柔性轧制Q235B和Q345B钢的生产实践  

Productive practice of flexible rolling Q235B and Q345B steel

作　　者：杨玉[1] 杨旭[1] 张吉富[1] 陈昕[1] 付青才[1] 刘志伟[1] 

机构地区：[1]鞍钢股份有限公司,辽宁鞍山114009

出　　处：《金属热处理》2013年第4期49-52,共4页Heat Treatment of Metals

摘　　要：为解决用户个性化需求与企业规模化生产之间的矛盾,结合生产实际,用一种Q235B普碳钢铸坯按Q235B和Q345B两种强度级别热轧带钢要求进行生产试验。结果表明,利用控轧控冷技术的细晶强化与相变强化效果,可以用Q235B普碳钢铸坯生产出完全满足Q345B要求的热轧带钢,降低Q345B高强带钢的生产成本,实现了Q235B和Q345B两个强度级别热轧带钢的柔性生产。控轧控冷钢板的屈服强度可达395 MPa以上,抗拉强度可达510 MPa以上,韧塑性也满足标准要求。In order to solve the contradiction between the individual demands of different consumers and mass production of the company, the productive test was carried out according to the requirements of Q235B and Q$45B hot rolling steels by use of the same Q235B ingot casting, based on product practical situation. The results show that Q235B ingot casting can be used to produce Q345B hot rolling strip steel through controlling rolling and cooling, according to the theory on the fine-graining strengthening and phase transformation strengthening. This can reduce the cost of Q345B hot rolling strip steel. At the same time, the flexible product about Q235B and Q345B steels is realized. Yield strength of the steel plate controlled rolling and cooling is above 395 MPa. Tensile strength is above 510 MPa, and ductility and plasticity are met the standard.

关 键 词：柔性生产 控轧控冷 珠光体 铁素体 Q235B钢 Q345B钢 

分 类 号：TG142.41[一般工业技术—材料科学与工程]