Title:
HIGH-PLASTICITY THERMOFORMED STEEL HAVING OXIDATION RESISTANCE FOR AUTOMOBILE, AND THERMOFORMING PROCESS
Document Type and Number:
WIPO Patent Application WO/2023/087352
Kind Code:
A1
Abstract:
Provided in the present invention are a high-plasticity thermoformed steel having oxidation resistance for an automobile and a thermoforming process. The mass percentages of the chemical components of the thermoformed steel are as follows: 0.18-0.28% of C, Si ≤0.20%, 1.20-2.0% of Mn, 0.030-0.080% of P, S≤0.004%, 0.02-0.06% of Als, 0.02-0.06% of Nb, 0.025-0.045% of Ti, 0.05-0.15% of V, 0.5-2.50% of Cr, 0.10-0.30% of Mo, 0.0015-0.0035% of B, N≤0.005% and the balance of Fe and inevitable impurities. The thermoformed steel provided in the present invention has a high oxidation resistance and a high plasticity. In addition, atmosphere protection is not needed during the thermoforming of the steel, and a shot blasting treatment is not needed after thermoforming.
Inventors:
DONG YI (CN)
SHI XIAOGUANG (CN)
LIU RENDONG (CN)
SUN CHENGQIAN (CN)
HAN CHUFEI (CN)
WANG JUNXIONG (CN)
SHI XIAOGUANG (CN)
LIU RENDONG (CN)
SUN CHENGQIAN (CN)
HAN CHUFEI (CN)
WANG JUNXIONG (CN)
Application Number:
PCT/CN2021/132955
Publication Date:
May 25, 2023
Filing Date:
November 25, 2021
Export Citation:
Assignee:
ANGANG STEEL CO LTD (CN)
International Classes:
C22C38/06; C21D8/02; C22C38/22; C22C38/24; C22C38/26; C22C38/28; C22C38/32; C22C38/38
Foreign References:
| CN106119692A | 2016-11-16 | |||
| CN104384283A | 2015-03-04 | |||
| CN110029274A | 2019-07-19 | |||
| CN106191678A | 2016-12-07 | |||
| CN109622706A | 2019-04-16 | |||
| CN106119694A | 2016-11-16 | |||
| CN110129670A | 2019-08-16 | |||
| CN104278216A | 2015-01-14 | |||
| US5061325A | 1991-10-29 | |||
| CN107354385A | 2017-11-17 | |||
| CN103255340A | 2013-08-21 |
Attorney, Agent or Firm:
DALIAN EAST PATENT AGENT LTD. (CN)
Download PDF: