Title:
MAGNESIUM-CONTAINING STEEL 45 AND PREPARATION PROCESS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/056792
Kind Code:
A1
Abstract:
Disclosed in the present invention are magnesium-containing steel 45 and a preparation process therefor. The present invention relates to the technical field of steel production. The steel 45 comprises the following chemical components, in percentages by mass: 0.45-0.48% of C, 0.17-0.37% of Si, 0.65-0.80% of Mn, P≤0.035%, S≤0.035%, 0.0005-0.0020% of Mg, and the balance of iron and inevitable impurities. On the basis of ensuring the safe production of the steel 45, inclusions in the steel are modified by means of feeding a magnesium-silicon cored wire into molten steel at the final stage of refining, such that the inclusions in the steel are converted into fine and dispersively distributed sulfide-oxide composite inclusions, the rating of the inclusions is optimized, and the comprehensive mechanical property of the steel 45 is improved.
Inventors:
ZHOU LEI (CN)
FU JIANXUN (CN)
DENG WEI (CN)
LIU LEI (CN)
ZHAO JUN (CN)
LI LIN (CN)
FU JIANXUN (CN)
DENG WEI (CN)
LIU LEI (CN)
ZHAO JUN (CN)
LI LIN (CN)
Application Number:
PCT/CN2022/114324
Publication Date:
April 13, 2023
Filing Date:
August 23, 2022
Export Citation:
Assignee:
NANJING IRON & STEEL CO LTD (CN)
International Classes:
C22C38/02; B21B1/00; B21B37/74; B22D11/18; C21C7/00; C21C7/06; C21C7/064; C21C7/10; C22C33/06; C22C38/04
Foreign References:
| CN113957338A | 2022-01-21 | |||
| SU500285A1 | 1976-01-25 | |||
| CN112575242A | 2021-03-30 | |||
| CN112063916A | 2020-12-11 | |||
| CN113025915A | 2021-06-25 |
Attorney, Agent or Firm:
NANJING LI&FENG INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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