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我厂某高频元件,如图1所示,用纯铝L_4板料制成。零件的几何形状要求高,内表面光洁度▽7。按老工艺,采用失蜡铸造、车、铣、钳工精抛制成。但由于采用失蜡铸造,零件出现了缩孔,采用补焊,出现变形,不能满足产品质量要求而报废,废品率达到80～90％。为了保证产品质量,缩短制造周期,采用了强力旋压与涨整形相结合的工艺。经过反复试验,终于试成,并投入了批量生产,质量稳定,提高工效几十倍以上。
I plant a high-frequency components, shown in Figure 1, made of pure aluminum L_4 sheet. Parts require high geometry, the inner surface finish ▽ 7. By the old technology, the use of lost wax casting, car, milling, fitter precision polishing made. However, due to the use of lost wax casting, parts shrinkage occurs, the use of welding, deformation, can not meet the product quality requirements and scrapped, the rejection rate reached 80 to 90%. In order to ensure product quality, shorten the manufacturing cycle, using a combination of strong spinning and shaping process. After repeated tests, finally try into, and put into mass production, quality and improve work efficiency several times.