Supercharge Your Innovation With Domain-Expert AI Agents!

An in-situ oriented non-oxide reinforced silicon carbide brick and its preparation method

A non-oxide, silicon carbide brick technology, applied in the field of silicon carbide bricks, can solve problems such as damage, achieve the effect of improving the degree of progress, improving strength and toughness, and eliminating the difference in the degree of nitriding reaction

Active Publication Date: 2021-01-01
河南海格尔高温材料有限公司
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, silicon carbide bricks need to withstand frequent hot and cold cycles and extremely high temperature gradients during use, so that they are often damaged due to excessive internal thermal stress of the bricks.

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
  • An in-situ oriented non-oxide reinforced silicon carbide brick and its preparation method
  • An in-situ oriented non-oxide reinforced silicon carbide brick and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A total of 70 parts of 98 silicon carbide particles (20-30-20), 15 parts of 98 silicon carbide fine powder 325 mesh, 10 parts of 98 metal silicon 240 mesh, 5 parts of 98 metal silicon 400 mesh; plus dextrin binder 3%; added organic fiber is 0.2%, diameter 30μm, length 4mm;

[0030] The preparation method is:

[0031] Step 1. Mixing sequence: all powders and antioxidants are pre-mixed for later use. Add aggregate to the wheel mill and dry mix for 5 minutes; add binder and dry mix for 5 minutes; add water and mix for 5 minutes; add powder and mix for 20-30 minutes; finally use 0.5mm sieve to sieve the organic fiber into Mixer, after all sieved in, continue to mix for 5 minutes and discharge;

[0032] Step 2, forming process; the forming process adopts normal pressing forming, pours the mixed material into the mold, and forms under a certain pressure; adopts friction brick press, hydraulic press or manual pounding to form;

[0033] Step 3: After drying the green body at...

Embodiment 1

[0034] Performance comparison between implementation 1 and the original brick:

[0035]

Embodiment 2

[0037] 68 parts of 98 silicon carbide particles in three particle sizes (20-30-20), 7 parts of 98 silicon carbide fine powder 325 mesh, 10 parts of 98 metal silicon 240 mesh, 5 parts of 98 metal silicon 400 mesh; 5 parts of silicon dioxide fine powder Parts, plus 2% calcium lignosulfonate binder; the added organic fiber is 0.2%, with a diameter of 30μm and a length of 4mm;

[0038] The preparation method is:

[0039] Step 1. Mixing sequence: all powders and antioxidants are pre-mixed for later use. Add aggregate to the wheel mill and dry mix for 5 minutes; add binder and dry mix for 5 minutes; add water and mix for 5 minutes; add powder and mix for 20-30 minutes; finally use 0.5mm sieve to sieve the organic fiber into Mixer, after all sieved in, continue to mix for 5 minutes and discharge;

[0040] Step 2, forming process; the forming process adopts normal pressing forming, pours the mixed material into the mold, and forms under a certain pressure; adopts friction brick pres...

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
diameteraaaaaaaaaa
lengthaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an in-situ oriented non-oxide reinforced silicon carbide brick with low cost, simple process, more sufficient nitriding reaction, higher cold and hot state strength, better toughness and significantly improved service life and a preparation method thereof . The main materials include silicon carbide aggregate and powder, metal silicon, alumina micropowder, and silica micropowder. The present invention introduces organic fibers on the basis of the innovative existing silicon carbide brick technology. ) can be melted or burned to leave a fibrous space, under high temperature nitrogen environment, Si and N 2 In the gas phase, the non-oxidized binding phase is preferentially formed in the fiber space and a better development degree is obtained, thereby forming a clustered non-oxide phase in the form of a fiber-like diffuse interspersed distribution inside the brick body, thereby improving the strength and strength of the silicon carbide brick. toughness.

Description

technical field [0001] The invention relates to a silicon carbide brick, in particular to an in-situ oriented non-oxide reinforced silicon carbide brick and a preparation method thereof. Background technique [0002] Silicon carbide brick is a high-grade refractory material obtained by using silicon carbide aggregate and fine powder as the main raw material, choosing a suitable combination method, forming by machine pressing or pouring, and then baking and firing at high temperature. It has good chemical stability and thermal stability. With the advantages of high conductivity, high strength in cold and hot states, and good wear resistance, it is widely used in high-temperature kiln linings in industries such as iron and steel, nonferrous metallurgy, and petrochemical industries. [0003] Silicon carbide (SiC) bricks are divided into two types according to the bonding method: oxide bonding and non-oxide bonding. Non-oxide bonding can be divided into silicon nitride (Si 3 N...

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): C04B35/80C04B35/565C04B35/636C04B35/634C04B35/632
CPCC04B35/565C04B35/632C04B35/634C04B35/6365C04B2235/77C04B2235/96C04B2235/428C04B2235/3418C04B2235/524C04B2235/5264C04B2235/526C04B2235/46C04B2235/3217
Inventor 李纪伟邵淑英贾博侯春玲毕振勇陈鱼军
Owner 河南海格尔高温材料有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com