STEEL WIRE FOR ULTRA-HIGH STRENGTH TIRECORD AND METHOD FOR MANUFACTURING THEREOF

摘要

The present invention relates to a method for manufacturing a steel wire for an ultrahigh strength tirecord which includes: a first wire drawing step; a first patenting heat treatment step; a second wire drawing step; and a second patenting heat treatment step and more specifically, in which a magnetic field stronger than 100 kilo-oersteds is applied during the second patenting heat treatment step.