed focus under Bidvest Renttech SA’s DuncanWhitehead is striving for ‘business as usual’, but at higher than ever levels of service, product and technical excellence. 30 Seamless SAW basic-cored wire improves productivity In a step to further improve submerged arc welding productivity, voestalpine Böhler Welding has introduced SUBARC T55 HP, a seamless cored wire for submerged arc welding applications. REGULARS 3 Sean’s comment 12 Front cover story: ESAB South Africa refocuses for growth 28 Welding and cutting 32 Today’s technology: Thermal spray coatings and solid particle erosion

Published four times a year and mailed out together with MechChem Africa by: Crown Publications cc Crown House Cnr Theunis and Sovereign Streets Bedford Gardens 2007 PO Box 140

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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 Deputy publisher: Wilhelm du Plessis Cover design: Afrox Production & layout: Darryl James Circulation: Karen Smith Printed by: Tandym Print, Cape

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African Fusion talks to Chris Eibl, who has returned to formally re-establish ESAB South Africa as the premier supplier of the world leading ESAB brand in Southern Africa, about the entity’s expanding facilities at How- den Africa and his vision for better servicing the welding industry.

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November 2017

AFRICAN FUSION