Aluminum alloy arc spot welding method based on CMT (Cold Metal Transmission Welding) and welding system
A technology of arc spot welding and arc welding, which is applied in the direction of arc welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of large welding deformation, large linear expansion coefficient of aluminum alloy, difficult aluminum alloy connection, etc. Effects of deformation, reduced welding heat input, and low process cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0034] In this embodiment, the material of the spacer 3 is brass. The aluminum alloy plates 1 and 2 to be welded are both aluminum alloy AA6061-T6. The thickness of the plates is matched: 1mm+1mm. The aluminum alloy plates 1 and 2 to be welded are mechanically polished. Remove the oxide layer on the surface, and use acetone to remove the oil stains on the position to be welded. The material of the welding wire 4 is AlSi5 and the diameter is 1.2mm.
[0035] The welding parameters are: welding current 132A, welding voltage 15.9V, wire feeding speed 6.2m / min, arc length correction 0%, welding wire withdrawal frequency 70Hz, argon gas as shielding gas, flow rate 15L / min, welding time 1s.
[0036] The working process of this embodiment is as image 3 a~ image 3 h shows:
[0037] The first step is the pretreatment of the welding material: a process hole is punched in the aluminum alloy plate 1 to be welded; the process hole is cylindrical with a diameter of 6.5 mm.
[0038] The second st...
Embodiment 2
[0042] The process steps are the same as in the first embodiment, except that the welding parameters are: welding current 85A, welding voltage 12.6V, wire feeding speed 5.0m / min, welding time 1.9s.
Embodiment 3
[0044] The process steps are the same as in the first embodiment, except that the welding parameters are: welding current 158A, welding voltage 16.8V, wire feeding speed 7.0m / min, welding time 0.3s.
[0045] Under the conditions of the above welding parameters, perforating the upper aluminum alloy plate 1 with holes will help the upper and lower aluminum alloy plates fuse to form a fusion welded joint, and placing a spacer under the lower layer of non-perforated aluminum alloy plate 2 can effectively avoid the The low melting point of aluminum alloy leads to the collapse of the solder joints, so the welding quality and stability are improved, and good welding joints can be obtained. The joints are smooth and symmetrical, free of spatter, and few welding defects such as pores and cracks. After welding, the universal testing machine is used for stretching, and the joint can reach a higher shear strength. At the same time, the multi-point continuous spot welding joint has a smooth a...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More