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Magnesium aluminate spinel crucible for high-temperature alloy and preparation method thereof

A magnesia-aluminum spinel and superalloy technology, applied in the field of refractory materials, can solve the problems of short life, poor corrosion resistance, poor thermal shock stability of corundum crucible, etc., and achieve buffer diffusion speed, high thermal shock resistance and corrosion resistance. performance, the effect of avoiding abnormal grain growth

Inactive Publication Date: 2020-07-10
山东铭特陶瓷材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor thermal shock stability, corrosion resistance and short service life of corundum crucibles for intermediate frequency furnaces used in existing non-ferrous metal smelting, the present invention provides a magnesium-aluminum spinel crucible for high-temperature alloys and a preparation method thereof. The service life can reach more than 100 heats at the operating temperature not higher than 1300°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A magnesium-aluminum spinel crucible for superalloys, comprising the following raw materials in parts by weight:

[0033] 15 parts of magnesium aluminum spinel particles, 8 parts of magnesium aluminum spinel powder, 12 parts of SiC particles, 14 parts of SiC powder, 18 parts of graphite, 6 parts of antioxidant and 5 parts of binder, of which,

[0034] The particle size of magnesium aluminum spinel particles is 1mm-3mm, and the particle size of magnesium aluminum spinel powder is 325 mesh.

[0035] The particle size of SiC particles is 12-40 mesh, the particle size of SiC powder is 325 mesh,

[0036] Antioxidants include boron carbide and ferrophosphorus, the mass ratio of boron carbide and ferrophosphorus is 1:1,

[0037] The binding agent is phenolic resin;

[0038] The preparation method of the magnesium-aluminum spinel crucible for the superalloy comprises the following steps:

[0039] (1) put each raw material in the mixer by weight ratio, stir for 25 minutes to ...

Embodiment 2

[0046] A magnesium-aluminum spinel crucible for superalloys, comprising the following raw materials in parts by weight:

[0047] 28 parts of magnesium aluminum spinel particles, 18 parts of magnesium aluminum spinel powder, 35 parts of SiC particles, 26 parts of SiC powder, 40 parts of graphite, 9 parts of antioxidant and 14 parts of binder, of which,

[0048] The particle size of magnesium aluminum spinel particles is 1mm-3mm, and the particle size of magnesium aluminum spinel powder is 325 mesh.

[0049] The particle size of SiC particles is 12-40 mesh, the particle size of SiC powder is 325 mesh,

[0050] Antioxidants include boron carbide and ferrophosphorus, the mass ratio of boron carbide and ferrophosphorus is 1:1,

[0051] The binding agent is phenolic resin;

[0052] The preparation method of the magnesium-aluminum spinel crucible for the superalloy comprises the following steps:

[0053] (1) put each raw material into the blender by weight ratio, stir for 40 minut...

Embodiment 3

[0060] A magnesium-aluminum spinel crucible for superalloys, comprising the following raw materials in parts by weight:

[0061] 20 parts of magnesium aluminum spinel particles, 12 parts of magnesium aluminum spinel powder, 25 parts of SiC particles, 18 parts of SiC powder, 30 parts of graphite, 8 parts of antioxidant and 12 parts of binder, of which,

[0062] The particle size of magnesium aluminum spinel particles is 1mm-3mm, and the particle size of magnesium aluminum spinel powder is 325 mesh.

[0063] The particle size of SiC particles is 12-40 mesh, the particle size of SiC powder is 325 mesh,

[0064] Antioxidants include boron carbide and ferrophosphorus, the mass ratio of boron carbide and ferrophosphorus is 1:1,

[0065] The binding agent is phenolic resin;

[0066] The preparation method of the magnesium-aluminum spinel crucible for the superalloy comprises the following steps:

[0067] (1) put each raw material into the blender by weight ratio, stir for 40 minut...

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Abstract

The invention relates to the technical field of refractory materials. The magnesium aluminate spinel crucible for the high-temperature alloy comprises the following raw materials: magnesium aluminatespinel, SiC, graphite, an antioxidant and a binding agent, the magnesium aluminate spinel comprises magnesium aluminate spinel particles and magnesium aluminate spinel powder, and the SiC comprises SiC particles and SiC powder; the method comprises the following steps: putting the raw materials into a stirrer according to a weight ratio, and stirring to obtain pug; putting the stirred pug into a sealed container for ageing; putting the aged pug into a rubber mold, putting the rubber mold into an isostatic pressing machine, and carrying out pressure molding to obtain a semi-finished product; putting the formed semi-finished product into a drying kiln to be dried; and putting the dried semi-finished product into a firing kiln, and firing to obtain the finished crucible. The crucible disclosed by the invention has high thermal shock resistance and high erosion resistance, and the service life of the crucible at the use temperature of not higher than 1300 DEG C can reach 100 heat times orabove.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a magnesium-aluminum spinel crucible for high-temperature alloys and a preparation method thereof. Background technique [0002] Nonferrous metals refer to all metals except iron, chromium and manganese, including aluminum, magnesium, potassium, sodium, calcium, strontium, barium, copper, lead, zinc, tin, cobalt, nickel, antimony, mercury and cadmium , bismuth, gold, silver, platinum, ruthenium, rhodium, palladium, osmium, iridium, beryllium, lithium, rubidium, cesium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, tungsten, molybdenum, gallium, indium, thallium, germanium , rhenium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium, thorium. Non-ferrous metals are the basic materials for the development of the national economy. Most industries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/567C04B35/622C04B38/00F27B14/10
CPCC04B35/565C04B35/622C04B35/66C04B38/0041F27B14/10C04B2235/3222C04B2235/3206C04B2235/425C04B2235/3821C04B2235/405C04B2235/5427C04B2235/5436C04B2235/656C04B2235/6567C04B2235/9607C04B2235/9669C04B38/0074
Inventor 蔡伟殷若光孙华云李明京蔡衍坤殷佩如
Owner 山东铭特陶瓷材料有限公司
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