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我们在某硫铁矿区施工时，水泵零件由于受硫磺水的诱蚀，消耗很快，特别是水泵阀芯常常供不应求。阀芯长80毫米左右，由于中间有4毫米厚的台阶直径22毫米，而两头的直径才15毫米。当时，分队修配组一直用φ25毫米的圆钢加工。这样工作量大，原材料浪费多。后来，我们设计了如下一套冲模，用φ16毫米圆铁，烧红冲压出中间的台阶，经过冲压出来的坯料，车工加工可以提高工效两倍多，同时节省了原材料，满足了生产的需要。见附图。
When we are constructing in a certain pyrite area, the parts of the pump are consumed quickly due to the sulphering of the sulfur water. In particular, the water pump spool is often in short supply. The spool is about 80 millimeters long, with a 4 millimeter thick step diameter of 22 millimeters in the middle, while the two heads are only 15 millimeters in diameter. At that time, the team repair team had been processing φ25 mm round steel. In this way, the workload is large and the raw materials are wasted. Later, we designed the following set of die, with φ16 mm round iron, red-hot stamping the middle of the steps, through the blanks stamped out, lathe processing can improve work efficiency more than doubled, while saving raw materials, to meet the production needs. see Attachment.