Oxygen is used to produce hot flame which is used in welding purpose
Acetylene is commonly used in welding with oxygen to create a high-temperature flame for cutting and welding metal.
The gases commonly used in welding are oxygen, acetylene, argon, and carbon dioxide. These gases play different roles in the welding process, such as providing heat, shielding the weld from atmospheric contamination, and facilitating the arc.
You answered your own question. Oxygen and Acetylene. Other mixes are now used in place of Acetylene so the process is now called Oxy-Fuel.
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.
Common substances used in fuels for welding include acetylene, propane, natural gas, and hydrogen. These fuels are used in conjunction with oxygen to create the high temperature flame needed for welding processes.
Acetylene is commonly used in welding with oxygen to create a high-temperature flame for cutting and welding metal.
It could, though medical-grade oxygen is significantly more expensive than welding-grade oxygen so I'm not sure why you would want to do this.
oxygen and acetylene gas Argon gas is used in MIG and TIG welding
Oxygen is an atmospheric gas that is unwanted in almost all welding processes because in it's molten state, metal oxidizes very easily and causes a weak joint. Weld surfaces are protected during the welding process to keep oxygen from contaminating the weld either by a shielding gas, flux, or in torch welding, the torches own exhaust. Occasionally however, oxygen may be added to the shielding gas mix in small amounts to stabilize the arc and reduce undercutting.
Gas welding/soldering/brazing
The gases commonly used in welding are oxygen, acetylene, argon, and carbon dioxide. These gases play different roles in the welding process, such as providing heat, shielding the weld from atmospheric contamination, and facilitating the arc.
You answered your own question. Oxygen and Acetylene. Other mixes are now used in place of Acetylene so the process is now called Oxy-Fuel.
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.
Common substances used in fuels for welding include acetylene, propane, natural gas, and hydrogen. These fuels are used in conjunction with oxygen to create the high temperature flame needed for welding processes.
The reaction is called oxyacetylene combustion. It involves the burning of acetylene gas (C2H2) and oxygen (O2) to produce a high-temperature flame used for welding and cutting metals. The reaction forms carbon dioxide (CO2) and water vapor (H2O) as byproducts.
Oxygen is used in welding, by the deep sea divers and is also used in hospitals to patients with breathing difficulties.
Oxygen is used as active gas during MIG welding, spray transfer. It increases penetration and travel speeds. It is used only is small amounts though ususally 1%-5%. +++ The question mentioned "gas" welding, not any form of electric-arc process, and in oxy-acetylene and oxy-hydrogen welding the oxygen is necessary to raise the fuel-burning temperature to above the melting-point of steel.