Title:
THERMAL PROCESSING METHOD FOR NIOBIUM-CONTAINING HIGH-ALLOY AUSTENITIC HEAT-RESISTANT STAINLESS STEEL BAR
Document Type and Number:
WIPO Patent Application WO/2023/284391
Kind Code:
A1
Abstract:
Disclosed is a processing method for a stainless steel bar, comprising: (1) heating a steel ingot at a heating temperature of 1200°C - 1270°C; (2) using a total compression ratio greater than 3, forging a blank to obtain a square billet; (3) heating the square billet at a heating temperature of 1200°C - 1270°C; (4) performing hot rolling to obtain a bar. The processing method of the present invention uses an optimized process flow and the control of key process parameters to ensure production efficiency and to avoid the quality defect of surface cracks during production, thus achieving the preparation of a niobium-containing high-alloy austenitic heat-resistant stainless steel bar with good surface quality and structure.
Inventors:
FANG XUDONG (CN)
LI YANG (CN)
XU FANGHONG (CN)
XIA YAN (CN)
ZHANG WEI (CN)
ZHAO JIANWEI (CN)
LI YANG (CN)
XU FANGHONG (CN)
XIA YAN (CN)
ZHANG WEI (CN)
ZHAO JIANWEI (CN)
Application Number:
PCT/CN2022/092122
Publication Date:
January 19, 2023
Filing Date:
May 11, 2022
Export Citation:
Assignee:
SHANXI TAIGANG STAINLESS STEEL CO LTD (CN)
International Classes:
B21C37/04; B21B1/16; B21J5/00; C22C38/48; C22C38/58
Foreign References:
| CN113523012A | 2021-10-22 | |||
| CN103741065A | 2014-04-23 | |||
| CN106623711A | 2017-05-10 | |||
| CN102994905A | 2013-03-27 | |||
| CN108220783A | 2018-06-29 | |||
| CN105648360A | 2016-06-08 | |||
| JP2003183782A | 2003-07-03 |
Attorney, Agent or Firm:
HYLANDS LAW FIRM (CN)
Download PDF:
Previous Patent: ULTRASONIC MEDICAL DEVICE
Next Patent: MEDICAL ENVIRONMENT LOGISTICS SUPPORT MONITORING SYSTEM
Next Patent: MEDICAL ENVIRONMENT LOGISTICS SUPPORT MONITORING SYSTEM