根据内圈进行设计，对不锈钢板一次成形冲压。
According to the design inner ring, forming a stamping of stainless steel.
用超塑性成形工艺能一次成形出复杂形状的零件。
The complicated shaped parts are able to be singly formed by a superplastic forming process.
直纹滚花螺母采用冷挤压一次成形新工艺，成效显著。
There are lots of advantages by cold extrusion for straight knurl nut in a single process.
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