PURPOSE: To produce simply and easily a low-carbon alloy iron at a low cost by electrolyzing the melt of a high or medium carbon alloy iron as cathode and a molten flux of alkaline earth metal salts added thereto as anode.
CONSTITUTION: A molten flux 3 consisting of ≥1 kinds among alkaline earth metal salts of Ca, Ba, Mg, etc. is added to a ladle 1 contg. the melt 2 of a high carbon or medium carbon alloy iron right after smelting in an electric furnace or the like, and cathode 4 made of pure iron is immersed in said melt 2 and an anode 5 made of artificial graphite into the flux 3, then a DC voltage is applied thereto, whereby the low-carbon alloy iron is easily manufactured. Ferromanganese, silicon manganese, etc. are used as the above-mentioned alloy iron, and CaO, CaCl2, BaCl2, BaF2, MgO, MgCl2, etc. are used as the flux. The metallic Ca, Ba, Mg, etc. reduced and formed from these salts form carbides with C in the melt and the carbides migrates into the flux, whereby the alloy iron is decarburized.
OKU KOUICHI
UOTANI SUSUMU
FUJINUMA TATSUHIKO
SASAKI TOSHIAKI
SAKAI NAGAHARU
