冷轧铜合金乳化液润滑模型及表面质量研究（英文）

发布时间：2018-03-09 20:06

本文选题：乳化液　切入点：润滑模型　出处：《稀有金属材料与工程》2015年08期 　论文类型：期刊论文

【摘要】：根据平均流量模型和微凸体模型建立了冷轧铜合金混合润滑状态的理论模型。计算了使用不同运动粘度的乳化油,不同初始油相浓度的乳化液和在不同压下率条件下,轧制变形区的油相浓度,流动压力和接触面积。由计算结果可知,在冷轧过程中为使乳化液起到好的润滑作用和冷却效果,乳化油的运动粘度选在40~50 mm2/s之间,乳化液的初始油相浓度选在在0.02~0.05之间,道次压下率选择在30%。为进一步验证模型,利用四球摩擦磨损试验检测了乳化液的最大无卡咬负荷,确定乳化油的运动粘度和乳化液的初始油相浓度;通过观察轧后铜合金表面形貌确定轧制道次压下率,通过实验研究发现,实验结果和计算结果一致,验证了模型的准确性。乳化液润滑模型为轧制过程中乳化油运动粘度、乳化液初始油相浓度和道次压下率的选择提供了参考依据。
[Abstract]:Based on the average flow rate model and the microconvex model, a theoretical model for the mixed lubrication state of cold-rolled copper alloy was established. The emulsified oil with different kinematic viscosity, the emulsion with different initial oil phase concentration and the rate under different pressure were calculated. The oil phase concentration, flow pressure and contact area in the rolling deformation zone. From the calculation results, it can be seen that the kinematic viscosity of the emulsified oil is between 40 ~ 50 mm2/s in order to make the emulsion play a good lubricating and cooling effect during cold rolling. The initial oil phase concentration of the emulsion was chosen to be between 0.02 and 0.05, and the pass reduction rate was chosen at 30. In order to further verify the model, the maximum nibbling load of the emulsion was detected by four-ball friction wear test. The kinematic viscosity of emulsified oil and the initial oil phase concentration of emulsion were determined. The rolling pass reduction rate was determined by observing the surface morphology of copper alloy after rolling. The experimental results were consistent with the calculated results. The accuracy of the model is verified. The emulsion lubrication model provides a reference for the selection of the kinematic viscosity of the emulsified oil during rolling, the initial oil phase concentration of the emulsion and the pass reduction rate.
【作者单位】：北京科技大学;
【基金】：National Natural Science Foundation of China(51274037) Key Projects in the National Science&Technology Pillar Program(2011BAE23B00)
【分类号】：TG339;TH117

【共引文献】