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

Atmosphere corrosion resisting structural steel liquid containing chrome, vanadium and nitride, atmosphere corrosion resisting structural steel and production method of atmosphere corrosion resisting structural steel

A technology of atmospheric corrosion resistance and production method, which is applied in the field of atmospheric corrosion resistant section steel, can solve the problems such as the lack of strength index of section steel, and achieve the effects of improving quality, avoiding central cracks, and increasing the pass rate of cast slabs

Active Publication Date: 2017-05-17
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a profile steel, the square continuous casting slab produced after increasing the chromium content has relatively obvious central defects (mainly central cracks and central shrinkage cavities), and the strength index of the final profile steel cannot reach that of plate steel Therefore, profile steels with better atmospheric corrosion resistance are still under development.

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
  • Atmosphere corrosion resisting structural steel liquid containing chrome, vanadium and nitride, atmosphere corrosion resisting structural steel and production method of atmosphere corrosion resisting structural steel
  • Atmosphere corrosion resisting structural steel liquid containing chrome, vanadium and nitride, atmosphere corrosion resisting structural steel and production method of atmosphere corrosion resisting structural steel
  • Atmosphere corrosion resisting structural steel liquid containing chrome, vanadium and nitride, atmosphere corrosion resisting structural steel and production method of atmosphere corrosion resisting structural steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Specific embodiments of the present invention will be described in detail below. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0026] As mentioned above, the present invention provides a kind of atmospheric corrosion-resistant molten steel, based on the total weight of molten steel, molten steel contains: 0.01%-0.09% of C, 0.15%-0.35% of Si, 0.30%-0.60% of Mn, 0.30%-0.40% Cu, 0.20%-0.30% Ni, 2.0%-3.5% Cr, 0.16%-0.20% V, 0.004%-0.008% N, no more than 0.030% P and no Greater than 0.020% S. The central quality of the slab (also called continuous casting slab) obtained by continuous casting of molten steel with the aforementioned composition is improved, and the center of the cross section of the continuous casting slab (after acid etching) basically has no central cracks and holes.

[0027] According to the molten steel of the prese...

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

PropertyMeasurementUnit
yield strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of steel making, and particularly provides atmosphere corrosion resisting structural steel liquid. Based on the total weight of the steel liquid, the steel liquid contains 0.01%-0.09% of C, 0.15%-0.35% of Si, 0.30%-0.60% of Mn, 0.30%-0.40% of Cu, 0.20%-0.30% of Ni, 2.0%-3.5% of Cr, 0.16%-0.20% of V, 0.004%-0.008% of N, 0.030% or less of P and 0.020% or less of S. The invention provides atmosphere corrosion resisting structural steel and a production method of the atmosphere corrosion resisting structural steel. The center quality of a casting blank can be improved by adopting the steel liquid for continuous casting, center burst and center line shrinkage are avoided, accordingly, the quality of the high-strength atmosphere corrosion resisting structural steel casting blank can be improved, and the qualification rate of the casting blank can be greatly improved; and meanwhile the finally-obtained atmosphere corrosion resisting structural steel is good in atmosphere corrosion resistance and has higher strength performance.

Description

technical field [0001] The invention relates to an atmospheric corrosion-resistant steel molten steel, an atmospheric corrosion-resistant steel obtained by continuous casting and rolling using the molten steel of the invention, a production method of the atmospheric corrosion-resistant steel and the atmospheric corrosion-resistant steel obtained by the method. Background technique [0002] Atmospheric corrosion-resistant steel is a very important class of steel. Its atmospheric corrosion resistance is 2-8 times that of ordinary steel, and its paintability is improved by 1.5-10 times. Due to the effectiveness of atmospheric corrosion resistance steel compared with ordinary steel, and its good economic efficiency compared with stainless steel, it has been developed rapidly in various countries in the world. Various steel structures used in the open air, railway vehicles and bridges are is the scope of its application. [0003] The early atmospheric corrosion-resistant steel v...

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): C22C38/46
Inventor 刘明邓通武郭跃华
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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