... 胀形模 bulging dies 整形模 sizing dies 缩口模 necking dies ...
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... 精锻模 precision forging die 精压模 sizing dies 热压印模 hot-coining die ...
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The determination of entrance angle of both R coining dies and conical coining dies and the approach to eliminating bell shapes during sizing have been outlined.
入口形状为圆弧的整形模其入口曲率半径R的选择和入口形状为锥度的整形模其入口角度的选择，以及精整中消除喇叭口的措施。
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