CLADDING METHOD OF ALUMINUM COATING TO WIRE-SHAPED STEEL ELEMENT, WIRE-SHAPED STEEL ELEMENT WITH ALUMINUM COATED LAYER AND HIGH MOLECULAR COMPOUND ARTICLE TO WHICH WIRE-SHAPED STEEL ELEMENT WITH ALUMINUM COATED LAYER IS MOUNTED

摘要

This invention relates to a method for cladding a wire-shaped steel element (1) with an aluminium coating layer (3) by passing the steel wire (1) through an extrusion orifice (8), whereby plastified aluminium is fed through a closed feed channel (7) preceding the orifice (8) and is applied under pressure on the wire-shaped steel element (1) in the orifice (8) for forming the coating (3). According to the invention, the steel wire (1) is provided with a corrosion-resistant layer (2) with a thickness of 1 to 25 micron, which layer (2) has a lower melting temperature than the melting temperature of the aluminium to be applied and whereby during the coating process the temperature of the protective layer (2) which comes in contact with the aluminium remains lower than the melting temperature of the layer (2). This invention also relates to coated steel wires according to the invention.