Ceramic granulation powder for manufacturing automobile parts and preparation method of ceramic granulation powder

A technology of auto parts and granulation powder, which is applied in the field of alumina ceramics, can solve the problems of easy generation of bridge pores, difficult generation of glass phase, low powder cohesion, etc., to achieve precise product size control, lower molding pressure, The effect of moderate green body strength

Inactive Publication Date: 2018-11-30
LOUDI ANTAEUS ELECTRONICS CERAMICS
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the current process of preparing ceramic powder by spray granulation, the ceramic grains are too large, it is not easy to produce glass phase, and the bonding force of ceramic metallization is irrational. A single adhesive is used, and the powder bonding is too low or too high. In the blank process, the compression ratio is high, and the product shrinks and deforms. If the compression ratio is too high, the powder is easily broken and bridge pores are easy to occur. Therefore, it is necessary to improve the ceramic powder formula and preparation method.

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

[0020] A ceramic granulation powder for manufacturing auto parts, including ceramic material, dispersant, composite binder, release agent and dispersion medium, the ceramic material is composed of the following composition and its weight percentage: α-AL 2 o 3 90% powder, 1.2% magnesium oxide, 2.3% calcium carbonate, 3% silicon dioxide, 0.3% titanium dioxide, 1.7% zirconium dioxide, 1.5% chromium trioxide; the dispersant is 0.3% by weight relative to the ceramic material Ammonium polyacrylate composite solution; the composite binder is 1.0% gum arabic relative to the weight percentage of the porcelain material, 0.2% PVA-BP17 relative to the weight percentage of the porcelain material, and 0.1% relative to the weight percentage of the porcelain material Three kinds of PVA-BP05 are mixed with water to form a mixture with a mass concentration of 18%; the release agent is emulsified wax with a weight percentage of 1% relative to the ceramic material; the dispersion medium is water...

Embodiment 2

[0023] A ceramic granulation powder for manufacturing auto parts, including ceramic material, dispersant, composite binder, release agent and dispersion medium, the ceramic material is composed of the following composition and its weight percentage: α-AL 2 o 3 92.5% powder, 0.6% magnesium oxide, 1% calcium carbonate, 3.5% silicon dioxide, 0.4% titanium dioxide, 1% zirconium dioxide, 1% chromium oxide; the dispersant is 0.55% by weight relative to the porcelain Ammonium polyacrylate composite solution; the composite binder is 0.8% PVA-BP17 relative to the weight percentage of the porcelain material, and two kinds of PVA-BP05 are mixed with water to form a mass concentration of 18% relative to the weight percentage of the porcelain material. % mixture; the release agent is 1.5% emulsified wax relative to the weight percentage of the porcelain material; the dispersion medium is 35% water relative to the weight percentage of the porcelain material.

[0024] The preparation method...

Embodiment 3

[0026] A ceramic granulation powder for manufacturing auto parts, including ceramic material, dispersant, composite binder, release agent and dispersion medium, the ceramic material is composed of the following composition and its weight percentage: α-AL 2 o 3 90.5% powder, 0.8% magnesium oxide, 1.4% calcium carbonate, 2.7% silicon dioxide, 0.6% titanium dioxide, 2% zirconium dioxide, 2% chromium oxide; the dispersant is 0.4% by weight relative to the porcelain Ammonium polyacrylate composite solution; the composite binder is 1.5% gum arabic relative to the weight percentage of the porcelain material, and two kinds of PVA-BP17 are mixed with water to form a mass concentration of 18% relative to the weight percentage of the porcelain material. The mixture; the release agent is 2% emulsified wax relative to the weight percentage of the porcelain material; the dispersion medium is 33% water relative to the weight percentage of the porcelain material.

[0027] The preparation met...

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
densityaaaaaaaaaa
flexural strengthaaaaaaaaaa
fluidityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a ceramic granulation powder for manufacturing automobile parts. The ceramic granulation powder comprises a porcelain material, a dispersing agent, a composite binder, a mold release agent and a dispersing medium, wherein the porcelain material is composed of the following composition in percentage by weight: 90-94% of alpha-AL2O3 powder, 0.6-1.5% of magnesium oxide, 0.5-4%of calcium carbonate, 1.2-3.5% of silica, 0.1-1.2% of titanium dioxide, 0.5-2.5% of dioxide zirconium, and 0-3.5% of chromium oxide; and the composite binder is a mixture which is prepared by mixingtwo or three of gum arabic with a weight percentage of 1.0-2.5% relative to the porcelain material, PVA-BP17 with a weight percentage of 0-0.6% relative to the porcelain material and PVA-BP05 with a weight percentage of 0-0.3% relative to the porcelain material with water and has a mass concentration of 18%. The prepared ceramic powder has a rupture strength of 350 MPa, the gas tightness of a ceramic and metallized layer can reach 1*10<13> Pa.M<3>/s, and the powder looseness is 1.23 g/cm<3> or more, so that during pressing of a blank, the compression ratio is lowered, and the product shrinkageis reduced.

Description

technical field [0001] The invention belongs to the technical field of alumina ceramics, and in particular relates to a ceramic granulation powder for manufacturing auto parts and a preparation method thereof. Background technique [0002] High-purity alumina ceramics are ceramic materials with an Al2O3 content of more than 99.9%. Because of its sintering temperature as high as 1650-1990°C and a transmission wavelength of 1-6μm, it is generally made of molten glass to replace platinum crucibles; use its light transmission It can be used as a sodium lamp tube because of its high corrosion resistance and alkali metal corrosion resistance; it can be used as an integrated circuit substrate and high-frequency insulating material in the electronics industry. [0003] Ordinary alumina ceramics are divided into 99 porcelain, 95 porcelain, 90 porcelain, 85 porcelain and other varieties according to the Al2O3 content. Sometimes those with Al2O3 content of 80% or 75% are also classifie...

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): C04B35/10C04B35/626C04B35/63C04B35/634C04B35/636
CPCC04B35/10C04B35/62605C04B35/6303C04B35/63416C04B35/636C04B2235/3206C04B2235/3208C04B2235/3232C04B2235/3241C04B2235/3244C04B2235/3418
Inventor 蒋勇康丁华康文涛
Owner LOUDI ANTAEUS ELECTRONICS CERAMICS
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