CN101261077B - Ceramic crucible for microwave heating molten metal - Google Patents
Ceramic crucible for microwave heating molten metal Download PDFInfo
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- CN101261077B CN101261077B CN2007101510247A CN200710151024A CN101261077B CN 101261077 B CN101261077 B CN 101261077B CN 2007101510247 A CN2007101510247 A CN 2007101510247A CN 200710151024 A CN200710151024 A CN 200710151024A CN 101261077 B CN101261077 B CN 101261077B
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- molten metal
- ceramic crucible
- microwave heating
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- copple
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Abstract
The invention provides a ceramic copple for microwave heating and melting metal, belonging to the advanced ceramic technical field. The copple adopts the sub-micron and the micro-sized stabilized zirconia powder to form certain grain composition; the component of La-monazite is added, the pulp is made by the ball milling and mixing and the copple shape is formed by grunting and is baked at a temperature of 1600 to 1700 DEG C. The copple has the advantages of heat resistance performance, heat insulation performance and resistance to heat shocks, is not stuck with high temperature molten metal and has the function of microwave absorption.
Description
Technical field
The invention belongs to the technical field of advanced ceramics; Be particularly related to a kind of zirconia ceramics crucible that is used for microwave heating molten metal.
Background technology
Steel-making, metallurgical, the chemical examination of industries such as casting, detections etc. often need metal molten, traditional way is that the sample piece with metal or metallic components is placed in the ceramic crucible, traditional heating mode such as use high-temperature electric resistance furnace melt it, the shortcoming of these class methods is that the cycle is long, the energy consumption height, the heating using microwave alloying technology of development in recent years, can effectively reduce the fusing cycle, shorten fusing time, but because firing rate is fast, traditional ceramics crucible resistance to sudden heating can meet the demands, for improving the thermal shock resistance that ceramic crucible arrives, need to increase the porosity of crucible, this but can cause the problem of crucible and molten metal adhesion.
Summary of the invention
For overcoming the deficiency in the above-mentioned technical background, the present invention proposes a kind of new ceramic crucible material and preparation method thereof, has both heat-resisting, heat insulation, heat shock resistance, the adhesion molten metal has the microwave absorption function again.
The crucible that the present invention relates to adopts sub-micron and micron order oxide-stabilizing zirconia powder, forms the certain granules grating, and adds the lanthanum orthophosphate component, and ball milling mixed pulp, injection forming become the crucible shape then, burn till through 1600-1700 ℃ of high temperature.
The stabilizing agent of aforementioned stable Zirconium powder can be contain that oxidation is recalled, cerium oxide, magnesia or stable calcium oxide agent one or more, stabiliser content is at 8-20mol%.
The situation of above-mentioned certain granules grating is: following granularity zirconia of 1 μ m and the zirconic weight ratio of 20-60 μ m granularity are 7: 3 to 9: 1.
The granularity of above-mentioned lanthanum orthophosphate component is 0.5-2 μ m.
The weight ratio of above-mentioned zirconia and lanthanum orthophosphate is 7: 3 to 9: 1.
In above-mentioned casting process, need in the slurry to add the 0.1-0.5wt% dispersant, the dispersant kind can be carboxymethyl cellulose, PAM, polyethylene glycol, one or more mixtures of lignin.
In above-mentioned casting process, injection forming slip water content is at 20-40wt%.
In above-mentioned casting process, the injection forming mould adopts gypsum mold, and cream water weight ratio example adopts 100: 60-80.
The ceramic crucible that is used for microwave heating molten metal that the present invention proposes and the good effect of other ceramic crucible are:
Zirconia self zirconium oxygen key is strong, the adhesion high-temperature liquid metal; High temperature resistant, thermal conductivity factor is low, can guarantee its high temperature insulating insulation effect; Adopt the different grain size grating to guarantee certain thermal shock resistance; Add the lanthanum orthophosphate component,, can guarantee the whole high thermal shock resistance of maintenance under the high-compactness situation, prevent that effectively high-temperature liquid metal is along the immersion of pore to crucible because lanthanum orthophosphate has the microstructure layer laminated structure; Simultaneous oxidation zirconium low temperature has the ability of certain absorption microwave energy, and improves with temperature rising microwave absorption capacity; The present invention's ceramic crucible of being used for microwave heating molten metal has both heat-resisting, heat insulation, heat shock resistance thus, the adhesion molten metal has the multi-functional that microwave absorbs again.
The specific embodiment
The largest particles is less than 6.4 kilograms of the zirconias of 1 μ m, particle mean size 0.6 μ m, 1.6 kilograms of the zirconias of 20-60 μ m, particle mean size 46 μ m, particle mean size is 2 kilograms of 1 μ m lanthanum orthophosphates, carboxymethyl cellulose 200 grams, 3 kilograms in water carries out ball milling and mixed 4 hours, injects 100: 70 gypsum mold of cream water weight ratio example, mould diameter is 100 millimeters, 150 millimeters of height; After suction is starched 8 millimeters surplus slurry is derived, treat to take out from mould behind the body drying, 1600 ℃ were burnt till 4 hours in high temperature furnace, with stove cooling back acquisition ceramic crucible.This crucible can directly carry out the fusing of metals such as steel, iron, aluminium, copper under microwave heating condition, fusion process do not burst, with environment good heat-insulation effect, and adhesion high-temperature metal.
Claims (2)
1. ceramic crucible that is used for microwave heating molten metal, it is characterized in that, the largest particles is less than 6.4 kilograms of the zirconias of 1 μ m, particle mean size 0.6 μ m, the zirconia 1.6 public Rooms of 20-60 μ m, particle mean size 46 μ m, and particle mean size is 2 kilograms of 1 μ m lanthanum orthophosphates, carboxymethyl cellulose 200 grams, 3 kilograms in water carries out ball milling and mixed 4 hours, injects 100: 70 gypsum mold of cream water weight ratio example, mould diameter is 100 millimeters, 150 millimeters of height; After suction is starched 8 millimeters surplus slurry is derived, treat to take out from mould behind the body drying, 1600 ℃ were burnt till 4 hours in high temperature furnace, with stove cooling back acquisition ceramic crucible.
2. according to the described ceramic crucible that is used for microwave heating molten metal of claim 1, it is characterized in that the granularity of described lanthanum orthophosphate component is 0.5-2 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101510247A CN101261077B (en) | 2007-12-14 | 2007-12-14 | Ceramic crucible for microwave heating molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101510247A CN101261077B (en) | 2007-12-14 | 2007-12-14 | Ceramic crucible for microwave heating molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101261077A CN101261077A (en) | 2008-09-10 |
| CN101261077B true CN101261077B (en) | 2010-04-14 |
Family
ID=39961682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101510247A Expired - Fee Related CN101261077B (en) | 2007-12-14 | 2007-12-14 | Ceramic crucible for microwave heating molten metal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101261077B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173832A (en) * | 2011-01-10 | 2011-09-07 | 宜昌浩诚工贸有限公司 | Microwave sintering method of clay-graphite crucible |
| CN103936436B (en) * | 2014-03-27 | 2016-01-20 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of yttrium stable zirconium oxide refractory product of gradient function |
| CN104860686A (en) * | 2015-04-14 | 2015-08-26 | 上海大学 | Method for preparing magnesia-stabilized zirconia crucible through casting molding |
| CN109516802B (en) * | 2018-12-10 | 2021-09-21 | 江苏省陶瓷研究所有限公司 | Zirconia crucible for precision casting and heat treatment method thereof |
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2007
- 2007-12-14 CN CN2007101510247A patent/CN101261077B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101261077A (en) | 2008-09-10 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100414 Termination date: 20101214 |