公开(公告)号：US12091733B2

公开(公告)日：2024-09-17

申请号：US18142152

申请日：2023-05-02

Applicant: INSTITUTE OF METAL RESEARCH CHINESE ACADEMY OF SCIENCES

Inventor： Dianzhong Li ,  Yikun Luan ,  Hongwei Liu ,  Paixian Fu ,  Xiaoqiang Hu ,  Pei Wang ,  Lijun Xia ,  Chaoyun Yang ,  Hanghang Liu ,  Yang Liu ,  Peng Liu ,  Yiyi Li

IPC: C22C38/00 ,  C21C7/00 ,  C21C7/04 ,  C21C7/06 ,  C22C33/04

CPC classification number: C22C38/005 ,  C21C7/0006 ,  C21C7/04 ,  C21C7/06 ,  C22C33/04 ,  C22C38/004

Abstract: A control process of inclusions in ultra-clean rare earth steel, wherein the content of rare earth elements REM in the ultra-clean rare earth steel, the total oxygen content T[O]m, the total sulfur content T[S]m in the steel, and the total oxygen content T[O]r in a rare earth metal or alloy added to the steel are controlled to satisfy the following formula: −500