Effect of flower pattern on the curvature of high-strength steel pipe in roll forming

Subject Areas : Analytical and Numerical Methods in Mechanical Design

M. Karimi Firouzjaei ¹ (Faculty of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran)
H. Moslemi Naeini ² (Faculty of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran)
B. Abbaszadeh ³ (Faculty of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran)
M.M. Kasaei ⁴ (Institute of Science and Innovation in Mechanical and Industrial Engineering (INEGI), University of Porto, Porto, Portugal |Department of Mechanical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran)

Received: 2022-09-21 Accepted : 2022-09-21 Published : 2022-06-01

Keywords: Finite Element Modeling, Cold roll forming process, Flower pattern design, Pipe curvature distribution, High strength steel,

Abstract :

The geometrical characteristic of products is one of the crucial quality indicators in the cold roll forming process. In this process, an appropriate flower pattern for rolls is vital to achieve the desired geometry and quality for high-strength steel pipes. In this paper, four different flower patterns, including circular, edge bending, double radius, and reverse bending are designed for the roll forming process of the high-strength steel pipe. Then, the effect of the flower pattern on the curvature distribution of the deformed strip is investigated using finite element analysis. The accuracy of the finite element model is evaluated by performing experimental tests. The results show that forming the strip with the reverse bending flower pattern leads to a more uniform curvature distribution in its cross-section, especially in the edge portion. Thus, this flower pattern design method is recommended for the roll forming process of the high-strength steel pipes.

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