Refining
Defect generation in cast iron has much to do with compound of metals in molten metal, and the key for improved quality is affected by how much compound of metals is reduced.
KS furnace refines compound of metals using resected off-scourings as crude material. While the refining furnace re-refines the molten metal by the disposal with arc slag and removes the compound of metals after using common high-frequency furnace.
This method overcames the constraint of raw materials because we can use regular pig, scrapped, and any kinds of iron as the materials.

Mn Removal
Economic organizations have emphasized environmental consciousness, and the weight saving of heavy goods has been conspired in our field. Use rates of high-strength steel, which contains a lot of manganese(Mn), have increased in automobile component. Those scraps are used as the raw material of cast iron, but Mn in cast iron causes a serious problem in terms of toughness and stretch when the auto parts are produced. For this reason, lowering metallic impurities of raw materials is unavoidable. To fix the problem, we developed the refining furnace and Mn removal system.