沖壓工藝術語（5）
抽凸：沿著內孔周圍將材料參與變形，而其他材料不產生明顯的塑性流動，從而成形出低淺的凸包的一種沖壓工序。
鉚合：使兩部分材料結合成一個整體的一種沖壓工序。（它包括工件自鉚和多個工件對鉚）
壓印：強行局部排擠材料，在工序件表面形成淺凹花紋，圖案，文字或符號等一種沖壓工序，被壓印表面的背面并無對應淺凹和凸起。
Stamping process terminology (5)
Convexity: a stamping process in which the material is involved in deformation around the inner hole, while other materials do not produce obvious plastic flow, thus forming a low shallow convex hull.
Riveting: a stamping process that combines two parts of material into a whole. (it includes workpiece self riveting and multiple workpiece counter riveting)
Stamping: a stamping process in which materials are forced to be partially extruded to form a shallow concave pattern, pattern, character or symbol on the surface of the process part. There is no corresponding shallow concave or convex on the back of the surface to be stamped.
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