Roll Forming Process

The paper presents the features of products manufactured by roll forming , its applications in automotive industries home and oversea and some new techniques of cold roll forming , such as Central Tool Adjustment method and Flexible Cold Forming Mill, and the brief account of cold pressing steel development.The cold roll-forming technology of every kind of cold forming steel is studied in this paper .It determines the length of becoming deform region ,critical bending angle and the metal pressure distributing of rolling form process. The condition is considered to determine the critical bending angle and different factors that influence critical bending radius are obtained by means of qualitative analysis .Takeing a equilateral channel steel of automobile for example,this paper analyzes the technology of its ,uses single discontinuous mode of production and fixed-point method of conversion radius to calculate the sizes of transitional cross sections.The second opposite bending principle is utilized to design every pass that is used to process channel steel.