金属塑性成形是一种利用金属材料的塑性，对金属毛坯施加适当的能量和载荷，使金属毛坯发生塑性变形而形成具有一定几何形状和力学性能的零件或半成品件的成形工艺。
Metal forming is a kind of process to form billets into parts with proper shapes and mechanical properties, under huge energy and load by utilizing the plasticity of metal materials.
制造行业经常采用剪切和冲裁工艺将金属板材切成圆形毛坯。
The manufacturing industry often uses the shearing and punching processes to cut the metal sheet into circular blanks.
毛坯外形的设计是金属板料成形的重要环节。
According to sheet metal deep drawing processes, many design methods for the blank shape have been presented.
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