Transactions of Materials and Heat Treatment

Title：Optimization on external high-pressure bulging of spiral stator based on finite element method

Authors： Wang Shuqiang Chen Haolei Qiao Jinmeng Chen Zhao Zhou You

Unit： Shenyang University of Chemical Technology Bluestar (Beijing) Chemical Machinery Co. Ltd.

KeyWords： step-bulging spiral stator external high-pressure bulging response surface model thinning rate

ClassificationCode：TG394

year,vol(issue):pagenumber：2022,47(8):95-101

Abstract：

Spiral stator parts are prone to cracking and wrinkling during the external high-pressure bulging process, and such parts have the characteristics of continuous smoothness and equal cross section area. Therefore, a optimization method of the process parameters in the external high-pressure bulging of spiral stator was proposed, and a response surface model was established with the maximum thinning rate as the optimization target and bulging pressure, spiral lead and friction factor as the optimization factors. Then, the optimal interactive optimization parameters combination of external high-pressure bulging for spiral stator was obtained with the bulging pressure of 193.121 MPa, the spiral lead of 810 mm, and the friction factor of 0.149 by the response surface analysis combined with finite element simulation. Furthermore, the bulging experiment was carried out by using the optimized process parameters, and the spiral stator parts with uniform wall thickness and small maximum thinning rate were obtained. The results of wall thickness measurement for the obtained parts by means of an ultrasonic thickness gauge show that the errors between experiment and simulation values are less than 2%, which verifies the feasibility of the optimization method.

Funds：

辽宁省自然科学基金资助项目(20170540722)

作者简介：王树强(1978-)，男，博士，副教授，E-mail：wsqwsq_2004@126.com；通信作者：陈昊雷（1997-），男，硕士研究生，E-mail：15905275133@163.com

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