Low sulfur in gray cast iron molten metal is harmful: poor孕育 effect, poor graphite morphology, and poor cutting performance.
Suitable Range: 0.06%-0.12%Within this scope,Sulfur shortens the length of graphite.End dullnessForm deviationEnhanced mechanical properties.When sulfur content is less than 0.06%At present,Absolutely must undergo desulfurization treatment..
Through metallographic analysis, sulfur in the iron melt exists in a special form, hence it is crucial to use an additive sulfur when increasing sulfur content. Avoid using sulfuric acid or other sulfur-containing minerals, as this can significantly damage the internal structure of the casting!

Instructions for Use: During electric furnace production,Add a small amount of iron to the electric furnace.By sulfur demand, particle size 10-50mmThe sulfur additive is added to the furnace.Further iron is added to press the sulfur additive onto.Process melting.Absorption rate: 99%Above.
For ductile iron, an excessively low sulfur content in the pig iron (less than 0.008%) is also detrimental. A normal range of 0.010%-0.014% is preferable. Even so, for electric furnace melting, sulfur-oxygen孕育剂 should be used within this range to add a trace amount of sulfur and enhance the liquidity of the iron melt.