Transactions of Materials and Heat Treatment

Title：Calculation method of heat transfer and deformation in cold rolling for fine stamping strip steel

Authors： Zheng Jiuhua Chang Xin Hou Jialin Ma Zhenglun Fan Dianming

Unit： Shandong Agriculture University Tai′an Hualu Metalforming Machine Tool Co. Ltd.

KeyWords： cold rolling roller strip steel thermal deformation finite element method

ClassificationCode：TG335

year,vol(issue):pagenumber：2018,43(4):163-168

Abstract：

For the effects of roller and strip heating on the deformation in the cold rolling of fine stamping strip steel, the cold rolling process characteristics of fine stamping strip steel were analyzed, and the grid model of roller and strip steel was built based on the preceding tested data of temperature distribution on the roller surface. Then, an integrated calculation method including structural heat transfer, thermal expansion of elastic segment and elastic-plastic dynamic deformation in the cold rolling process was proposed, and the structural stress and deformation distributions at self-heating temperature of roller and strip steel were obtained. The single-pass cold rolling example of 304 stainless steel strip in the harden state shows that the areas with larger structural stress coincide with the areas with greater temperature gratitude, and the central area at the cross section of strip steel has a large convex deformation and its two ends have burrs. From the above results, it validates the feasibility of the integrated calculation method, which provides a methodological basis for the digital design of actual cold rolling process.

Funds：

国家国际科技合作专项资助（2015DFR70090）

郑九华（1972-），男，博士，副教授；E-mail：zjh1882@163.com

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