Study on Ware Resistance of Laser Hardening Rolling Mill Liner

Abstract:

In order to change the traditional status that rolling mill liner can not be manufactured with a single material, laser transformation hardening was carried out by HL-1500 cross-flow CO2 laser processing machine on 45 steel surface. developed a non-composite liner instead of the original. The microstructure and properties were researched by means of scanning electron microscopy, X-ray diffractometer, microhardness tester and abrasive wear testing machine. The result indicate that, the microstructure of laser transformation hardening layer fine and homogeneous, mainly composed of Fe, Fe3C, Fe-Cr and Cr3C2, the hardness and the relative wear resistance are about 3 times and 2.7 times as that of the substrate respectively; which can reached the technical requirements liner needed.

• Periodical: Applied Mechanics and Materials (Volumes 121-126)
• Pages: 3551-3554
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.121-126.3551
• Online since: October 2011
• Authors: Xing Wu Qiu, Yun Peng Zhang, Chun Ge Liu
• Keywords: Laser Hardening, Microhardness, Microstructure, Rolling Mill Liner, Ware Resistance

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