CN1410391A - Silicon carbide refractory ceramic material for rotary spray head - Google Patents
Silicon carbide refractory ceramic material for rotary spray head Download PDFInfo
- Publication number
- CN1410391A CN1410391A CN 02145321 CN02145321A CN1410391A CN 1410391 A CN1410391 A CN 1410391A CN 02145321 CN02145321 CN 02145321 CN 02145321 A CN02145321 A CN 02145321A CN 1410391 A CN1410391 A CN 1410391A
- Authority
- CN
- China
- Prior art keywords
- silicon carbide
- rotary nozzle
- silicon
- ceramic material
- spray head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Ceramic Products (AREA)
Abstract
A refractory silicon carbide ceramics used for rotary nozzle of rotary sprayer contains 2.5-1.43 silicon carbide (18-22 wt.%), 14-36 silicon carbide (26-35 %), 36-0 silicon carbide (10-18%), 240-mesh silicon carbide (15-25 %), Guangxi mud or/and Suzhou earth (0-10%) and silicon microparticles (0-10%). Its advantages are high resistances to high-temp. oxidization, heat shock, slag corrosion and wearing, long service life and little pollution to molten aluminium.
Description
Technical field
What the present invention relates to is a kind of silicon carbide refractory ceramics material, and particularly a kind of silicon carbide refractory ceramics material that is used for rotary nozzle belongs to stupalith and pureization of molten aluminium process field.
Background technology
The rotary nozzle that is used for aluminum melt degassing when molten aluminium is carried out degassing processing, must stretch into it molten aluminium inside and be in rotating state, and be intermittently used.Therefore, for the material of rotary nozzle certain requirement is arranged, it must satisfy: high temperature resistant, do not pollute aluminium liquid, and have wear resistance, solidity to corrosion, heat-shock resistance etc.At present, adopt the material of graphite mostly as rotary nozzle, this material satisfies above requirement substantially, but in industrial application, find, the work-ing life of graphite rotary nozzle is very short, easily weares and teares, peels off in the place that contacts with air, slag blanket, " necking down " phenomenon occurs, rotor diameter is more and more littler, scraps until fracture.Analyzing its reason, mainly is because the acting in conjunction of washing away erosion and thermal stresses of high temperature oxidation, slag blanket causes.Find by literature search; the Yang Changhe of Dalian University of Technology; people such as Sun Jun are at " Special Processes of Metal Castings and non-ferrous alloy " 1999 the 2nd phase P7-9; and " light alloy processing technology " write articles " aluminium melt purifying with the research of graphite rotator coating " in 1998 the 1st and reach " damage mechanism of graphite rotator and the prolongation measure in its work-ing life " on the phase P4-7; these two pieces of articles are to the damage mechanism of rotary nozzle in the aluminum melt degassing process; and proposed to utilize coating protection to defend the doctrine to improve the thinking in rotary nozzle life-span; coating can prevent effectively that high temperature oxidation from also may improve its wear resistance; but because the difference of coating and graphite matrix expanded by heating, the coating on rotary nozzle surface is in use easily peeled off.Therefore must repair it termly, bring very big influence, and the coating of peeling off brings external inclusion can for aluminium liquid to production efficiency.
Summary of the invention
The present invention is directed to the deficiencies in the prior art and defective, a kind of silicon carbide refractory ceramics material that is used for rotary nozzle is provided, make it to have good high-temperature oxidation, wear resistance, anti-scouring and thermal shock resistance have good market outlook.The present invention is achieved through the following technical solutions, it is aggregate that the present invention adopts silicon carbide, adopt Guangxi mud or/and Suzhou soil as binding agent, its each weight percent of forming is: 2.5-1.43 silicon carbide: 18-22%, 14-36 silicon carbide: 26-35%, 36-0 silicon carbide: 10-18%, 240 order silicon carbide: 15-25%, Guangxi mud: 0-10% is or/and Suzhou soil: 0-10%, and silicon particle: 0-10% adds 5% calcium lignosulfonate solution.
Screening formulation of the present invention is: 2.5-1.43 silicon carbide: 20%, and 14-36 silicon carbide: 30%, 36-0 silicon carbide: 15%, 240 order silicon carbide: 20%, Guangxi mud: 10%, silicon particle: 5%, add calcium lignosulfonate solution: 5%.
The present invention adopts traditional refractory ceramic material preparation technology, is grouped into by above one-tenth and fills a prescription, and is dry-pressing formed under 30Mpa, 110 ℃ of following heat preservation and drynesses 11 hours, carries out sintering then in sintering oven after the moulding, and sintering schedule is: 1450 ℃/3h.
The present invention has substantive distinguishing features and marked improvement, and it is strong that silicon carbide refractory ceramics material has a high temperature oxidation resistance, good thermal shock, features such as the slag corrosion resistance ability is strong, and wear resistance is good are compared with traditional graphite rotary nozzle, have long service life, aluminium liquid is polluted advantages such as little.The rotary nozzle that material of the present invention is selected and prescription is used for removing hydrogen from aluminum melt has been opened up new starting material, the rotary nozzle that the optimization of C that utilizing is provided is produced, has good wear resistance, anti-scouring and thermal shock resistance, make bring up to more than 2 months the work-ing life of rotary nozzle, have good market outlook and commercial value.
Embodiment
The present invention is further illustrated below in conjunction with specific embodiment:
Embodiment 1:
Material is formed weight percent: 20%2.5-1.43 silicon carbide, and 30%14-36 silicon carbide, 15%36-0 silicon carbide, 20%240 order silicon carbide, 10% Guangxi mud, 5% silicon particle adds 5% calcium lignosulfonate solution.
Performance: the heat stability (1100 ℃ of water-cooleds) of shaking: 30 times; High temperature oxidation resistance (rising to 1200 ℃ of quality change percentage behind the insulation 20h): 0.3% with 300 ℃/h; Corrosion stability (mass change in 750 ℃ of slag liquid behind the static immersing 5h): 3%.
This prescription has good comprehensive fire performance for preferred result.
Embodiment 2:
Material is formed weight percent: 18%2.5-1.43 silicon carbide, and 26%14-36 silicon carbide, 18%36-0 silicon carbide, 18%240 order silicon carbide, 4% Suzhou soil, 6% Guangxi mud, 10% silicon particle adds 5% calcium lignosulfonate solution.
Performance: the heat stability (1100 ℃ of water-cooleds) of shaking: 28 times; High temperature oxidation resistance (rising to 1200 ℃ of quality change percentage behind the insulation 20h): 0.5% with 300 ℃/h; Corrosion stability (mass change in 750 ℃ of slag liquid behind the static immersing 5h): 5%.
The comprehensive fire performance of this prescription is better.
Embodiment 3:
Material is formed weight percent: 20%2.5-1.43 silicon carbide, and 30%14-36 silicon carbide, 10%36-0 silicon carbide, 25%240 order silicon carbide, 5% Suzhou soil, 5% Guangxi mud, 5% silicon particle adds 5% calcium lignosulfonate solution.
Performance: the heat stability (1100 ℃ of water-cooleds) of shaking: 25 times; High temperature oxidation resistance (rising to 1200 ℃ of quality change percentage behind the insulation 20h): 0.5% with 300 ℃/h; Corrosion stability (mass change in 750 ℃ of slag liquid behind the static immersing 5h): 6%.
The comprehensive fire performance of this prescription is better.
Embodiment 4:
Material is formed weight percent: 22%2.5-1.43 silicon carbide, and 35%14-36 silicon carbide, 18%36-0 silicon carbide, 15%240 order silicon carbide, 10% Suzhou soil adds 5% calcium lignosulfonate solution.
Performance: the heat stability (1100 ℃ of water-cooleds) of shaking: 23 times; High temperature oxidation resistance (rising to 1200 ℃ of quality change percentage behind the insulation 20h): 0.7% with 300 ℃/h; Corrosion stability (mass change in 750 ℃ of slag liquid behind the static immersing 5h): 7.5%.
This prescription does not add silicon particle, and comprehensive fire performance is relatively poor with respect to embodiment 1,2,3.
Claims (2)
1. silicon carbide refractory ceramics material that is used for rotary nozzle, it is characterized in that: employing silicon carbide is aggregate, adopt Guangxi mud and Suzhou soil as binding agent, its each weight percent of forming is: 2.5-1.43 silicon carbide: 18-22%, 14-36 silicon carbide: 26-35%, 36-0 silicon carbide: 10-18%, 240 order silicon carbide: 15-25%, Guangxi mud: 0-10% is or/and Suzhou soil: 0-10%, and silicon particle: 0-10% adds 5% calcium lignosulfonate solution.
2, this silicon carbide refractory ceramics material that is used for rotary nozzle according to claim 1, it is characterized in that screening formulation is: silicon carbide: 20%2.5-1.43,14-36 silicon carbide: 30%, 36-0 silicon carbide: 15%, 20%240 order silicon carbide, Guangxi mud: 10%, silicon particle: 5%, calcium lignosulfonate solution: 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02145321 CN1410391A (en) | 2002-11-21 | 2002-11-21 | Silicon carbide refractory ceramic material for rotary spray head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02145321 CN1410391A (en) | 2002-11-21 | 2002-11-21 | Silicon carbide refractory ceramic material for rotary spray head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1410391A true CN1410391A (en) | 2003-04-16 |
Family
ID=4750851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02145321 Pending CN1410391A (en) | 2002-11-21 | 2002-11-21 | Silicon carbide refractory ceramic material for rotary spray head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1410391A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386542B (en) * | 2008-10-14 | 2012-07-04 | 山东科技大学 | SiC refractory materials and producing method thereof |
| CN105130400A (en) * | 2015-10-14 | 2015-12-09 | 德化恒忆陶瓷艺术股份有限公司 | Gauze porcelain clay formula and firing technology |
| CN107421117A (en) * | 2017-06-30 | 2017-12-01 | 翟延军 | A kind of SiC ceramic coil pipe hot-blast stove and preparation method thereof |
| CN109503171A (en) * | 2018-12-18 | 2019-03-22 | 宜兴高等职业技术学校 | A kind of silicon nitride combined silicon carbide brick and preparation method thereof |
-
2002
- 2002-11-21 CN CN 02145321 patent/CN1410391A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386542B (en) * | 2008-10-14 | 2012-07-04 | 山东科技大学 | SiC refractory materials and producing method thereof |
| CN105130400A (en) * | 2015-10-14 | 2015-12-09 | 德化恒忆陶瓷艺术股份有限公司 | Gauze porcelain clay formula and firing technology |
| CN105130400B (en) * | 2015-10-14 | 2018-03-06 | 德化恒忆陶瓷艺术股份有限公司 | Tulle porcelain china clay formula and burning process |
| CN107421117A (en) * | 2017-06-30 | 2017-12-01 | 翟延军 | A kind of SiC ceramic coil pipe hot-blast stove and preparation method thereof |
| CN107421117B (en) * | 2017-06-30 | 2018-07-06 | 翟延军 | A kind of SiC ceramic coil pipe hot-blast stove and preparation method thereof |
| CN109503171A (en) * | 2018-12-18 | 2019-03-22 | 宜兴高等职业技术学校 | A kind of silicon nitride combined silicon carbide brick and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102634705B (en) | Middle high strength aluminum alloy capable of reducing quench sensitivity, production process thereof and profile process method | |
| CN1932082A (en) | Fast laser depositing process of preparing antinwear heat resistant composite coating on surface of crystallizer | |
| CN105483440A (en) | Environment-friendly type preparation method for automobile engine blade | |
| CN105618679A (en) | Preparation method for automobile charging turbine | |
| CN104404430A (en) | Iron-based non-crystalline composite coating for protecting heat exchange pipes in flue gas waste heat recovery system of power station boiler and laser re-melting and moulding technology thereof | |
| CN105506377A (en) | Environment-friendly type manufacturing method for car supercharging turbine | |
| CN111020322A (en) | High-strength high-toughness aluminum-lithium alloy plate for aerospace and manufacturing method thereof | |
| CN103614687A (en) | Preparation technique of continuous casting crystallizer copper plate surface cermet coating | |
| CN113105115A (en) | High-temperature-resistant enamel-based composite coating with self-repairing function and preparation method thereof | |
| CN101270414A (en) | Rotary blowing rotor produced with combination of plumbago and ceramic | |
| CN1410391A (en) | Silicon carbide refractory ceramic material for rotary spray head | |
| CN114717456A (en) | High-temperature soluble aluminum alloy, preparation method and application | |
| CN101492799A (en) | Wear-resistant cast iron coating and production method | |
| CN112589092A (en) | High-temperature phase change heat storage composite material and preparation method thereof | |
| CN1188539C (en) | Aluminium base amorphous/nano multiphase materials and its preparing method | |
| CN111575630B (en) | Concrete surface protection treatment method based on plasma thermal spraying technology | |
| CN1235702C (en) | Zinc liquid corrosion-resistant coating and use method thereof | |
| CN101701602A (en) | Flange shaft sleeve and manufacturing method thereof | |
| CN101733392B (en) | Technology for casting copper alloy under non-vacuum conditions by adding zirconium | |
| CN111197150A (en) | Rare earth yttrium zinc aluminum magnesium alloy coating and preparation method thereof | |
| CN101733591A (en) | Method for manufacturing bright aluminum alloy welding wire | |
| CN105112843A (en) | Corrosion-resistant thermal barrier coating and preparation method thereof | |
| CN111118363A (en) | High-compression-resistance rapidly-degradable magnesium alloy and preparation method thereof | |
| CN114752827B (en) | Low-temperature soluble aluminum alloy and application thereof | |
| CN107587131B (en) | Molten zinc corrosion resistant SiO2Preparation method of/NbCrMn ceramic-metal composite coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |