液压支架销轴表面激光熔覆层性能分析

doi:10.13251/j.issn.0254-6051.2025.06.043

金属热处理 ›› 2025, Vol. 50 ›› Issue (6): 282-288.DOI: 10.13251/j.issn.0254-6051.2025.06.043

液压支架销轴表面激光熔覆层性能分析

陈霄¹, 祝思佳², 张龙¹, 满栋¹, 李世亮², 张志坚², 杨行², 胡保珠²

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.陕西天元智能再制造股份有限公司, 陕西西安 710049

收稿日期:2024-12-14 修回日期:2025-03-28 出版日期:2025-06-25 发布日期:2025-07-08
通讯作者: 祝思佳,硕士,E-mail:1458147863@qq.com
作者简介:陈霄(1976—),男,学士,主要研究方向为金属材料表面硬化、支护材料防腐、井下车辆运输,E-mail:1272540577@qq.com。

Properties analysis of laser clad coating on hydraulic support pin shaft

Chen Xiao¹, Zhu Sijia², Zhang Long¹, Man Dong¹, Li Shiliang², Zhang Zhijian², Yang Hang², Hu Baozhu²

1. Production Service Center, Shaanxi Binchang Mining Group Co., Ltd., Xianyang Shaanxi 713600, China;
2. Shaanxi Tianyuan Intelligent Remanufacturing Co., Ltd., Xi'an Shaanxi 710049, China

Received:2024-12-14 Revised:2025-03-28 Online:2025-06-25 Published:2025-07-08

摘要/Abstract

摘要： 为有效提升液压支架销轴的表面综合性能,采用激光熔覆技术在35CrMnSiA合金钢销轴表面熔覆自研的TY-1C、TY-2C、TY-3C 3种Fe基合金粉末,系统地分析了熔覆层组织、硬度、摩擦磨损性能及中性盐雾腐蚀性能。结果表明,3种熔覆层表面及近表面的成分呈现优异的空间一致性,其中TY-2C和TY-3C熔覆层组织致密无缺陷,与基体形成良好冶金结合。熔覆层显微组织呈现梯度特征,底部为平面晶,中部为胞状晶与树枝晶,顶部为等轴晶。基体中的回火索氏体＋珠光体可使销轴兼具高强度与韧性。TY-1C和TY-3C熔覆层硬度达550~650 HV0.5,其中TY-3C熔覆层硬度较基体提升320 HV0.5,且分布均匀,其磨损量仅为0.0049 g。经500 h中性盐雾腐蚀后,TY-2C和TY-3C熔覆层未发生腐蚀。TY-3C熔覆层具有最优异的摩擦磨损抗力和中性盐雾腐蚀抗力。

关键词: 激光熔覆, 液压支架销轴, Fe基合金粉末, 摩擦磨损, 中性盐雾腐蚀, 显微硬度

Abstract: To effectively enhance the surface comprehensive performance of hydraulic support pin shafts, laser cladding technology was employed to deposit three self-developed Fe-based alloy powders (TY-1C, TY-2C, and TY-3C) on the 35CrMnSiA steel pin shaft surface. The microstructure, hardness, friction-wear properties, and neutral salt spray corrosion resistance of the clad layers were systematically analyzed. The results show that the three clad layers exhibit excellent spatial consistency in surface and near-surface compositions. Among them, the TY-2C and TY-3C clad layers display dense and defect-free microstructures, forming a robust metallurgical bond with the steel substrate. The clad layers exhibit gradient microstructural characteristics with planar crystals at the bottom, cellular and dendritic crystals in the middle, and equiaxed crystals at the top. The tempered sorbite and pearlite in the substrate ensure a combination of high strength and toughness for the pin shafts. The hardness of the TY-1C and TY-3C clad layers reach 550-650 HV0.5, with TY-3C clad layer showing a uniform hardness distribution and an enhancement of 320 HV0.5 over the substrate, along with a wear loss of only 0.0049 g. After neutral salt spray corrosion for 500 h, the TY-2C and TY-3C clad layers show no corrosion. The TY-3C clad layer possesses the most superior friction-wear resistance and neutral salt spray corrosion resistance.

Key words: laser cladding, hydraulic support pin shaft, Fe-based alloy powder, friction-wear, neutral salt spray corrosion, microhardness

中图分类号:

TG156

陈霄, 祝思佳, 张龙, 满栋, 李世亮, 张志坚, 杨行, 胡保珠. 液压支架销轴表面激光熔覆层性能分析[J]. 金属热处理, 2025, 50(6): 282-288.

Chen Xiao, Zhu Sijia, Zhang Long, Man Dong, Li Shiliang, Zhang Zhijian, Yang Hang, Hu Baozhu. Properties analysis of laser clad coating on hydraulic support pin shaft[J]. Heat Treatment of Metals, 2025, 50(6): 282-288.

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液压支架销轴表面激光熔覆层性能分析

Properties analysis of laser clad coating on hydraulic support pin shaft

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