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

Submerged nozzle with flared outlet and method of use thereof

A trumpet-shaped, immersed technology, used in metal processing equipment, manufacturing tools, casting melt containers, etc., can solve the problems affecting the quality of continuous casting billets, the impact of continuous casting production, disrupting the production rhythm, etc., to reduce breakout. risk, improved erosion resistance, and the effect of extending service life

Active Publication Date: 2022-04-29
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of negative pressure, the gap between the molten steel and the inner wall of the nozzle will suck air like an air pump, causing secondary oxidation of the molten steel and partial flow of the nozzle, affecting the quality of the continuous casting slab
[0005] During the production process, after the submerged nozzle is inserted into the molten steel, the slag line and the mold slag in the mold will have a long-term physical and chemical reaction, which will cause the nozzle to be severely eroded at the slag line. Replacing the nozzle will disrupt the production rhythm and affect Productivity
If the submerged nozzle breaks at the slag line, it may cause breakout of the slab shell, which will seriously affect the continuous casting production

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
  • Submerged nozzle with flared outlet and method of use thereof
  • Submerged nozzle with flared outlet and method of use thereof
  • Submerged nozzle with flared outlet and method of use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] combine Figure 1-2 As shown, the present application provides a submerged nozzle with a flared outlet and a method of using the same. A flared outlet 9 is provided in the inner cavity of the lower end of the submerged nozzle, the radius of curvature is 1000mm, and the length is 100mm.

[0027] The length of the nozzle body is 700mm, the upper inner diameter of the inner cavity 4 of the nozzle chuck 1 is 110mm, the lower inner diameter is 35mm, and the length is 70mm.

[0028] The length of the nozzle cone section 2 is 430mm, the lower inner diameter of the inner cavity 5 of the nozzle cone section is 25mm, and the upper inner diameter is equal to the lower inner diameter of the inner cavity 4 of the nozzle chuck.

[0029] The length of the vertical section 3 of the nozzle is 200mm, the outer diameter is 70mm, and the upper inner diameter is equal to the lower inner diameter of the inner cavity 5 of the conical section of the nozzle. The length of the slag line 7 is 20...

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
lengthaaaaaaaaaa
lengthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The application discloses a submerged nozzle with a trumpet-shaped outlet and its use method, which includes, from top to bottom: a nozzle chuck, a nozzle tapered section, a nozzle vertical section, and a trumpet-shaped outlet; the inner chamber of the nozzle chuck The upper inner diameter is 100-120mm, the lower inner diameter is 30-40mm, and the length is 60-80mm; the length of the tapered section of the nozzle is 360-500mm, and the lower inner diameter of the inner cavity of the tapered section of the nozzle is 20-30mm; The length of the vertical section of the nozzle is 180-220 mm, and the outer diameter is 60-80 mm; the radius of curvature of the trumpet-shaped outlet is 500-1500 mm, and the length is 90-110 mm. When the billet pulling speed is 2.4-2.8m / min, the nozzle insertion depth into molten steel is 110-120mm. When the nozzle erosion depth is ≥10mm, the nozzle is lifted up, and the insertion depth is changed to 90-100mm. The application can not only improve the utilization rate of the nozzle, but also stabilize the flow field in the crystallizer, which has direct significance to the improvement of the quality of the slab and the stable and smooth production.

Description

technical field [0001] The invention relates to the field of billet continuous casting, in particular to a submerged nozzle with a flared outlet and a method for using the same. Background technique [0002] The submerged nozzle for continuous casting mold is a refractory casing installed at the lower part of the tundish and inserted below the molten steel level of the mold to protect the casting refractory. It is the last refractory product used in the steelmaking-continuous casting process. : ①Isolate the contact between the molten steel and the air to prevent the secondary oxidation of the molten steel; ②Improve the flow state of the molten steel in the mold and promote the floating of inclusions; Improve the lubrication stability between the mold and the surface of the billet, promote the uniform solidification of the billet shell, and improve the surface quality of the billet. [0003] When the conventional nozzle is used for pouring, the impact force of the molten ste...

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 Patents(China)
IPC IPC(8): B22D41/50
CPCB22D41/50
Inventor 张康晖马建超李强赵家七
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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