Title:
SMELTING AND CONTINUOUS CASTING METHOD FOR HIGH-CR-SI ALLOYED HOT-FORMED STEEL
Document Type and Number:
WIPO Patent Application WO/2023/093112
Kind Code:
A1
Abstract:
A smelting and continuous casting method for a high-Cr-Si alloyed hot-formed steel. During the smelting process, deoxidation and primary alloying are carried out during converter tapping to finish the complete alloying of Al and partial alloying of Si, Mn and Cr; and during the LF refining process, a silicon alloy, a manganese alloy and a chromium alloy are added for secondary alloying to finish the alloying of the remaining Si, Mn and Cr elements; and when continuous casting is carried out after smelting, low-alkalinity protective slag is used. The method aims at the problem of a relatively large addition amount of silicon, manganese and chromium alloys required by a steel, and by rationally matching two modes of adding a steel ladle alloy and adding an LF furnace alloy during converter steelmaking, the alloy components for a coating-free hot-formed steel are accurately controlled; and during the continuous casting process, the low-alkalinity protective slag having uniform heat transfer and a good lubricating property is used, such that the problems of air gaps being easy to form and an uneven blank shell in the steel are solved.
Inventors:
XU WEI (CN)
WANG LUNING (CN)
WANG FEI (CN)
HU JUN (CN)
YANG DECAO (CN)
WANG LINGYU (CN)
WANG LUNING (CN)
WANG FEI (CN)
HU JUN (CN)
YANG DECAO (CN)
WANG LINGYU (CN)
Application Number:
PCT/CN2022/109343
Publication Date:
June 01, 2023
Filing Date:
August 01, 2022
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
BENGANG STEEL PLATES CO LTD (CN)
BENGANG STEEL PLATES CO LTD (CN)
International Classes:
C22C38/20; B22D11/111; C22C38/24; C22C38/26
Foreign References:
| CN114032473A | 2022-02-11 | |||
| CN108486456A | 2018-09-04 | |||
| CN102453831A | 2012-05-16 | |||
| CN112708720A | 2021-04-27 | |||
| CN104531939A | 2015-04-22 | |||
| CN104313234A | 2015-01-28 | |||
| CN107012287A | 2017-08-04 | |||
| CN102864275A | 2013-01-09 | |||
| CN103642967A | 2014-03-19 | |||
| US5085691A | 1992-02-04 | |||
| JP2016188401A | 2016-11-04 |
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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