公开(公告)号：US20240316622A1

公开(公告)日：2024-09-26

申请号：US18736509

申请日：2024-06-06

申请人： ARCELORMITTAL INVESTIGACIÓN DESARROLLO, S.L.

发明人： Mathieu BRANDT ,  Jean-Paul FISCHBACH ,  Paul NAVEAU

IPC分类号： B22D11/11 ,  B22D11/04 ,  B22D11/103 ,  B22D11/108 ,  B22D41/58

CPC分类号： B22D11/11 ,  B22D11/103 ,  B22D11/108 ,  B22D41/58 ,  B22D11/04

摘要： A continuous casting process of a steel semi-product is provided. The process includes a step of casting using a hollow jet nozzle located between a tundish and a continuous casting mould. The nozzle includes, in its upper part, a dome for deflecting the liquid metal arriving at the inlet of the nozzle towards the internal wall of the nozzle, defining an internal volume with no liquid metal. A simultaneous step of injecting powder through a hole of the dome occurs. The powder has a particle size of 200 μm or less. The dome includes a first device to inject the powder without any contact with the dome and a second device to avoid sticking or sintering of the powder onto the first device.