Manufacturing method of ultrahigh strength ultra-fine carbon steel wire

摘要

The improved method has been proposed for the production of ultra-fine carbon steel wire with a diameter of 50 m or less. In a steel wire drawing process by repeating a plurality of cycles each consisting of a patenting process starting from a base steel wire and a cold drawing process, a steel wire drawing process is carried out at 750-900C for 1-30 seconds, The heat treatment of the intermediate steel wire having a diameter of about 100-500 in an atmosphere of a gas mixture of-10% by volume is performed prior to the final heat treatment, so that the final drawing can be safely performed without cracking of the fine steel wire.