Hardness profile and control in thickness direction of thick wear-resistant steel

doi:10.13251/j.issn.0254-6051.2023.08.034

Abstract

Abstract: Cooling capacity of high-pressure section of quenching machine was improved by developing the cooling control program. Hardness profile in the thickness direction of thick wear-resistant steel plates were systematically studied through temperature measurement during quenching under different processes, combined with the variation of microstructure and thickness direction hardness. The results show that increasing the cooling water flow rate in the high-pressure section of the quenching machine can significantly improve the cooling speed. The martensite bainite duplex structure appears in the center of the steel plate thickness, effectively improving the hardness of the wear-resistant steel in the thickness direction.

Key words: thick wear-resistant steel, quenching, cooling rate, hardness

CLC Number:

TG142.1

Shen Binbin, Fang Jinlin. Hardness profile and control in thickness direction of thick wear-resistant steel[J]. Heat Treatment of Metals, 2023, 48(8): 205-208.

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