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CO2 welding is a welding process that uses carbon dioxide to protect the weld pool from oxidisation during the welding process.

It is also known as Metal Inert Gas(MIG), Manual Arc Gas Shielded(MAGS), welding.

CO2 is not the only gas used, it needs to be heavier than air to work.

The weld pool is, a pool of weld or liquid/molten metal that solidifies as one when finished welding, it is usually between two items so as to fuse the pieces together.

CO2 welding uses a long coil of filler wire that is fed in through the handheld torch, this filler wire melts as it completes the electrical circuit by means of an electric arc which reaches temperature of around 3100 degrees Celsius, and unsurprisingly this melts the metal.

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Q: What is CO2 welding?
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