Self-Grinding Silage Knife Strengthened with Ni–WC Alloy Prepared by Laser Cladding

The working environment of agricultural cutting tools is poor, and the operational quality and efficiency are reduced after they become blunt. This study aimed to develop a high wear-resistant agriculture knife with a long life. A Ni–WC alloy, wear-resistant layer was prepared using laser cladding t...

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Autores principales:	Lingfeng Xu, Zhanhua Song, Mingxiang Li, Fade Li, Jing Guo, Ming Gao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	laser cladding Ni-based WC alloy powder self-grinding silage knife microstructure impact toughness wear resistance Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/e221d467f4794b46932ce112c4fb7202
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spelling	oai:doaj.org-article:e221d467f4794b46932ce112c4fb72022021-11-11T15:16:50ZSelf-Grinding Silage Knife Strengthened with Ni–WC Alloy Prepared by Laser Cladding10.3390/app1121102362076-3417https://doaj.org/article/e221d467f4794b46932ce112c4fb72022021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10236https://doaj.org/toc/2076-3417The working environment of agricultural cutting tools is poor, and the operational quality and efficiency are reduced after they become blunt. This study aimed to develop a high wear-resistant agriculture knife with a long life. A Ni–WC alloy, wear-resistant layer was prepared using laser cladding technology on one side of the cutting edge of a 65 Mn silage knife. A self-grinding edge was formed when the cladded knife was used, which improved the cutting quality and service life of the knife. The microstructure, phase, composition, and hardness distribution of the cladding layer were detected and analyzed. The impact toughness and wear resistance of the laser-cladded samples were analyzed, and the cladded knife was tested in the field. The results show that a cladded layer with a dense microstructure formed metallurgical bonds with the substrate. The microhardness was uniform across the cladded layer, and the average hardness of the micro Vickers was approximately 1000 HV(0.2), which was approximately three times the hardness of the substrate. The impact toughness and wear resistance of the coated knife were obviously higher than those of uncoated knives. The field tests showed that compared with a conventional 65 Mn knife, the self-grinding knife with laser cladding could maintain its sharp cutting shape after operation for 76 h, which greatly extended the service life of the knife. This study improved the service life of an agricultural cutting tool, which enhanced the cutting performance and efficiency at the same time.Lingfeng XuZhanhua SongMingxiang LiFade LiJing GuoMing GaoMDPI AGarticlelaser claddingNi-based WC alloy powderself-grinding silage knifemicrostructureimpact toughnesswear resistanceTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10236, p 10236 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	laser cladding Ni-based WC alloy powder self-grinding silage knife microstructure impact toughness wear resistance Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	laser cladding Ni-based WC alloy powder self-grinding silage knife microstructure impact toughness wear resistance Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Lingfeng Xu Zhanhua Song Mingxiang Li Fade Li Jing Guo Ming Gao Self-Grinding Silage Knife Strengthened with Ni–WC Alloy Prepared by Laser Cladding
description	The working environment of agricultural cutting tools is poor, and the operational quality and efficiency are reduced after they become blunt. This study aimed to develop a high wear-resistant agriculture knife with a long life. A Ni–WC alloy, wear-resistant layer was prepared using laser cladding technology on one side of the cutting edge of a 65 Mn silage knife. A self-grinding edge was formed when the cladded knife was used, which improved the cutting quality and service life of the knife. The microstructure, phase, composition, and hardness distribution of the cladding layer were detected and analyzed. The impact toughness and wear resistance of the laser-cladded samples were analyzed, and the cladded knife was tested in the field. The results show that a cladded layer with a dense microstructure formed metallurgical bonds with the substrate. The microhardness was uniform across the cladded layer, and the average hardness of the micro Vickers was approximately 1000 HV(0.2), which was approximately three times the hardness of the substrate. The impact toughness and wear resistance of the coated knife were obviously higher than those of uncoated knives. The field tests showed that compared with a conventional 65 Mn knife, the self-grinding knife with laser cladding could maintain its sharp cutting shape after operation for 76 h, which greatly extended the service life of the knife. This study improved the service life of an agricultural cutting tool, which enhanced the cutting performance and efficiency at the same time.
format	article
author	Lingfeng Xu Zhanhua Song Mingxiang Li Fade Li Jing Guo Ming Gao
author_facet	Lingfeng Xu Zhanhua Song Mingxiang Li Fade Li Jing Guo Ming Gao
author_sort	Lingfeng Xu
title	Self-Grinding Silage Knife Strengthened with Ni–WC Alloy Prepared by Laser Cladding
title_short	Self-Grinding Silage Knife Strengthened with Ni–WC Alloy Prepared by Laser Cladding
title_full	Self-Grinding Silage Knife Strengthened with Ni–WC Alloy Prepared by Laser Cladding
title_fullStr	Self-Grinding Silage Knife Strengthened with Ni–WC Alloy Prepared by Laser Cladding
title_full_unstemmed	Self-Grinding Silage Knife Strengthened with Ni–WC Alloy Prepared by Laser Cladding
title_sort	self-grinding silage knife strengthened with ni–wc alloy prepared by laser cladding
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e221d467f4794b46932ce112c4fb7202
work_keys_str_mv	AT lingfengxu selfgrindingsilageknifestrengthenedwithniwcalloypreparedbylasercladding AT zhanhuasong selfgrindingsilageknifestrengthenedwithniwcalloypreparedbylasercladding AT mingxiangli selfgrindingsilageknifestrengthenedwithniwcalloypreparedbylasercladding AT fadeli selfgrindingsilageknifestrengthenedwithniwcalloypreparedbylasercladding AT jingguo selfgrindingsilageknifestrengthenedwithniwcalloypreparedbylasercladding AT minggao selfgrindingsilageknifestrengthenedwithniwcalloypreparedbylasercladding
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Self-Grinding Silage Knife Strengthened with Ni–WC Alloy Prepared by Laser Cladding

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