The test of sulphurized tufftride process for treating the hotpiercing punch for steel pipes is introduced.
介绍了钢管热冲孔凸模硫氮碳共渗工艺试验。
2
The rational process for producing the steel is recommended on the basis of analyzing the emergence and developing mechanism of cracks in shells of the steel during hotpiercing.
分析了热穿孔过程中毛管裂纹的产生及扩展机理。推荐了生产该钢种的合理工艺。
3
The experimental investigation of high- temperature alloy piercing performances is made by using the hot torsion test and coning test;