Aluminum welding agentThe manufacturer believes that there are many methods for welding aluminum alloys, each with its different applications. In addition to traditional fusion welding, resistance welding, and gas welding, other welding methods (such as plasma arc welding, electron beam welding, vacuum diffusion welding, etc.) can also easily weld aluminum alloys together. Commonly used aluminum alloy welding methods should be selected based on the grade of aluminum and aluminum alloys, the thickness of the welded parts, product structure, and requirements for weldability.

(1) Gas welding

The aluminum welding agent manufacturer believes that the oxygen-acetylene gas welding flame has low thermal power, heat dispersion, significant deformation of the welded parts, and low productivity. When gas welding thick aluminum workpieces, preheating is required. The metal in the weld seam not only has coarse grains and loose structure but is also prone to defects such as aluminum oxide inclusions, pores, and cracks. This method is only used for non-critical aluminum structural components and for repairing castings with a thickness range of 0.5-10.

(2) Tungsten inert gas (TIG) welding

　　Aluminum welding agentThe manufacturer believes that this welding method is conducted under argon protection, with concentrated heat, stable arc burning, dense weld metal, and high strength and plasticity of the welded joints, making it widely used in industry. Tungsten inert gas welding is an ideal method for aluminum alloys; however, the equipment is complex and not suitable for outdoor operations.

(3) Tungsten inert gas (TIG) welding

The aluminum welding agent manufacturer believes that automatic and semi-automatic TIG welding has advantages such as high arc power, concentrated heat, and a small heat-affected zone, improving production efficiency by 2 to 3 times compared to manual TIG welding. It can weld pure aluminum and aluminum alloy plates with a thickness of less than 50 mm. For example, when welding 30 aluminum plates, preheating is not required; simply welding the two layers before and after can achieve a smooth surface and high-quality weld seam. Semi-automatic TIG welding is suitable for positioning welds, intermittent short welds, and irregularly shaped workpieces. The semi-automatic TIG gun allows for convenient and flexible welding; however, the wire diameter for semi-automatic welding is smaller, making the weld seams more sensitive to porosity.

(4) Pulsed argon arc welding

(1) Pulsed tungsten inert gas (TIG) welding

The aluminum welding agent manufacturer believes that this method can significantly improve the stability of low current welding processes and allows for easy control of arc power and weld formation by adjusting various process parameters. The deformation of welded parts is small, the heat-affected zone is small, making it particularly suitable for thin plate welding and all-position welding; it is also applicable to heat-sensitive forged aluminum, hard aluminum, and super-hard aluminum.

(2) Melted electrode pulsed argon arc welding

The aluminum welding agent manufacturer believes that this method uses a small average welding current with a wide range of parameter adjustments. It results in small deformation of workpieces and a small heat-affected zone while maintaining high productivity with good resistance to porosity and cracking. It is suitable for all-position welding of thin aluminum alloy plates with a thickness of 2-10.

(5) Resistance spot welding and seam welding

The aluminum welding agent manufacturer believes that this method can be used for welding aluminum alloy thin plates with a thickness of less than 4. For products with higher quality requirements, DC impulse spot welding and seam welding can be employed. This type of welding requires complex equipment characterized by high current levels and high productivity, making it particularly suitable for mass production of components.