Title:
低炭素窒素含有のオーステナイト系ステンレス鋼棒の製造方法
Document Type and Number:
Japanese Patent JP7471520
Kind Code:
B2
Abstract:
The present invention discloses a method for manufacturing a low-carbon nitrogen-containing austenitic stainless steel bar, which sequentially includes the following steps: smelting, electroslag remelting and forging; in the electroslag remelting process, the steel ingot obtained in the smelting process is used as an electrode bar of an electroslag furnace, remelting with specific slag and crystallizing; in the forging process, forging the crystallized steel ingot into a material by a specific forging method; the specific slag comprises CaF2 (65-70%), Al2O3 (15-20%), CaO (5-10%) and MgO (2-5%) in percentage by weight; specific forging methods include upsetting-and-drawing and radial forging, wherein the upsetting-and-drawing includes: a pass deformation is less than 35%, a pass reduction is 50-80 mm, a pass heating temperature is 1130-1150 °C, and a pass deformation method is ellipse-ellipse-circle. The method can obtain the low-carbon high-strength nitrogen-containing austenitic stainless steel with uniformly distributed chemical composition and tissues, high purity and high strength.
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Inventors:
Dong Xiaoliang
Zhang Xiuli
Shurishin
Leo Hua
Wang Xianhua
Xu Guangpeng
Xu Ho
Sun Guohiro
Lee Zoyu
Zhang army
Ruan building
Zhang Xiuli
Shurishin
Leo Hua
Wang Xianhua
Xu Guangpeng
Xu Ho
Sun Guohiro
Lee Zoyu
Zhang army
Ruan building
Application Number:
JP2023523256A
Publication Date:
April 19, 2024
Filing Date:
December 08, 2022
Export Citation:
Assignee:
DAYE SPECIAL STEEL CO., LTD.
International Classes:
C22B9/18; B21C1/00; B21J5/00; B21J5/06; B21J5/08; C21D8/06; C22B9/187; C22C33/04; C22C38/00; C22C38/58
Domestic Patent References:
| JP11140553A |
Foreign References:
| CN109280778A | ||||
| CN108342587A |
Attorney, Agent or Firm:
Koji Murai
Takayuki Ishikawa
Takayuki Ishikawa