高强度紧固件用冷作强化非调质钢的研究开发  

Develop and Research of Bolts with High Strength Cold Ardening of Non Tempered-Quenched Steel

作　　者：徐宏国[1] 于同仁[2] 

机构地区：[1]马钢股份公司第三钢轧总厂,安徽马鞍山243011 [2]马钢股份公司技术中心,安徽马鞍山243000

出　　处：《安徽冶金科技职业学院学报》2013年第1期8-11,共4页Journal of Anhui Vocational College of Metallurgy and Technology

摘　　要：采用冷作强化非调质钢来制造高强度紧固件,可省去钢材冷拔前的退火处理和螺栓成形后的调质处理,在很大程度上简化了生产工序,缩短了生产周期,降低了能源消耗,同时还避免了因热处理而造成的表面氧化、脱碳及工件变形等问题,因而具有显著的经济效益和社会效益,采用热机械轧制工艺,通过化学成分优化及使用技术研究,开发出了8.8、9.8、10.9级螺栓用冷作强化非调质钢。Cold hardening of non tempered- quenched steel is a kind of new type steel con- struetion, it can meet the quality target with no tempered - quenched treatment through Micro alloying, rolling control and cooling control. Micro alloying elements can produce carbon nitride diffusion precip- itation which would be precipitation strengthening and fine grain strengthening. Work hardening be produced on the basis of cold deformation hardening, it improve the steel strength ability. This article is about the development the 8.8, 9.8, 10.9 grade bolts with cold hardening of non - quenched steel through adopting hot mechanical rolling technology, Optimization of chemical composition and usage technology research.

关 键 词：冷作强化 非调质钢 紧固件 

分 类 号：TG335.1[金属学及工艺—金属压力加工] TG142.13[一般工业技术—材料科学与工程]