我厂生产的GW5系列高压隔离开关上,继六种铝质零件全部实现压铸生产后,又有三种ZHPb59－1黄铜件压铸成功,投入生产。其中之一是触头,见图1,这个零件原来是用板材加工,既费工,也费料,满足不了生产的需求,后来我们改为失蜡铸造生产,虽能节省部分 I produced GW5 series of high-voltage isolation switch, following the completion of all six aluminum parts die-casting production, there are three ZHPb59-1 brass pieces die-casting success, into production. One of which is the contact, shown in Figure 1, this part was originally used for sheet metal processing, both labor, but also the cost of materials, can not meet the production needs, and later we lost wax casting production, although some savings