Transactions of Materials and Heat Treatment

Title：Analysis on upsetting of head of outer hexagonal tube

Authors： Huazhong University of Science and Technology Yu YanqinHuang Zaowen Shenli Petroleum Administration Wang ShaoliCheng Peng

Unit：

KeyWords： UpsettingUpperbound methodDeformation pressure

ClassificationCode：TG316

year,vol(issue):pagenumber：1999,24(3):0-0

Abstract：

According to upperbound method,kinematically admissible velocity field and strain rate field were established during the head of tubebillet to be upset outer hexagonal tube.A serises of deformation power rate and equivalent strain rate were also obtained.Finally,deformation pressure and the optimum technique parameters were defined by the principle of minimum energy.The results can be used for determining process and die design on upsetting of head of outer hexagonal tube.

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Reference：

1B．Aritzur．MetalForming，TheApplicationofLimitAnalysis．MarcelDekker，Inc．N．Y．1980．2林治平．上限法在塑性加工工艺中的应用．北京：中国铁道出版社，1991．3肖景容、李尚健主编．塑性成形模拟理论．武汉：华中理工大学出版社，1994．4黄早文、俞彦勤、刘和平．浅析空心抽油杆头部锻造成形．石油机械，1994，22（12）：12～1

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