为了能给CSP轧制含Nb、V微合金钢时采用的“机架空过”工艺提供理论指导,在采用实测轧制数据验证组织演变模型的基础上,模拟了F2和F3机架空过工艺对组织演变和平均流变应力(MFS)的影响。结果表明:对模拟的钢种,与无空过道次轧制工艺相比,在不降低道次温度的情况下,采用F2机架空过时,可避免混晶,且各道次平均流变应力波动较小。而采用F3空过时,易产生混晶,平均流变应力波动较大。 In order to provide theoretical guidance for the CSP rolling process of Nb and V microalloyed steels, and to verify the microstructure evolution model by using the measured rolling data, the simulation of the F2 and F3 racking Effect of Technology on Microstructure Evolution and Average Flow Stress (MFS). The results show that the mixed steel can avoid the mixed grain and the mean flow stress fluctuation of each pass can be avoided by adopting F2 rack overdraft without reducing the pass temperature compared with the pass without pass. Smaller. The use of F3 obsolete, easy to produce mixed crystal, the average flow stress fluctuations.