Performance Evaluation and Lubrication Mechanism of Water-Based Nanolubricants Containing Nano-TiO2 in Hot Steel Rolling

Authors

Hui Wu, University of WollongongFollow
Jingwei Zhao, University of WollongongFollow
Liang Luo, University of WollongongFollow
Shuiquan Huang, University of Queensland
Lianzhou Wang, University of QueenslandFollow
Suoquan Zhang, Baosteel
Sihai Jiao, BaosteelFollow
Han Huang, University of QueenslandFollow
Zhengyi Jiang, University of WollongongFollow

RIS ID

128806

Publication Details

Wu, H., Zhao, J., Luo, L., Huang, S., Wang, L., Zhang, S., Jiao, S., Huang, H. & Jiang, Z. (2018). Performance Evaluation and Lubrication Mechanism of Water-Based Nanolubricants Containing Nano-TiO2 in Hot Steel Rolling. Lubricants, 6 (3), 57-1-57-15.

Abstract

Hot rolling tests of a low-alloy steel were conducted at a rolling temperature of 850 °C under different lubrication conditions, including benchmarks (dry condition and water) and water-based nanolubricants containing different concentrations of nano-TiO₂ from 1.0 to 8.0 wt%. The effects of nanolubricants on rolling force, surface roughness, thickness of oxide scale, and microstructure were systematically investigated through varying nano-TiO₂ concentrations. The results show that the application of nanolubricants can decrease the rolling force, surface roughness and oxide scale thickness of rolled steels, and refine ferrite grains. In particular, the nanolubricant containing an optimal concentration (4.0 wt%) of nano-TiO₂ demonstrates the best lubrication performance, owing to the synergistic effect of lubricating film, rolling, polishing, and mending generated by nano-TiO₂.