CN106270529A - A kind of high temperature resistant shock resistance ceramic-seal ring and preparation method thereof - Google Patents
A kind of high temperature resistant shock resistance ceramic-seal ring and preparation method thereof Download PDFInfo
- Publication number
- CN106270529A CN106270529A CN201610656118.9A CN201610656118A CN106270529A CN 106270529 A CN106270529 A CN 106270529A CN 201610656118 A CN201610656118 A CN 201610656118A CN 106270529 A CN106270529 A CN 106270529A
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- Prior art keywords
- seal ring
- high temperature
- powder
- shock resistance
- temperature resistant
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
- B22F5/106—Tube or ring forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
Abstract
The invention discloses a kind of high temperature resistant shock resistance ceramic-seal ring, it is to be prepared by the raw material of following weight parts: silicon carbide micro-powder 80 90, Ni60 nickel chromium triangle borosilicate alloyed powder 5 10, lanthana 35, aluminum nitrate 34, ammonium molybdate 0.5 1, Lithium metaniobate 0.5 1, thiourea 68, EVA emulsion 0.5 1, CTAB 0.01 0.015, polyvinylpyrrolidone 1 1.5, nanometer tantalum carbide 12.The ceramic-seal ring of the present invention has the friction of excellence, impact resistance, can keep good impact resistance simultaneously under the high temperature conditions, suitably use under worst hot case, and good reliability, service life is long.
Description
Technical field
The present invention relates to seal ring material technical field, particularly relate to a kind of high temperature resistant shock resistance ceramic-seal ring and system thereof
Preparation Method.
Background technology
Mechanical seal is the gland seal device of a kind of rotating machinery, is widely used in centrifugal pump, centrifuge, reactor and compression
The equipment such as machine.Sealing ring is the main element constituting mechanical seal.The working condition of sealing ring determines making of mechanical seal
With performance and life-span, and the performance of seal ring material directly affects the working condition of sealing ring.In general, mechanical seal ring should
There is low-density, hypotonicity and good friction, impact resistance and processing characteristics.
The density of carborundum is low, coefficient of friction is low, hardness is high, possesses the superperformance required by mechanical seal, therefore by
It is widely used in mechanical seal field.But, silicon carbide ceramics has that to be difficult to densified sintering product, bending strength and fracture toughness relatively low
Problem, cause it in use to ftracture, premature failure, service life shorten, thus limit its machinery close
The application in envelope field.Patent 200710127712.X utilize rod type alumina particle as toughening element ceramics of silicon carbide toughened,
But alumina particle is prone to assemble, dispersing uniformity is poor, destroys material structure, and homogeneity and frictional behaviour to product produce
Harmful effect.Therefore, how while sealing ring is carried out reinforcing and toughening, it is ensured that the stable homogeneous of product and good
Frictional behaviour, improves dependability, has become as the key of solution problem.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of have good toughness and frictional property concurrently
High temperature resistant shock resistance ceramic-seal ring of energy and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of high temperature resistant shock resistance ceramic-seal ring, it is to be prepared by the raw material of following weight parts:
Silicon carbide micro-powder 80-90, Ni60 nickel chromium triangle borosilicate alloyed powder 5-10, lanthana 3-5, aluminum nitrate 3-4, ammonium molybdate 0.5-1, niobium
Acid lithium 0.5-1, thiourea 6-8, EVA emulsion 0.5-1, CTAB 0.01-0.015, polyvinylpyrrolidone
1-1.5, nanometer tantalum carbide 1-2.
The preparation method of a kind of high temperature resistant shock resistance ceramic-seal ring, comprises the following steps:
(1) complete by adding stirring and dissolving in the water of 20-25 times of weight after aluminum nitrate, ammonium molybdate mixing, then with thiourea, 16
Alkyl trimethyl amine bromide is sufficiently mixed, and pH is adjusted to 3-4 and adds in the autoclave that liner is politef 160-180 DEG C
Hydro-thermal reaction 10-15h, obtains mixed liquor after taking out cooling；
(2) by silicon carbide micro-powder, Ni60 nickel chromium triangle borosilicate alloyed powder, lanthana and the mixed liquor mixing and stirring in (1), then
Add polyvinylpyrrolidone under the conditions of 60-80 DEG C, stir 0.5-1h, after cooling, add remaining raw material ball milling in ball mill
2-4h, obtains mixed slurry；
(3) the mixed slurry spray drying tower in (2) carrying out being spray-dried to obtain modified powder, wherein inlet temperature is 260-
290 DEG C, outlet temperature is 100-120 DEG C；
(4) the modified powder in (3) is placed in mould compressing, processes 0.5-in an inert atmosphere prior to 400-500 DEG C
1h, then sinters 1-2h in 1450-1500 DEG C, then is down to 800-900 DEG C of insulation 2-4h, be finally down to room temperature and come out of the stove, obtain resistance to
High temperature shock resistance ceramic-seal ring.
The invention have the advantage that
The present invention is by water heat transfer rod-like aluminum oxide/molybdenum bisuphide composite and to silicon carbide micro-powder, Ni60 nickel chromium triangle boron
Silicon alloy powder, lanthana mixed powder carry out surface coating modification, while toughness reinforcing, improve material stable homogeneous and
Lubricity, makes material have good toughness, frictional behaviour and processing characteristics, and compounding by remaining raw material, the pottery obtained concurrently
Porcelain sealing ring has the friction of excellence, impact resistance, can keep good impact resistance under the high temperature conditions, suitably simultaneously
Using under worst hot case, good reliability, service life is long.
Detailed description of the invention
A kind of high temperature resistant shock resistance ceramic-seal ring, is prepared from by the component raw material of following weight (kg):
Silicon carbide micro-powder 80, Ni60 nickel chromium triangle borosilicate alloyed powder 5, lanthana 3, aluminum nitrate 3, ammonium molybdate 0.5, Lithium metaniobate 0.5, thiourea
6, EVA emulsions 0.5, CTAB 0.01, polyvinylpyrrolidone 1, nanometer tantalum carbide 1.
The preparation method of a kind of high temperature resistant shock resistance ceramic-seal ring, comprises the following steps:
(1) by complete, then with thiourea, hexadecane for stirring and dissolving in the water of 20 times of weight of addition after aluminum nitrate, ammonium molybdate mixing
Base trimethyl amine bromide is sufficiently mixed, and pH is adjusted to 3 and adds 160 DEG C of hydro-thermal reactions in the autoclave that liner is politef
10h, obtains mixed liquor after taking out cooling；
(2) by silicon carbide micro-powder, Ni60 nickel chromium triangle borosilicate alloyed powder, lanthana and the mixed liquor mixing and stirring in (1), then
Add polyvinylpyrrolidone under the conditions of 60 DEG C, stir 0.5h, after cooling, add remaining raw material ball milling 2h in ball mill,
Mixed slurry；
(3) the mixed slurry spray drying tower in (2) carrying out being spray-dried to obtain modified powder, wherein inlet temperature is 260
DEG C, outlet temperature is 100 DEG C；
(4) the modified powder in (3) is placed in mould compressing, processes 0.5h in an inert atmosphere prior to 400 DEG C, then
Sinter 1h in 1450 DEG C, then be down to 800 DEG C of insulation 2h, be finally down to room temperature and come out of the stove, obtain high temperature resistant shock resistance ceramic-seal ring.
Above-mentioned prepared ceramic-seal ring the performance test results is as follows:
Rupture strength 697MPa, fracture toughness 8.8MPa m1/2。
Claims (2)
1. a high temperature resistant shock resistance ceramic-seal ring, it is characterised in that it is to be prepared by the raw material of following weight parts:
Silicon carbide micro-powder 80-90, Ni60 nickel chromium triangle borosilicate alloyed powder 5-10, lanthana 3-5, aluminum nitrate 3-4, ammonium molybdate 0.5-1, niobium
Acid lithium 0.5-1, thiourea 6-8, EVA emulsion 0.5-1, CTAB 0.01-0.015, polyvinylpyrrolidone
1-1.5, nanometer tantalum carbide 1-2.
The preparation method of a kind of high temperature resistant shock resistance ceramic-seal ring the most according to claim 1, it is characterised in that include
Following steps:
(1) complete by adding stirring and dissolving in the water of 20-25 times of weight after aluminum nitrate, ammonium molybdate mixing, then with thiourea, 16
Alkyl trimethyl amine bromide is sufficiently mixed, and pH is adjusted to 3-4 and adds in the autoclave that liner is politef 160-180 DEG C
Hydro-thermal reaction 10-15h, obtains mixed liquor after taking out cooling；
(2) by silicon carbide micro-powder, Ni60 nickel chromium triangle borosilicate alloyed powder, lanthana and the mixed liquor mixing and stirring in (1), then
Add polyvinylpyrrolidone under the conditions of 60-80 DEG C, stir 0.5-1h, after cooling, add remaining raw material ball milling in ball mill
2-4h, obtains mixed slurry；
(3) the mixed slurry spray drying tower in (2) carrying out being spray-dried to obtain modified powder, wherein inlet temperature is 260-
290 DEG C, outlet temperature is 100-120 DEG C；
(4) the modified powder in (3) is placed in mould compressing, processes 0.5-in an inert atmosphere prior to 400-500 DEG C
1h, then sinters 1-2h in 1450-1500 DEG C, then is down to 800-900 DEG C of insulation 2-4h, be finally down to room temperature and come out of the stove, obtain resistance to
High temperature shock resistance ceramic-seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610656118.9A CN106270529A (en) | 2016-08-11 | 2016-08-11 | A kind of high temperature resistant shock resistance ceramic-seal ring and preparation method thereof |
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| CN201610656118.9A CN106270529A (en) | 2016-08-11 | 2016-08-11 | A kind of high temperature resistant shock resistance ceramic-seal ring and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460069A (en) * | 2020-11-09 | 2021-03-09 | 江苏优格曼航空科技有限公司 | Magnetic suspension fan volute with high-heat-dissipation-performance coating and preparation method thereof |
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|---|---|---|---|---|
| CN1730596A (en) * | 2005-08-18 | 2006-02-08 | 宁波东联密封件有限公司 | High purity aluminum oxide seal ring and its production method |
| CN101169188A (en) * | 2007-12-04 | 2008-04-30 | 上海德宝密封件有限公司 | Silicon carbide ceramic seal ring |
| CN101407410A (en) * | 2008-11-11 | 2009-04-15 | 中国铝业股份有限公司 | Method of preparing alumina ceramic prilling powder for sealed ring |
| CN102875153A (en) * | 2012-09-27 | 2013-01-16 | 宁波伏尔肯机械密封件制造有限公司 | Spray drying granulation method of silicon nitride ceramic powder used for mechanical sealing |
| CN103031476A (en) * | 2012-12-14 | 2013-04-10 | 潮州市威达陶瓷制作有限公司 | Rare-earth ceramic alloy and preparation method thereof |
| CN104124025A (en) * | 2014-06-25 | 2014-10-29 | 蚌埠市英路光电有限公司 | Silicon-based rare earth ferromagnetic core material |
| CN105330293A (en) * | 2015-09-01 | 2016-02-17 | 广西南宁智翠科技咨询有限公司 | High-hardness and high-temperature resistance titanium carbide ceramic and preparation method thereof |
| CN105838957A (en) * | 2016-05-31 | 2016-08-10 | 合肥正浩机械科技有限公司 | Anti-abrasion metal ceramic seal ring and manufacturing method thereof |
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2016
- 2016-08-11 CN CN201610656118.9A patent/CN106270529A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730596A (en) * | 2005-08-18 | 2006-02-08 | 宁波东联密封件有限公司 | High purity aluminum oxide seal ring and its production method |
| CN101169188A (en) * | 2007-12-04 | 2008-04-30 | 上海德宝密封件有限公司 | Silicon carbide ceramic seal ring |
| CN101407410A (en) * | 2008-11-11 | 2009-04-15 | 中国铝业股份有限公司 | Method of preparing alumina ceramic prilling powder for sealed ring |
| CN102875153A (en) * | 2012-09-27 | 2013-01-16 | 宁波伏尔肯机械密封件制造有限公司 | Spray drying granulation method of silicon nitride ceramic powder used for mechanical sealing |
| CN103031476A (en) * | 2012-12-14 | 2013-04-10 | 潮州市威达陶瓷制作有限公司 | Rare-earth ceramic alloy and preparation method thereof |
| CN104124025A (en) * | 2014-06-25 | 2014-10-29 | 蚌埠市英路光电有限公司 | Silicon-based rare earth ferromagnetic core material |
| CN105330293A (en) * | 2015-09-01 | 2016-02-17 | 广西南宁智翠科技咨询有限公司 | High-hardness and high-temperature resistance titanium carbide ceramic and preparation method thereof |
| CN105838957A (en) * | 2016-05-31 | 2016-08-10 | 合肥正浩机械科技有限公司 | Anti-abrasion metal ceramic seal ring and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460069A (en) * | 2020-11-09 | 2021-03-09 | 江苏优格曼航空科技有限公司 | Magnetic suspension fan volute with high-heat-dissipation-performance coating and preparation method thereof |
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