African Fusion November 2017

Welding and cutting

Seamless SAW basic-cored wire improves productivity In a step to further improve submerged arcwelding productiv- ity, voestalpineBöhlerWelding has introducedSUBARCT55HP, a seamless coredwire for submerged arcwelding applications. in situations where higher heat input is acceptable. Alternatively, users can opt for a

B ÖHLERSUBARCT55HP isaseam- less, copper-coated cored wire developed for submerged arc welding of unalloyed and fine-grained structural steels with yield strengths of up to460MPa. Incombinationwith three different fluxes – UV 421 TT, UV 400 and UV 306 – voestalpine BöhlerWelding can nowoffer seamless coredwire/flux com- binations for a variety of applications. BÖHLER SUBARC T55 HP is a basic cored wire that is specially formulated to fully benefit from the increased de- position rates associated with cored wire technology. It allows substantially higher welding currents in butt welding and higher travel speeds in fillet welding

Bohler SUBARC T55 HP is a basic cored wire formulated to fully benefit from increased deposition rates. welds, which reduce the number of beads for butt welds and the weld- ing time for fillet welds. Up to 30 % lower flux consumption can also be achieved on butt weld joints. • From a weld quality perspective, SUBARC T 55 gives better sidewall fusion, bead appearance and slag detachability, along with a lower defect rate and associated down- time for repair. In addition to offering more productive welding procedures, higher deposition rates, heat inputs and interpass tem- peratures, the softer seamless copper- coated wire is easier to feed through curved liners, which reduces contact tip wear. The seamless wire design also reduces moisture absorption, further reducing weld metal hydrogen content. These advantages of Böhler SUBARC T55 HP over solid wires can result in significant reductions in the total SAW welding costs and projected lead times. Applicability and the savings that canbe obtained, however, strongly depend on the welding application and a thorough analysis is needed to assess feasibility – for which Bohler Welding specialists are on hand to support interested fabricators. www.bohler-uddeholm.co.za addition, softer skills suchas end-user com- puting, wholesale and retail operations, business administration, generic manage- ment and project management will be offered. “In addition, we have committed our- selves to industry through a value-added service: staff evaluation in the workplace to assess training needs,” says Louw. “South Africa has a vast under-educat- ed and untapped workforce. Our vision is to provide learners with internationally recognised training and qualifications and for them to develop subsequent pride in their futures,” she concludes. www.cosmotraining.co.za

lower heat input at the same deposition rate/travel speed or any other beneficial compromise. The basic flux formulation offers increased margins with respect to strength and CVN impact toughness, which compensate for the larger weld beads and fewer layers associated with increased deposition rates. Increased welding productivity and lower total welding costs are further promoted by important related quali- ties; suchas consistentweldpenetration and tie-in; easier slag release and lower flux consumption; lower defect rates; and lower contact tip wear. The SUBARC T 55 wire/flux com- binations are suitable for single-wire, tandem-wire and twin-wire SAW sys- tems. A summary of the advantages and user benefits include: • Higher wire melting rates and up to 35 % higher weld metal deposition rate due to the use of flux-coredwire technology. • Better welding characteristics – arc stability, weld width and arc smootheness – than solid wire alternatives. • Allows substantially higher welding currents on butt welds and substan- tially higher travel speeds with fillet

A SAW comparison of the deposition rates of the Böhler SUBARC T55 HP seamless cored wire with a solid wire of the same diameter.

Cosmo Industrial opens training academy Cosmo Industrial has nowopened its Train- ing Academy at its Silverton Superstore in PretoriaWest. “We are committed to raising the standards of welders in South Africa by offering qualifications to artisans, who, we believe, are a vital asset to the welding industry and to South Africa,” says Lezann Louw, head of training for the Cosmo Train- ing Academy. our directors, Pierre van Nieuwenhuizen andRossouwvander Merwewere complet- ing their artisan qualifications, they were inspired with a passion for welding and a vision for quality by the training received from their facilitator. That was the start of their journey to master the skill of welding and they now wish to share this skill with the younger generation,” Louw explains. The Cosmo Training Academy in Silver- ton will offer an array of courses ranging from welder qualifications in the different processes, along with artisan training in trades from welding to spray painting. In “Our long-term vision of is to offer industry-leading artisan training and qualifications. Over the years, the status of artisan welder qualifications has been diminished. Twenty-four years ago, while

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November 2017

AFRICAN FUSION