多级降压调节阀阀芯表面堆焊Stellite12合金的组织和性能

doi:10.13251/j.issn.0254-6051.2024.10.043

金属热处理 ›› 2024, Vol. 49 ›› Issue (10): 264-271.DOI: 10.13251/j.issn.0254-6051.2024.10.043

多级降压调节阀阀芯表面堆焊Stellite12合金的组织和性能

陈林¹, 曹永民², 蒋永兵¹, 郝娇山¹, 汤帆顺¹, 马仕川¹, 费勤楠³

1.重庆川仪调节阀有限公司, 重庆 400707;
2.国家管网集团南山(山东)天然气有限公司, 山东烟台 265706;
3.东南大学材料科学与工程学院, 江苏南京 211102

收稿日期:2024-04-22 修回日期:2024-08-02 出版日期:2024-11-28 发布日期:2024-11-28
作者简介:陈林(1989—),男,工程师,硕士,主要研究方向为新技术、新材料的焊接工艺,E-mail: m15320371840@163.com
基金资助:
重庆市技术创新与应用发展专项重点项目(CSTB2022TIAD-KPX0211)

Microstructure and properties of Stellite12 alloy surfacing welded on multi-stage step-down control valve spool

Chen Lin¹, Cao Yongmin², Jiang Yongbing¹, Hao Jiaoshan¹, Tang Fanshun¹, Ma Shichuan¹, Fei Qinnan³

1. Chongqing Chuanyi Control Valve Co., Ltd., Chongqing 400707, China;
2. Pipe China Nanshan (Shandong) LNG Co., Ltd., Yantai Shandong 265706, China;
3. School of Materials Science and Engineering, Southeast University, Nanjing Jiangsu 211102, China

Received:2024-04-22 Revised:2024-08-02 Online:2024-11-28 Published:2024-11-28

摘要/Abstract

摘要： 为了提高多级降压调节阀阀芯的耐磨和耐蚀性能,并缩短该类零件的生产制造周期,采用激光熔覆和钨极气体保护电弧焊两种表面堆焊技术,在阀芯表面上制备Stellite12合金。对比研究了堆焊合金层的微观组织、显微硬度、摩擦磨损性能和均匀腐蚀性能。结果表明,两种工艺制备Stellite12合金层均与基体形成良好的冶金结合,微观组织主要由平面晶、粗大的柱状枝晶和细小致密的等轴枝晶组成。相比于钨极气体保护电弧焊,激光熔覆合金层具有更加致密、细小的枝晶组织,枝晶成分分布也更加均匀。同时,激光熔覆合金层的显微硬度更高、耐磨性能更优。另外,激光熔覆合金层相比钨极气体保护电弧焊的具有更低的均匀腐蚀速率,表现出较为均匀的腐蚀行为。

关键词: 调节阀阀芯, 激光熔覆, 钨极气体保护电弧焊, Stellite12合金, 组织, 性能

Abstract: In order to improve the abrasion resistance and corrosion resistance of multi-stage step-down control valve spool, and shorten the manufacturing cycle of such parts, Stellite12 alloy was prepared on the surface of valve spool by laser cladding and gas tungsten arc welding(GTAW). The microstructure, microhardness, friction and wear properties, uniform corrosion properties of the surfacing welded Stellite12 alloy layer were compared and studied. The results show that the surfacing welded alloy layer prepared by both methods forms a good metallurgical bond with the substrate, and the microstructure is mainly composed of dendrite structures of plane crystal, coarse columnar dendrites, fine and dense equiaxed dendrites. Compared with that of GTAW, the laser clad alloy layer has more dense and fine dendrite structure, and more uniform distribution of dendrite composition. At the same time, the laser clad alloy layer has higher microhardness and better abrasion resistance. In addition, the laser clad alloy layer has lower uniform corrosion rate and more uniform corrosion behavior than the GTAW alloy layer.

Key words: control valve spool, laser cladding, GTAW, Stellite12 alloy, microstructure, properties

中图分类号:

TG455

陈林, 曹永民, 蒋永兵, 郝娇山, 汤帆顺, 马仕川, 费勤楠. 多级降压调节阀阀芯表面堆焊Stellite12合金的组织和性能[J]. 金属热处理, 2024, 49(10): 264-271.

Chen Lin, Cao Yongmin, Jiang Yongbing, Hao Jiaoshan, Tang Fanshun, Ma Shichuan, Fei Qinnan. Microstructure and properties of Stellite12 alloy surfacing welded on multi-stage step-down control valve spool[J]. Heat Treatment of Metals, 2024, 49(10): 264-271.

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多级降压调节阀阀芯表面堆焊Stellite12合金的组织和性能

Microstructure and properties of Stellite12 alloy surfacing welded on multi-stage step-down control valve spool

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