Title:
HIGH-STRENGTH AND HIGH-PLASTICITY THERMOFORMED STEEL HAVING OXIDATION RESISTANCE FOR AUTOMOBILE, AND THERMOFORMING PROCESS
Document Type and Number:
WIPO Patent Application WO/2023/087351
Kind Code:
A1
Abstract:
Provided in the present invention are a high-strength and 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: 0.35-0.50% of C, Si ≤0.20%, 1.50-2.50% of Mn, 0.050-0.10% of P, S≤0.004%, 0.02-0.06% of Als, 0.03-0.07% of Nb, 0.020-0.050% of Ti, 0.08-0.15% of V, 1.50-3.20% of Cr, 0.10-0.30% of Mo, B ≤0.0040%, N≤0.005%, and the balance of Fe and inevitable impurities. The thermoformed steel provided in the present invention has a high oxidation resistance, a high strength and a high plasticity; atmosphere protection is not needed during thermoforming; and a shot blasting treatment is not needed after thermoforming.
Inventors:
DONG YI (CN)
LIU RENDONG (CN)
SHI XIAOGUANG (CN)
SUN CHENGQIAN (CN)
WANG JUNXIONG (CN)
HAN CHUFEI (CN)
LIU RENDONG (CN)
SHI XIAOGUANG (CN)
SUN CHENGQIAN (CN)
WANG JUNXIONG (CN)
HAN CHUFEI (CN)
Application Number:
PCT/CN2021/132954
Publication Date:
May 25, 2023
Filing Date:
November 25, 2021
Export Citation:
Assignee:
ANGANG STEEL CO LTD (CN)
International Classes:
C22C38/02; B21D22/02; C21D7/13; C22C38/04; C22C38/06; C22C38/22; C22C38/24; C22C38/26; C22C38/28; C22C38/32
Foreign References:
| CN111926248A | 2020-11-13 | |||
| CN103614640A | 2014-03-05 | |||
| CN113388773A | 2021-09-14 | |||
| CN113106338A | 2021-07-13 | |||
| CN108642373A | 2018-10-12 | |||
| JP2001226744A | 2001-08-21 | |||
| CN106811689A | 2017-06-09 | |||
| CN106119693A | 2016-11-16 | |||
| CN103255340A | 2013-08-21 |
Attorney, Agent or Firm:
DALIAN EAST PATENT AGENT LTD. (CN)
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