Effect of Coating Removal by Induction Heating on the Microstructure and Properties of Deck Steel

Abstract:

Deck steel with anti-skid coating is treated by induction heating for coating removal. The microstructure of cross-section before and after coating removal is observed by metallographic microscope and scanning electron microscope. Z-direction micro-hardness of cross-section before and after coating removal is tested by micro-hardness tester. Results show that the softening layer of about 3 mm, which the average micro-hardness of the layer is 244 HV, is formed on the surface of the sample. The micro-hardness decreases by 3.5% compared with the untreated sample. Coating removal by induction heating will not have an impact on the metallographic structure. But carbide particles will be precipitated at the grain boundary. At last, the influence of induction heating on the performance of deck steel is briefly analyzed.

• Periodical: Key Engineering Materials (Volume 723)
• Pages: 517-521
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.723.517
• Online since: December 2016
• Authors: Jia Hui Cai*, Xiao Feng Sun, Ji Qiu
• Keywords: Induction Heating, Micro-Hardness, Microstructure

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