摘要: |
某型号发动机燃烧室壳体的钎焊外部零件在拉剪试验中断裂,对钎焊断口形貌进行了外观检查、断口分析和原因分析。结果表明:发动机燃烧室壳体的钎焊外部零件断裂是由于焊接粘接截面积较小和大面积局部密集分布的空洞造成的,并提出强化焊工技能培训的建议和适当延长手工火焰钎焊加热时间可增加承载强度的措施。 |
关键词: 外部零件;钎焊;钎透率 |
基金项目: |
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Analysis of Brazing Fracture of External Parts of A Certain Type of Engine |
Zhou Xuxu Lei Huanping Liu Baofeng Qi Xiaowei Liu Jing
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Xi’an Changfeng Electromechanical Research Institute, Xi’an 710065
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Abstract: |
The brazing external parts of a certain type of engine combustion chamber are broken in the shear test. The appearance of the brazing fracture surface is analyzed, and the fracture analysis and the cause analysis are carried out. The results show that the brazing of the external combustion of the combustion chamber of the engine is caused by the small cross-sectional area of the welding bonding and the large area of the local dense distribution, and the suggestion of strengthening the welder’s skill training and the proper extension of the manual flame brazing heating time can increase the carrying capacity of the measures. |
Key words: external parts;brazing;brazing penetration |