Development of a Method for Determining the Coefficient of Friction in Cold Sheet Rolling

IF 0.5 4区工程技术 Q4 ENGINEERING, MECHANICAL

Journal of Friction and Wear Pub Date : 2025-10-07 DOI:10.3103/S1068366625700345

V. A. Tomilo, S. V. Pilipenko, A. V. Dudan, O. P. Shtempel, T. V. Vigerina

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Abstract

An experimental method for determining the friction coefficient in metal forming processes using a universal friction machine has been developed. This method allows one to compare the lubricating ability of different emulsions in an efficient way. The experiments were carried out on a MMW-1A universal friction machine. Samples of 0.09-mm cold-rolled strips (TS-435 steel, analog 08ps) and a sample of roll material of cold rolling mill of especially thin sheets, type RCM-1250 (60X2HFА steel) were selected for research. Besides optimization of the methodology of such experiments, the character of the influence of coolant pH on the friction coefficient was determined. Friction conditions–semi-liquid friction. The expediency of using annular samples of the pair with thickness S = 4 mm and more was confirmed. It has been found that the time of carrying out the experiment should be commensurable with the duration of the investigated process of metal pressure treatment. For cold thin sheet rolling, it is most appropriate to conduct a series of 4–5-s experiments. The processing of experimental data has shown that the increase in pH values of coolant leads to an increase in the friction coefficient. The results can be useful for calculation of energy and power parameters of cold rolling of strips, for calculation of rolling routes, and optimization of applied coolants in processes of cold deformation of metals.

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冷轧过程中摩擦系数测定方法的发展

提出了一种用万能摩擦机测定金属成形过程中摩擦系数的实验方法。这种方法可以有效地比较不同乳剂的润滑能力。实验在MMW-1A型通用摩擦机上进行。选取0.09 mm冷轧带材样品（TS-435钢，模拟量08ps）和特别薄板冷轧机轧辊材料样品RCM-1250 （60X2HFА钢）进行研究。除了对实验方法进行优化外，还确定了冷却液pH对摩擦系数的影响特征。摩擦条件——半液体摩擦。验证了采用厚度S = 4 mm及以上的环形试样的便捷性。已经发现，进行实验的时间应该与所研究的金属压力处理过程的持续时间相称。对于冷轧薄板，最适宜进行一系列的4-5-s试验。对实验数据的处理表明，冷却液pH值的增大导致摩擦系数的增大。研究结果可用于带钢冷轧能量和功率参数的计算、轧制路线的计算以及金属冷变形过程中冷却剂的优化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Friction and Wear ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Journal of Friction and Wear is intended to bring together researchers and practitioners working in tribology. It provides novel information on science, practice, and technology of lubrication, wear prevention, and friction control. Papers cover tribological problems of physics, chemistry, materials science, and mechanical engineering, discussing issues from a fundamental or technological point of view.