rolling draught
... rolling direction (RD)轧制方向 rolling draught轧制压缩率，每道压下量 rolling edge飞翘，耳子 ...
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用塔形试样对比研究了水平连铸管坯和轧制管坯穿孔时顶头前压缩率对孔腔形成的影响。
The effect by pre-plug compression rate on formation of the cavity was investigated in a comparative method with step-down test samples of HCC billet and rolled bloom respectively.
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