Effect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings

In order to improve the microstructure and properties of hot spraying coating for bearing of high speed rolling mill,induction remelting was carried out on the Ni60A coating which was prepared on the surface of GCr15 Bearing Steel by high energy flame spraying.The porosity,microstructure and microha...

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Autores principales:	Fang XIE, Changsheng ZHAI, Songshan YAN, Rui HU, Chunxia XU
Formato:	article
Lenguaje:	ZH
Publicado:	Hebei University of Science and Technology 2021
Materias:	material surface and interface; induction remelting; bearing of high speed rolling mill; nickel based coating; microstructure Technology T
Acceso en línea:	https://doaj.org/article/0cc2161537dc4feaac5000436205108f
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spelling	oai:doaj.org-article:0cc2161537dc4feaac5000436205108f2021-11-23T07:08:58ZEffect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings1008-154210.7535/hbkd.2021yx04004https://doaj.org/article/0cc2161537dc4feaac5000436205108f2021-08-01T00:00:00Zhttp://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b202104004&flag=1&journal_https://doaj.org/toc/1008-1542In order to improve the microstructure and properties of hot spraying coating for bearing of high speed rolling mill,induction remelting was carried out on the Ni60A coating which was prepared on the surface of GCr15 Bearing Steel by high energy flame spraying.The porosity,microstructure and microhardness of the coating before and after induction remelting were analyzed comparatively by metallographic microscope,scanning electron microscope,X-ray diffractometer and microhardness tester.The effect of induction remelting on the microstructure and microhardness of the coating and interface was investigated.The results show that the porosity of nickel based coating prepared by high energy flame spraying is as high as 509%,and there are many surface pore defects,as well as there are obvious interface cracks and pore defects at the interface between the coating and the substrate,showing typical mechanical bonding and poor interface bonding properties.However,after the induction remelting,the microstructure of the coating is dense,the porosity is only 027%,the defects of the coating are obviously reduced,and the bonding interface between the coating and the substrate shows strong metallurgical fusion characteristics.Additionally,the amount of hard phase in the coating increases significantly,and the microhardness of the coating and interface is greatly improved.Therefore,the induction remelting process can not only improve the surface quality of hot spraying coating for high-speed rolling mill bearings,but also improve the interface bonding characteristics of the coating.The application of induction remelting technology can improve the coating surface structure property,and it may be used in the surface strenthening of high-speed rolling mill bearings for some point.Fang XIEChangsheng ZHAISongshan YANRui HUChunxia XUHebei University of Science and Technologyarticlematerial surface and interface; induction remelting; bearing of high speed rolling mill; nickel based coating; microstructureTechnologyTZHJournal of Hebei University of Science and Technology, Vol 42, Iss 4, Pp 345-351 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	material surface and interface; induction remelting; bearing of high speed rolling mill; nickel based coating; microstructure Technology T
spellingShingle	material surface and interface; induction remelting; bearing of high speed rolling mill; nickel based coating; microstructure Technology T Fang XIE Changsheng ZHAI Songshan YAN Rui HU Chunxia XU Effect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings
description	In order to improve the microstructure and properties of hot spraying coating for bearing of high speed rolling mill,induction remelting was carried out on the Ni60A coating which was prepared on the surface of GCr15 Bearing Steel by high energy flame spraying.The porosity,microstructure and microhardness of the coating before and after induction remelting were analyzed comparatively by metallographic microscope,scanning electron microscope,X-ray diffractometer and microhardness tester.The effect of induction remelting on the microstructure and microhardness of the coating and interface was investigated.The results show that the porosity of nickel based coating prepared by high energy flame spraying is as high as 509%,and there are many surface pore defects,as well as there are obvious interface cracks and pore defects at the interface between the coating and the substrate,showing typical mechanical bonding and poor interface bonding properties.However,after the induction remelting,the microstructure of the coating is dense,the porosity is only 027%,the defects of the coating are obviously reduced,and the bonding interface between the coating and the substrate shows strong metallurgical fusion characteristics.Additionally,the amount of hard phase in the coating increases significantly,and the microhardness of the coating and interface is greatly improved.Therefore,the induction remelting process can not only improve the surface quality of hot spraying coating for high-speed rolling mill bearings,but also improve the interface bonding characteristics of the coating.The application of induction remelting technology can improve the coating surface structure property,and it may be used in the surface strenthening of high-speed rolling mill bearings for some point.
format	article
author	Fang XIE Changsheng ZHAI Songshan YAN Rui HU Chunxia XU
author_facet	Fang XIE Changsheng ZHAI Songshan YAN Rui HU Chunxia XU
author_sort	Fang XIE
title	Effect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings
title_short	Effect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings
title_full	Effect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings
title_fullStr	Effect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings
title_full_unstemmed	Effect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings
title_sort	effect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings
publisher	Hebei University of Science and Technology
publishDate	2021
url	https://doaj.org/article/0cc2161537dc4feaac5000436205108f
work_keys_str_mv	AT fangxie effectofinductionremeltingonmicrostructureandpropertiesofhotsprayingcoatingforhighspeedrollingmillbearings AT changshengzhai effectofinductionremeltingonmicrostructureandpropertiesofhotsprayingcoatingforhighspeedrollingmillbearings AT songshanyan effectofinductionremeltingonmicrostructureandpropertiesofhotsprayingcoatingforhighspeedrollingmillbearings AT ruihu effectofinductionremeltingonmicrostructureandpropertiesofhotsprayingcoatingforhighspeedrollingmillbearings AT chunxiaxu effectofinductionremeltingonmicrostructureandpropertiesofhotsprayingcoatingforhighspeedrollingmillbearings
_version_	1718416806305071104

Effect of induction remelting on microstructure and properties of hot spraying coating for high speed rolling mill bearings

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