Granodraw

A process used to deposit a coating of zinc phosphate onto steel wire or rod prior to dry drawing. Such coatings are extremely retentive of the soap lubricants used in wiredrawing and react with them under the pressure encountered at the die faces to form a smooth film of zinc soaps, which effectively prevents metal to metal contact, thus increasing tool life by minimizing metal pick-up, scratching and breakages. Mainly used for the drawing of high carbon steel. A trademark of Henkel Surface Technologies.