ALUMINIUM ALLOY WELDING

ALUMINIUM ALLOY WELDING

Aluminum alloy welding refers to the welding process of aluminum alloy materials. Aluminum alloy has high strength and light weight. The main welding processes are manual TIG welding (non-melting inert gas shielded welding), automatic TIG welding and MIG welding (melting polar inert gas shielded welding), the base material, welding wire, shielding gas, and welding equipment.

Aluminum fence processing 1

Aluminum fence processing 2

Brief instruction

Aluminum and aluminum alloy occupies a pivotal position in the various materials used in modern engineering technology. Its annual output in the world is second only to steel, and it ranks first in non-ferrous metals. [1] If aluminum alloy first emerged in the aviation industry, in recent decades, in addition to the aviation industry, aluminum and aluminum have been widely used in aerospace, automobiles, ships, bridges, machinery manufacturing, electrical engineering, chemical industries, and cryogenic devices. Alloy to manufacture various parts, fuel tanks, corrosion-resistant containers and wires. At present, the most widely used aluminum alloy welding structure is rust-proof aluminum alloy, namely aluminum-magnesium alloy and aluminum-manganese alloy.

Finished aluminum welded  fence

Aluminum alloy welding refers to the welding process of aluminum alloy materials. Aluminum alloy has high strength and light weight. The main welding process is manual MIG welding (Melting Inert Gas Shielded Welding) and automatic MIG welding, the base material, welding wire, shielding gas, and welding equipment.

The main chemical composition of base metal and welding wire:

Aluminum alloy welding method

1. TIG/GTAW welding

The GTAW welding method is mainly used for aluminum alloys and is a better welding method. However, the argon tungsten arc welding equipment is more complicated and is not suitable for operation in open air.

2. Resistance welding

This welding method can be used to weld thin aluminum alloy plates with a thickness of less than 5mm. However, the equipment used in welding is more complicated, the welding current is large, and the productivity is high, which is especially suitable for mass production of parts and components.

3. Pulse TIG welding

Pulsed TIG welding can well improve the stability during the welding process. Parameters can be adjusted to control the arc power and weld shape. The weldment has small deformation and small heat-affected zone. It is especially suitable for welding of thin plates, all-position welding and other occasions, as well as forged aluminum, duralumin, super-hard aluminum, etc., which are highly sensitive to heat.

4. Friction stir welding

Friction stir welding is firstly and mainly used in the field of light metal structures such as aluminum alloys and magnesium alloys. The biggest feature of this method is that the welding temperature is lower than the melting point of the material, which can avoid cracks and pores caused by fusion welding. defect.

Environmental of welding

Requirements for the storage environment and auxiliary materials used in aluminum alloy welding production

(1) Requirements for production and stor

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