液压支架内壁激光熔覆铁基耐磨涂层工艺及性能研究

张超, 王成, 王伟, 党雷, 蒋鲤鸿

doi:10.16577/j.issn.1001-1560.2024.0134

材料保护 >

2024 , Vol. 57 >Issue 6: 113 - 120

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0134

工艺篇

液压支架内壁激光熔覆铁基耐磨涂层工艺及性能研究

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(1. 陕西彬长矿业集团有限公司生产服务中心, 陕西咸阳 713600;2. 西安建筑科技大学 a. 机电工程学院, b. 冶金工程学院, 陕西西安 710055)

王伟，教授，博士生导师，研究方向为材料加工中的摩擦与润滑，E-mail:gackmol@163.com

收稿日期: 2023-10-19

修回日期: 2024-01-19

录用日期: 2024-01-25

网络出版日期: 2024-06-24

基金资助

国家自然科学基金面上项目(51975450);陕西省创新能力支撑计划青年科技新星项目(2021KJXX-32);西安市先进制造业技术攻关计划项目(21XJZZ0031);陕西省教育厅服务地方专项科研计划项目(22JC047);陕西省重点研发项目(2023-BGY-383);校企合作计划资助项目(20230790)

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Study on the Technique and Properties of Fe-Based Wear-Resistant Coatings via Laser Cladding on Hydraulic Support Inner Walls

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(1. Production and Service Center, Shaanxi Binchang Mining Co., Ltd., Xianyang 713600, China;2a. School of Mechanical and Electrical Engineering, 2b. School of Metallurgical Engineering, Xi’an University ofArchitecture and Technology, Xi’an 710055, China)

WANG Wei, Professor, Ph.D. Supervisor, Research Focus: Friction and Lubrication in Material Processing, E-mail: gackmol@163.com

Received date: 2023-10-19

Revised date: 2024-01-19

Accepted date: 2024-01-25

Online published: 2024-06-24

Supported by

National Natural Science Foundation of China (51975450);Youth Science and Technology New Star Project of Shaanxi Province Innovation Ability Support Plan (2021KJXX-32);Advanced Technology Research Program of Xi’an (21XJZZ0031);Service Local Special Projects of Shaanxi Provincial Education Department (22JC047);Key Research and Development Projects of Shaanxi Province (2023-BGY-383);School Enterprise Cooperation Program Funding Project(20230790)

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摘要

为改善液压支架立柱内壁的磨损性能，以3种不同Ni含量的铁基合金粉末为原料，采用激光熔覆技术在某液压支架立柱内壁分别制备了X1,X2,X3 3种铁基涂层。通过金相显微镜、三维共聚焦表面形貌仪、万能试验机、高速往复摩擦磨损试验机等对其显微组织、力学性能及摩擦学性能进行分析。结果表明：3种涂层组织均致密均匀，与基体呈良好的冶金结合，熔覆层主要由BCC结构α-Fe和(Fe-Cr)固溶体组成，其中X2与X3熔覆层有(Fe-Cr-Ni)相形成；3种涂层中X1的抗拉强度为563 MPa, X2的抗拉强度为597 MPa, X3的抗拉强度为470 MPa, X2的抗拉强度最高；3种涂层磨损率均小于基体，其中基体的磨损率约为X2涂层磨损率的8倍左右，基体的磨损机理主要为黏着磨损和磨粒磨损，涂层的磨损机理主要为磨粒磨损。

关键词： 激光熔覆; Fe基涂层; 显微组织; 拉伸性能; 摩擦学性能

本文引用格式

张超, 王成, 王伟, 党雷, 蒋鲤鸿 . 液压支架内壁激光熔覆铁基耐磨涂层工艺及性能研究[J]. 材料保护, 2024 , 57(6) : 113 -120 . DOI: 10.16577/j.issn.1001-1560.2024.0134

Abstract

To improve the wear resistance of the inner wall of hydraulic support columns, Fe-based coatings X1, X2 and X3 were prepared on the inner wall of a hydraulic support column using laser cladding technology with three different Ni-content Fe-based alloy powders. The microstructure, mechanical properties and tribological performance of these coatings were analyzed using metallographic microscope, 3D confocal surface topography instrument, universal testing machine and high-speed reciprocating friction and wear testing machine. Results showed that three coatings were homogeneous and compact, and had good metallurgical bonding with the substrate. The cladding layers were mainly composed of α-Fe with a BCC structure and a(Fe-Cr) solid solution, with the formation of a(Fe-Cr-Ni) phase in the X2 and X3 cladding layers. Among the three coatings, the tensile strengthes of X1, X2 and X3 were 563, 597 and 470 MPa, respectively, with X2 having the highest tensile strength. The wear rates of the three coatings were all lower than that of the substrate, with the wear rate of the substrate being approximately eight times that of the X2 coating. The wear mechanism of the substrate was primarily dominated by adhesive wear and abrasive wear, while the wear mechanism of the coatings was mainly abrasive wear.

Key words： laser cladding; Fe-based coating; microstructure; tensile properties; tribological properties

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