Either direct quenching or reheated quenching is adopted after the workpieces are carbonized.
工件经渗碳后是采用直接淬火工艺还是重新加热淬火工艺关系到工件的机械性能.
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The combination technics of controlled rolling and direct quenching for pressure vessel steel was studed.
研究了控制轧制和直接淬火相结合生产压力容器钢的工艺.
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