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Where can I get aluminium welding?

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Aluminum welding with MIG (Metal Inert Gas) is quite different from welding steel. Many people may think, “I can weld, so I should be able to do this too,” and then end up disappointed.

Firstly, there are various aluminum alloys with different melting points, requiring different filler materials. Since the filler wire is aluminum, some wires are very flexible and prone to curling. A push-pull system is used to prevent the filler wire from getting tangled with the welding equipment hoses.

Secondly, the oxide layer on aluminum, which prevents further oxidation, adds complexity to aluminum welding. This oxide layer has a higher melting point and is heavier than aluminum itself. When welding, you need higher power initially to burn through this oxide, and then you must be careful not to melt away the aluminum and create holes in the product.

Thirdly, aluminum must be clean and free of grease. If it is not, hydrogen is released during the combustion of impurities in the arc, leading to porosity, which results in welds that do not meet the required standards.

Fourthly, differences in wall thickness can lead to varying heat dissipation, causing insufficient penetration and potential joint defects.

Finally, since aluminum conducts heat very effectively, it is prone to cracking during cooling after the welding process. The weld termination point is crucial in this regard. If not controlled properly, a weak point may be created, which can easily lead to shrinkage cracks.

Welding aluminum, therefore, requires careful attention to these factors. However, with the right knowledge and equipment, it is entirely possible to achieve high-quality aluminum welds.

For various welding projects, you can rely on Aluminized. We have all the expertise, techniques, and experience in aluminum and aluminum welding. Together with you, we will determine the best welding technique to be applied.

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