CO ₂ gas shielded arc welding

This procedure was primarily unalloyed and low alloyed structural steels used for pooling. The problem of CO ₂ shielding gas is applied to the CO ₂ gas, carbon monoxide and oxygen, decomposes, and therefore must expect significant oxidation. Elektródahuzalba thus killing the elements (manganese and silicon) should be combined.

The shielding gas flow conditions can allow the entry of air is calm, a few m / s wind flow speed and blow away the shielding gas, welding, therefore, must be protected.

In some experiments, the researchers Gáz mixed CO _2-oxygen alloy steels can be beneficial to the loss despite an increase in burnout, because the larger surface salakmennyiség better results, increasing the penetration depth and the performance, reduces spatter loss, reduce nitrogen and hydrogen content of the weld , reduces the tendency of the weld melegrepedési.