Title:
MICRO-MOLYBDENUM-TYPE WEATHER-RESISTANT BRIDGE STEEL PLATE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/040034
Kind Code:
A1
Abstract:
A micro-molybdenum-type weather-resistant bridge steel plate, which is made by smelting the following components according to weight ratio: 0.05 to 0.08% C, 0.30 to 0.50% Si, 1.25 to 1.35% Mn, 0.010 to 0.014% P, S≤0.003%, 0.020 to 0.030% Nb, 0.010 to 0.020% Ti, 0.040 to 0.050% V, 0.25 to 0.40% Cu, 0.25 to 0.35% Ni, 0.45 to 0.55% Cr, 0.03 to 0.08% Mo, 0.020 to 0.040% Alt, and the remainder is Fe and impurities. The content of micro-molybdenum reduces the production costs of the steel plate. The steel plate has a yield strength of 500 to 600 MPa, the yield ratio is less than or equal to 0.85, and the maximum thickness of the steel plate may reach 80 mm.
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Inventors:
HUANG YIXIN (CN)
QIAO MINGLIANG (CN)
ZHAO BAIJIE (CN)
TANG CHUNXIA (CN)
WANG JUN (CN)
CUI QIANG (CN)
CHEN LINHENG (CN)
YIN YUQUN (CN)
LIU TAO (CN)
QIN YURONG (CN)
MENG LINGMING (CN)
QIAO MINGLIANG (CN)
ZHAO BAIJIE (CN)
TANG CHUNXIA (CN)
WANG JUN (CN)
CUI QIANG (CN)
CHEN LINHENG (CN)
YIN YUQUN (CN)
LIU TAO (CN)
QIN YURONG (CN)
MENG LINGMING (CN)
Application Number:
PCT/CN2021/131106
Publication Date:
March 23, 2023
Filing Date:
November 17, 2021
Export Citation:
Assignee:
NANJING IRON & STEEL CO LTD (CN)
International Classes:
C22C38/02; C21D1/18; C21D8/02; C22C38/04
Foreign References:
| CN101876032A | 2010-11-03 | |||
| CN105506450A | 2016-04-20 | |||
| CN113025880A | 2021-06-25 | |||
| CN108486466A | 2018-09-04 | |||
| CN112522620A | 2021-03-19 | |||
| JPH09302442A | 1997-11-25 | |||
| KR20010002776A | 2001-01-15 |
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM ( ORDINARY PARTNERSHIP ) (CN)
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