Production method of 20Cr13 stainless steel wire rod for cold heading shaft sleeve

The invention belongs to the technical field of stainless steel production, and relates to a production method of a 20Cr13 stainless steel wire rod for a cold heading shaft sleeve. According to the method, on the basis of a conventional method, the steps of smelting, rolling and annealing are further improved, and during smelting, molten steel elements are adjusted as follows: 0.16-0.20% of C; si < = 0.40; less than or equal to 0.40% of Mn; 12.0-14.0% of Cr; 0.30% or less of Ni; 0.10% to 0.30% of Cu; the stainless steel wire rod with better surface quality and high dimensional precision is manufactured by adopting a high-speed rolling machine; and then annealing treatment is conducted in a cover type annealing furnace, and the 20Cr13 stainless steel wire rod for the cold heading shaft sleeve is obtained. Through the comprehensive action of element control, rolling speed and temperature control and the annealing process, the annealing hardness of the finished wire rod is smaller than or equal to 145 HBW, the s