Welding

A comprehensive guide to aluminum profile welding methods and material selection

There are many different methods for welding aluminum profiles, and each method has its own specific application scenarios.

In addition to the commonly used fusion welding, resistance welding and gas welding, there are also advanced technologies such as plasma arc welding, electron beam welding and vacuum diffusion welding, which can also easily connect aluminum profile materials together.

When choosing a welding method for aluminum profiles, multiple factors should be considered, including the type of aluminum and its profiles, the thickness of the weldment, the product structure design, and the welding performance requirements.

# 1 Characteristics and application scope of common welding methods for aluminum profiles

NO.	Welding methods	Characteristics	Application scope
1	Gas welding	Low thermal power, large deformation of weldment, low productivity, easy to produce defects such as slag inclusion and cracks	Applicable to thin plate butt welding and repair welding in non-important occasions
2	Manual arc welding	General joint quality	Mainly used for repair welding and general repair of cast aluminum parts
3	Tungsten inert gas arc welding	The weld metal is dense, the joint strength is high, the plasticity is good, and high-quality joints can be obtained	Widely used, it can weld aluminum profiles with a thickness of 1 to 20 mm
4	Tungsten inert gas pulse welding	Stable welding process, precise and adjustable heat input, small deformation of weldment, high joint quality	Especially suitable for thin plates, all-position welding, and high-strength aluminum profiles such as forged aluminum and hard aluminum Welding of gold
5	Melting electrode argon arc welding	High arc power and fast welding speed	Suitable for welding thick parts, the weldable thickness is less than 50mm
6	Melting electrode pulse argon arc welding	Small welding deformation, good resistance to pores and cracks, and wide adjustment of process parameters	Commonly used for thin plates or all-position welding, the workpiece thickness is 2-12mm
7	Plasma arc welding	Heat concentration, fast welding speed, small welding deformation and stress, but the process is more complicated	Suitable for butt welding with higher requirements than argon arc welding
8	Vacuum electron beam welding	High penetration depth, small heat-affected zone, small welding deformation, and good joint mechanical properties	Suitable for welding smaller weldments
9	Laser welding	Small welding deformation and high productivity	Especially suitable for precision welding