A kind of corundum crucible and preparation method thereof

A corundum crucible and corundum technology, which is applied in the field of induction furnaces, can solve the problems of high cost and low service life, and achieve the effects of stable use, long service life, and guaranteed yield and performance

Active Publication Date: 2022-06-03
SHANDONG VOCATIONAL COLLEGE OF IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the service life of the induction furnace crucible is low, and the imported products are generally about 100 furnaces, and the cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 3.3.1 Size tolerance: according to the relevant regulations of the user;

[0046] 4.3 The crucible finished product has a white appearance, uniform wall thickness, no cracks and no spots.

Embodiment 2

[0060] 3.3.1 Size tolerance: according to the relevant regulations of the user;

[0065] 4.3 The crucible finished product is white in appearance, with uniform wall thickness, no cracks and no spots.

Embodiment 3

[0079] 3.3.1 Size tolerance: according to the relevant regulations of the user;

[0084] 4.3 The shape of the finished crucible is white, the wall thickness is uniform, and there is no crack or spot.

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PUM

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Abstract

A corundum crucible and a preparation method thereof belong to the technical field of induction furnaces. It is characterized in that the composition of raw materials by weight is: 60-70 parts of corundum, 20-25 parts of spinel, 3-8 parts of activated alumina, 2-5 parts of fused magnesia, 5-10 parts of andalusite, binder 5~8 servings. The SiO formed by the decomposition of andalusite introduced in the corundum crucible of the present invention 2 Al with fine powder of corundum sand and fine alumina powder 2 o 3 The mullite network formed by reaction sintering is interspersed between the alumina aggregates, which improves the thermal shock and strength of the product. The introduction of alumina micropowder and andalusite micropowder advances the mullitization temperature to less than 1000°C, and the product has strong medium and high temperature strength. The spinel introduced in the matrix and the spinel formed in situ enhance the erosion resistance and permeability resistance of the alkaline slag.

Description

A kind of corundum crucible and preparation method thereof technical field [0001] A corundum crucible and preparation method thereof belong to the technical field of induction furnaces. Background technique [0002] With the development of domestic induction furnaces toward high efficiency, rapid melting, and large-scale development, the requirements for furnace lining materials are becoming more and more demanding. carve. Crucible is an important part of high-temperature induction furnace in precision casting industry, and it is a container for melting and refining molten steel. Crucible long term In direct contact with high temperature molten steel, slag and gas, it is easy to be damaged by erosion, and the molten steel will be polluted. Smelting metal is an intermittent operation During the operation process, the crucible is periodically subjected to heating and cooling, which is prone to cracks or even peeling, resulting in steel infiltration and damage. because ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/626
CPCC04B35/10C04B35/622C04B35/62605C04B2235/3222C04B2235/3217C04B2235/3206C04B2235/3481C04B2235/602C04B2235/6567C04B2235/77C04B2235/96C04B2235/9607Y02P10/20
Inventor 孙华云
Owner SHANDONG VOCATIONAL COLLEGE OF IND
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