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

Core-spun thread and method for implementing molten steel vanadium-nitrogen alloying

A technology of nitrogen alloying and cored wire, which is applied in the field of nitrogen alloying to realize vanadium in molten steel, can solve the problem of large fluctuations in vanadium recovery rate and nitrogen recovery rate, difficulty in feeding the cored wire through steel slag, Unfavorable vanadium recovery rate and nitrogen recovery rate and other issues, to achieve the effect of improving vanadium recovery rate and nitrogen recovery rate, good fluidity, and improved fluidity

Inactive Publication Date: 2011-10-12
PANZHIHUA IRON AND STEEL +2
View PDF3 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method has the following disadvantages: because the steel slag on the surface of molten steel is thick and has a certain hardness, it is difficult for the cored wire to pass through the steel slag and feed into the molten steel, and the contact time between the cored wire and the steel slag is too long, which will cause Premature melting of cored wire is not conducive to the improvement of vanadium recovery rate and nitrogen recovery rate, and will also cause large fluctuations in vanadium recovery rate and nitrogen recovery rate, affecting the stability of product quality
When the cored wire is actually used, the above problems will occur, that is, it is not easy to pass through the steel slag and feed it into the molten steel

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
  • Core-spun thread and method for implementing molten steel vanadium-nitrogen alloying
  • Core-spun thread and method for implementing molten steel vanadium-nitrogen alloying

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A cored wire for alloying vanadium and nitrogen in molten steel, including a core layer, the core layer is composed of vanadium nitride alloy and fluorite, and the weight ratio of the vanadium nitride alloy and fluorite is: vanadium nitride Alloy: 85%, fluorite: 15%, both vanadium nitride alloy and fluorite are powder materials, the particle size is less than 3mm, the core layer is wrapped with a sheath made of cold-rolled strip steel, and the outer diameter of the entire cored wire is 12mm.

Embodiment 2

[0038] A cored wire for alloying vanadium and nitrogen in molten steel, including a core layer, the core layer is composed of vanadium nitride alloy and fluorite, and the weight ratio of the vanadium nitride alloy and fluorite is: vanadium nitride Alloy: 95%, fluorite: 5%, both vanadium nitride alloy and fluorite are powder materials, the particle size is less than 3mm, the core layer is wrapped with a sheath made of cold-rolled strip steel, and the outer diameter of the entire cored wire is 12mm.

Embodiment 3

[0040] The cored wire used for alloying molten steel with vanadium and nitrogen includes a core layer, the core layer contains vanadium nitride alloy, fluorite and vanadium-iron alloy, and the weight ratio of the vanadium nitride alloy, fluorite and vanadium-iron alloy is: Vanadium Nitride Alloy: 90%, Fluorite: 5%, Vanadium Iron Alloy: 5%. Vanadium nitride alloy, fluorite and vanadium-iron alloy are all powder materials with a particle size of less than 3mm. The core layer is wrapped with a sheath made of cold-rolled strip steel. The outer diameter of the entire cored wire is 13mm.

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a core-spun thread and method for implementing molten steel vanadium-nitrogen alloying, and the method can be used for feeding the core-spun thread into molten steel conveniently and preventing the thread from being jammed and broken and is beneficial to improving the recovery rate of nitrogen and vanadium. The core-spun thread comprises a core layer and skin, wherein the core layer contains vanadium nitride alloy and fluorite. The method mainly comprises the following steps: adding the fluorite to the core layer of the core-spun thread; and then feeding the core-spun thread into the molten steel. The method has the beneficial effects that the fluorite is added into the core layer, so that the melting point of steel slag is reduced and the steel slag fluidity is improved so as to facilitate the process of feeding the core-spun thread into the molten steel, thus reducing the loss of the core-spun thread in steel slag layers, being beneficial to improving the recovery rate of vanadium and nitrogen and preventing the core-spun thread from being jammed and broken during the feeding process.

Description

technical field [0001] The invention relates to a cored wire used for alloying liquid steel vanadium and nitrogen and a method for realizing alloying liquid steel vanadium and nitrogen. Background technique [0002] Vanadium nitride alloy is a new alloy additive that can replace ferrovanadium for the production of microalloyed steel. The addition of vanadium nitride alloy to steel can improve the comprehensive mechanical properties of steel such as strength, toughness, ductility and thermal fatigue resistance, and make the steel have good weldability. When the same strength is achieved, the addition of vanadium nitride saves 30-40% of the added vanadium, thereby reducing the cost. Vanadium nitride alloys can be used in structural steel, tool steel, pipe steel, steel bars and cast iron. The application of vanadium nitride alloy in high-strength low-alloy steel can effectively micro-alloy vanadium and nitrogen at the same time, promote the precipitation of carbon, vanadium a...

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): C22C33/06C21C7/00
Inventor 刘明吴仕富杨杰张国才邓通武柏万春
Owner PANZHIHUA IRON AND STEEL
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