双耳托板螺钉断裂原因分析及改进措施

doi:10.13251/j.issn.0254-6051.2021.07.048

金属热处理 ›› 2021, Vol. 46 ›› Issue (7): 249-253.DOI: 10.13251/j.issn.0254-6051.2021.07.048

双耳托板螺钉断裂原因分析及改进措施

林文钦, 路寒, 徐心洁, 杨元熙, 邓枫, 吴佳欣

航空工业成都飞机工业集团有限责任公司, 四川成都 610091

收稿日期:2021-02-10 出版日期:2021-07-25 发布日期:2021-12-10
作者简介:林文钦(1986—),男,高级工程师,主要研究方向为金属材料,联系电话:028-87497038。

Fracture reason analysis and improvement measures of binaural plate screw

Lin Wenqin, Lu Han, Xu Xinjie, Yang Yuanxi, Deng Feng, Wu Jiaxin

AVIC Chengdu Aircraft Industrial Group Co., Ltd., Chengdu Sichuan 610091, China

Received:2021-02-10 Online:2021-07-25 Published:2021-12-10

摘要/Abstract

摘要： 双耳托板螺钉装配过程中在托板与杆部结合处发生断裂。对断裂螺钉进行断口形貌分析,确定断裂性质为过载断裂;对同批次螺钉进行了金相、硬度、拉力试验、楔负载试验以及模拟安装试验,结果表明,螺钉断裂原因主要与断裂位置流线密集有关,同时热处理制度不匹配和流线被切断对断裂有促进作用。针对螺钉断裂有关原因提出了改进冷镦工艺、调整热处理制度和优化头(托板)杆加工工艺等改进措施,并对改进效果进行了验证,结果表明改进有效,新工艺加工的螺钉装配过程未再发生相同断裂现象。

关键词: 双耳托板螺钉, 过载断裂, 流线, 工艺改进

Abstract: Fracture occurred at the joint between the bracket and the rod during assembly of the binaural plate screw. The fracture morphologies and characteristics of the broken screw were analyzed and identified as overload fracture. According to the metallographical analysis, hardness test, tensile test, wedge load test, and simulated installation test performed on the same batch of the screws, the results show that the cause of the screw fracture is mainly related to the intensive streamline at the fracture position, while the mismatch of heat treatment system and the being cut off of the metal streamline promote the fracture. Improvement measures such as improving the cold heading process, adjusting the heat treatment process and optimizing the processing of the head (supporting plate) rod were put forward for the screw fracture reasons. The improvement has been verified as effective, and no same fracture occurs during the screw assembly manufactured by the new process.

Key words: binaural plate screw, overload fracture, flow line, process improvement

中图分类号:

TG115

林文钦, 路寒, 徐心洁, 杨元熙, 邓枫, 吴佳欣. 双耳托板螺钉断裂原因分析及改进措施[J]. 金属热处理, 2021, 46(7): 249-253.

Lin Wenqin, Lu Han, Xu Xinjie, Yang Yuanxi, Deng Feng, Wu Jiaxin. Fracture reason analysis and improvement measures of binaural plate screw[J]. Heat Treatment of Metals, 2021, 46(7): 249-253.

参考文献

[1] 陶春虎, 郭倩旎. 紧固件的失效分析及其预防[M]. 北京: 航空工业出版社, 2013: 17-54.
[2] 王强, 刘子扬. 一种双耳托板螺钉托板的成型方法: 中国, CN110757095A[P]. 2020-02-07.
[3] 田浩, 傅国如, 陈荣, 等. 某航空发动机镀镉螺栓断裂失效分析[J]. 金属热处理, 2019, 44(S1): 182-185.
Tian Hao, Fu Guoru, Chen Rong, et al. Fracture failure analysis of cadmium plating bolt in an aero-engine[J]. Heat Treatment of Metals, 2019, 44(S1): 182-185.
[4] 沈步楼, 沈禹. 深孔圆环成形缺陷分析及改进方案[J]. 锻压技术, 2020, 45(7): 29-35.
Shen Bulou, Shen Yu. Forming defect analysis and improvement scheme of deep hole ring[J]. Forging and Stamping Technology, 2020, 45(7): 29-35.
[5] GB/T 3098.1—2010,紧固件机械性能螺栓、螺钉和螺柱[S].
[6] 于海华, 严海燕, 张敬彤, 等. 30CrMnSiA钢沉头螺栓断裂失效分析[J]. 金属热处理, 2021, 46(3): 223-228.
Yu Haihua, Yan Haiyan, Zhang Jingtong, et al. Failure analysis of 30CrMnSiA steel countersunk bolt[J]. Heat Treatment of Metals, 2021, 46(3): 223-228.
[7] 美国金属学会. 金属手册(第9 卷): 断口金相与断口图谱[M]. 北京: 机械工业出版社, 1983: 109-112.
[8] 赵建华, 徐尔灵, 王海, 等. 铰链梁铸件爆裂失效分析[J]. 铸造工程, 2020, 44(5): 19-22.
Zhao Jianhua, Xu Erling, Wang Hai, et al. Failure analysis of hinge beam casting[J]. Foundry Engineering, 2020, 44(5): 19-22.
[9] 宋寅哲, 金城旭, 任靖日, 等. 基于仿真金属流线的冷锻表面粗糙带预测及改进[J]. 塑性工程学报, 2019, 26(4): 55-60.
Song Yinzhe, Jin Chengxu, Ren Jingri, et al. Prediction and improvement of rough band of cold forging surface based on simulated metal flow lines[J]. Journal of Plasticity Engineering, 2019, 26(4): 55-60.
[10] 康元, 袁娅, 范静婷. ML25螺钉掉头原因分析[J]. 中国金属通报, 2018(6): 192-193.
[11] 王宁, 丁北斗, 崔萌, 等. Cr12MoV钢刀具开裂原因分析[J]. 金属热处理, 2020, 45(10): 246-248.
Wang Ning, Ding Beidou, Cui Meng, et al. Cracking cause analysis of Cr12MoV steel cutting tool[J]. Heat Treatment of Metals, 2020, 45(10): 246-248.

双耳托板螺钉断裂原因分析及改进措施

Fracture reason analysis and improvement measures of binaural plate screw

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