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在超声波作用下,将经油酸表面修饰平均粒径为20 nm的纳米Fe3O4微粒分散于板带钢冷轧轧制液中,在MRS-10A四球摩擦磨损试验机上考察了其对钢/钢摩擦副摩擦磨损性能的影响;利用X射线衍射仪和透射电镜分析了纳米Fe3O4的相组成和微结构,采用光学显微镜观察了磨损表面形貌.利用四辊冷轧试验机进行了轧制液润滑下的板带钢冷轧试验,考察了纳米Fe3O4添加剂对板带钢冷轧润滑的效果.结果表明:纳米Fe3O4作为轧制液添加剂能有效提高钢/钢摩擦副的抗磨性能、降低摩擦系数,同时表现出良好的板带钢冷轧润滑效果;含纳米Fe3O4的轧制液可明显降低带钢最小可轧厚度,并改善轧制带钢板面质量.
Under the action of ultrasonic wave, nano-sized Fe3O4 particles modified by oleic acid surface-modified with an average particle size of 20 nm were dispersed in the cold rolling fluid of strip steel. The effects of friction between steel and steel on MRS-10A four-ball friction and wear tester were investigated. The friction and wear properties were studied.The phase composition and microstructure of Fe3O4 nano-Fe3O4 were analyzed by X-ray diffraction and transmission electron microscopy.The morphology of the wear surface was observed by optical microscope.Using a four-roll cold rolling mill, , The effects of nano-Fe3O4 additive on the cold rolling lubrication of strip steel were investigated.The results showed that the nano-Fe3O4 as an additive to the rolling liquid can effectively improve the anti-wear performance of the steel / steel friction pair and reduce the friction coefficient, At the same time, it shows a good strip cold rolling lubrication effect; the rolling solution containing nano-Fe3O4 can obviously reduce the minimum rolling thickness of the strip and improve the quality of rolled strip surface.