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鸡西矿务局机电厂采用低温镀铁工艺修复液压支柱,技术经济效益显著。过去,液压支柱采用直流电高温镀铁修复,镀层硬度低,耐磨性差,修复质量达不到要求。今年下半年,该厂改变了直流高温镀铁工艺,采用不对称交流—直流镀铁工艺,使镀层硬度、厚度、结合强度都达到了修复质量标准。其工艺过程是:先在被修复工件表面用不对称交流电施镀打底,获得与工件表面结合力较强的软铁层,再不断调节和
Jixi Mining Bureau mechanical and electrical power plant using low-temperature iron plating repair hydraulic props, significant technical and economic benefits. In the past, hydraulic pillars using DC high temperature iron plating repair, coating hardness is low, poor wear resistance, repair quality can not meet the requirements. The second half of this year, the plant changed the DC high temperature iron plating process, the use of asymmetric AC - DC iron plating process, the coating hardness, thickness, bonding strength have reached the repair quality standards. The process is as follows: First, the surface of the workpiece to be repaired by asymmetric alternating current plating is applied to obtain a strong binding force with the surface of the soft iron layer, and then continuously adjust and