EoW March 2010

technology news

Descaling of steel wire Ecoform Umformtechnik has developed a new procedure for the mechanical descaling of steel wire. Its basis is a pressure lubricating system previously developed by Ecoform.

Steel wire, affected by mill scale, enters into a pressure chamber filled with lubricant. The steel wire, enclosed with lubricant, can be pulled with the drawing tool located at the end of the pressure chamber. This drawing simultaneously reduces the cross section and increases the surface. As the wire leaves the drawing tool the scale layer and the lubricant layer above it flake away from the wire surface. Surface and material are descaled without either deformations, local solidifications and microstructural transformations on the wire surface Faults arising during the drawing process are eliminated Blotchiness and bubbling of further surface finishing, for example electrolytic nickel or chromium coating, are prevented • • • The advantages of the system include:

Diagram of the new descaling system from Ecoform ▲ ▲

Ecoform Umformtechnik GmbH – Germany Fax : +49 351 4657 300 Email : ecoform@ecoform.de Website : www.ecoform.de

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Product quality is improved, in alternative descaling procedures, due to the prevention of micro cracks in the wire surface Operation speeds are increased during the mechanical descaling comparison with

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EuroWire – March 2010