控轧控冷工艺对汽车大梁板组织及冷弯性能的影响  

Effect of Thermomechanical Controlled Processing on Microstructure and Cold Bending Properties of Automobile Beam Steel

作　　者：郑东升[1] 朱伏先[1] 李艳梅[1] 刘勇 佘光夫 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004 [2]攀枝花钢铁集团有限责任公司热轧板厂,四川攀枝花617067

出　　处：《中国冶金》2009年第5期17-20,共4页China Metallurgy

基　　金：国家高技术研究发展计划资助项目(2001AA332020-01)

摘　　要：在攀钢热轧板厂对汽车大梁板进行了控轧控冷试验,分析了终轧温度、轧后冷却方式以及卷取温度对汽车大梁板显微组织及冷弯性能的影响。结果表明:采用较低的终轧温度830℃、卷取温度600℃以及前段冷却的轧后冷却方式,汽车大梁板的铁素体晶粒细小均匀,珠光体分布弥散,并获得了良好的冷弯性能。The trial of thermomechanical controlled processing was conducted in the hot strip mill of Panzhihua, and effects of finish rolling temperature, coiling temperature and cooling pattern after rolling on the microstructures and cold bending properties of automobile beam steels were analyzed. The results show that refine homogeneous ferrite grains and dispersed pearlite can be obtained when the low finish temperature 830℃, coiling temperature 600 ℃ and fore-stage cooling after rolling are adopted, and the automobile beam steels have good cold bending properties.

关 键 词：控轧控冷 汽车大梁板 显微组织 冷弯性能 

分 类 号：TG335.5[金属学及工艺—金属压力加工]