控轧控冷工艺对低碳贝氏体钢组织性能的影响  

Influence of controlled rolling and controlled cooling technology on microstructure and performance of low-carbon bainitic steel

作　　者：李国彬[1] 刘昌明[1] 

机构地区：[1]武汉钢铁股份有限公司,湖北武汉430083

出　　处：《轧钢》2005年第4期10-13,共4页Steel Rolling

摘　　要：通过在中厚板轧机上进行的控轧控冷工艺试验,研究了不同控轧控冷条件对低碳贝氏体钢DB685组织和性能的影响,得出增大变形量可得到细小均匀的晶粒组织,使钢材的强韧性提高;增大轧后冷却速度能有效地提高钢板强度。并提出了工业生产DB685钢的控轧控冷工艺参数:终轧温度≤850℃,轧后冷却速度≥5℃/s,终冷温度≤650℃。The influence rules of controlled rolling and controlled cooling technology on microstructure and perfor mance of low-carbon bainitic steel are obtained by the test on the heavy plate mill. The technology parameters of in dustry producing DB685 steel, which are finishing temperature ≤850°, cooling speed after rolling ≥5℃ /s and fin ishing cooling temperature≤650℃,are put forward.

关 键 词：低碳贝氏体钢 DB685 控轧控冷工艺 组织和性能 

分 类 号：TG335[金属学及工艺—金属压力加工]