Title:
HIGH-STRENGTH HOT-ROLLED STRIP STEEL WITH HIGH WEATHER RESISTANCE, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/241666
Kind Code:
A1
Abstract:
The present invention provides a hot-rolled strip steel and a manufacturing method therefor. The hot-rolled strip steel comprises the following components, in percentages by mass: 0.04-0.15% of C, Si≤0.50%, 0.30-2.00% of Mn, 1.5-4.5% of Cr, 0.10-0.60% of Cu, P≤0.03%, S≤0.01%, 0.01-0.60% of Al, and the balance of Fe and other inevitable impurities; in addition, 2.5%≤2Mn+Cr≤6.0%, wherein during calculation, the mass percentage of the corresponding element in the hot-rolled strip steel is substituted. The hot-rolled strip steel of the present invention shows good atmospheric corrosion resistance and mechanical properties, and can be used, without surface coating, for supporting bracket structural parts such as guardrails, mast towers, and photovoltaics.
Inventors:
BAI MINGZHUO (CN)
LI ZIGANG (CN)
YANG ANA (CN)
LI FENGBIN (CN)
WEN DONGHUI (CN)
ZHOU QINGJUN (CN)
SONG FENGMING (CN)
HU XIAOPING (CN)
LIU HAITING (CN)
LIU SHENG (CN)
ZHANG HUA (CN)
LI ZIGANG (CN)
YANG ANA (CN)
LI FENGBIN (CN)
WEN DONGHUI (CN)
ZHOU QINGJUN (CN)
SONG FENGMING (CN)
HU XIAOPING (CN)
LIU HAITING (CN)
LIU SHENG (CN)
ZHANG HUA (CN)
Application Number:
PCT/CN2023/100515
Publication Date:
December 21, 2023
Filing Date:
June 15, 2023
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C22C38/02; C21D8/02; C22C33/04; C22C38/04; C22C38/06; C22C38/20
Domestic Patent References:
| WO2013107864A1 | 2013-07-25 |
Foreign References:
| CN115161552A | 2022-10-11 | |||
| CN115141974A | 2022-10-04 | |||
| CN102409253A | 2012-04-11 | |||
| CN111945065A | 2020-11-17 | |||
| CN101994064A | 2011-03-30 | |||
| JP2011225918A | 2011-11-10 | |||
| KR20100030070A | 2010-03-18 |
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
Download PDF: