SCM420合金冷镦钢线材的开发

介绍SCM420合金冷镦钢的生产工艺和组织性能,指出添加Al可细化晶粒,使标准件在具有较高强度的同时易于加工;添加Cr和Mo可提高钢的强度和淬透性,使标准件在高温下能够保持常温时所具有的强度和韧性等力学性能。经过热机轧制后,线材达到了相同的退火效果,而且缩短了退火时间,使用结果表明线材的性能达到了用户的要求。

Development of SCM420 Alloy Cold Heading Steel Wire Rod

To introduce production process and microstructure property of SCM420 alloy cold heading steel.It is pointed out that adding Al can make grain fine and fasten with high strength can be machined easily,and adding Cr and Mo can improve strength and hardenability of steel and fasten has mechanical property of strength and toughness at high temperature as same as at normal temperature.After mechanical rolling at high temperature,wire rod has the same annealing effect and annealing time can be shortened.Use result shows that property of wire rod meet consumers′ requirements.