Fe-3%Si钢CSP工艺轧制的热模拟试验

Study on Thermal Simulation Experiment of CSP Hot Rolling of Fe-3%Si Steel

针对Fe-3%Si钢,根据CSP生产线的工艺特点,模拟现场CSP工艺条件进行加热、轧制和卷取热模拟试验,采用Gleeble-1500D热模拟试验机研究Fe-3%Si钢在模拟CSP工艺热轧过程中的再结晶行为。结果表明,道次压下量为45%-40%-40%-20%-35%-35%的压下工艺条件下,获得的晶粒尺寸较为细小,动态再结晶完成较好;随着卷取温度的提高,晶粒平均尺寸减小,且卷取温度在650℃时,晶粒相对均匀。研究结果可为CSP工艺取向硅钢热变形行为的研究提供试验依据。

The thermal simulation experiments of heating,hot rolling and coiling of Fe-3%Si steel are performed by simulating on site CSP process and environment.The recrystallization behavior of Fe-3%Si steel in the simulated CSP hot rolling process is studied by Gleeble-1500D thermal simulator.The results show that the process with the pass reduction of 45%-40%-40%-20%-35%-35% can obtain finer grains,so the dynamic recrystallization has accomplished better in this process.With the increase of coiling temperature,the average grain size becomes smaller.When the coiling temperature is 650 ℃,the grain size is relatively uniform.The results can provide an experimental basis for the study of thermal deformation behavior of grain-oriented silicon steel prepared by CSP process.