Development of Model for Formation of Surface Properties in Cold Rolling of Stainless Steels and Application to the Actual Mill
Development of Model for Formation of Surface Properties in Cold Rolling of Stainless Steels and Application to the Actual Mill
复制标题
不锈钢冷轧表面性能形成模型的开发及其在实际轧机中的应用
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Kazuhiro Yanai
中科院分区：
文献类型：
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作者：
F. Fudanoki;J. Araki;S. Inoue;Kazuhiro Yanai
应用通道顶进机理，建立了不锈钢冷轧表面缺陷减少、表面平整的“轧制油渗出模型”。当在与纯油相同的条件下轧制时，用这次使用的乳化油轧制的板的表面不容易平滑，因为该乳化油在高压下变成高粘度，并且在辊字节中在高压下不容易移动。但根据轧制油渗透模型控制轧制条件，乳化油轧制的板料表面光洁度与纯油轧制的板料表面光洁度相同。7-11）提出了他们所谓的通道顶进机制（CJM）作为他们的“微池润滑模型”，其通过润滑剂在材料和工具之间的摩擦界面处进行润滑，所述润滑剂被机械地捕获在材料表面中的非常小的凹痕（微坑）中。当润滑剂不是通过基于流体动力学的效应而是通过被机械地捕获在材料表面中的微坑中的润滑剂的效应被供应到材料与工具之间的摩擦界面时，该模型适用。本研究参照上述CJM模型，考虑了冷轧前钢材表面微坑中机械捕获的轧制油的渗出行为。然后，我们提出，应以该模型为参考，根据所用轧制油的粘度、轧制条件和轧辊表面粗糙度计算出的道次特征值（以下简称F值），来评价每道次的渗漏行为。研究了用F值制定的轧制规程与轧后表面性能变化之间的关系。本文介绍了研究结果。此外，我们在使用水溶性乳化油（下文称为乳化油）的冷轧工艺中应用F值来使钢表面光滑，从获得所需钢表面性质的观点来看，水溶性乳化油通常被认为是低于纯油的。本文还描述了结果。
The model "the rolling oil transudation model" by whom the decrease of the sur- face defect and smoothing the surface of the stainless steel cold-rolling was formed were constructed by applying Channel Jacking Mechanism. The surface of the sheet rolled with emulsion oil used this time is not smoothed easily when rolling on the same to neat oil condition, because this emulsion oil becomes a high viscosity under the high pressure, and is not moved easily under high-pressure in the roll byte. How- ever the surface smoothness of the sheet rolled with emulsion oil is the same as one with neat oil with control of the rolling condition based on the rolling oil transuda- tion model. 7-11) proposed what they call the Channel Jacking Mechanism (CJM) as their "micro- pool lubrication model" of the lubrication at the interface of friction between the material and the tool by the lubricant that is mechani- cally trapped in very small dents (micro-pits) in the material surface. This model applies when the lubricant is supplied to the interface of friction between the material and the tool not by the hydrodynamic- based effect but by the effect of the lubricant that is mechanically trapped in micro-pits in the material surface. In the present study, referring to the above CJM model, we con- sidered the transudation behavior of rolling oil which is trapped mechanically in micro-pits in the surface of steel material before cold rolling. Then, we proposed that the transudation behavior in each rolling pass should be evaluated based on the pass characteris- tic value (hereinafter called the F-value) that is calculated from the viscosity of the rolling oil used, rolling conditions and roll surface roughness using said model as a reference. We studied the relation- ship between the pass schedule using the F-value and the change in surface properties after rolling. The study results are described in this paper. In addition, we applied the F-value to smooth the steel surface in the cold rolling process using water-soluble emulsion oil (hereinafter called emulsion oil) which is generally considered infe- rior to neat oil from the standpoint of obtaining the desired steel surface properties. The results are also described in this paper.