| 张世艳,张伦武,杨小奎,吴帅,周堃,符朝旭.典型螺栓/螺母装配件湿热海洋大气环境适应性研究[J].装备环境工程,2021,18(11):151-156. ZHANG Shi-yan,ZHANG Lun-wu,YANG Xiao-kui,WU Shuai,ZHOU Kun,FU Zhao-xu.Adaptability Research of Typical Bolt/Nut Assembly Parts in Humid and Hot Marine Atmospheric Environment[J].Equipment Environmental Engineering,2021,18(11):151-156. |
| 典型螺栓/螺母装配件湿热海洋大气环境适应性研究 |
| Adaptability Research of Typical Bolt/Nut Assembly Parts in Humid and Hot Marine Atmospheric Environment |
| 投稿时间：2021-03-21 修订日期：2021-05-19 |
| DOI：10.7643/issn.1672-9242.2021.11.021 |
| 中文关键词: 螺栓螺母装配件 户外暴露试验 电偶腐蚀 扭矩中图分类号:TJ04 文献标识码:A 文章编号:1672-9242(2021)11-0151-06 |
| 英文关键词:bolt/nut assembly part outdoor exposure test galvanic corrosion torque |
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| 中文摘要: |
| 目的 研究典型螺栓/螺母装配件在湿热海洋大气环境下的适应性。方法 在万宁大气环境试验站开展螺栓/螺母装配件为期24个月的户外暴露试验，通过环境扫描电镜(SEM)、电化学试验、力矩测试，研究螺栓/螺母装配件在我国湿热海洋大气环境中的腐蚀行为和力矩变化规律。结果 装配件组合30CrMnSiA镀镉钝化螺栓与30CrMnSiA镀镉钝化螺母(组合A)、30CrMnSiA镀镉钝化螺栓与30CrMnSiA镀锌钝化螺母(组合B)、30CrMnSiA镀镉钝化螺栓与0Cr16Ni6钝化螺母(组合C)对应的电偶腐蚀电流分别约为0.6、37、100 µA，装配状态下组合C户外暴露24个月后最大拧出力矩增加53%。结论 装配导致的电偶腐蚀效应对螺栓/螺母紧固件的性能变化具有明显影响，非装配状态下30CrMnSiA镀镉钝化螺栓在万宁户外暴露期间没有出现基体腐蚀现象，而装配状态下组合C在万宁户外暴露期间出现较为严重的基体锈蚀，造成在户外暴露期间最大拧出力矩呈不断增加趋势。 |
| 英文摘要: |
| To study the adaptability of typical bolt/nut assembly parts in humid and hot marine atmospheric environment. The outdoor exposure test of bolt/nut was carried out in Wanning atmosphere environment test station for 24 months. The corrosion behavior and torque variation law of bolt/nut assembly in humid and hot marine atmospheric environment were studied by environmental scanning electron microscope (SEM), electrochemical and torque test. The galvanic corrosion current corresponding to assembly A(30CrMnSiA cadmium plating passivation bolt and 30CrMnSiA cadmium plating passivation nut), assembly B (30CrMnSiA cadmium plating passivation bolt and 30CrMnSiA zinc plating passivation nut), assembly C (30CrMnSiA cadmium plating passivation bolt and 0Cr16Ni6 passivation nut) was about 0.6, 37, 100 µA respectively, the screw torque of assembly C under assembly state increased by 53% after 24 months of outdoor exposure. The performance of bolt/nut fastener was obviously influenced by the galvanic corrosion effect caused by assembly. There was no corrosion of 30CrMnSiA cadmium plated passivation bolt in non-assembly state during outdoor exposure in Waning, while assembly C under assembly condition had more serious matrix corrosion, which caused an increasing trend of the maximum torque during outdoor exposure test. |
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