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Formation and Laws of Convex on Single-Point Thermal Incremental Forming Part

Volume 14, Number 12, December 2018, pp. 3247-3256
DOI: 10.23940/ijpe.18.12.p34.32473256

Pengtao Shia,b, Yan Lia, and Mingshun Yanga

aSchool of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an, 710048, China
bCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xi’an, 710021, China

(Submitted on September 12, 2018; Revised on October 16, 2018; Accepted on November 8, 2018)


In the process of single-point thermal incremental forming, the phenomenon of bulging on the bottom of the forming part is called convex. It is an important factor that affects the forming precision. This article took AZ31B magnesium alloy sheet metal as the research object and carried out the numerical simulation of single-point thermal incremental forming process. With the simulated data, this article analyzed the causes of convex, studied the influencing factors, achieved the influencing laws of each factor and verified the conclusion. The results showed that changes of forming temperature influenced the forming performance of the material, thus affecting the size of the convex. Single factors, such as the distance between the bottom side length and the layer of the forming part, have certain effects on the convex. During the forming process, these laws can be used to reduce the convex on the bottom surface of the forming part by adjusting the process parameters, so as to improve the machining precision of the forming part.


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