This type of electrical power is wanted for the big output current that spot welding requires.
Spot welding aluminum sheet metal.
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In this video lazze shows how you can spot weld aluminum with a standard 220 volt spot welder that is probably already in your shop.
Aluminum spot welding is becoming more common as aluminum replaces steel in many applications where weight is main such as automobiles.
Welding aluminum requires a thorough understanding of the tig welding process and also requires a tig torch.
The more time the arc is in an area the hotter it.
Typical aluminum alloys for sheet fabrication are 3003 and 5052.
It s also easy to do with a spot welding machine which has 2 electrode tongs about 6 inches 15 cm long that pass an electrical current through the metal to fuse them together.
For commercial quality welds on 1 2mm mill finished sheets weld settings are typically in the region of.
Use three phase electrical energy to spot weld aluminum.
It requires a lot of experience patience and skill to get the desired results.
Tig welding is an advanced technique that involves the use of both hands in a slow and controlled manner.
The standard bs en iso 18595 resistance welding spot welding of aluminium and aluminium alloys weldability welding and testing provides useful guidelines.
When welding sheet metal the main thing to look out is to prevent warping and burn through.
Techniques for welding sheet metal.
Filler metals for either of these would be 4043 or 4943.
A 5356 filler metal also works for 5052 materials specifically.
To prevent burn through and warping don t whip or weave the torch.
We all know that welding is cool to watch with special shields or goggles on of course and welds have a nice surface finish once they are ground and polished.
The high quality finish and verstaile nature make it a common choice for welding aluminum and other metals.