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Development of Width Spread Model for High Carbon Steel Wire Rods in Flat Rolling Process

Kyunghun Lee 1, Byungmin Kim 2, and Namjin Kim 2
1. Division of Marine Engineering, Korea Maritime and Ocean University, Busan, Rep. of Korea
2. School of Mechanical Engineering, Pusan National University, Busan, Rep. of Korea

Abstract—High carbon steel wire rods rolled by flat rolling process are used to manufacture intermediate products of various shaped wires such as a saw blade, spring wire and piano wire. To achieve a desired geometry and dimensional accuracy, it is important to predict and control the width spread amount caused by the flat rolling. This study developed the width spread model for the high carbon steel wire in the flat rolling process by using the design of experiments (DOE) and FE analysis. The process variables considered in this study were the reduction of height, roll diameter, initial wire diameter and friction coefficient. The obtained FE analysis results were fitted to a second-order polynomial equation using multiple regression analysis. The spread formula was derived by solving the second-order polynomial equation. Finally, the width spread amount predicted using the proposed spread formula was compared with experiment results. The proposed width spread model led to a good agreement with the experimental results. Therefore, the proposed model can provide a valuable guideline for the prediction of wire width spread in the actual high carbon steel wire production.

Index Terms—width spread model, flat rolling process, high carbon steel wire, DOE, FE analysis

Cite: Kyunghun Lee, Byungmin Kim, and Namjin Kim, "Development of Width Spread Model for High Carbon Steel Wire Rods in Flat Rolling Process," International Journal of Mechanical Engineering and Robotics Research, Vol. 7, No. 4, pp. 343-347, July 2018. DOI: 10.18178/ijmerr.7.4.343-347