Title:
CONTROL METHOD FOR MEDIUM-CARBON HIGH-MANGANESE VANADIUM-CONTAINING ALLOY STRUCTURAL ROUND STEEL MATERIAL STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2023/060877
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of metallurgy, and specifically relates to a control method for a medium-carbon high-manganese vanadium-containing alloy structural round steel material structure. In a continuous casting process, a low superheat degree and slow pulling speed pouring are used, a pulse magnetic oscillation solidification homogenization technology is used, and in addition, a large electromagnetic stirring current is used for smashing dendritic crystals, so as to increase a nucleation core of the dendritic crystals, expand an isometric crystal area and reduce a columnar crystal area, and therefore casting blank segregation is reduced, wherein the electromagnetic stirring current of a crystallizer is 350 A, and the electromagnetic stirring current at the end is 450 A. In a rolling process, a high-temperature long-time diffusion heating process is used, and a controlled rolling and controlled cooling process is used. The resulting medium-carbon high-manganese vanadium-containing alloy structural round steel material has a uniform structure, and the proportion in area of a heat affected zone (abnormal structure) after user friction welding machining is reduced to 5% or below, which reaches the international advanced level.
Inventors:
DENG XIANGYANG (CN)
LI SHICHAO (CN)
XIE YOU (CN)
SHEN YAN (CN)
LIN JUN (CN)
LI SHICHAO (CN)
XIE YOU (CN)
SHEN YAN (CN)
LIN JUN (CN)
Application Number:
PCT/CN2022/089785
Publication Date:
April 20, 2023
Filing Date:
April 28, 2022
Export Citation:
Assignee:
ZENITH STEEL GROUP CO LTD (CN)
CHANGZHOU ZENITH SPECIAL STEEL CO LTD (CN)
CHANGZHOU ZENITH SPECIAL STEEL CO LTD (CN)
International Classes:
C22C38/02; B22D11/115; B22D11/16; C21D8/06; C22C38/04; C22C38/06; C22C38/20; C22C38/22; C22C38/24; C22C38/42; C22C38/44; C22C38/46
Foreign References:
| CN113957340A | 2022-01-21 | |||
| CN109158558A | 2019-01-08 | |||
| CN112708829A | 2021-04-27 | |||
| CN110508763A | 2019-11-29 | |||
| CN110512140A | 2019-11-29 | |||
| CN113084110A | 2021-07-09 | |||
| CN104178698A | 2014-12-03 | |||
| JP2009127112A | 2009-06-11 | |||
| JP2007160363A | 2007-06-28 |
Attorney, Agent or Firm:
CHANGZHOU INNOVATION PATENT AGENCY (CN)
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