CONTINUOUS DRAWING METHOD FOR WIRE

摘要

PURPOSE:To perform a continuous drawing of a wire at a high passing speed by applying a zinc-calium phosphate lubricating substrate to an iron-zinc alloy layer on the descaled surface of the wire and performing lubricating treatment with a stearate. CONSTITUTION:After a wire is descaled by a mechanical descaler with the wire straight and continuously carried in the longitudinal direction, the wire is blasted with iron-zinc particles to form an iron-zinc alloy layer on the wire surface. The wire is preheated at a preferable temp. in 80-90 deg.C and is passed through a zinc-calcium phosphate solution to perform a lubricating substrate treatment to deposit said phosphate on the surface of the iron-zinc alloy. Then, the wire is washed with water to remove an excess deposit and is passed through a calcium stearate or a sodium stearate solution to perform the lubrication treatment. The lubrication treated wire is rapidly dried with infrared rays and is drawn with a die.