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

Tundish covering agent for non-oriented silicon steel

A technology of oriented silicon steel and covering agent, applied in the field of metal smelting auxiliary materials, can solve the problems of poor thermal insulation performance, high content of impurity elements in the tundish covering agent, difficult to meet the continuous casting of non-oriented silicon steel, etc. Physical ability and thermal insulation performance, the effect of low content

Active Publication Date: 2017-12-19
SHANGHAI MEISHAN IRON & STEEL CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a tundish covering agent for non-oriented silicon steel, which mainly solves the technical problems that the existing tundish covering agent has high content of impurity elements, poor thermal insulation performance, and is difficult to meet the continuous casting of non-oriented silicon 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
  • Tundish covering agent for non-oriented silicon steel
  • Tundish covering agent for non-oriented silicon steel
  • Tundish covering agent for non-oriented silicon steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention is described in more detail below with specific embodiment 1-5

[0033] Table 1 is the percentage by weight of the chemical composition of the covering agent of the present invention, and the balance is unavoidable impurities;

[0034] Table 2 shows the change of carbon content in molten steel in ladle and tundish;

[0035] Table 3 is the change of molten steel temperature in ladle and tundish;

[0036] In Table 3, T1, T2, and T3 are the temperatures of molten steel in the tundish when 80 tons, 160 tons, and 250 tons of molten steel are poured into the ladle, respectively.

[0037] Physical properties of the covering agent of the present invention: the melting point (hemispherical point temperature) is 1360-1390 °C; the viscosity at 1400 °C is 0.25-0.30 Pa·S.

[0038] The field test shows that the tundish covering agent for non-oriented silicon steel in the embodiment has no crust sticking phenomenon, no abnormal corrosion of stopper rod, good sp...

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
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a tundish covering agent for non-oriented silicon steel, which mainly solves the technical problems that the existing tundish covering agent has high content of impurity elements and poor thermal insulation performance, and is difficult to meet the continuous casting of non-oriented silicon steel. The technical scheme adopted in the present invention is: a tundish covering agent for non-oriented silicon steel, the weight percent of its chemical composition is CaO 40-50%, SiO2 15-25%, Al2O3 5-8%, MgO 5-10%, MgCO3 10~12%, CaCO3 8~10%, CaF2 2~5%, C <1%, Ti<0.06%, P <0.01%, S <0.01%, silicon aluminum magnesium powder 2~5%, silicon aluminum magnesium The mass ratio of silicon, aluminum and magnesium in the powder is 1:2:3, and the rest are unavoidable impurities. The covering agent of the invention has good thermal insulation performance, can effectively absorb inclusions, prevent molten steel from increasing carbon, and is mainly used in the production of non-oriented silicon steel.

Description

technical field [0001] The invention belongs to the technical field of metal smelting auxiliary materials, and relates to a covering agent for a tundish in the production of molten steel cast by a slab caster, in particular to a covering agent for a tundish for non-oriented silicon steel. Background technique [0002] The tundish covering agent covers the molten steel surface in the tundish during the continuous casting process. Its main functions are: heat insulation, reducing heat loss on the molten steel surface, and preventing excessive temperature drop during the casting process; isolating molten steel and air to prevent Secondary oxidation of the molten steel by the atmosphere; dissolve and absorb non-metallic inclusions floating to the surface of the molten steel to purify the molten steel; do not react with the molten steel to avoid contamination of the molten steel and prevent the resulfurization of the molten steel, etc. [0003] The production process and equipmen...

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): B22D11/111
Inventor 江中块倪修华吴德润杨金成
Owner SHANGHAI MEISHAN IRON & 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