Your question is incomplete. Which process? Which electrode? What is the basemetal, which position? etc etc
For steel, flux core or hard wire with Argon/CO2 is used with the GMAW process.
CO2 and O2 can not be used in the same time for shielding gas in MIG welding, it would create too much oxidation of the molten metal.
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.
Inert gases are use for welding is because in the welding process, the heat will actually hasten up the process of oxidation(rusting) happening on metals. Oxidation process(rusting) requires oxygen, thus, by using inert gas, it will purge the surrounding of oxygen preventing the oxidation process from happening.
The thickness of the laser welding machine depends on the power of the laser generator inside the Laser Welding Machine, the thickness of the object to be welded. These two points are the most important.
For steel, flux core or hard wire with Argon/CO2 is used with the GMAW process.
CO2 and O2 can not be used in the same time for shielding gas in MIG welding, it would create too much oxidation of the molten metal.
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.
It is arc welding process using a spool of wire that is fed to the material by an electric motor. Different from shielded metal arc welding which uses consumable welding electrodes with a covering of flux to assist and protect the weld. The MIG uses an inert gas (IG) to keep impurities from the welding point. The technical term for MIG is GMAW (gas metal arc welding), this is because most of the time an inert gas is not used, a mixed gas is more likely. Ex. 90-10 Ar-CO2
Oxygen and acetylene for flame welding. Argon for Tig welding CO2 for MIG welding steels Argon for MIG welding aluminum TRI-mix for robotic mig of steels. And helium is added for some overhead welding.
When MIG welding STEEL a mixture of Argon -- CO2 is used. 75% - 25%
Photosynthesis
It depends on what welding process is being used and what type of metal is being welded. When Oxy-Fuel Welding, Acetylene is the most popular. MAPP gas and Propane are also used. With the GMAW (MIG) process Argon, CO2 and Oxygen gasses, in mixtures or alone, are used. GTAW (TIG) gasses are almost always Argon and/or Helium. This is not all inclusive as new processes are being developed every day. Check with your welding material supplier for relevant info.
For example argon or helium for TIG welding. Oxi-fuel welding: oxygen and a combustible gas: acetylene, propane, butane, propylene, gasoline, hydrogen, etc.
Yes, it is possible to weld mild steel using only CO2 gas as the shielding gas. CO2 can provide sufficient protection to prevent oxidation during the welding process. However, the quality of the weld may be lower compared to using a mixture of CO2 and argon, which can provide better weld bead appearance and reduced spatter.
On steel a mixture of Argon and CO2 usually 75% to 25%
Photosynthesis is a process that removes co2 from the atmosphere.