真空熔炼ZTA15钛合金铸件打压泄漏失效分析

doi:10.13385/j.cnki.vacuum.2025.03.05

真空 ›› 2025, Vol. 62 ›› Issue (3): 27-32.doi: 10.13385/j.cnki.vacuum.2025.03.05

真空熔炼ZTA15钛合金铸件打压泄漏失效分析

刘义辉¹, 贾国成¹, 王卫超¹, 麻毅¹, 乔海滨¹, 战春鸣²

1.中国船舶集团有限公司第七二五研究所,河南洛阳 471000;
2.沈阳真空技术研究所有限公司,辽宁沈阳 110042

收稿日期:2024-12-13 出版日期:2025-05-25 发布日期:2025-05-23
作者简介:刘义辉（1987-）,男,河南省洛阳市人,硕士,工程师。

Failure Analysis of Pressure Leakage of Vacuum Melting ZTA15 Titanium Alloy Casting

LIU Yihui¹, JIA Guocheng¹, WANG Weichao¹, MA Yi¹, QIAO Haibin¹, ZHAN Chunming²

1. Luoyang Ship Material Research Institute, Luoyang 471000, China;
2. Shenyang Vacuum Technology Institute Co., Ltd., Shenyang 110042, China

Received:2024-12-13 Online:2025-05-25 Published:2025-05-23

摘要/Abstract

摘要： 某航天领域关键ZTA15钛合金箱体经真空熔炼浇铸及真空热处理工艺处理制备而成。然而,其在组装后的打压测试中频繁出现侧壁泄漏问题。为深入探究失效原因,本研究采用故障树分析法系统性地排查潜在原因,成功精准定位了问题根源。在此基础上,结合理化测试手段对失效机理进行了剖析,验证了定位结果的准确性。通过故障复现实验将研究结果推广至类似情境,为相关行业提供参考。基于上述综合研究,提出了一套针对性的整改方案,有效解决了当前的气密性问题。同时,提炼出切实可行的预防措施,旨在从源头上避免此类钛合金箱体气密性失效的再次发生,为未来同类产品的设计与制造提供了重要参考。

关键词: 真空熔炼, 真空热处理, ZTA15钛合金, 打压泄漏, 补焊, 裂纹

Abstract: The key ZTA15 titanium alloy box as the oil tank shell in the aerospace field was treated by vacuum melting casting and vacuum heat treatment. However, in the pressure test after assembly, there were frequent side wall leakage problems. In order to further explore the cause of failure, this study adoptod fault tree analysis method to systematically investigate the potential causes and successfully determine the root cause of the problem. On this basis, combined with physical and chemical testing, the failure mechanism was analyzed, and the accuracy of the positioning results was verified. In addition, through the fault recurrence experiment, the experimental results are extended to similar situations to provide reference for related industries. Based on the above comprehensive research, this study puts forward a set of targeted rectification plans to effectively solve the current air tightness problem. At the same time, practical preventive measures are extracted to avoid the reoccurrence of such titanium alloy box air tightness failure from the source, which provides important reference and inspiration for the design and manufacture of similar products in the future.

Key words: vacuum melting, vacuum heat treatment, ZTA15 titanium alloy, suppress leakage, weld, crack

中图分类号: TG146.21

刘义辉, 贾国成, 王卫超, 麻毅, 乔海滨, 战春鸣. 真空熔炼ZTA15钛合金铸件打压泄漏失效分析[J]. 真空, 2025, 62(3): 27-32.

LIU Yihui, JIA Guocheng, WANG Weichao, MA Yi, QIAO Haibin, ZHAN Chunming. Failure Analysis of Pressure Leakage of Vacuum Melting ZTA15 Titanium Alloy Casting[J]. VACUUM, 2025, 62(3): 27-32.

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真空熔炼ZTA15钛合金铸件打压泄漏失效分析

Failure Analysis of Pressure Leakage of Vacuum Melting ZTA15 Titanium Alloy Casting

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