Heating with an oxidizing flame oxidizes the metal.
Increasing the air supply to the burner produces an oxidizing flame.
還元炎 is a reducing flame with insufficient oxygen, opposite to 酸化炎.
Standard kanji spelling for this chemistry term.
Variant using the older kanji 焔 for 'flame'; less common in modern usage.
Compound of 酸化 (oxidation) and 炎 (flame).