METHOD AND DEVICE FOR FORMING AND/OR COATING WIRE-SHAPED METAL MATERIAL

摘要

Method for drawing and/or coating wire products consists of passing the wire through an inlet (20) and outlet (21) nozzle of a pressure chamber (14) into which solid to paste-like lubricant (18,28) is fed. Pressure is applied to the lubricant by an external pressure unit (1) and the pressure/temp. of the lubricant is regulated so that it never becomes a liquid. The drawing process can be stopped and the direction of movement of the wire reversed at which time the pressure on the lubricant is reduced. Reaction product on the wire becomes embedded in the lubricant during drawing and can be removed with the lubricant after the drawing process. The lubricant can be fed into the chamber via one of the feeder channels while the other channel is being located with lubricant. The exit nozzle which is the drawing die can be the entrance nozzle to another chamber for further drawing or coating. The lubricant is in the form of a powder, pressed body, pellets or granules. The wire passes centrally through the chamber by the lubricant which is evenly distributed around the wire by a separator device (22).