1981 Volume 67 Issue 8 Pages 1331-1337
Since November 1978, a ladle refining furnace with 100 t capacity has been operating at Sendai Works of Azuma Steel Corp. Through the EF-LF-Bloom CC process, high quality rod and wire for cold-drawing, cold-heading, heat-treatment or machining have been produced successfully instead of using the conventional ingot casting process. The process is very effective for deoxidation, desulfurization, lowering of inclusion content and precise control of chemical composition and temperature.
Application of Ar-sealing, electromagnetic stirrer and super heat control technique to the large section and bending radius CC machine, combined with EF-LF process, gives clean, good-surface and homogeneous steel. EF-LF-all CC process gives a higher alloy yield, productivity and a lower cost (electricpower. electrode, refractories and fuel), compared with the conventional EF-CC process.