卷取温度对CSP工艺下冷轧深冲带钢组织和析出影响  

Influences of Coiling Temperature on Microstructure and Precipitation of Cold Rolled Deep Drawing Sheet Produced by CSP Process

作　　者：程晓杰[1] 刘雅政[1] 周乐育[1] 武磊[1] 闫波[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]包头钢铁集团公司薄板厂,内蒙古包头014010

出　　处：《钢铁》2011年第2期53-57,共5页Iron and Steel

摘　　要：通过现场试验,研究了卷取温度对CSP工艺下冷轧低碳钢板组织和析出的影响。试验结果表明:包钢SPCD热轧板的显微组织均为多边形铁素体和很少的珠光体,随着卷取温度升高,渗碳体析出明显增多,呈白亮条块状的渗碳体沿晶界析出。CSP流程热轧后AlN的析出量不大,但高温卷取时的AlN析出要高于低温卷取的,卷取温度为600℃时,渗碳体级别与AlN的析出均得到很好的控制,同时{111}织构取向分布密度达到最高,从而更有利于提升冷轧深冲带钢的成形性能。Influences of coiling temperature on microstructure and precipitation of cold rolled deep drawing sheet produced by CSP process were investigated through field experiments.The experimental results show that： microstructures of SPCD hot rolled sheets of Baotou Steel are composed of polygonal ferrites and a little pearlite,as the coiling temperature rises,the amount of cementite precipitation increases significantly,white-bright strip or block shaped cementite precipitates on intergranular boundary.After hot rolled by CSP process,only a little AlN precipitates,but the amount of AlN precipitation at high coiling temperature is bigger than that of the low coiling temperature.When the coiling temperature is 600 ℃,the cementite class and precipitation of AlN turn ideal,at the same time,the value of {111} texture is the highest,which is beneficial to the formability of the sheets.

关 键 词：CSP流程 组织 渗碳体 ALN 织构 

分 类 号：TG335.12[金属学及工艺—金属压力加工]