Discuss two ways to reduce oxygen and nitrogen entrapment du

Discuss two ways to reduce oxygen and nitrogen entrapment during welding, are give two example welding processes that use each method.

Solution

air entrapped within the porous flux particles represents the most important source of nitrogen contamination in SAW.flux decomposition and/or flux entrapment within the arc column must be considered as major sources of
oxygen contamination at the droplet and weld pool stages.

entrapment of these two gases also occurs from poor shielding gas.

These problem can be solved by using adequate flow rate of gases in TIG/GMAW welding welding and prehating the fluxes to release the moisture