铸铁涨圈松孔镀铬工艺研究

Spongy Chromium Plating Technical Study on Casting Piston Ring

依据航标及零件的工况,采用镀铬方法,通过对试片及试验件的施镀,成功地对封严涨圈端面进行了松孔镀铬,满足了设计要求。并且针对该材料镀层的硬度、结合力,以及通过两厂生产的试件进行摩擦磨损、网纹等情况的对比性能试验。结果表明,封严涨圈在端面进行松孔镀铬的工艺可行,松孔镀铬层与铸铁基体的结合力良好,硬度、厚度、网纹类型和深度均满足航标的要求。

Performing spongy chromium plating to the tight-enveloped sealing ring of certain engine to meet the requirements of assembling and application of engine.As per required by specification and condition of part,perform Cr plating on the test piece and scrap part,all test results meet the requirements of drawing.Compared with properties test results for friction wear testing and cob webbing etc.that the test pieces manufactured by two different plant,and based on the hardness and adhesion test of coating,it is...