Lossless reduction method of welding residual stress of high-strength aluminum alloy large thin-wall storage box
A technology of residual stress and aluminum alloy, which is applied in the field of non-destructive reduction of residual stress in the welding of large thin-walled high-strength aluminum alloy storage tanks, can solve problems such as poor flexibility, component damage, box deformation, etc. The effect of stress peak reduction and elimination of stress concentration areas
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Embodiment 1
[0029] Embodiment 1: see Figure 1 to Figure 3 A method for non-destructive reduction of welding residual stress of a large thin-walled high-strength aluminum alloy storage tank, wherein the material of the storage tank 1 is 2219 aluminum alloy that is subjected to solution treatment after cold rolling and artificial aging treatment, comprising the following steps:
[0030] (1) Set up a residual stress reduction device, the residual stress reduction device includes an industrial control host, an ultrasonic generator and an ultrasonic transducer 2 connected in sequence, and the ultrasonic generator and the ultrasonic transducer 2 are connected by an ultrasonic transmission cable connect;
[0031] (2) The end of the transducer is coated with ultrasonic coupling agent 3, and then the ultrasonic transducer 2 is installed and fixed on the welding joint 4 of the tank 1 that needs stress reduction treatment through the clamping tool, so that the end of the ultrasonic transducer 2 is ...
Embodiment 2
[0033] Example 2: see Figure 4 , a method for non-destructive reduction of welding residual stress of a large thin-walled high-strength aluminum alloy storage tank 1, the material of the storage tank 1 is 2219 aluminum alloy that is subjected to solution treatment after cold rolling and artificial aging treatment, and adopts the method of the present invention to preset The 2219 aluminum alloy test plate with a stress of 300mm×100mm×5mm was subjected to residual stress reduction treatment. Include the following steps:
[0034] (1) Set up a residual stress reduction device, the residual stress reduction device includes an industrial control host, an ultrasonic generator and an ultrasonic transducer 2 connected in sequence, and the ultrasonic generator and the ultrasonic transducer 2 are connected by an ultrasonic transmission cable connection; detect the residual stress value at the central position of the test plate;
[0035] (2) Apply ultrasonic coupling agent 3 on the end...
Embodiment 3
[0037] Embodiment 3: see Figure 5 and Image 6 , adopt the method of the present invention to carry out residual stress reduction treatment to the flange weld seam 6 of storage tank ellipsoidal bottom 5, described method step is as follows:
[0038] (1) Installation of residual stress relief equipment
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