[1]任利娜,齐 亮,杨 健,等.工业纯钛换热管胀管开裂失效分析及预防措施[J].焊管,2024,47(2):102-108.[doi:10.19291/j.cnki.1001-3938.2024.02.015]
　REN Lina,QI Liang,YANG Jian,et al.Failure Analysis and Prevention Measures of Expansion Tube Cracking of Industrial Pure Titanium Heat Exchanger Tube[J].,2024,47(2):102-108.[doi:10.19291/j.cnki.1001-3938.2024.02.015]
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工业纯钛换热管胀管开裂失效分析及预防措施()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
47
期数:
2024年第2期
页码:
102-108
栏目:
失效分析
出版日期:
2024-02-29

文章信息/Info

Title:
Failure Analysis and Prevention Measures of Expansion Tube Cracking of Industrial Pure Titanium Heat Exchanger Tube
文章编号:
10.19291/j.cnki.1001-3938.2024.02.015
作者:
任利娜; 齐 亮; 杨 健; 苗 壮; 李 刚; 文周锋; 李旭升
1. 西安交通大学 金属材料强度国家重点实验室,西安 710049；
2. 西部钛业有限责任公司,西安 710201；?/div>
3. 西安汉唐分析检测有限公司,西安 710018
Author(s):
REN Lina;  QI Liang;  YANG Jian;  MIAO Zhuang; LI Gang;  WEN Zhoufeng;  LI Xusheng
1. Xi’an Jiaotong University, State Key Laboratory of Mechanical Behavior for Materials, Xi’an 710049, China；
2. West Titanium Industry Co., Ltd., Xi’an 710201, China；?/div>
3. Xi ’an HanTang Analysis and Testing Co., Ltd., Xi’an 710018, China
关键词:
TA2管材; 断口形貌; 失效模式; 裂纹分析
Keywords:
TA2 tube;  fracture morphology;  failure mode;  crack analysis
分类号:
TG115.2
DOI:
10.19291/j.cnki.1001-3938.2024.02.015
文献标志码:
A
摘要:
针对管式换热器制造过程中发生在胀管环节的TA2纯钛薄壁管开裂失效问题，通过对管材断裂处进行宏观断口观察、特征区域EBSD、SEM及微观组织等检测，分析管材失效原因、裂纹产生机理以及裂纹产生过程的影响因素。结果表明：该薄壁钛管的失效源于成品轧制过程中存在的管材头部纵向轧制纹缺陷未被切除，导致后续胀管裂纹扩展甚至贯穿开裂。虽然管材内壁的这种缺陷远小于标准要求，但对于后续管材受力变形有潜在的影响，应最大可能消除。鉴于此，针对后续的安全生产及使用提出了有效的预防措施和建议。
Abstract:
Reason has been analyzed on the cracking and the failure of TA2 pure titanium thin?alled tubes that occur during the expansion process in the manufacturing of the tube heat exchanger. By locating the fracture location of failed tubes, observing macroscopic fracture surfaces, testing characteristic areas such as EBSD, SEM, and microstructure, causes of tube failure and the mechanism of crack were explored, and the process and influencing factors of crack were analyzed. The results indicate that the failure of the thin?alled titanium tube is due to the original defect at the head of the tube that was not completely removed during the rolling stage of the finished product, resulting in subsequent expansion of the tube crack and even penetration cracking. Although the longitudinal rolling lines on the inner wall of the tube are much smaller than the standard requirements, the subsequent stress deformation of the pipe and should be eliminated as much as possible. The effective preventive measures and suggestions have been proposed for the subsequent safety production and use.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2023-11-20
基金项目：陕西省重点研发计划重点产业创新链——工业领域“航空液压管路系统高可靠性连接技术”（项目编号2020ZDLGY01-07）。
作者简介：任利娜 （1980—），女，博士研究生，正高级工程师，主要从事稀有金属成分设计及连接技术研究。
更新日期/Last Update: 2024-03-07