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随着我国工业技术的不断发展,要求冶金工厂提供高精度的难变形簿带钢,如变压器硅钢和镍铬不锈钢等。这类带钢厚0.025～0.25毫米,宽200～1200毫米,用普通的四辊轧机已不能生产,用多辊式冷轧机,如甘辊式森吉米尔轧机生产,则嫌该机机构复杂,维护和操作十分不易,而且生产费用较高。现在用MKW八辊轧机生产这类产品,实践证明是成功的,其主要原因是八辊轧机远较多辊式冷轧机设备简单,操作和维护比较方便; 采用侧支撑辊以消除工作辊有害的水平弯曲;在辊系布置中采用工作辊对支撑辊的偏心距e,使工作辊运转有良好的稳定性;由于传动支撑辊的采用小直径的工作辊,轧辊强度和轧机刚性较好,轧制压力及变形功小,而可轧厚变降低;随着生产品种的改变,一机多用,可改为四辊和双八辊轧机。所以八辊轧机是四辊和多辊轧机所生产品种之间的比较合理的“中间轧机”。
With the continuous development of our country’s industrial technology, metallurgical plants are required to provide high-precision hard-to-shape strips, such as transformer silicon steel and nickel-chromium stainless steel. Such strip thickness 0.025 ~ 0.25 mm, width 200 ~ 1200 mm, with the ordinary four-roll mill has been unable to produce, with a multi-roll cold rolling mill, such as Gan roller mill Sendzimir mill production, Maintenance and operation is not easy, and the higher production costs. Now, the production of these products by MKW eight-roller mill has proved successful. The main reason is that the eight-roller mill is much simpler in equipment and easier in operation and maintenance. The use of side support rollers to eliminate the harmfulness of work rolls Of the horizontal bending; the use of the roller system in the work roll on the support roller eccentricity e, so that the work roll operation with good stability; due to the drive support roll with small diameter work roll, roll strength and mill rigidity better, Rolling pressure and deformation work is small, but the thickness can be rolled lower; with the variety of production changes, a multi-purpose machine can be changed to four-roll and double eight-roll mill. Therefore, the eight-roll mill is a more reasonable “intermediate mill” between the products produced by the four-roll and multi-roll mills.