摘要
对电珩磨-高速镀硬铬工艺的临界电流密度进行了试验研究。得出的结论是:欲满足镀层表面硬度HV900以上、镀层表粗糙度?以下的要求,电流密度i下限取50A/dm^2,上限取120A/dm^2。当取i为50A/dm^2时,沉积速度为0.057mm/h,表面硬度为HV900,表面粗糙度为?;当取i为120A/dm^2时,沉积速度为0.18mm/h,表面硬度为HV1100,表面粗糙度为?。采用这项新工艺,可提高生产效率,降低低能量消耗,并使工件获良好的机械性能。
An experimental investigation in the critical current den-sity in the process of electrohoning--quick hard chromiumplating demonstrates the following conclusions: For obta?-ning the required surface hardness (higher than HV900) andsurface rating (below 0.63/?), the current density i should becontrolled in the range of 50--120A/dm^2. The deposit speed,surface hardness and surface rating art 0.057mm/h, HV900and 0.16/? respectively by i=50A/dm^2, and those by i=120A/dm^2are 0. 18mm/h, HV1100 and 1.12/? This new process leads tohigher productivity and lower energy consumption and provi-des good mechanical properties for the workpieces.
出处
《石油机械》
北大核心
1989年第10期17-21,5-6,共5页
China Petroleum Machinery
