摘要
航空煤油管道是保障飞机燃料供应的关键设备,其焊缝的综合性能是影响航空运输安全的重要因素。基于非熔化极性惰性气体保护电弧焊(TIG)工艺制备焊缝接头试样,在20~60 N压力载荷下进行往复摩擦测试,获得焊缝区的磨损形貌特征和损失质量的变化规律。采用电化学腐蚀和酸性腐蚀试验来评估焊缝材料的耐腐蚀性能。针对焊缝区、热影响区和母材区的力学性能差异,分别进行硬度测试和冲击韧性测试。在20~50 kJ/cm^(2)焊接线能量范围内,研究力学性能与热输入量的内在联系。结果表明,管道焊缝具有良好的韧性、硬度、耐磨性能和耐腐蚀性能,可有效保障航空运输安全。
The aviation kerosene pipeline is a key equipment to ensure the supply of aircraft fuel,and the comprehensive performance of its welds is an important factor affecting the safety of aviation transportation.Weld joint specimens were prepared based on TIG welding technology,and reciprocating friction tests were conducted under a pressure load of 20~60 N to obtain the wear morphology characteristics and the variation law of loss mass in the weld zone.Electrochemical corrosion and acid corrosion tests were used to evaluate the corrosion resistance of weld materials.For the differences in mechanical properties between the weld zone,heat affected zone,and base metal zone,hardness testing and impact toughness testing should be conducted separately.The intrinsic relationship between mechanical properties and heat input was studied within the welding line energy range of 20~50 kJ/cm^(2).The results indicate that pipeline welds have good toughness,hardness,wear resistance,and corrosion resistance,which can effectively ensure the safety of air transportation.
作者
孟德印
MENG Deyin(Shandong University of Aeronautics,Binzhou,Shandong 256600)
出处
《化工装备技术》
2025年第4期12-16,共5页
Chemical Equipment Technology
关键词
焊接
力学性能
耐磨性
耐腐蚀性
Welding
Mechanical properties
Wear resistance
Corrosion resistance
