Ultrahigh strength thermal shock resistance corundum/mullite product and manufacture method thereof

A production method and anti-thermal shock technology, which is applied in the field of ultra-high-strength thermal-shock-resistant corundum-mullite products and its production, can solve the adverse effects of zinc oxide valve plates and electronic components, and have high thermal stability and high-strength thermal shock resistance. Not enough ideal, shortening the service life of the product, etc., to achieve high strength, good thermal shock resistance, good high temperature strength, and reduce porosity

Inactive Publication Date: 2014-04-02
长兴宏业高科高温耐火材料有限公司
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large expansion coefficient of the corundum phase, the thermal stability of ordinary corundum-mullite products, especially the high-strength thermal shock resistance, is not ideal, which shortens the service life of the product, and is harmful to the sintered zinc oxide valve and adverse effect on the quality of electronic components

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) 150Kg of 8-mesh white corundum, 50Kg of 80-mesh white corundum, 70Kg of 320-mesh tabular corundum, 125Kg of 24-mesh capacitor synthetic mullite, 36-mesh capacitor synthetic mullite 50Kg, 280-mesh andalusite 180Kg, 180-mesh silicon wire 60Kg of stone, 220Kg of 800-mesh alumina micropowder, 90Kg of 200-mesh kaolin, and 5Kg of yellow dextrin are transported to a vertical stainless steel mixer and stirred for 1 hour, and mixed evenly;

[0056] (2) Place the uniformly mixed raw materials in a horizontal auger machine and add 8% water of the total mass of the dry powder to wring them out, and stack the trapped materials for 10 days;

[0057] (3) Use a forced meteor mixer to stir the raw materials for 15 minutes, then transport them to a vibrating hydraulic press, press them into billets with rigid transverse vibration, and place the billets to dry naturally in the shade;

[0058] (4) The dry billet is fired in a 16m double-hole high-temperature push-plate oil kiln at a te...

Embodiment 2

[0061] (1) 250Kg of 8-mesh white corundum, 100Kg of 80-mesh white corundum, 76Kg of 320-mesh tabular corundum, 100Kg of 24-mesh capacitor-synthesized mullite, 36-mesh capacitor-synthesized mullite 60Kg, 280-mesh andalusite 70Kg, and 180-mesh silicon wire 100Kg of stone, 165Kg of 800-mesh alumina micropowder, 75Kg of 200-mesh kaolin, and 4Kg of yellow dextrin are transported to a vertical stainless steel mixer and stirred for 2 hours, and mixed evenly;

[0062] (2) Place the uniformly mixed raw materials in a horizontal auger machine and add 8% water of the total mass of the dry powder to wring them out, and stack the trapped materials for 10 days;

[0063] (3) Use a forced meteor mixer to stir the raw materials for 15 minutes, then transport them to a vibrating hydraulic press, press them into billets with rigid transverse vibration, and place the billets to dry naturally in the shade;

[0064] (4) The dry billet is fired in a 16m double-hole high-temperature push-plate oil ki...

Embodiment 3

[0067] (1) 8-mesh white corundum 174Kg, 80-mesh white corundum 55 Kg, 320-mesh tabular corundum 150Kg, 24-mesh capacitor synthetic mullite 200Kg, 36-mesh capacitor synthetic mullite 150Kg, 280-mesh andalusite 60Kg, 180-mesh silicon wire 30Kg of stone, 150Kg of 800-mesh alumina micropowder, 30Kg of 200-mesh kaolin, and 1Kg of yellow dextrin were transported to a vertical stainless steel mixer and stirred for 1 hour, and mixed evenly;

[0068] (2) Place the uniformly mixed raw materials in a horizontal auger machine and add 8% water of the total mass of the dry powder to wring them out, and stack the trapped materials for 10 days;

[0069] (3) Use a forced meteor mixer to stir the raw materials for 15 minutes, then transport them to a vibrating hydraulic press, press them into billets with rigid transverse vibration, and place the billets to dry naturally in the shade;

[0070] (4) Place the dry billet in a 16m double-hole high-temperature push-plate oil kiln, firing at a temper...

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

The invention relates to an ultrahigh strength thermal shock resistance corundum/mullite product and a manufacture method thereof. The manufacture method comprises steps of stirring 8-mesh white corundum, 80-mesh white corundum, 320-mesh tabular corundum, 24-mesh capacitance synthetic mullite, 36-mesh capacitance synthetic mullite, 280-mesh andalusite, 180-mesh sillimanite, 800-mesh aluminum oxide powder, 200-mesh kaolin and yellow dextrin for 1-3 hours, then adding 8% water so as to wring, stacking and ageing for 10 days, stirring for 15 minutes again, then molding through jolt-squeeze, naturally drying in shade, then firing for 6-8 hours at 1600 DEG C-1620 DEG C so as to obtain the ultrahigh strength thermal shock resistance corundum/mullite product. According to the manufacture method, the raw material chemical components and granularity ratio are optimized, the product is sintered fully, and the prepared corundum/mullite product has low porosity, large volume density, good strength, good thermal shock resistance, good integrated quality, and long service life up to 4-6 months.

Description

technical field [0001] The invention relates to an ultra-high-strength heat-shock-resistant corundum-mullite product and a manufacturing method thereof. Background technique [0002] Corundum-mullite products have the advantages of excellent fire resistance, high strength at room temperature and high temperature, and good chemical stability. They are especially suitable for sintering materials such as zinc oxide valve plates and electronic components in arresters. However, due to the large expansion coefficient of the corundum phase, the thermal stability of ordinary corundum-mullite products, especially the high-strength thermal shock resistance, is not ideal, which shortens the service life of the product, and is harmful to the sintered zinc oxide valve and adversely affect the quality of electronic components. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a corundum-mullite product with good thermal shock r...

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): C04B35/66
Inventor 陈新源
Owner 长兴宏业高科高温耐火材料有限公司
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