The effects of forming parameters on the cold roll forming of channel section

Cold roll forming is one of the complex forming processes which quality of products is highly dependent on the process parameters. In this study the effect of some roll forming parameters of channel section are investigated on the edge longitudinal strain and bow defect of products. These parameters are bending angle increment, strip thickness, flange width of section, web width of section, friction in the roll and strip contact, speed of roll, and distance between the roll stands. It is important to consider these parameters for roll forming process design. Longitudinal bow is one of the main defects in the cold roll forming products which is affected by the bending angle increment. Experimental and numerical results of this study show that bow defect increase with the bending angle increasing. Results of present study show that peak of longitudinal strain in the edge of channel section increases with the bending angle increment and strip thickness increase, but decreases with the flange width, web width and distance between the roll stands increasing. Results show that friction in the roll-strip contact and speed of roll stand does not have any effect on the edge longitudinal strain.

[1]  Hervé Degée,et al.  Numerical simulation of the roll forming of thin-walled sections and evaluation of corner strength enhancement , 2013 .

[2]  S M Panton,et al.  Geometric Constraints on the Forming Path in Roll Forming Channel Sections , 1992 .

[3]  Pierre Gilormini,et al.  A simplified method for the simulation of cold-roll forming , 1993 .

[4]  A. H. van den Boogaard,et al.  Product defect compensation by robust optimization of a cold roll forming process , 2013 .

[5]  H. Moslemi Naeini,et al.  Localised edge buckling in cold roll-forming of symmetric channel section , 2006 .

[6]  S. M. Panton,et al.  Longitudinal and shear strain development in cold roll forming , 1996 .

[7]  Naksoo Kim,et al.  A parametric study on forming length in roll forming , 2001 .

[8]  James Fewtrell.  An experimental analysis of operating conditions in cold roll-forming , 1990 .

[9]  Wei-Ping Lu,et al.  The effects of forming parameters in the roll-forming of a channel section with an outer edge , 2001 .

[10]  Michael Lindgren,et al.  Cold roll forming of a U-channel made of high strength steel , 2007 .

[11]  M. Poursina,et al.  Application of BPANN and regression for prediction of bowing defect in roll-forming of symmetric channel section , 2008 .

[12]  Mustafa A. Ahmetoglu,et al.  Computer aided simulation of cold roll forming — a computer program for simple section profiles , 1996 .

[13]  Xinmin Lai,et al.  Optimization design of roll profiles for cold roll forming based on response surface method , 2009 .

[14]  P. D. Smith,et al.  The prediction of deformation length in cold roll-forming , 1984 .

[15]  Jean-Philippe Ponthot,et al.  Numerical simulation of cold roll-forming processes , 2008 .