Surface depositing method for improving aluminum alloy welding joint strength
A technology for welded joints and aluminum alloys, which is applied in the coating process and coating of metal materials, can solve the problems of joint performance degradation, stress concentration, performance degradation of aluminum alloy welded joints, etc., and achieve the effect of improving tensile strength
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Embodiment 1
[0026] The steps of a surface cladding method for improving the strength of aluminum alloy welded joints are as follows:
[0027] 1) Surface treatment is carried out on the welded joints of 2219 aluminum alloy welded by argon arc welding to remove oil stains and oxide layers on the surface near the weld; chemical and mechanical methods are used for surface treatment;
[0028] 2) Deposit the area of the welded joint to be clad;
[0029] 3) After the welding is completed, use a wire brush to polish the surface of the welded joint, remove the blackened area on the surface, and complete the first welding;
[0030] 4) Repeat steps 1)-3) twice to complete 3 layers of cladding.
[0031] The heat source in the cladding method in step 2) is CMT;
[0032] The cladding process of the cladding method in step 2) is: according to the cladding method, measure the size of the heat-affected zone of the welded joint to be 10mm, such as figure 1 As shown; the required number of cladding is ...
Embodiment 2
[0037] The steps of a surface cladding method for improving the strength of aluminum alloy welded joints are as follows:
[0038] 1) Surface treatment is carried out on the welded joints of 2219 aluminum alloy welded by argon arc welding to remove oil stains and oxide layers on the surface near the weld; chemical and mechanical methods are used for surface treatment;
[0039] 2) Deposit the area of the welded joint to be clad;
[0040] 3) After the welding is completed, use a wire brush to polish the surface of the welded joint, remove the blackened area on the surface, and complete the first welding;
[0041] 4) Repeat steps 1)-3) twice to complete 3 layers of cladding.
[0042] The heat source in the cladding method in step 2) is CMT;
[0043] The cladding process of the cladding method in step 2) is as follows: according to the cladding method, the size of the heat-affected zone of the welded joint is measured to be 10mm, the number of cladding passes required is 3, and...
Embodiment 3
[0048] The steps of a surface cladding method for improving the strength of aluminum alloy welded joints are as follows:
[0049] 1) Surface treatment is carried out on the welded joints of 2219 aluminum alloy welded by argon arc welding to remove oil stains and oxide layers on the surface near the weld; chemical and mechanical methods are used for surface treatment;
[0050] 2) Deposit the area of the welded joint to be clad;
[0051] 3) After the welding is completed, use a wire brush to polish the surface of the welded joint, remove the blackened area on the surface, and complete the first welding;
[0052] 4) Repeat steps 1)-3) twice to complete 3 layers of cladding.
[0053] The heat source in the cladding method in step 2) is CMT;
[0054] The cladding process of the cladding method in step 2) is as follows: according to the cladding method, the size of the heat-affected zone of the welded joint is measured to be 10mm, the number of cladding passes required is 3, and...
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