Patent ID: 6291079
Filing Date: 2001-09-18
Classification: B21C,C21D,C22C,Y10T

Abstract:
A method for manufacturing a steel wire intended for use as a reinforcing wire for a flexible tube, characterized in that it comprises the following stages:manufacturing a reinforcing wire of sizeable length by rolling or hot drawing from steel containing the following elements:0.18% to 0.45% C,0.4% to 1.8% M,1 to 4% Cr,0.1% to 0.6% Si,0 to 1.5% Mo,0 to 1.5% Ni,at most 0.01% S and at most 0.02% P,the reinforcing wire having, after being rolled or hot drawn, a temperature higher than the AC3 temperature of the steel,winding the wire in reels, andair cooling said wire reel so as to obtain a HRC hardness greater than or equal to 40.