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Open AccessArticle

Forming Quality Analysis on the Cold Roll Forming C-channel Steel

1
College of Mechanical Engineering, Zhejiang Industry Polytechnic College, Shaoxing 312000, China
2
College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310000, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(10), 1911; https://doi.org/10.3390/ma11101911
Received: 13 September 2018 / Revised: 30 September 2018 / Accepted: 2 October 2018 / Published: 9 October 2018
Cold roll forming, as a metal plastic forming process, is still mainly used in industrial production by the trial-and-error method, which wastes a lot of time and materials. In this paper, the C-channel steel is taken as the research object. First, the empirical equations of forming passes are verified and analyzed, then the cold roll forming model of C-channel steel is established, the forming quality of each pass and the stress-strain distribution of the whole sheet metal are analyzed, and the validity of the model is verified by experiments. The residual stresses of the web zone and flange of the finished product were measured. The results show that the empirical formulas are still not universal and the forming quality of the bite zone is poor. It needs to be adjusted by improving the distribution of deformation. The external surface of the C-channel steel is undertensile stress, while the internal surface is undercompressive stress, and the residual stresses of the flange are far greater than those of the web zone. The research provides a reference for the design of the bite zone and the number of forming passes. View Full-Text
Keywords: cold roll forming; C-channel steel; forming passes calculation; bite zone; residual stress; X ray diffractometer cold roll forming; C-channel steel; forming passes calculation; bite zone; residual stress; X ray diffractometer
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Hui, X.; Wang, X. Forming Quality Analysis on the Cold Roll Forming C-channel Steel. Materials 2018, 11, 1911.

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