Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Corrosion-resistant steel plate for ocean platform and production method of steel plate

The technology of an offshore platform and a production method is applied in the field of steelmaking to achieve the effects of dense organization, good desulfurization effect and suitable smelting process

Active Publication Date: 2019-09-27
NANYANG HANYE SPECIAL STEEL CO LTD
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of traditional steel for offshore platforms cannot meet the above requirements.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Corrosion-resistant steel plate for ocean platform and production method of steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] To produce a corrosion-resistant steel plate for marine platforms, the chemical composition and weight percentage are: C: 0.03%, Si: 0.02%, Mn: 1%, P: 0.072%, S: 0.004%, Als: 0.020%, Cr: 0.43%, Mo: 0.50%, Zr: 0.09%, Nb: 0.049%, Ni: 0.8%, Ce: 0.03%, Cu: 0.75%, Ca: 0.0028%, the others are Fe and inevitable impurities.

Embodiment 2

[0046] To produce a corrosion-resistant steel plate for offshore platforms. Its chemical composition and weight percentage are: C: 0.05%, Si: 0.08%, Mn: 1.03%, P: 0.075%, S: 0.005%, Als: 0.040%, Cr: 0.49%, Mo: 0.52%, Zr: 0.10%, Nb: 0.053%, Ni: 0.82%, Ce: 0.04%, Cu: 0.79%, Ca: 0.003%, the others are Fe and unavoidable impurities.

Embodiment 3

[0048] To produce a corrosion-resistant steel plate for offshore platforms. Its chemical composition and weight percentage are: C: 0.04%, Si: 0.07%, Mn: 1.01%, P: 0.073%, S: 0.002%, Als: 0.034%, Cr: 0.48%, Mo: 0.49%, Zr: 0.082%, Nb: 0.049%, Ni: 0.81%, Ce: 0.032%, Cu: 0.74, Ca: 0.0027%, the others are Fe and unavoidable impurities.

[0049] The above-mentioned embodiment 1, embodiment 2 and embodiment 3 are all realized by the following steps: 1) KR molten iron pretreatment: when the slag before and after slag is scraped, the thickness of the slag layer on the liquid surface is ≤20mm, and the molten iron passes through KR. After stirring and desulfurization, the S content of molten iron is ≤0.005%, the desulfurization cycle is 17-20min, and the temperature drop of desulfurization is ≤20℃;

[0050] 2) Converter smelting: when entering the furnace, the molten iron S content is less than or equal to 0.005%, P content is less than or equal to 0.08%, the molten iron temperature is greate...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of ferrous metallurgy, and discloses a corrosion-resistant steel plate for an ocean platform and a production method of the steel plate. The corrosion-resistant steel plate is prepared firstly from the combination of proper components in percentage by weight and then by carrying out KR molten iron pretreatment, converter smelting, argon-blowing station fed with aluminum wire, LF furnace refining, VD vacuum refining, continuous casting, heating, controlled rolling and controlled cooling, heap cooling, quenching, tempering and the like. According to the corrosion-resistant steel plate for the ocean platform and the production method of the steel plate, compared with the prior art, the produced steel plate has the advantages of excellent corrosion resistance, good low-temperature impact toughness and excellent comprehensive performance, and is especially suitable for being used under cold weather and seawater corrosion conditions.

Description

Technical field [0001] The invention relates to the technical field of steelmaking, in particular to a steel plate for corrosion-resistant marine platforms and a production method thereof. Background technique [0002] Steel plates for offshore platforms are required to have high corrosion resistance and excellent low-temperature impact performance. At the same time, the steel plates are required to have good welding performance and can be cut, bent, welded, etc., and can be welded, plug welded, bolted, etc. with other structures For the connection, the quality of the steel plate is very demanding. For marine environment conditions, especially deep-sea environments, excellent corrosion resistance, low-temperature impact toughness, and welding crack sensitivity resistance are required to make the steel plate more suitable for use in cold regions and deep-sea environments, while meeting the needs of welding processing. The performance of traditional steel for offshore platforms ca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/48C22C38/50C21D8/02C21D1/18C21C7/064C21C7/10C21C7/06
CPCC21C7/06C21C7/064C21C7/10C21D1/18C21D8/0226C21D2211/002C22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/48C22C38/50
Inventor 许少普刘庆波袁书欣朱书成李忠波张涛康文举唐郑磊张占杰李亮杨阳符可义张国栋蒋鹏薛艳生王英杰袁永旗袁继恒庞百鸣郑海明陈良全微波朱先兴王希彬袁高俭于飒董真真白艺博任义
Owner NANYANG HANYE SPECIAL STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com