Patent ID: 7967056
Filing Date: 2011-06-28
Classification: B21B

Abstract:
1. A process for manufacturing steel long products from a continuous casting step of blooms/billets having a thickness comprised between 120 and 400 mm and a mass flow, wherein a mass flow is a quantity of steel flowing in a time unit, corresponding to a speed at an outlet of the continuous casting step of >3 m/min, this step including a liquid core reduction followed directly by an induction heating step, without interruptions until the end of a rolling step in a plurality of rolling stands, wherein when entering the rolling step an average temperature of a product is higher than a surface temperature and a difference between a temperature in a core or middle inner region and the surface temperature, which is of about 1200° C., is of at least 100° C., wherein at least an additional induction heating step is provided, intermediate between at least two of the plurality of rolling stands.