... double quench hardening 二重淬火 double quenching 二重淬火 double reduction gearbox 两级减速装置 ...
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... double pass preheater 双程预热器 Double quenching 双重卒火 double side lapping machine 双面磨光机 ...
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In addition, to weaken the effect of double quenching on the microstructure and properties of ASTM4130 steel, multi-pass welding and temper bead should be adopted.
另外为消除二次淬火对ASTM 4130钢组织和性能的影响，应采用多层多道焊，并添加回火焊道。
For this reason, special inductor and fixture have been designed and the heat treatment problem of the reverse fork has been successfully solved by double high frequency quenching.
为此，设计制造了特殊的感应器和工装夹具，采用二次高频淬火工艺解决了该倒挡拨叉的热处理难题。
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