| 李宗原,李健,石金大,高延达,沈军.某型直升机尾减速器从动机匣腐蚀故障分析及预防对策研究[J].装备环境工程,2014,11(6):105-109. LI Zong-yuan,LI Jian,SHI Jin-da,GAO Yan-da,SHEN Jun.Corrosion Failure Analysis and Preventive Measure of a Type of Helicopter Tail Gearbox Casing Assembly[J].Equipment Environmental Engineering,2014,11(6):105-109. |
| 某型直升机尾减速器从动机匣腐蚀故障分析及预防对策研究 |
| Corrosion Failure Analysis and Preventive Measure of a Type of Helicopter Tail Gearbox Casing Assembly |
| 投稿时间：2014-09-15 修订日期：2014-12-15 |
| DOI：10. 7643 / issn. 1672-9242. 2014. 06. 018 |
| 中文关键词: 直升机 尾减速器从动机匣 腐蚀 |
| 英文关键词:helicopter tail gearbox casing assembly corrosion |
| 基金项目: |
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| Author | Institution |
| LI Zong-yuan | General Staff Department Army Aviation Institute, Beijing 101121, China |
| LI Jian | General Staff Department Army Aviation Institute, Beijing 101121, China |
| SHI Jin-da | General Staff Department Army Aviation Institute, Beijing 101121, China |
| GAO Yan-da | General Staff Department Army Aviation Institute, Beijing 101121, China |
| SHEN Jun | General Staff Department Army Aviation Institute, Beijing 101121, China |
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| 中文摘要: |
| 目的 分析某型直升机尾减速器从动机匣腐蚀故障原因,建立预防该类腐蚀故障问题的处理方法。 方法 通过腐蚀故障机基本信息分析,腐蚀故障部位结构、材料和腐蚀形貌分析,得出腐蚀故障原因,采取“原位冶处理方式建立该类腐蚀故障处理方法。 结果 某型直升机尾减速器从动机匣安装面有异种金属接触和凹陷型结构,并承受交变载荷,易发生腐蚀故障,部队外场维护只能通过检查和监控延缓腐蚀进程,解决该问题需通过“湿装配冶的密封剂处理技术和螺栓表面防护加强方法。 结论 采取机上原位进行尾减速器从动机匣螺栓固定端面“湿装配冶密封处理和螺栓外表面防护涂层加强处理,能够防止电解液进入螺栓固定端面和螺栓孔内部,达到腐蚀预防的目的。 |
| 英文摘要: |
| Objective To analyze the cause for a type of helicopter tail gearbox casing assembly corrosion and to establish a preventive measure. Methods Through the analysis of basic information on corrosion failure, corrosion location structure, material and appearance, we concluded the cause for the corrosion and established the preventive measure with an insitu treatment. Results There were dissimilar metal contact and concave structure on the fitting surface of the type of tail gearbox, and corrosion occurred easily under cyclic loading. The army field maintenance could only delay the corrosion process through inspection and monitoring. To solve the problem, wet assembly of sealant processing techniques and blot surface preventive strengthening were required. Conclusion With in-situ tail gearbox casing assembly fitting surface wet assembly and blot surface preventive strengthening, it was able to prevent electrolyte from infiltrating the fitting hole, and to achieve the purpose of corrosion prevention. |
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