①  Different welding methods

1, carbon dioxide gas welding: the use of carbon dioxide as a protective gas welding.

2. Carbon dioxide mixture welding: carbon dioxide is mixed with argon.

Mixture protection welding

②  The effect is different

1, carbon dioxide gas welding: due to the special impact of carbon dioxide gas thermal physical properties, the use of conventional welding power supply, welding wire end melting metal is impossible to form a balance of free axial transition, usually need to use short circuit and droplet neck burst. Therefore, compared with the FREE transition of MIG welding, splash is more.

2, carbon dioxide welding mixture: using argon protection of metal welding materials, through high current on the welding backing weld material melt into a liquid pool formation, cause the weld metal and weld material metallurgy combined with a kind of welding technology, due to the continuously in high temperature melting welding on argon gas, make the weld material can not contact with oxygen in the air, to prevent the oxidation of weld material.

③  Different uses

1. Carbon dioxide gas welding: The welding method has become one of the most important welding methods for ferrous metal materials.

2, carbon dioxide mixed gas welding: suitable for welding easily oxidized nonferrous metals and alloy steel (mainly Al, Mg, Ti and their alloys and stainless steel welding); Suitable for single side welding and double side forming, such as backing welding and pipe welding; Argon tungsten-arc welding is also suitable for sheet welding.