Oxygen Quenching Behavior
Oxygen quenching behavior describes how oxygen atoms are bound or released on the metal surface during the welding process. This affects the cooling and structure of the weld.
Physical-Chemical Mechanism of Action
Oxygen quench behavior refers to the exchange of oxygen atoms between the metal and its surroundings. During welding, oxygen is bound, which protects the surface and prevents porosity. After quenching, the process releases oxygen again, which affects the microstructure.
Metallurgical Relevance & Risks in Welding
Too high an oxygen content can lead to embrittlement and hot cracking. Too low an oxygen content increases susceptibility to corrosion and coarsens the grain, which reduces the toughness of the steel.
Workshop Practice & Action Guidelines
Make sure the weld pool is well shielded from oxygen. Use deoxidizers like silicon or titanium steel. If oxygen is lacking, you can accelerate cooling to avoid porosity. Check the oxygen content regularly and adjust the welding parameters accordingly.