Analysis of TiO2 nano-additive water-based lubricants in hot rolling of microalloyed steel

作者：Wu Hui^*; Zhao Jingwei^*; Xia Wenzhen; Cheng Xiawei; He Anshun; Yun Jung Ho; Wang Lianzhou; Huang Han; Jiao Sihai; Huang Li; Zhang Suoquan; Jiang Zhengyi^*

来源：Journal of Manufacturing Processes, 2017, 27: 26-36.

DOI：10.1016/j.jmapro.2017.03.011

• Microalloyed steel
• Hot rolling
• TiO2 nano-additive
• Water-based lubricant

Hot rolling tests of microalloyed steel were performed at rolling temperatures of 1050, 950, and 850 degrees C under different lubrication conditions, including dry, water lubrication, and 1.0 vol.% oil-in-water (O/W) emulsion. The rolling force, surface roughness, and thickness of the oxide scale of the rolled steel were investigated in order to evaluate the lubrication effects of TiO2 nano-additive water-based lubricants. The results show that the rolling force under a rolling temperature of 1050 degrees C does not vary significantly under all the lubrication conditions. The 4.0 wt.%TiO2 water-based lubricant, however, leads to the lowest rolling force at rolling temperatures of 950 and 850 degrees C. The application of 4.0 wt.% TiO2 water-based lubricant in hot rolling not only produces the best surface finish, but also results in the thinnest oxide scale of the rolled steels. The lubrication mechanisms of TiO2 nano-additive water-based lubricants in hot rolling were also discussed.

• 出版日期2017-6