摘要
为提升采油注水易蚀易损件(如柱塞杆和组合阀)表面的耐磨性,采用激光熔覆技术在柱塞杆和组合阀表面加工镍铬锰钼硅合金粉涂层,并通过X射线衍射物相分析、微观形貌分析、显微硬度测试、摩擦磨损性能评价和磨痕分析等,对涂层的组织特性和力学性能进行分析和评价。研究结果表明:熔覆层主要由Fe-Cr化合物构成,柱塞杆与组合阀的Fe-Cr化合物衍射峰计数分别达到4684.87与4621.80 cts,晶面间距为2.03与2.04?,相对强度均为100%。柱塞杆与组合阀均呈现树枝晶组织、平面晶及胞状组织,热影响区则呈现细小马氏体组织。柱塞杆熔覆层硬度超过500 HV,而组合阀的硬度约为300 HV,显著高于基体硬度。柱塞杆1号样品的摩擦系数在0.8以上保持稳定,而2号样品在迅速达到0.85后略有下降;组合阀的F1与F2样品则表现出较好的耐磨性,摩擦系数为0.6~0.8,而F3与F4样品的摩擦系数超过1.0,耐磨性较差。磨痕分析进一步证实了涂层的犁削与黏着磨损特征。因此,利用激光熔覆技术加工采油注水易蚀易损件的镍铬锰钼硅合金粉涂层能显著提高采油注水易蚀易损件的纳米硬度和耐磨性。
In order to improve the surface wearing resistance of corrosion-wearing-prone parts(such as plunger rods and combination valves)of oil production and water injection,in this study,a Ni-Cr-Mn-Ta-Si alloy-powder coating was processed on the surfaces of the plunger rods and combination valves using the laser fusion cladding technology.Then,the surfaces of the valves were analyzed by the X-Ray diffraction physical phase analysis,microscopic morphology analysis,microhardness test,friction and wear performance evaluation,and abrasion analysis.The test results showed that the fusion cladding was mainly composed of Fe-Cr compounds.The diffraction peak counts of the Fe-Cr compounds separately reached 4684.87 and 4621.80 cts for the plunger rod and the combination valve,with the crystal plane spacings of 2.03 and 2.04Å.And the relative strengths of were both 100%.The dendritic,planar and cellular organizations were observed both in the plunger rod and the combined valves,while the heat affected zone showed fine martensite organization.The hardness of the fusion cladding layer of the plunger rod exceeded 500 HV,while the hardness of the combined valves was about 300 HV,which was significantly higher than the hardness of the substrate.The friction coefficient of the sample 1 of plunger rod remained stable above 0.8,while the coefficient of the sample 2 decreased slightly after rapidly reaching the value of 0.85.The F1 and F2 samples of the combination valves showed better wearing resistance,with friction coefficients of 0.6-0.8,while the friction coefficients of the F3 and F4 samples exceeded 1.0,which was poorer in terms of wearing resistance.The abrasion analysis further endorsed the ploughing and adhesive wearing characteristics of the coatings.Therefore,the Ni-Cr-Mn-Mo-Si alloy-powder coating pressed by the laser fusion technollgy could significantly improve the nano-hardness and wearing resistance of the corrosion-prone and wear-prone parts for oil production and water injection.
作者
武骞
王珂
王侦倪
秦妞妞
谢燕翔
WU Qian;WANG Ke;WANG Zhenni;QIN Niuniu;XIE Yanxiang(Research Institute of Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,Xi’an 710065,Shaanxi,China;Xi’an University,Xi’an 710065,Shaanxi,China)
出处
《金属功能材料》
2025年第4期112-121,共10页
Metallic Functional Materials
关键词
激光熔覆
镍铬锰钼硅合金
采油注水易蚀易损件
耐磨性
laser cladding
Ni-Cr-Mn-Mo-Si alloy
corrosion-wearing-prone parts in oil exploration and water injection
wearing resistance
作者简介
武骞(1978-),男,大学本科,高级工程师,E-mail:413162940@qq.com。
