液体氮化由于液体与工件直接传导加热，缩短了工件加热时间，提高了渗氮速度。
Because the liquid nitriding the liquid and the work piece direct conduction heating, reduced the work piece heating-up time, raised the azotize speed.
然后，用以对此规格的钢丝制造的气阀弹簧进行了低温液体软氮化处理。
Then, pneumatic valve spring made from this spring steel wire have been treated by this investigation of liquid tufftriding process.
采用以尿素为主要原料的液体软氨化工艺，对阀杆(35钢)进行了氮化处理。
The valve rod (steel 35) is nitrided in the fluid soft nitriding process, the main material being made up of urea.
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