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Development of a Method for the Evaluation of the Gap in the Course of Straightening of Sheet Products on Roller Leveling Machines
Metallurgist ( IF 0.8 ) Pub Date : 2021-05-11 , DOI: 10.1007/s11015-021-01133-w
E. A. Maksimov , R. L. Shatalov , E. P. Ustinovsky

It is shown that there are two basic types of design of roller leveling machines (RLM) according to the principle of adjustment of the gap between the rollers, namely, with parallel and inclined arrangement of the rollers. We present the dependences for the numerical analyses of the curvature of reverse bend and the adjustment gap for the RLM both with horizontal and inclined positions of the rollers. It is demonstrated that, in the case of straightening performed in an RLM with horizontal arrangement of the rollers, the gap decreases from 38.8 to 7.8 mm as the thickness of the sheet made of 10KhSND steel decreases from 40 to 12 mm. For the sheet made of 10G2S1D steel, it decreases from 38.6 to 7.2 mm and for the sheet made of 14Kh2GMR steel from 38.6 to 6.2 mm. In the case of straightening carried out in an RLM with inclined arrangement of the rollers for a sheet made of 10KhSND steel with a thickness of 20 mm, the minimal gap constitutes Cmin = 19.6 mm, while the maximal gap Cmax = 20.0 mm. Moreover, for 10G2S1D steel, we get Cmin = 19.5 mm and Cmax = 20.0 mm. Finally, for 12G2MFT steel, we find Cmin = 19.3 mm and Cmax = 19.9 mm. We performed the experimental straightening of sheets of 10 steel 16 mm in thickness and 2400 mm in width on a seven-roller RLM (produced by Severstal’). The comparison of the experimental value of gap Cexp = 13.1 with its theoretical value Ccalc = 12.8 mm shows that difference between these values is equal to 4.5%.



中文翻译:

辊矫直机上板材矫直过程中间隙评估方法的开发

示出了根据调节辊之间的间隙的原理,辊平整机(RLM)的设计有两种基本类型,即,辊的平行和倾斜布置。我们介绍了在辊的水平和倾斜位置下反向弯曲的曲率和RLM的调节间隙的数值分析的相关性。已经证明,在水平布置辊的RLM中进行矫直的情况下,随着由10KhSND钢制成的板材的厚度从40毫米减小到12毫米,间隙从38.8减小到7.8毫米。对于10G2S1D钢制成的薄板,它从38.6毫米减小到7.2毫米;对于14Kh2GMR钢制成的薄板,它从38.6毫米减小到6.2毫米。C min = 19.6 mm,而最大间隙C max = 20.0 mm。此外,对于10G2S1D钢,我们得到C min = 19.5 mm和C max = 20.0 mm。最后,对于12G2MFT钢,我们发现C min = 19.3 mm,C max = 19.9 mm。我们在7辊RLM(由Severstal公司生产)上对厚度为16 mm,宽度为2400 mm的10钢板进行了实验矫直。间隙C exp = 13.1的实验值与其理论值C calc = 12.8 mm的比较表明,这些值之间的差等于4.5%。

更新日期:2021-05-11
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