Geschmiedete Rolle zum Walzen von nahtlosen Stahlrohren und Herstellungsverfahren

摘要

A forged roll for rolling a seamless steel pipe, having excellent biting properties and wear resistance, and manufacturing method. The forged roll comprises a high carbon alloy cast steel comprising about 1.10 - 1.85wt% carbon, about 0.3 - 1.2wt% silicon, about 0.4 - 1.5wt% manganese, about 0.5 - 2.0wt% nickel, about 0.5 - 2.0wt% chromium and iron. Heat treatment for spheroidal carbide formation is performed so that the spheroidal carbide covers about 35 - 55% of the area of the roll metallurgical structure.