拉伸件加工时主要是依靠压力机的压力，将金属或非金属材料，通过冲压模具加工而成的。拉伸件加工的工件精度很高，可达到微米级别。拉伸件比其它加工件有很大的长处：轻、薄、分布均匀、强有力的抗压性。加工时它都是大批量生产而成，缩短加工时间，一次到位成形，不需要再作其它加工。

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