皮尔格热轧双层复合管制坯过盈量的仿真研究
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摘要
为了研究皮尔格热轧双层复合管内外管坯的配合问题,本文对皮尔格热轧45钢与316不锈钢复合管坯进行了数值仿真,通过计算得出复合管制坯中的最佳过盈量为114～163μm。分析研究了过盈量对皮尔格热轧复合管坯的金属流动、内外层壁厚变化、内外管及复合层等效应力分布的影响。结果表明:合适的过盈量使轧制过程中内外管复合层始终没有发生相对滑移,保证了内外层金属在周向、轧制方向流动以及应力分布上的连续性。
In order to study the combination of inner and outer billets of Pilger hot rolled double-layer composite pipe, the numerical simulation of the composite billet of 45 steel and 316 stainless steel during Pilger hot rolling was carried out.According to the calculation, the optimum magnitude of interference of billet in composite pipe is 114-163 μm. The influences of magnitude of interference on metal flow, thickness change of inner and outer wall, distribution of equivalent stress in inner and outer tubes and composite layer of Pilger hot rolled composite pipe billet were studied. The results show that the proper magnitude of interference makes the composite layer between inner and outer pipes never slip in the rolling process, which ensures the continuity of metal flow in circumferential, rolling directions and stress distribution in the inner and outer layers.
In order to study the combination of inner and outer billets of Pilger hot rolled double-layer composite pipe, the numerical simulation of the composite billet of 45 steel and 316 stainless steel during Pilger hot rolling was carried out.According to the calculation, the optimum magnitude of interference of billet in composite pipe is 114-163 μm. The influences of magnitude of interference on metal flow, thickness change of inner and outer wall, distribution of equivalent stress in inner and outer tubes and composite layer of Pilger hot rolled composite pipe billet were studied. The results show that the proper magnitude of interference makes the composite layer between inner and outer pipes never slip in the rolling process, which ensures the continuity of metal flow in circumferential, rolling directions and stress distribution in the inner and outer layers.
引文
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[3] Chen W C,Petersen C W. Corrosion performance of welded CRA-lined pipes for flow lines[J].SPE Production Engineering,1992,7(4):357-378.
[4]王纯,毕宗岳,张万鹏,等.国内外双金属复合管研究现状[J].焊管,2015,38(12):7-12.
[5]濮良贵,陈国定,吴立言.机械设计[M]. 9版.北京:高等教育出版社,2013:131-136.
[6]李传民,王向丽,闫华军,等.DEFORM5.03金属成形有限元分析实例指导教程[M].北京:机械工业出版社,2007.
[7] Montmitionnet P,Loge R,Hamery M,et al. 3D elasticplastic finite element simulation of cold pilgering of zircaloy tubes[J].Journal of Materals Processing Technology,2002,125(9):814-820.
[8]楚志兵,吕阳阳,黄庆学,等.皮尔格轧机冷轧不锈钢管回弹预测模型的建立与验证[J].四川大学学报(工程科学版),2015, 47(2):168-174.