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June 2016
AFRICAN FUSION
1
Published four times a year and
mailed out together with
Mechanical Technology by:
Crown Publications cc
Crown House
Cnr Theunis and Sovereign Streets
Bedford Gardens 2007
PO Box 140
Bedfordview 2008
Tel:
(011) 622 4770
Fax:
(011) 615 6108
Editor:
Peter Middleton
E-mail:
mechanical@crown.co.zaAdvertising:
Norman Welthagen
E-mail:
normanw@crown.co.zaPublisher:
Karen Grant
Deputy publisher:
Wilhelm du Plessis
Cover design:
Afrox
Production & layout:
Darryl James
Circulation:
Karen Pearson
Subscriptions:
Wendy Charles
Printed by:
Tandym Print
June 2016
Contents
www.africanfusionmagazine.co.zaOn May 4, 2016, The Linde
Group; its African subsidiary,
Afrox; and alternative energy
company Renergen Limited –
through its subsidiary TETRA 4
– signed an historic agreement
for the commercialisation of
the Free State Helium and
Natural Gas field.
African Fu-
sion
attends and talks toNazmi
Adams Afrox general manager
of sales and marketing.
28
6
24
26
FEATURES
4 SAIW emerges as a self-sustaining organisation African Fusion summarises the 2015/2016 AGM reports for SAIW and SAIW Certification, which were both presented by current SAIW president, Morris Maroga. 6 Transnet Engineering: the first CL 1-certified rail fabricator in Africa African Fusion visits Transnet Engineering’s EN 15085-certified Durban facility and talks to welding engineers, Rodwell Baloyi (IWE) and Dhurusha Govender, along with Collin Moopanar, the executive manager of R&D mechanical. 14 The alform welding system, a world first This paper, delivered at the 2015 IIW International Conference in Helsinki, Finland last year by specialists fromboth voestalpineBöhlerWelding and voestalpine Stahl, describes a newapproach to base material andwelding consumable development that aims to optimise their combinations for fabrication. 20 High-strength materials – challenges and applications Our second IIW paper for this issue, also delivered in Helsinki, studies the narrow gap gas metal arc welding (GMAW) of S890QL steel. 24 Self-shielded flux-cored wires: the on-site alternative to stick-electrodes African Fusion talks to Renttech’s Johan Bester about self-shielded flux-cored wires, which can be an ideal substitute for shielded metal arc/stick electrode welding for on-site construction projects. 26 Cobalt-based cladding: a local success story Wiehan Zylstra, technical manager with the Welding Alloys South Africa, (WASA) presents a case study on the use of Welding Alloys’ cobalt-based cladding material, STELLOY 6-G, which was welded out of position using Fronius’ TPS synergic pulsed-GMAW equipment. 28 Welding fume extraction and filtration At an SAIWeveningmeeting earlier this year, Jacques Cato talkedaboutwelding fume, filtration technology and the solutions available fromDonaldsonFiltration Solutions in South Africa.REGULARS
3 Sean’s comment 8 SAIW bulletin board 12 Front cover story: SA’s first onshore helium and natural gas field 31 Welding and cutting forum 36 Today’s technology: Polysoude TIG er technology