The valve rod (steel 35) is nitrided in the fluid soft nitriding process, the main material being made up of urea.
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。
2
The process is applied to alloy steel components which would normally be nitrided. it should be noted that the process has two main advantages over the traditional process.
这个过程是适用于合金钢部件通常将氮化。应当指出的是，这一进程有两个主要优势的传统工艺。
3
The microstructure and hardness of the layer of H13 tool steel gas-nitrided in different heat treatment conditions were studied by X-ray, SEM and micro-hardness test.