香蕉懒了（Bananas are lazy）.docVIP

香蕉懒了（Bananas are lazy） Deformation and weld defect control technology and application of welding Aluminum Alloy thin-walled parts In recent years, with the rapid development of Chinas aerospace industry, Aluminum Alloy as an ideal light material, used in the aerospace field are more and more. Aluminum Alloy materials can reduce the weight of the airplane structure, significantly improves the structural performance advantages etc.. Aluminum Alloy thin Gradually applied in the field of aviation parts, is the only way which must be passed whole, lightweight and efficient realization of the aircraft. Welding technology as a key field of aerospace connection technology is an important way to realize component connecting various materials, manufacturing process has been from the original auxiliary Evolution has become a key technology in aircraft manufacturing. Aluminum Alloy thick wall parts welding is common in aircraft parts manufacturing, welding technology is more mature. With the Aluminum Alloy thin-walled parts is increasing, will undoubtedly increase the welding manufacturing difficulty, how to control the Aluminum Alloy thin zero Welding defects and welding deformation has become an important link to ensure the quality of welding parts. The traditional welding Aluminum Alloy sheet metal parts is usually used before welding parts pickling, welding process with a welding fixture for welding, after welding method of welding repair. The welding process is completely no problem for the thick wall parts of the ordinary, but for thin wall The welding parts, due to a moving heat source caused by uneven heating of the metal, causing great temperature gradient in the weld pool nearby, caused by the welding stress and deformation. The reaction in thin wall welded parts, welding residual stress and deformation for the warpage of parts of the visual performance. Since The thin-walled parts welding parameter control is not good, slightly burnt parts caused by big current, curr