Title:
ULTRAHIGH REAMING STEEL AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/246904
Kind Code:
A1
Abstract:
The present invention provides ultrahigh reaming steel and a manufacturing method therefor. The steel comprises the following components in percentage by weight: C: 0.03-0.09%; Si: ≤0.2%; Mn: 0.5-2.0%; P: ≤0.02%; S: ≤0.003%; Al: 0.2-1.2%; N: ≤0.004%; Ti: 0.05-0.20%; Mo: 0.05-0.5%; Mg: ≤0.005%; O: ≤0.003%; B: ≤0.001%; and the balance being Fe and other inevitable impurities. C, Mn, Mo and B in the steel satisfy the following: 0.25≤2×C+Mn/3+Mo+150×B≤1.5; during calculation, the numerical value before the percent sign for the mass percentage of the corresponding element is substituted. The steel in the present invention has excellent matching of strength, plasticity and reaming performance, and can be applied in passenger vehicle chassis parts needing high strength and thinning, such as a control arm and a subframe.
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Inventors:
WANG HUANRONG (CN)
ZHANG CHEN (CN)
YANG ANA (CN)
PANG HOUJUN (CN)
FAN JIAJIE (CN)
ZHANG CHEN (CN)
YANG ANA (CN)
PANG HOUJUN (CN)
FAN JIAJIE (CN)
Application Number:
PCT/CN2023/101852
Publication Date:
December 28, 2023
Filing Date:
June 21, 2023
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C22C38/02; C21D6/00; C21D8/02; C22C33/04; C22C38/04; C22C38/06; C22C38/08; C22C38/12; C22C38/14; C22C38/32; C22C38/38; C22C38/54
Domestic Patent References:
| WO1987001735A1 | 1987-03-26 |
Foreign References:
| CN114107792A | 2022-03-01 | |||
| CN110512146A | 2019-11-29 | |||
| CN114107789A | 2022-03-01 | |||
| CN114107791A | 2022-03-01 | |||
| CN108441763A | 2018-08-24 |
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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