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http://dx.doi.org/10.3795/KSME-A.2014.38.1.065

Preform design of large sized profile ring rolling using main roll  

Kim, H.J. (PSM Inc.)
Kang, J.H. (Jac coupling)
Kang, S.S. (Mechanical Engineering, Busan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.1, 2014 , pp. 65-70 More about this Journal
Abstract
This paper introduces a preform design method for a ring rolling process with an outer step. Underfilling is one of the general defects of the profile ring rolling process. It occurs when the deformation amount is small or step depth of the profiled region is large. To prevent underfilling, increasing the deformation amount or using a preform of size similar to that of the final product are required. Furthermore, the filling limit equation is suggested based on the shape factor and deformation ratio for preventing defects in the products. The filling limit equation has been derived through finite element analyses and production tests for four different cases. For verifying the suggested method, realsized profile rolling tests were performed, and test results were compared with the predictions of the equation.
Keywords
Profile Ring Rolling; Finite Element Analysis; Preform Design; Filling Limit Equation;
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