由机械委沈阳铸造研究所负责,榆茨液压件厂、天津市液压件铸造厂、永宁铸造厂、沈阳液压件厂参加和张家港市整流设备厂、天津市大宋铆造厂协作的电化学清砂工艺及设备研究项目,经过二年多的研究和生产验证,取得了良好效果。1987年12月在机械委 Shenyang Mechanical & Electrical Engineering Institute is responsible for Casting, Yuci hydraulic parts factory, Tianjin hydraulic parts foundry, Yongning foundry, Shenyang Hydraulic Parts Factory and Zhangjiagang City Rectification Equipment Factory, Tianjin Sangzai plant collaboration electrochemical sand cleaning process And equipment research projects, after more than two years of research and production verification, and achieved good results. December 1987 in the Mechanical Committee