真空氮化在摇架手柄模上的应用  

Vacuum Nitriding Of Forming Dies for Cradle Handle

作　　者：朱琴心 孙文全[2] 孙雅雯[2] 

机构地区：[1]上海纺织工业专科学校,200051 [2]上海华通开关厂

出　　处：《热加工工艺》1992年第2期31-33,共3页Hot Working Technology

摘　　要：用Cr12MoV钢制造的摇架手柄成型模具,在970±10℃淬火、160～180℃回火二次的基础上,再进行真空脉冲氮化,由正交试验确定出最佳的直空氮化工艺参数;当氮化温度为510℃、氮化时间为5h、炉压7～53kPa、通氨量为70L/h时,渗层表面硬度、深度、耐磨性、抗咬合性等均获得满意的结果,使摇架手柄模寿命提高25倍左右。The Optimum Vacuum nitriding parameters are determined by orthogonal tests with the forming die for cradle handle made of Cr12MoV which is vacuum-nitrided on the basis of quenching at 970±10℃ and tempering twice at 160～180℃, When the nitriding temperature is 510℃, the nitriding duration is 5h, With the oven pressure being 7～53kea and ammonia flow being 70L/h, the Surface hardness, deepness, wear resistance, anti-cohesiveness of the nitrided layer can reach satisfying levels, thus raising the life time of cradle handle by 25 times.

关 键 词：冷成型模 真空氮化 耐磨性 抗咬合性 

分 类 号：TG162.4[金属学及工艺—热处理]