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Preparation method of composite material for electromagnetic melting furnace heating element

A composite material and heating element technology, applied in the field of material technology, can solve the problems of low strength, shortened service life, large resistance, etc., and achieve the effect of high strength and extended service life

Inactive Publication Date: 2018-11-02
FOSHAN GAOJIE IND FURNACE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The heating element prepared by the existing preparation method, in practical application, has a very low heating efficiency due to the large amount of impurities and high resistance of the heating element, and because the electromagnetic melting furnace generally melts metal, the temperature of the heating element needs to be particularly high. At high temperature, while the existing heating element generates heat, because it cannot withstand high temperature, it is also melting itself, and its strength is not high, resulting in a greatly shortened service life, and the molten metal is also mixed with impurities.

Method used

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  • Preparation method of composite material for electromagnetic melting furnace heating element
  • Preparation method of composite material for electromagnetic melting furnace heating element
  • Preparation method of composite material for electromagnetic melting furnace heating element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Composite materials for heating elements of electromagnetic furnaces are composed of the following components by mass:

[0039]

[0040] Preparation method of composite material for heating element of electromagnetic furnace:

[0041] Weigh the stable crystal graphite, silicon carbide, nano silicon dioxide, aluminum silicate, aluminum oxide and boric acid of the component amount;

[0042] Put the stable crystal graphite, silicon carbide, nano-silica, aluminum silicate and alumina into the drying oven, the temperature in the drying oven is 135°C, and the drying time is 30 minutes;

[0043] Add the dried stabilized crystalline graphite, silicon carbide, nano silicon dioxide, aluminum silicate, aluminum oxide and boric acid into the ball mill respectively, and ball mill for 55 minutes;

[0044] Add the stabilized crystalline graphite, silicon carbide, nano silicon dioxide, aluminum silicate, aluminum oxide and boric acid powder after ball milling into the high mixer, t...

Embodiment 2

[0050] Composite materials for heating elements of electromagnetic furnaces are composed of the following components by mass:

[0051]

[0052] Preparation method of composite material for heating element of electromagnetic furnace:

[0053] Weighing the flake graphite, silicon carbide, fumed silica, aluminum silicate, aluminum oxide and portland cement of the component amount;

[0054] Put flake graphite, silicon carbide, fumed silica, aluminum silicate and alumina into the drying oven, the temperature in the drying oven is 132°C, and the drying time is 36 minutes;

[0055] Add the dried flake graphite, silicon carbide, fumed silica, aluminum silicate, alumina and portland cement into the ball mill respectively, and ball mill for 52 minutes;

[0056] Add the flake graphite, silicon carbide, fumed silica, aluminum silicate, alumina and Portland cement powder after ball milling into a high-speed mixer at a mixing speed of 410r / min for 9 minutes to obtain a mixture a;

[00...

Embodiment 3

[0062] Composite materials for heating elements of electromagnetic furnaces are composed of the following components by mass:

[0063]

[0064] Preparation method of composite material for heating element of electromagnetic furnace:

[0065] Steady crystal graphite, silicon carbide, nano silicon dioxide, aluminum silicate, aluminum oxide, boric acid and Portland cement are weighed;

[0066] Put the stable crystal graphite, silicon carbide, nano-silica, aluminum silicate and alumina into the drying oven, the temperature in the drying oven is 120°C, and the drying time is 50 minutes;

[0067] Add the dried stabilized crystalline graphite, silicon carbide, nano-silica, aluminum silicate, alumina, boric acid, and Portland cement into the ball mill respectively, and ball mill for 30 minutes;

[0068] Add the stabilized crystalline graphite, silicon carbide, nano-silica, aluminum silicate, alumina, boric acid and Portland cement powder into the high mixer after ball milling at a m...

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Abstract

The invention discloses a preparation method of a composite material for an electromagnetic melting furnace heating element. The method comprises the following steps of adding graphite, silicon carbide, silicon dioxide, aluminum silicate and aluminum oxide into a drying tank for drying; adding a dried material and an agglutinant into a ball mill separately for ball milling; adding a material afterball milling into a high-speed mixer for mixing to obtain a mixture a; sieving the mixture a to remove large-particle powder; enabling the mixture a to be formed into a green body by adopting a pouring method; and putting the formed green body in a furnace body for presintering; rising the temperature, performing sintering again, and then performing cooling to a room temperature to obtain the composite material. In the preparation method, by mainly taking the graphite and the silicon carbide as leading materials, as the resistance values of the graphite and the silicon carbide are reduced along with rise of the temperature, the heating efficiency is higher at high temperature; and in addition, compared with inorganic composite materials formed by other materials, the composite material ishigh in strength, resists high temperature and is greatly prolonged in service life.

Description

technical field [0001] The invention relates to the technical field of material technology, in particular to a preparation method of a composite material for a heating element of an electromagnetic melting furnace. Background technique [0002] The electromagnetic induction industrial furnace is under the action of the alternating electromagnetic field of the induction coil in the induction furnace, an eddy current is generated inside the heating element, the heating element generates heat, and the heating element transmits the heat to the metal object, thereby achieving the effect of heating or melting. [0003] The heating element prepared by the existing preparation method, in practical application, has a very low heating efficiency due to the large amount of impurities and high resistance of the heating element, and because the electromagnetic melting furnace generally melts metal, the temperature of the heating element needs to be particularly high. At high temperature,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/52
CPCC04B35/522C04B35/66C04B2235/3217C04B2235/3409C04B2235/3418C04B2235/3427C04B2235/3463C04B2235/3826C04B2235/96
Inventor 邱泽坚邱嵘熙张茗贵
Owner FOSHAN GAOJIE IND FURNACE CO LTD