连铸烧成铝锆碳质滑板磨削用Fe-Cu-Sn-Ni基结合剂金刚石工具的性能

doi:10.11896/cldb.20030149

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Abstract Sintered corundum-zirconia-graphite slide gate is used to control the flow of molten steel in the steel-making continuous casting process. The research on diamond grinding tools for sintered slide gate is particularly important, due to the sliding surface which must be ground to prevent the risk of steel leakage caused by uneven surface of sliding, but there are few studies reported. In this paper, Fe-Cu-Sn-Ni based matrix, the diamond segment and diamond grinding tools were prepared by hot pressing sintering, and the effects of Ni mass fraction on their properties were investigated. Moreover, the fracture micro-morphology of the matrix and wear surface of diamond grinding tools were both analyzed by SEM. Meanwhile, the phases of the matrix were analyzed by XRD. The results show that, as the Ni mass fraction increased, the hardness, the bending strength, the number of dimples of the matrix, as well as the content of γ(Fe, Ni) solid solution continuously increased. Besides, the fracture mode of the matrix was improved. The bending strength and the holding force coefficient of the diamond segment increased first and then decreased. They reached the maximum when the Ni mass fraction was 12%. Furthermore, the protrusion height of the diamond in diamond grinding tools increased, and the grinding ratio of diamond grinding tools increased first and then decreased. When the Ni mass fraction was 12%, the grinding ratio reached the maximum of 200.8.

Key words： Fe-based matrix diamond grinding tools sintered slide gate grinding performance

Published: 03 August 2021

CLC number:

TG74

About author:: Yunxian Wei studied at Xi'an University of Architecture and Technology in September 2017. Now he is studying for a master's degree. And he is focusing on the research of superhard materials.
Feng Duan received his Ph.D. degree in December 2014 from Xi'an University of Architecture and Technology, is currently an associate professor in School of Materials Science and Engineering, Xi'an University of Architecture and Technology. He is mainly engaged in teaching, scientific research and administrative management of inorganic non-metal materials. His research interests are preparation and synthesis of high-temperature structural materials, ceramics, refractories and superhard materials, comprehensive utilization of solid waste.

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	WEI Yunxian
	DUAN Feng
	YIN Yuhang
	PENG Kai
	HU Danming
	DING Donghai

Cite this article:

WEI Yunxian,DUAN Feng,YIN Yuhang, et al. Properties of Diamond Tools with Fe-Cu-Sn-Ni Matrix for Grinding Sintered Corundum-Zirconia-Graphite Slide Gate[J]. Materials Reports, 2021, 35(14): 14166-14170.

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http://www.mater-rep.com/EN/10.11896/cldb.20030149 OR http://www.mater-rep.com/EN/Y2021/V35/I14/14166

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