Transactions of Materials and Heat Treatment

Title：Influence law of round hole flanging parameters on forming quality of joint flange based on orthogonal experiment

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ClassificationCode：TG386

year,vol(issue):pagenumber：2020,45(11):36-43

Abstract：

For the typical automobile structural part of joint flange, the finite element model was established by simulation software Dynaform, and the influences of four forming process parameters of fillet radius of punch, blank holder force, friction coefficient and clearance between punch and die on the forming quality in the round hole flanging process were studied and simulated. Then, the orthogonal experiment was designed, the simulated calculation was conducted again, and the significant parameters affecting the forming quality of joint flange were evaluated by the range method. Finally, under the comprehensive consideration of forming height, no wrinkles and cracks in the flange area and flatness, the combination of the best process parameters with the fillet radius of punch of 13 mm, the clearance between punch and die of 2.65 mm, the friction coefficient of 0.15 and the blank holder force of 55 kN was confirmed. Furthermore, the best process parameters were inspected in production experiment, a certain deviation between simulation and actual production was found, and the maximum deviation was 7% which was within the acceptable range. The result shows that the simulation experiment plays a great role in the production practice and provides some references for the stamping of similar products.

Funds：

广西中青年能力提升项目（2018KY1162）；广西科技厅重点研发项目（AB16380288）

赵博宁（1981-），女，硕士，副教授 E-mail：48100687@qq.com

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