Transactions of Materials and Heat Treatment

Title：Simulation research on internal and external high pressure fillingdie bulging inner spiral curved surface of metal stator with equal wall thickness

Authors： Wang Shuqiang Qiao Jinmeng Liu Ximin Ni Hongqi

Unit： Shenyang University of Chemical Technology

KeyWords： equal wall thickness inner spiral curved surface high pressure bulging finite element analysis fillingdie

ClassificationCode：TG394

year,vol(issue):pagenumber：2018,43(6):67-70

Abstract：

For the high pressure bulging of spiral stator metal pipe with equal wall thickness, a process method of inside and outside high pressure bulging step by step was proposed, and the diameter of blank tube was between the major diameter and minor diameter of the spiral curved surface of tube. Then, the concave part and convex part of the tube were bulged by external and internal high pressure respectively, and the limit of bulging limit height on the thickness and geometric sizes of workpiece was reduced. Furthermore, the three-dimensional solid model and finite element model of spiral curved surface of internal and external die were established, and the bulging process was simulated by finite element software to reveal the forced flow rule of the metal tube contacting with regular spiral surface under uniform high pressure. Finally, the bulging experiment was designed and implemented, and the process method for internal and external die filling bulging step by step was verified. Thus, this method can greatly reduce the bulging pressure and increase the manufacturing efficiency of the spiral curved surface of stator.

Funds：

辽宁省自然科学基金资助项目（20170540722）；辽宁省“十三五”教育科学规划课题（JG17DB403）

王树强（1978-），男，博士，讲师；Email：wsqwsq_2004@126.com

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