Transactions of Materials and Heat Treatment

Title：Design and optimization on cold bending parameters for sporting channel steel

Authors： Gu Zezhong Meng Ke Ren Kun Zhou Jiayin Chen Yinghao

Unit： Zhejiang Sci-Tech University Zhejiang Weilian Technology Co. Ltd.

KeyWords： sporting channel steel cold bending bending angle number of forming passes Hauschild model

ClassificationCode：TG316.1+4

year,vol(issue):pagenumber：2022,47(10):90-95

Abstract：

In order to avoid the defects of bending angle thinning and fillet sharpening in cold bending process of sporting channel steel, improve the joint stiffness, ultimate bearing capacity and mechanical properties of components, the design and optimization of the number of forming passes and the bending angle increment were researched. Then, considering the parameters such as blank thickness, bending angle and bending radius, the actual material width was calculated, and the forming sequence was determined. Furthermore, the total number of passes was calculated according to the empirical formula for the number of forming passes, and the bending angle increment between each pass was calculated by the bending angle distribution formula. In addition, the finite element simulation analysis was conducted by Hauschild model, the bending angle increment between each pass was adjusted by the simulate results to determine the optimal pass number and the bending angle increment. Finally, the validity of the optimization results was verified in combination with the production equipment. The results show that the unreasonable strain exceeding the limit value during the cold bending process is analyzed based on the simulation results of software COPRA, and the maximum strain value in the cold bending process is reduced by changing the number of forming passes and the bending angle increment, which can effectively reduce the defects of bending angle thinning and fillet sharpening.

Funds：

浙江省重点研发项目（2020C01085）；浙江省“万人计划”杰出人才项目（2018R51008）

顾泽中（1998-），男，学士,E-mail：1369961361@qq.com;通信作者：任锟（1979-），男，博士，副教授,E-mail：renkun_2008@sina.com

Reference：

[1]Safdarian R, Naeini H M. The effects of forming parameters on the cold roll forming of channel section[J]. Thin-Walled Structures, 2015, 92: 130-136.

[2]Mohammdi N H, Moslemi N H, Safdarian R. Effect of forming parameters on edge wrinkling in cold roll forming of wide profiles[J]. The International Journal of Advanced Manufacturing Technology, 2019,101:181-194.

[3]Abeyrathna B, Rolfe B, Weiss M. The effect of process and geometric parameters on longitudinal edge strain and product defects in cold roll forming[J]. The International Journal of Advanced Manufacturing Technology, 2017, 92: 743-754.

[4]Badr O M, Rolfe B, Weiss M. Effect of the forming method on part shape quality in cold roll forming high strength Ti-6Al-4V sheet[J]. Journal of Manufacturing Processes, 2018, 32(4): 513-521.

[5]任巍.铜管弯管工艺参数计算方法[J].制冷与空调, 2020, 20(9): 39-41,45.

Ren W. Calculation methods of bending process parameters of copper tube[J]. Refrigeration and Air-conditioning, 2020, 20(9): 39-41, 45.

[6]郗文博,赵云涛,李万全.外卷边槽钢辊弯成型过程模具的设计及可靠性分析[J].机械管理开发,2020,35(1):14-16.

Xi W B, Zhao Y T, Li W Q. Die design and reliability analysis of roller bending forming process of coiled channel steel[J]. Mechanical Management and Development, 2020, 35(1):14-16.

[7]付志强,安子军,杜凤山,等.方矩形管连续辊弯成型延伸规律[J].吉林大学学报:工学版,2015,45(2):487-493.

Fu Z Q, An Z J, Du F S, et al. Elongation of rectangular tube in continuous roll forming[J]. Journal of Jilin University: Engineering and Technology Edition, 2015,45(2):487-493.

[8]马立廷,刘东海,高强,等.反向弧度变曲率拉弯成型中工艺参数研究分析[J].制造技术与机床,2019,(11):82-85.

Ma L T, Liu D H, Gao Q, et al. Research and analysis of technological parameters in reverse radius variable curvature bending[J]. Manufacturing Technology & Machine Tool, 2019, (11):82-85.

[9]成骏,阚小如,陶义建. 基于Dynaform的飞机封严板压窝成形工艺分析与优化设计[J]. 锻压技术, 2021, 46(1): 37-42.

Cheng J，Kan X R，Tao Y J. Analysis and optimal design on press dimple forming process for aircraft seal plate based on Dynaform [J]. Forging & Stamping Technology，2021,46(1):37-42.

[10]George T H.冷弯成型技术手册[M].刘继英, 译. 北京：化学工业出版社，2007.

George T H. Cold Bending Technical Manual [M]. Translated by Liu J Y. Beijing：Chemical Industry Press，2007.

[11]小奈弘. 冷弯成型技术[M]. 刘继英，译. 北京：化学工业出版社，2007.

Hiroshi Ona. Cold Bending Technology [M]. Translated by Liu J Y. Beijing：Chemical Industry Press，2007.

[12]王传红,骆晶,黄勇军,等.基于COPRA的电梯导轨辊弯成型仿真与模具调试研究[J].机械设计与制造, 2020, (1):72-74,79.

Wang C H, Luo J, Huang Y J, et al. Research on simulation and die debugging of roll forming of elevator guide tube based on COPRA[J]. Machinery Design & Manufacture, 2020,(1):72-74,79.

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