Method for Determination of the Friction Coefficient during Cold Rolling of Extra Thin Sheets

IF 0.5 4区 工程技术 Q4 ENGINEERING, MECHANICAL Journal of Friction and Wear Pub Date : 2024-11-08 DOI:10.3103/S1068366624700223
V. A. Tomilo, S. V. Pilipenko, A. V. Dudan, O. P. Shtempel, T. V. Vigerina
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Abstract

The method is aimed at comparing the lubricating capacity of different emulsions. The purpose of the work is to evaluate the possibility of using a universal friction machine, type MMW-1A, to determine the value of the friction coefficient in the cold rolling of very thin strips of carbon steel. The article analyzes the research related to the methods of measuring the friction coefficient in lengthwise rolling. The methodology of experiment determination of friction coefficient value between the material of RCM-1250 reversing mill rolls (steel of working rolls—analog of 60S2HFA steel) and the sample of annealed strip, 0.224-mm thick, made of TS-435 steel grade (analog of 08ps steel, GOST 1050) has been developed. The selected friction conditions are semi-fluid friction. The experiment applied the emulsion, based on the lubricating-cooling liquid, such as Quaker 2185, and used an RCM-125 reversing mill. Two types of ring-shaped samples made of roll material were used in the experiment with wall thicknesses of S = 4 mm and S = 2 mm. The results of the experiments showed that the use of the ring-shaped sample with S = 4 mm is more reasonable from the point of view of stability of the created friction conditions. The recommended average value of friction coefficient between the above materials of rolls and strip was determined: fcf = 0.038. In the course of the experiment the values of the friction coefficient fluctuated within the boundaries, from the minimum of fmin = 0.012, to the maximum of fmax = 0.048. In general, these experimental results are correlated with reference data on the value of the friction coefficient for this type of rolling and the results of other experiments described in the literature, conducted under similar friction conditions. Proceeding from this, it is possible to draw a conclusion that estimation of the lubricating capacity of various lubricating-cooling liquids, application of universal friction machines of the design described in the article is expedient.

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超薄板材冷轧过程中摩擦系数的测定方法
该方法旨在比较不同乳化液的润滑能力。这项工作的目的是评估使用 MMW-1A 型通用摩擦机确定极细碳钢带冷轧过程中摩擦系数值的可能性。文章分析了与纵向轧制摩擦系数测量方法有关的研究。已开发出 RCM-1250 反转轧辊材料(工作辊钢--类似于 60S2HFA 钢)与厚度为 0.224 毫米、由 TS-435 钢级(类似于 08ps 钢,GOST 1050)制成的退火带样品之间摩擦系数值的实验测定方法。所选摩擦条件为半流体摩擦。实验使用了基于润滑冷却液的乳化液,如 Quaker 2185,并使用了 RCM-125 反向碾磨机。实验中使用了两种由轧辊材料制成的环形样品,壁厚分别为 S = 4 毫米和 S = 2 毫米。实验结果表明,从所创造的摩擦条件的稳定性角度来看,使用 S = 4 毫米的环形样品更为合理。上述材料的轧辊和带材之间的摩擦系数的推荐平均值为:fcf = 0.038。在实验过程中,摩擦系数值在一定范围内波动,从最小值 fmin = 0.012 到最大值 fmax = 0.048。总的来说,这些实验结果与这种轧制方式的摩擦系数参考数据以及文献中描述的在类似摩擦条件下进行的其他实验结果是相关的。由此可以得出结论:估算各种润滑-冷却液体的润滑能力,应用文章中所述设计的通用摩擦设备是合适的。
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来源期刊
Journal of Friction and Wear
Journal of Friction and Wear ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
1.50
自引率
28.60%
发文量
21
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.
期刊最新文献
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