For a shape rolling process of products with a high aspect ratio, its width does not spread sufficiently, frequently resulting in the unfilling phenomenon in the width direction. This paper proposes a roll profile design for the shape rolling process; this design method improves the dimensional accuracy of a shape wire with a high aspect ratio. From among the products produced by the shape rolling process in industrial sites, those with aspect ratios of ≥ 3.3 were selected in this study, and finite element (FE) simulation of the shape rolling process was conducted to verify the effectiveness of proposed method. The results of the FE simulation showed that the proposed design method was effective in performing the rolling process for shapes with high aspect ratios. In addition, the effectiveness of the proposed method was verified by conducting an experiment for bridge-valve wire by using plasticine. The experimental results showed that target shapes were obtained with an unfilling rate as low as 0.23 % for the cross-sectional area.

对于长径比高的产品的形状轧制工艺，其宽度不能充分扩展，经常导致在宽度方向上的未填充现象。本文提出了一种用于形状轧制过程的轧辊轮廓设计。这种设计方法提高了高纵横比的形状线材的尺寸精度。从工业现场的轧制过程中选择的产品中，选择长径比≥3.3的产品，并进行了轧制过程的有限元（FE）模拟，以验证所提出方法的有效性。有限元模拟的结果表明，所提出的设计方法对于进行高深宽比形状的轧制是有效的。此外，通过使用橡皮泥对桥阀线进行实验，验证了该方法的有效性。实验结果表明，获得的目标形状的横截面积的未填充率低至0.23％。