Fine Stainless Steel Wire Can Now Be Annealed In-line with Drawing

It has been widely accepted that stainless steel and nickel alloy wire cannot be annealed quickly enough to go in-line with a drawing or rolling machine. This is now a thing of the past. Plasmait has introduced a new PlasmaANNEALER that is first in the world to anneal fine austenitic stainless steel and nickel alloys wire at the speed of drawing. This new concept allows for a radical increase of continuous annealing speeds that can surpass 20m/s in the case of fine wire sizes of austenitic stainless steels. The wires with diameters 0.5-0.1mm (0.02’’-0.004’’) can be recrystallization annealed with plasma at the speeds of 360-1200m/min (1200-4000ft/min). With such speeds annealing can be performed in-line with drawing or rolling, substituting multiple lines of a traditional tube furnace. The annealer can be used for small cross-section round, flat and shaped wires as well as tubes made of stainless steel and nickel alloys.The annealer features compact design, high energy conversion efficiency, very low gas consumption and gives the operator the ability to target mechanical properties with a great degree of accuracy. Rapid heating and reduced time of recrystallization results in fine grain size with uniform crystal structure. The PlasmaANNEALER can cold start production in few minutes and can be stopped imminently. This avoids the lengthy heating-up and cooling-down times and associated energy costs that are symptomatic for a conventional tube furnace. High-speed trials on the new line can be performed at Plasmait’s facility in Austria. The annealer can process different type of materials used in applications such as: fine wire for mesh and textile, filter wire, EMS mesh wire, electronics resistance wires, heating element wires, copper clad steel and copper clad aluminium wires, as well as wires, ropes and tubes for medical, jewelry, aerospace, automotive and similar applications.

About Plasmait GmbH: Plasmait is a supplier of heat and surface treatment solutions for wire, cable, tube, strip and ribbon industry. Plasmait’s solutions are based on a patented plasma treatment process that offers advances in production efficiency, surface quality, process control and ecology. Plasmait provides heat and surface treatment solutions as individual machines or as turn-key production line deployments.

Igor Rogelj, Plasmait GmbH, UK/International: +44 7810 810 656, Austria: +43 318 252 7450,



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