Transactions of Materials and Heat Treatment

Title：Application of downhill method in roll forming

Authors： Zhang Bao Ding Wuxue Peng Binbin

Unit： Nanjing University of Science and Technology

KeyWords： roll forming longitudinal strain downhill method COPRA

ClassificationCode：

year,vol(issue):pagenumber：2014,39(1):52-57

Abstract：

In the roll forming process, oversize longitudinal stretching causes a number of defects. At present,the way to reduce longitudinal strain is to increase molding passes. The downhill method molding is an effective way to reduce longitudinal stretching in the molding of pipe products. Taking the roof watts for an example, the downhill method was used in the molding process of non-pipe products ，and the computer-aided design software COPRA was used to design and simulate. The results show that compared with traditional methods, the using of downhill method molding makes the longitudinal strain in each pass be reduced significantly, and can effectively prevent the generation of various types of defects.

Funds：

江苏省科技支撑计划项目（BE2012174）

张宝（1987-），男，硕士研究生

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