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图1为插针冲件图。此冲件小,材料 为锡青铜弹性材料,尤其是零件尾部截面为 0.3×0.4的成型是个复杂的技术问题。
Figure 1 is a needle punch map. The stamping is small, the material is a bronze elastic material, especially the part tail section of 0.3 × 0.4 forming is a complex technical issue.