热轧穿孔内部组织控轧的工业性试验研究  

INDUSTRIAL STUDY OF CONTROLLED HOT CROSS PIERCING

作　　者：双远华[1] 张中元[1] 赖明道[2] 

机构地区：[1]南京航空航天大学 [2]燕山大学

出　　处：《钢铁》2002年第6期42-47,共6页Iron and Steel

摘　　要：针对某钢铁公司76机组穿孔过程进行了工业性试验。在设定的轧制条件和冷却条件下 ,对轧件内部组织的晶粒大小做了测定。应用有限元方法计算了穿孔中应力、应变和温度等参数的分布状态 ,利用再结晶数学模型对该过程内部晶粒进行了预测。通过室温条件下的理论与实测比较 ,认为该热—力耦合有限元模型与内部组织数学模型之结合模型 ,对预测轧件内部组织具有一定的可靠性。进而可对斜轧工艺参数进行调整 ,使管轧过程中穿孔毛管具有良好的内部质量。为后续工序提供高质量的坯料 ,减少不必要的轧制道次。The microstructure of tube blank after controlled cross piercing on φ76 mill has been studied. Under certain technical and cooling conditions, the distribution of stress, strain and temperature etc. has been calculated by thermo-mechanical FEM models for cross piercing. The combining a mathematical model of recrystallization and a FEM model for strain and temperature analysis the prediction of austenite and ferrite grain size in the tube blank was performed. Comparing theoretical results with experimental ones at room temperature, the mathematical model was proved reliable. The technological parameters can be adjusted to get suitable microstructure in this way for better quality of seamless tube and pass schedule simplification.

关 键 词：斜轧穿孔 晶粒 有限元 控制轧制 工业试验 

分 类 号：TG335.11[金属学及工艺—金属压力加工]