Transactions of Materials and Heat Treatment

Title：Thinning analysis on large four-roll plate rolling machine based on DB.12Cr2Mo1V steel

Authors： Gao Shujuan

Unit： Zibo Vocational Institute

KeyWords： DB.12Cr2Mo1V steel four-roll plate rolling machine thinning amount equivalent plastic strain finite element simulation

ClassificationCode：TG335

year,vol(issue):pagenumber：2019,44(12):33-39

Abstract：

A sheet rolling model was built by finite element analysis simulation software Simufact, and the simulation design of the rolling process for DB.12Cr2Mo1V steel was developed. Then, the position where the maximum thinning amount of sheet occured was found and compared with the measured amount in the actual production in order to grasp the thinning mechanism in the plastic forming technology of sheet metal and form an effective control method of defects. The results of finite element analysis show that the maximum value of equivalent plastic strain in the sheet forming process occurs at the edge of sheet, which is caused by the excessive extrusion of sheet by the left side roller in the third pass, and the neutrality layer of sheet is moved inward. Furthermore, the maximum thinning amount in the sheet forming process occurs at the front end of sheet, and the thinning amount is 2.2 mm, which is in good agreement with the measured results in the actual production. Finally, a targeted optimization scheme is proposed, which has certain reference value for the actual production.

Funds：

高淑娟（1980-）女，硕士，讲师 E-mail：937645205@qq.com

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