Transactions of Materials and Heat Treatment

Title：Research on multi-step forming process for joint of petroleum drilling rig

Authors： Yang Xiangdong Xu Xincheng Tian Jiao Zhao Zhonghua

Unit： Engineering Practice and Training Center Shanghai University of Engineering Science

KeyWords： joint of petroleum drilling rig finite element analysis multi-step forming

ClassificationCode：

year,vol(issue):pagenumber：2014,39(10):20-24

Abstract：

Based on the finite element theory for rigidity visco-plasticity, the forming process for joint of petroleum drilling rig was simulated through Deform-3D, and then the laws of material flow, stress field and load during the forming process were analyzed which provided the basis for the forming process optimization of joint of petroleum drilling rig. Using the optimized process of multi-step forming for joint of petroleum drilling rig, the critical problem of the location of horizontal sub-mold subtended hot extrusion was successfully solved, the better forming quality of the coning part was obtained, and the shape of forgings was closer to the shape of working part. Not only the forming force is deduced and material is saved, but also the distribution of the metal flow is along the cone, which decreases the exposed metal flow during the process of machining to improve the strength of thread on the coning part and the service life for joint of petroleum drilling rig.

Funds：

上海市宝山区科学技术委员会产学研合作项目:石油钻具关键零件精密塑性成形技术与数值仿真项目（CXY-2012 -19）；上海市085内涵建设项目（nhjx-2014-11）

杨向东(1987-),男，硕士研究生

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