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Knotting and fixing method of graphite crucible for vacuum induction melting furnace

A technology for vacuum melting furnaces and graphite crucibles, which is applied to crucible furnaces, furnaces, furnace types, etc., can solve the problems of delaying work efficiency, knotted materials cannot be reused, and consumes materials, so as to improve the efficiency of knotting and dismantling furnaces, Low-cost, easy-to-produce effects

Active Publication Date: 2017-03-15
RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a vacuum intermediate frequency furnace using a graphite crucible as a melting crucible, the service life of the knotted and fixed crucible material is limited by the graphite crucible. Once the graphite crucible is cracked and cannot be used normally, the knotted material needs to be removed and knotted again.
The disassembled knotting material cannot be reused, it can only be discarded
This method not only consumes a lot of materials, but also delays work efficiency.

Method used

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  • Knotting and fixing method of graphite crucible for vacuum induction melting furnace
  • Knotting and fixing method of graphite crucible for vacuum induction melting furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Adopt above-mentioned method to 200 kilograms of vacuum smelting furnaces tie knot and fix with graphite crucible, concrete steps are as follows:

[0032] 1) Place the aluminum oxide ceramic brick with a radius of 21 cm and a height of 9 cm on the bottom of the coil;

[0033] 2) Use a layer of ceramic fiber cloth to surround the inside of the coil;

[0034] 3) Calcium partially stabilized zirconia ceramic square bricks are tightly arranged at the bottom of the coil with a thickness of 9 cm, and the side is arranged with a thickness of 3 cm, and the distance from the top of the coil is 10 cm;

[0035] 4) Add alumina as the main knotting material on the zirconia ceramic tiles, and the knots are dense and the thickness is 6 cm;

[0036] 5) Put the graphite crucible into the coil at the same distance from the coil;

[0037] 6) Add a knotting material between the graphite crucible and the ceramic square brick, and use a thin steel braze to knot it tightly;

[0038] 7) At ...

Embodiment 2

[0041] Adopt above-mentioned method to 200 kilograms of vacuum smelting furnaces tie knot and fix with graphite crucible, concrete steps are as follows:

[0042] 1) Place the aluminum oxide ceramic brick with a radius of 21 cm and a height of 12 cm on the bottom of the coil;

[0043] 2) Use a layer of ceramic fiber cloth to surround the inside of the coil;

[0044] 3) Calcium partially stabilized zirconia ceramic square bricks are tightly arranged at the bottom of the coil with a thickness of 6 cm, and the side is arranged with a thickness of 3 cm, and the distance from the top of the coil is 10 cm;

[0045] 4) Add alumina as the main knotting material on the zirconia ceramic tiles, and the knots are dense and the thickness is 6 cm;

[0046] 5) Put the graphite crucible into the coil at the same distance from the coil;

[0047] 6) Add a knotting material between the graphite crucible and the ceramic square brick, and tie the knot with a steel braze;

[0048] 7) At the posit...

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Abstract

The invention relates to the field of vacuum metallurgy, in particular to a graphite crucible knotting and fixing method for a vacuum induction melting furnace. A material for fixing and supporting a graphite crucible comprises three layers of structures. The first layer is a round aluminum oxide ceramic pad resistant to high temperature. The second layer is paved by regular hexagonal zirconia ceramic quadrels which are resistant to high temperature. The third layer is close to the graphite crucible and is formed by means of ramming granular and powdered knotting materials which are resistant to high temperature. By the aid of the graphite crucible knotting and fixing method, efficiencies for knotting and demounting the crucible are improved, and required materials for knotting and fixing the graphite crucible can be saved.

Description

technical field [0001] The invention relates to the field of vacuum metallurgy, in particular to a method for knotting and fixing a graphite crucible for a vacuum induction melting furnace. Background technique [0002] Vacuum smelting technology is one of the important methods for purifying metals. Its superiority is that it can significantly remove impurities whose saturated vapor pressure is higher than that of the metal to be purified, and has good degassing effect and strong deoxidation ability. Some nitrides and Hydrides can be thermally decomposed. However, in a vacuum intermediate frequency furnace using a graphite crucible as a melting crucible, the service life of the knotted and fixed crucible material is limited by the graphite crucible. Once the graphite crucible cracks and cannot be used normally, the knotted material needs to be removed and knotted again. The removed knotting material cannot be reused and must be discarded. This method both consumes a large ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B14/10
Inventor 刘仁源洪礼清陈烨坚
Owner RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD