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我公司铸铁厂的造型生产是树脂砂与粘砂并存。粘土砂所需的粘士粉．从前是外购粘土块．自行加工成粉状使用。1997年，在对原粘土系统进行了详细的成本核算，并对市场进行了调研后，决定对粘土系统进行改造。经过4个月的设计、制造、安装和调试，终于于1998年8月底安装试车成功?
Cast iron plant in our company is the production of resin sand and sticky sand coexist. Clay sand required viscous powder. In the past is the purchase of clay blocks. Self-processed into powder used. In 1997, following a detailed costing of the original clay system and the investigation of the market, it was decided to revamp the clay system. After 4 months of design, manufacture, installation and commissioning, finally at the end of August 1998 installation test success?