Title:
HIGH-STRENGTH STAINLESS STEEL ROTOR AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/219056
Kind Code:
A1
Abstract:
The present invention relates to a high-strength stainless steel rotor and a preparation method therefor, which belong to the technical field of the hot processing of metal materials, and solve the problems of rotors in the prior art, such as low strength, a short service life, the large amount of waste of raw materials of the cutting process created during forging, and high costs. The preparation method comprises: providing a rotor stainless steel blank, carrying out first heating for the rotor stainless steel blank, carrying out free forging, and carrying out first annealing and a surface treatment after the free forging to obtain a forged blank; carrying out second heating, carrying out die forging after the second heating, and carrying out a second annealing treatment and a solid solution treatment after the die forging to obtain a forged piece; and finally, carrying out rough machining, aging treatment and finish machining on the forged piece to obtain a high-strength stainless steel rotor. By using the preparation method of the present invention, a rotor with a high strength and an excellent fatigue resistance is obtained, and the production costs incurred during the rotor preparation process are reduced.
Inventors:
LIU ZHENBAO (CN)
LIANG JIANXIONG (CN)
WANG XIAOHUI (CN)
SUN YONGQING (CN)
WANG CHANGJUN (CN)
YANG ZHIYONG (CN)
LIANG JIANXIONG (CN)
WANG XIAOHUI (CN)
SUN YONGQING (CN)
WANG CHANGJUN (CN)
YANG ZHIYONG (CN)
Application Number:
PCT/CN2021/090831
Publication Date:
November 04, 2021
Filing Date:
April 29, 2021
Export Citation:
Assignee:
CENTRAL IRON AND STEEL RES INSTITUTE (CN)
International Classes:
C22C38/42; B21J5/00; B21J5/02; C21D9/00; C22C38/02; C22C38/04; C22C38/44; C22C38/46; C22C38/48; G01C19/06
Domestic Patent References:
| WO2010067878A1 | 2010-06-17 |
Foreign References:
| CN111471940A | 2020-07-31 | |||
| CN106544600A | 2017-03-29 |
Other References:
LUO HENGJUN, XIE JING, CHENG JIN, CHENG LIWEI XIAO, KAI: "Trail Manufacture of 15-5PH Precipitation Hardened Stainless Steel Die Forging ", HEAVY CASTINGS AND FORGINGS, no. 2, 25 March 2014 (2014-03-25), pages 33 - 34, XP055863041, DOI: 10.14147/j.cnki.51-1396/tg.2014.02.006
Attorney, Agent or Firm:
BEIJING FINELAND IP FIRM (CN)
Download PDF: