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通过建立汽化燃烧区对热轧变形区进行分析计算,发现无论在热轧变形区入口处的汽化燃烧区,还是在变形区,油水混合液都没有足够的时间达到燃点,仍以液体形式存在.采用四球摩擦试验机进行了油膜强度和摩擦因数测定并进行长磨试验.磨斑表面观察表明:当轧制油在水中的质量浓度大于2 g.L-1时,润滑状态为边界润滑,该状态下的润滑作用效果取决于油膜强度,并非轧制油的质量浓度.采用2 g.L-1质量浓度进行轧制润滑生产试验,验证了上述研究结果.润滑有效地降低了轧制压力,同时对冷却水污染最小,取得了很好的润滑效果.对于不同的轧制产品与工艺而言,建议轧制油使用的质量浓度应小于10 g.L-1,否则轧制油残留可能引起冷却水污染.
Through the establishment of vaporized combustion zone analysis and calculation of hot deformation zone, found that no matter in the hot deformation zone at the entrance of the combustion zone, or in the deformation zone, the oil-water mixture does not have enough time to reach the ignition point, still in liquid form. Four-ball friction tester was used to measure the film strength and friction coefficient and the long-wear test was carried out.The surface observation of the wear scar showed that when the mass concentration of the rolling oil in water is more than 2 gL-1, the lubrication state is the boundary lubrication. Of the lubricating effect depends on the film strength, not the mass concentration of the rolling oil.The use of 2 gL-1 mass concentration of rolling lubrication production test to verify the above results.Low lubrication effectively reduces the rolling pressure, while the cooling water The least pollution and good lubrication effect.For different rolled products and processes, the recommended concentration of the rolling oil should be less than 10 gL-1, otherwise the residual oil may cause cooling water pollution.