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

Hui Wu; Jingwei Zhao; Liang Luo; Shuiquan Huang; Lianzhou Wang; Suoquan Zhang; Sihai Jiao; Han Huang; Zhengyi Jiang

doi:10.3390/lubricants6030057

Lubricants (Jul 2018)

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

Hui Wu,
Jingwei Zhao,
Liang Luo,
Shuiquan Huang,
Lianzhou Wang,
Suoquan Zhang,
Sihai Jiao,
Han Huang,
Zhengyi Jiang

Affiliations

Hui Wu: School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
Jingwei Zhao: School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
Liang Luo: Automotive Research Institute, Hefei University of Technology, Hefei 230009, China
Shuiquan Huang: School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
Lianzhou Wang: School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
Suoquan Zhang: Baosteel Research Institute (R&D Centre), Baoshan Iron & Steel Co., Ltd., Shanghai 200431, China
Sihai Jiao: Baosteel Research Institute (R&D Centre), Baoshan Iron & Steel Co., Ltd., Shanghai 200431, China
Han Huang: School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
Zhengyi Jiang: School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia

DOI: https://doi.org/10.3390/lubricants6030057
Journal volume & issue: Vol. 6, no. 3
p. 57

Abstract

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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.

Published in Lubricants

ISSN: 2075-4442 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science
Website: http://www.mdpi.com/journal/lubricants

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