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Manufacturing method of quartz ceramic crucible

A manufacturing method and technology of quartz ceramics, applied in the field of quartz ceramics, can solve the problems of insufficient surface smoothness, high use cost, easy-to-stick materials, etc., and achieve the effects of smooth inner surface, high molding efficiency and low cost

Inactive Publication Date: 2017-08-11
邹亚静
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, the inner surface of the traditional quartz ceramic crucible is not smooth enough, it is easy to stick material, it is difficult to clean, and the use cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The present invention is a kind of manufacturing method of quartz ceramic crucible, and described manufacturing method comprises following process steps:

[0031] The first step: the selection of raw materials, the purity of which is: 99.9% ordinary purity fused silica sand, the fused silica sand is configured according to the following particle sizes, and the mass percentages of each particle size of the fused silica sand are:

[0032] The mass percentage of fused silica sand with a particle size of 2 to 0.5mm is 25%;

[0033] The mass percentage of fused silica sand with a particle size of 0.5-0.1mm is 30%;

[0034] The mass percentage of fused silica sand with a particle size of 0.1-0.09mm is 25%;

[0035] The mass percentage of fused silica sand with particle size less than 0.09mm is 20%;

[0036] The second step: slurry preparation, mix the fused silica sand proportioned in the second step evenly, add 30wt% ultrapure water and 0.2wt% methylcellulose binder, and t...

Embodiment 2

[0047] The present invention is a kind of manufacturing method of quartz ceramic crucible, and described manufacturing method comprises following process step:

[0048] The first step: the selection of raw materials, the purity of which is: 99.9% ordinary purity fused silica sand and 99.995% high purity fused silica sand, the fused silica sand is configured according to the following particle sizes, and the fused silica sand of each particle size is The mass percentages accounted for are:

[0049] The mass percentage of fused silica sand with a particle size of 2 to 0.5mm is 35%;

[0050] The mass percentage of fused silica sand with a particle size of 0.5-0.1mm is 25%;

[0051] The mass percentage of fused silica sand with a particle size of 0.1-0.09mm is 20%;

[0052] The mass percentage of fused silica sand with particle size less than 0.09mm is 20%;

[0053] The second step: slurry preparation, mix the fused silica sand proportioned in the first step evenly, add 25wt% u...

Embodiment 3

[0064] The present invention is a kind of manufacturing method of quartz ceramic crucible, and described manufacturing method comprises following process step:

[0065] The first step: the selection of raw materials, the purity of which is: 99.9% ordinary purity fused silica sand, 99.995% high purity fused silica sand and 99.9999% ultra-high purity fused silica sand, the fused silica sand is configured according to the following particle sizes , where the mass percentages of fused silica sand of each particle size are:

[0066] The mass percentage of fused silica sand with a particle size of 2 to 0.5mm is 25%;

[0067] The mass percentage of fused silica sand with a particle size of 0.5-0.1mm is 27%;

[0068] The mass percentage of fused silica sand with a particle size of 0.1-0.09mm is 23%;

[0069] The mass percentage of fused silica sand with particle size less than 0.09mm is 25%;

[0070] The second step: slurry preparation, mix the fused silica sand proportioned in the...

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Abstract

The invention discloses a manufacturing method of a quartz ceramic crucible. The manufacturing method includes the steps of raw material selection, wherein average-purity melted quartz sand with the purity of 99.9%, high-purity melted quartz sand with the purity of 99.995% and ultrahigh-purity melted quartz sand with the purity of 99.9999% are selected as main raw materials and are prepared according to different particle sizes; slurry preparation, wherein the three kinds of prepared melted quartz sand are mixed evenly, ultrapure water and binder are added, and then the materials are fully mixed in a ball mill or a stirrer to be prepared into slurry; blank forming, wherein the slurry is injected into a forming spraying device, the thickness in each time of spraying is adjusted by adjusting the spraying pressure and the spraying gun moving speed, circular spraying is carried out on the inner wall of a mould through a mechanical arm till a set thickness is reached, and after spraying is finished, a crucible blank is taken out of the mould; sintering after the blank is dried, wherein the crucible blank is put into a sintering kiln to be subjected to heat preservation for 2-8 h at 1100-1200 DEG C. The manufacturing method has the advantages that the process is simple, the cost is low, and the inner surface of the quartz ceramic crucible is smooth.

Description

technical field [0001] The invention relates to the technical field of quartz ceramics, in particular to a method for manufacturing a quartz ceramic crucible. Background technique [0002] Quartz ceramics, also known as fused quartz ceramics, quartz glass ceramics, sintered quartz glass products, sintered fused silica products, are products prepared by using fused quartz or quartz glass as raw materials through a series of ceramic processes such as crushing, forming, and firing. In the early 1960s, it was first successfully developed by the United States and put into mass production. [0003] Quartz ceramics have excellent characteristics such as low cost, high softening temperature under high temperature load, small thermal expansion coefficient, good thermal stability, good chemical corrosion resistance, high dielectric property and high resistance. Due to its extremely low coefficient of thermal expansion, quartz ceramics have excellent thermal shock resistance, excellen...

Claims

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Application Information

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IPC IPC(8): C04B35/14C04B35/636B33Y40/00C30B28/06C30B29/06
CPCC30B28/06C30B29/06C04B35/14C04B35/6365B33Y40/00C04B2235/96C04B2235/95C04B2235/77C04B2235/6026
Inventor 邹亚静
Owner 邹亚静