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通过工艺试验，确定了在拉深坯料上，预制毛孔毛槽的办法，仅用一套拉深模就完成了薄料宽凸缘筒形带孔槽零件的拉深。
Through the process test, the method of preforming the pores on the blank is confirmed, and the deep drawing of the thin flange with the thin hole is completed by only one set of drawing die.