论文部分内容阅读
在测定P92钢高温流动应力和热物性参数的基础上,借助于有限元软件MSC.Superform对大口径P92厚壁管二辊斜轧穿孔过程进行3D热力耦合模拟;采用Oyane韧性断裂准则分析轧件损伤场及钢管分层缺陷的倾向性,发现与顶头前端接触的轧件內表皮下一定深度区域存在破裂高危带。研究了送进角对损伤场的影响,结果表明:轧件最大损伤特征值随送进角的增大而减小,发生分层缺陷的倾向性降低。
Based on the measurement of high temperature flow stress and thermal properties of P92 steel, 3D thermal coupling simulation was carried out by means of finite element software MSC.Superform. The Oyane ductile fracture criterion was used to analyze the rolling The damage field and the delamination tendency of the steel pipe. It is found that there is a high-risk zone of rupture in the depth area under the inner epidermis of the rolling contact with the head. The effect of feed angle on the damage field is studied. The results show that the maximum damage characteristic value decreases with the increase of feed angle and the tendency of delamination defects decreases.