1.Molybdenum electrode is high melting point material, its melting point is 3400 ℃, under high temperature condition, it has strong electron emission ability , and tungsten electrode has a lot of current-carrying capacity.
2.Molybdenum electrode has smooth surface, better concentricity and stable welding arc, the welding pool can be maintained well, the weld joint forming is good and the welding quality is good.
3.If the surface of molybdenum electrode is burnt out or there is pollutants, crack, shrinkage cavity, the arc is instability, arc has drift phenomenon, the weld depth is shallow, and the quality of welding is poor.
4.The diameter size of molybdenum electrode is decided by the material thickness, material properties, current and joint form.