摘要
针对特厚板轧制中钢板心部变形小,中心晶粒粗大的问题。采用有限元MSC.Marc软件建立了特厚板轧制的仿真模型,研究了在42Cr Mo特厚板轧制过程中引入厚度方向上的温度梯度对钢板心部应变的影响,并与传统均温轧制进行对比,计算了两种温度场条件下奥氏体再结晶的晶粒尺寸。采用大试样平面应变实验对模拟结果进行验证。研究结果表明温度梯度轧制有利于减小特厚板心部晶粒尺寸,进而可以提高特厚板性能。
The central layer of the ultra - heavy plate is hardly deformed by rolling process and the central microstructure is coarse. The FEM modeling of ultra - heavy plate rolling was created by MSC. Marc program, and the effect of temperature gradient on the strain in the plate core was investigated during 42CrMo ultra - heavy plate rolling process. Be- sides, the grain size after austenite recrystallized was calculated compared with tradition process. The result of simulation was proved by large specimen plane strain experiment, and indicated that the process with temperature gradient is favor of grain refining in plate core, moreover, increasing the mechanical property of ultra - heavy plate.
出处
《河南冶金》
2015年第1期1-4,14,共5页
Henan Metallurgy
关键词
特厚板
有限元
控制轧制
温度梯度
平面应变
ultra- heavy plate FEM controlled rolling temperature gradient plane strain
