二辊斜轧延伸9Cr-1Mo钢厚壁管内表裂纹形成倾向性模拟研究

特殊钢 ›› 2012, Vol. 33 ›› Issue (4): 18-21.

二辊斜轧延伸9Cr-1Mo钢厚壁管内表裂纹形成倾向性模拟研究

尹元德^1,2, 李胜祗², 康永林¹, 王鹏展³, 王向东³, 李国涛³

1北京科技大学材料科学与工程学院，北京100083；
2安徽工业大学材料科学与工程学院，马鞍山243002；
3扬州诚德钢管有限公司，扬州225200)

收稿日期:2012-01-13 出版日期:2012-08-01 发布日期:2022-10-24
作者简介:尹元德(1970-),男，博士研究生，副教授，1991年北京航空航天大学毕业，管板成型工艺和数值模拟。
基金资助:
江苏省重大创新项目资助(BA2008084)

A Study of Simulation on Tendency of Inner Surface Crack of Steel 9Cr-lMo Heavy Wall Pipe Elongated by Two-High Cross Piercing Process

Yin Yuande^1,2, Li Shengzhi², Kang Yonglin¹, Wang Pengzhan³, Wang Xiangdong³ , Li Guotao³

1 College of Materials Science and Engineering, University of Science and Technology, Beijing 100083;
2 School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan 243002;
3 Yangzhou Chengde Steel Pipe Co Ltd, Yangzhou 225200

Received:2012-01-13 Published:2012-08-01 Online:2022-10-24

摘要/Abstract

摘要： 借助于商用有限元软件MSC.SuperForm,对φ485 mm×73 mm大口径厚壁9Cr-1Mo钢管二辊斜轧延伸过程进行了3D热力耦合模拟;采用Oyane韧性断裂准则分析了轧件损伤场及钢管内表裂纹的倾向性,发现钢管内表邻近芯棒接触区存在破裂高危带。研究了轧辊入口锥角对轧件损伤场的影响,结果表明,轧辊入口锥角由3.0°增至5.0°时,轧件最大损伤特征由0.520 7降至0.3544,发生内表裂纹的倾向性降低。

Abstract: The 3D thermo-mechanical simulation on two-high cross piercing elongating process of steel 9Cr-l Mo φ485 mm x 73 mm large size heavy wall pipe has been carried out by using commercial element software MSC. SuperForm. The damage field of rolling piece during elongation process and the tendency of inner surface crack of steel pipe are analyzed by using Oyane criterion for ductile fracture. It is found that there is a high dangerous crack band in internal surface of steel pipe adjoining contact zone with plug. The influence of roll entrance cone angle on damage field of rolling piece is studied. Results show that as the roll entrance cone angle increases from 3. 0° to 5. 0° the maximum damage characteristic value decreases from 0. 520 7 to 0. 354 4 and the tendency of inner surface crack reduces.

Key words: , Seamless Steel Pipe, Large Size Heavy Wall Pipe, Two-High Cross Piercing Elongation, Inner Crack, Numerical Simulation

尹元德, 李胜祗, 康永林, 王鹏展, 王向东, 李国涛. 二辊斜轧延伸9Cr-1Mo钢厚壁管内表裂纹形成倾向性模拟研究[J]. 特殊钢, 2012, 33(4): 18-21.

Yin Yuande, Li Shengzhi , Kang Yonglin , Wang Pengzhan, Wang Xiangdong , Li Guotao. A Study of Simulation on Tendency of Inner Surface Crack of Steel 9Cr-lMo Heavy Wall Pipe Elongated by Two-High Cross Piercing Process[J]. Special Steel, 2012, 33(4): 18-21.