摘要
通过Φ180mm× 2 0 0mm二辊实验轧机对成分 (% )为 0 0 5 3C 1 5 6Mn 0 0 4 6Nb 0 2 5Mo 0 0 14Ti 0 0 0 12B微合金化钢的轧制实验 ,验证了新建立的热轧板带晶粒尺寸的仿真模拟系统 ,得出晶粒尺寸的仿真计算值与实测值的相对误差≤ 8 3% ,并对该微合金钢 9道次 2 2 0 0mm× 14mm中板轧制时各道次钢板晶粒尺寸进行了计算。结果表明 ,精轧各道次均没有发生动态再结晶 ,在板厚 5 1 6mm轧至 2 2 0mm的 1～ 5道次 ,晶粒尺寸显著减小 ,由 4 5 μm降至 10 μm ,在板厚 2 2 0mm轧至 14 0mm的 6～ 9道次 ,晶粒尺寸减小不显著 ,由10 μm降至 7 5
The established simulation system of grain size of hot rolling strip was verified by Φ180×200 two-high mill to roll microalloying steel 0.53C-1.56Mn-0.046Nb-0.25Mo-0.014Ti-0.0012B in laboratory, it was obtained that the relative error of simulation calculated value to measured value was ≤8.3%, and the grain size of strip in each pass during 9 pass rolling of 2 200 mm×14 mm medium plate of the microalloying steel was calculated. The results showed that there was no dynamic recrystallizing during each finishing pass; during 1 to 5 pass with plate thickness 51.6 mm reducing to 22.0 mm, the grain size decreased obviously to 10 μm from original 45 μm, and during 6 to 9 pass with plate thickness 22.0 mm reducing to 14.0 mm, the grain size decreased in a less degree to 7.5 μm from 10 μm.
出处
《特殊钢》
北大核心
2004年第5期38-40,共3页
Special Steel
