Slide gate nozzle brick utilized in metallurgic cast and prepn. thereof

A sliding nozzle and metallurgical technology, used in foundry equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of unsatisfactory comprehensive performance and high cost, and achieve excellent high temperature wear resistance, excellent performance, and improved adaptability. Effect

Inactive Publication Date: 2003-05-07
YIXING REFRACTORY MATERIAL
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned various sliding nozzle bricks all solve a certain problem individually, and their comprehensive performance is still not ideal, and some of them cost a lot.

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
  • Slide gate nozzle brick utilized in metallurgic cast and prepn. thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] According to the example table (Table 1), take the processed raw materials and binder respectively, fully mix them evenly in the kneader, press the nozzle and the slide plate respectively with a brick press, and dry the adobe at room temperature -300°C, then reduce the Or in a neutral atmosphere, heat treatment at 1000°C / 16h and 500°C / 16h respectively to obtain a solid solution sliding nozzle brick with metal (aluminum)-oxygen-nitrogen, and then impregnated with asphalt, and the sliding brick is finally smoothed, hooped and assembled , Coated surface.

[0015] It is also possible to replace metal particles with metal fibers ranging from 0.2-0.5mm in diameter and 3-10mm in length at 0.5-3% respectively;

[0016] The raw materials of the above examples can also be used as the working surface layer material of the sliding nozzle brick, the thickness of the working surface layer is 15%, 30% and 50% of the thickness of the sliding nozzle brick, and the bottom layer is respec...

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

A sliding sprue brick for metallurgical casing features that at least its surficial working layer is prepared from high-Al2O3 refractory aggragate (75-98 wt.%) and metallic microparticles (2-25 wt% whose smelting point is less than 1000 deg.C through mixing and calcining at 400-1300 deg.C in neutral or reductive atmosphere. Its advantages are high resistance to oxidization, corrosion, heat shock and high-temp water, and high strength.

Description

technical field [0001] The invention relates to the improvement of the composition and preparation method of sliding nozzle bricks for metallurgical casting (molten steel casting). Background technique [0002] At present, sliding nozzle bricks (upper and lower nozzles, upper and lower sliding plate bricks) for metallurgical casting are commonly used in four major types of materials, such as aluminum carbon, aluminum zirconium carbon, magnesia, and corundum. With the development of steelmaking technology, the requirements for sliding nozzle bricks are increasing. , especially higher requirements for thermal shock resistance, corrosion resistance, high temperature structural strength and high temperature wear resistance. However, although aluminum-carbon and aluminum-zirconium carbon sliding nozzle bricks have the characteristics of good thermal shock resistance and high strength, they have the disadvantage of being easily oxidized. When sliding bricks are used in multiple fu...

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
IPC IPC(8): B22D41/32C04B35/10
Inventor 毛庆慧孙同贺胡建坤钱能陈小东
Owner YIXING REFRACTORY MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap