摘要
本文根据螺钉冷镦模的工作条件和生产特点,提出了 GCr15钢双细化处理工艺;研究了预处理及最终热处理工艺参数对组织和性能的影响。未溶碳化物可细化到0.5μm 左右,晶粒细化为10～11级。经双细化处理的 GCr15钢制M3螺钉冷镦模较原 T10A 钢制常规处理者其使用寿命提高2倍。
According to the working condition and the producing characteristics,the double fining treatment process of GCr15 steel is presented in this paper.The influence of the pretreat- ment and the final heating treatment parameters on the structures and the mechanical prop- erties is studied in this paper,too.The double treatment can make the earbids which haven′t insoluted fine to 0.5μm and the grains fine to No.10—11.Compared the M3 cold bolt dies made of GCr15 and treated by double fining with that made of T10A and treated by treatment conventional treatment,the average life of the die is Prolonged by two times.
