electric furnace process, namely, electric furnace, refining outside the furnace, continuous casting or die casting, rolling;
converter process, namely, the blast furnace, hot metal pretreatment, converter refining outside the furnace, continuous casting - rolling;
special smelting method, namely vacuum induction furnace (VIM), electroslag remelting (ESR) - rolling or forging.
A typical bearing steel production process
Swedish SKF: 100 t EF - ASEA - SKF - IC, production ? 12-90-32 mm rod wire, diameter 200 mm and 55-110 - mm diameter steel pipe;
Japanese sanyo: scrap preheating, EF (partial bottom steel) - 90 t LF, RH, CC (vertical flow 3, 370 mm * 470 mm) or IC - hot rolled (material) and cold rolling. Production ? 102-600 - mm rod, such as diameter of 50-180 - mm hot rolled steel tubes, 22-95 - mm cold rolled steel pipe diameter;
Japan datong: scrap preheating -- teaf, LF, RH - 90 CC (370 mm * 480 mm) ?