稳态导热下连铸保护渣固态渣膜有效导热系数的研究

doi:10.13228/j.boyuan.issn1005-4006.20180025

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Abstract It has been reported that two methods could be used to measure the thermal conductivity of mold flux， including the instantaneous hot-wire method and the laser pulse method. However， during continuous casting process， the heat transfer between the shell and the mold involves conduction and radiation. Therefore， the thermal conductivity could not be used to evaluate the total heat flux in the mold. Thus， it is necessary to use the effective thermal conductivity to calculate the total heat flux through the slag film. In this paper， the effective thermal conductivity of the solid slag film was investigated through heat flux simulator and laser confocal microscope. The results show that， with the increase of the basicity from 1.1 to1.4， the crystallization capability of mold flux increases， which leads to the increase of the surface roughness of the solid slag film. Meanwhile， the effective thermal conductivity of the flux increases from 1.20W/（m·K） to 2.46W/（m·K）.

Key words： continuous casting mold flux heat flux simulator effective thermal conductivity

Received: 05 March 2018 Published: 29 June 2018

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	Articles by authors
	ZHU Xian-Fei
	WEN Guang-Hua
	PU Tai-Zhi
	TANG Ping
	FU Ta-Tiao

Cite this article:

ZHU Xian-Fei,WEN Guang-Hua,PU Tai-Zhi等. Study on effective thermal conductivity of solid slag film for mold flux under steady state heat conduction[J]. , 2018, 37(03): 25-30.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20180025 OR http://www.chinamet.cn/Jweb_lz/EN/Y2018/V37/I03/25

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