CN104051054A - Silver-based and titanium-carbide-based contact material and preparation method thereof - Google Patents
Silver-based and titanium-carbide-based contact material and preparation method thereof Download PDFInfo
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- CN104051054A CN104051054A CN201410278399.XA CN201410278399A CN104051054A CN 104051054 A CN104051054 A CN 104051054A CN 201410278399 A CN201410278399 A CN 201410278399A CN 104051054 A CN104051054 A CN 104051054A
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Abstract
The invention provides a silver-based and titanium-carbide-based contact material and a preparation method thereof. The silver-based and titanium-carbide-based contact material comprises, by weight, 3%-40% of titanium carbide and the balance silver, or comprises, by weight, 3%-40% of titanium carbide, 0.01%-5% of carbon and the balance silver, or comprises, by weight, 3%-40% of titanium carbide, 0.01%-4% of a mixture of one or several kinds of iron, cobalt and nickel and the balance silver, or comprises, by weight, 3%-40% of titanium carbide, 0.01%-5% of carbon, 0.01%-4% of a mixture of one or several kinds of iron, cobalt and nickel and the balance silver. A power metallurgic method and an infiltration method are adopted in the preparation method. The silver-based and titanium-carbide-based contact material has the advantages that welding resistance is good, arc erosion resistance is achieved, under the condition of long-time use, contact resistance between contacts is low, and contact temperature rising is low and stable.
Description
Technical field
The present invention relates to a kind of silver, titanium carbide base contact material and preparation method thereof.
Background technology
Contact is the core component of low-voltage electrical apparatus, plays the task of connection, carrying and breaking current, its good and bad safety and reliability that directly affects low-voltage electrical apparatus.At present low-voltage circuit breaker silver-colored tungsten, silver-colored tungsten carbide, the silver-colored tungsten carbide graphite of using is as contact material more, because its resistance fusion welding can be good, and characteristics such as arc ablation resistance and being widely used.But this take tungsten and tungsten carbide be the main contact material that adds phase in long-term use procedure, tungsten and tungsten carbide all can be oxidized, and reacts with silver in contact surface and form nonconducting wolframic acid silver, make the rising of contact Contact resistance, cause electric apparatus temperature rise too high.
Summary of the invention
The object of the present invention is to provide a kind of resistance fusion welding that has that is applied to low-voltage electrical apparatus can be good, the characteristic of arc ablation resistance, again can be under long-term service condition, the silver that contact Contact resistance is low, contact temperature rise is low and stable, titanium carbide base contact material and preparation method thereof.
The present invention adopts following technology: a kind of silver, titanium carbide base contact material, it is filled a prescription, and percentage proportioning is as follows by weight: titanium carbide 3%-40, surplus is silver.
The present invention also has following technical characterictic:
1, another silver, titanium carbide base contact material, it is filled a prescription, and percentage proportioning is as follows by weight: titanium carbide 3%-40, carbon 0.01%-5%, surplus is silver.
2, another silver, titanium carbide base contact material, it is filled a prescription, and percentage proportioning is as follows by weight: titanium carbide 3%-40, one or more the mixture 0.01%-4% in iron, cobalt, nickel, surplus is silver.
3, another silver, titanium carbide base contact material, it is filled a prescription, and percentage proportioning is as follows by weight: titanium carbide 3%-40, carbon 0.01%-5%, one or more the mixture 0.01%-4% in iron, cobalt, nickel, surplus is silver.
4, carbon as above is one or more mixtures in graphite, diamond, Graphene, fullerene, CNT (carbon nano-tube), amorphous carbon.
5, a preparation method for silver, titanium carbide base contact material, adopts powder metallurgic method, comprises the following steps:
A, mixed powder: after one or more mixtures in the iron that-200 order silver powder, particle mean size are the carbonized titanium powder of 0.5-4 micron, carbon dust that particle mean size is 1-3 micron, particle mean size is 0.5-3 micron, cobalt, nickel being weighed by formula, put into V-type and force mixed powder machine to mix powder 1-4 hour;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 200-350MPa;
C, sintering: blank is sintering 1-4 hour under vacuum or argon shield, sintering temperature 800-950 degree;
D, multiple pressure: by multiple pressure the on crank press of the blank after sintering, pressure is 350-800MPa
E, resintering: the blank resintering 1-4 hour under vacuum or argon shield after multiple pressure, resintering temperature 800-950 degree;
F, polishing: the blank after resintering is put into centrifugal finishing machine, and add the alumina abrasive polishing 10-20 minute of equivalent weight.
6, the preparation method of another silver, titanium carbide base contact material, adopts infiltration method, comprises the following steps:
A, mixed powder: the silver powder that is 0.5-2 micron by particle mean size by the 10%-40% of formulation weight weighs; By formula, by particle mean size, be, after one or more mixtures in the carbonized titanium powder of 0.5-4 micron, iron that particle mean size is 0.5-3 micron, cobalt, nickel weigh, above powder all to be put into V-type and force mixed powder machine to mix powder 1-4 hour;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 150-350MPa;
C, infiltration: on blank, place thin silver film, supply remaining silver content, send in infiltration stove, under argon shield by thin silver film infiltration in blank, infiltrating temperature is 1000-1100 degree, the infiltration time is 0.1-1 hour;
D, polishing: blank after infiltration is put into centrifugal polishing machine, and add the alumina abrasive of equivalent weight, polishing 10-20 minute.
Titanium carbide has high fusing point and good oxidation resistance, even under the repeated action of electric arc, is also difficult for occurring oxidative deformation; No matter be that titanium carbide or titanium oxide all can not react with silver simultaneously, just can not generate the non-conductive layer of similar wolframic acid silver and so on yet, can not form resistive formation; Appropriate carbon add the resistance fusion welding that can regulate contact material, guarantee that melting welding does not occur in contact use procedure; Appropriate iron, cobalt, nickel add the wetability that can increase between titanium carbide and silver, so can improve the processability of material, can reduce again contact Contact resistance, improved the reliability of electrical equipment.Of the present invention there is resistance fusion welding can be good, the characteristic of arc ablation resistance, again can be under long-term service condition, the advantage that contact Contact resistance is low, contact temperature rise is low and stable.
Embodiment
The invention will be further described for example below:
embodiment 1
Make titanium carbide by weight percentage and be 3%, the contact of silver-colored surplus:
A, mixed powder: weigh 19.4 kilograms ,-200 order silver powder, particle mean size and be 0. 6 kilograms of the carbonized titanium powders of 3 microns, put into V-type and force mixed powder machine to mix powder 3 hours;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 350MPa;
C, sintering: blank sintering 3 hours under vacuum, sintering temperature 850 degree;
D, multiple pressure: by multiple pressure the on crank press of the blank after sintering, pressure is 500MPa;
E, resintering: the resintering 2 hours under argon shield of the blank after multiple pressure, resintering temperature 900 degree;
F, polishing: the blank after resintering is put into centrifugal finishing machine, and add the alumina abrasive of 20 kilograms, polishing 15 minutes.
embodiment 2
Make titanium carbide by weight percentage and be 40%, the contact of silver-colored surplus:
A, mixed powder: weigh particle mean size and be 8 kilograms of 12 kilograms, the silver powder of 0.8 micron, carbonized titanium powders that particle mean size is 1.5 microns, put into V-type and force mixed powder machine to mix powder 2 hours;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 150MPa;
C, infiltration: on blank, place thin silver film, the weight of silver strip is that billet weight is identical, send in infiltration stove, under argon shield by thin silver film infiltration in blank, infiltrating temperature is 1050 degree, the infiltration time is 1 hour;
D, polishing: blank after infiltration is put into centrifugal polishing machine, and add the alumina abrasive of 20 kilograms, polishing 15 minutes.
embodiment 3
Make titanium carbide by weight percentage and be 3%, the contact of diamond 0.01%, silver-colored surplus:
A, mixed powder: weigh 19.398 kilograms ,-200 order silver powder, particle mean size and be 0.002 kilogram of 0. 6 kilograms of the carbonized titanium powder of 1 micron, bortz powder that particle mean size is 1 micron and put into V-type and force mixed powder machine to mix powder 3 hours;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 300MPa;
C, sintering: blank sintering 3 hours under vacuum, sintering temperature 880 degree;
D, multiple pressure: by multiple pressure the on crank press of the blank after sintering, pressure is 500MPa;
E, resintering: the resintering 2 hours under argon shield of the blank after multiple pressure, resintering temperature 900 degree;
F, polishing: the blank after resintering is put into centrifugal finishing machine, and add the alumina abrasive of 20 kilograms, polishing 15 minutes.
embodiment 4
Make titanium carbide by weight percentage and be 40%, graphite is 5%, the contact of silver-colored surplus:
A, mixed powder: weigh 11 kilograms ,-200 order silver powder, particle mean size and be 1 kilogram of 8 kilograms of the carbonized titanium powder of 1 micron, graphite powder that particle mean size is 1 micron and put into V-type and force mixed powder machine to mix powder 4 hours;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 350MPa;
C, sintering: blank sintering 3 hours under vacuum, sintering temperature 900 degree;
D, multiple pressure: by multiple pressure the on crank press of the blank after sintering, pressure is 500MPa;
E, resintering: the resintering 2 hours under argon shield of the blank after multiple pressure, resintering temperature 950 degree;
F, polishing: the blank after resintering is put into centrifugal finishing machine, and add the alumina abrasive of 20 kilograms, polishing 15 minutes.
embodiment 5
Make titanium carbide by weight percentage and be 10%, graphite is 3%, the contact of silver-colored surplus:
A, mixed powder: weigh 17.4 kilograms ,-200 order silver powder, particle mean size and be 0.6 kilogram of 2 kilograms of the carbonized titanium powders of 3 microns, graphite powder that particle mean size is 1.5 microns, put into V-type and force mixed powder machine to mix powder 3 hours;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 350MPa;
C, sintering: blank sintering 3 hours under vacuum, sintering temperature 850 degree;
D, multiple pressure: by multiple pressure the on crank press of the blank after sintering, pressure is 500MPa;
E, resintering: the resintering 2 hours under argon shield of the blank after multiple pressure, resintering temperature 900 degree;
F, polishing: the blank after resintering is put into centrifugal finishing machine, and add the alumina abrasive of 20 kilograms, polishing 15 minutes.
This contact is applied on DZ20Y-100 type circuit breaker, than commercially available other types silver-based contact temperature rise, reduces 5k-10K left and right.
embodiment 6
Make titanium carbide by weight percentage and be 20%, cobalt is 1%, the contact of silver-colored surplus:
A, mixed powder: weigh particle mean size and be 0.2 kilogram of 15.8 kilograms, the silver powder of 1.2 microns, 4 kilograms of carbonized titanium powders that particle mean size is 3 microns, cobalt powder that particle mean size is 2 microns, put into V-type and force mixed powder machine to mix powder 2 hours;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 150MPa;
C, infiltration: on blank, place thin silver film, the weight of silver strip is 1.5 times of billet weight, send in infiltration stove, under argon shield by thin silver film infiltration in blank, infiltrating temperature is 1050 degree, the infiltration time is 0.5 hour;
D, polishing: blank after infiltration is put into centrifugal polishing machine, and add the alumina abrasive of 20 kilograms, polishing 15 minutes.
This contact is applied on CM1-225 type circuit breaker, and breaking capacity improves 20% left and right than commercially available other types silver-based contact.
embodiment 7
Make titanium carbide by weight percentage and be 15%, cobalt is 0.5%, the contact of silver-colored surplus:
A, mixed powder: weigh 16.9 kilograms ,-200 order silver powder, particle mean size and be 0.1 kilogram of 3 kilograms of the carbonized titanium powder of 3 microns, cobalt powder that particle mean size is 2 microns and put into V-type and force mixed powder machine to mix powder 3 hours;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 300MPa;
C, sintering: blank sintering 3 hours under argon shield, sintering temperature 950 degree;
D, multiple pressure: by multiple pressure the on crank press of the blank after sintering, pressure is 500MPa;
E, resintering: the resintering 2 hours under argon shield of the blank after multiple pressure, resintering temperature 900 degree;
F, polishing: the blank after resintering is put into centrifugal finishing machine, and add the alumina abrasive of 20 kilograms, polishing 15 minutes.
This contact is applied on CM1-63 type circuit breaker, and electric life improves 10% left and right than commercially available other types silver-based contact.
embodiment 8
Make titanium carbide by weight percentage and be 30%, cobalt is 0.5%, nickel is 0.5%, the contact of silver-colored surplus:
A, mixed powder: weigh particle mean size and be 13.8 kilograms, the silver powder of 1.2 microns, 6 kilograms of carbonized titanium powders that particle mean size is 3 microns, 0.1 kilogram of cobalt powder that particle mean size is 2 microns, all granularity is 0.1 kilogram of the nickel powder of 2 microns, put into V-type and force mixed powder machine to mix powder 2 hours;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 150MPa;
C, infiltration: on blank, place thin silver film, the weight of silver strip is identical with billet weight, send in infiltration stove, under argon shield by thin silver film infiltration in blank, infiltrating temperature is 1050 degree, the infiltration time is 1 hour;
D, polishing: blank after infiltration is put into centrifugal polishing machine, and add the alumina abrasive of 20 kilograms, polishing 15 minutes.
This contact is applied on frame circuit breaker, and after breaking capacity improves 20% left and right, examination than commercially available other types silver-based contact, temperature rise reduces 10K-15K.
Claims (7)
1. silver, a titanium carbide base contact material, is characterized in that, it is filled a prescription, and percentage proportioning is as follows by weight: titanium carbide 3%-40, surplus is silver.
2. silver, a titanium carbide base contact material, is characterized in that, it is filled a prescription, and percentage proportioning is as follows by weight: titanium carbide 3%-40, and carbon 0.01%-5%, surplus is silver.
3. silver, a titanium carbide base contact material, is characterized in that, it is filled a prescription, and percentage proportioning is as follows by weight: titanium carbide 3%-40, and one or more the mixture 0.01%-4% in iron, cobalt, nickel, surplus is silver.
4. silver, a titanium carbide base contact material, is characterized in that, it is filled a prescription, and percentage proportioning is as follows by weight: titanium carbide 3%-40, and carbon 0.01%-5%, one or more the mixture 0.01%-4% in iron, cobalt, nickel, surplus is silver.
5. according to a kind of silver described in claim 2 or 4, titanium carbide base contact material, it is characterized in that: described carbon is one or more mixtures in graphite, diamond, Graphene, fullerene, CNT (carbon nano-tube), amorphous carbon.
6. the preparation method of a kind of silver claimed in claim 5, titanium carbide base contact material, is characterized in that: adopt powder metallurgic method, comprise the following steps:
A, mixed powder: after one or more mixtures in the iron that-200 order silver powder, particle mean size are the carbonized titanium powder of 0.5-4 micron, carbon dust that particle mean size is 1-3 micron, particle mean size is 0.5-3 micron, cobalt, nickel being weighed by formula, put into V-type and force mixed powder machine to mix powder 1-4 hour;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 200-350MPa;
C, sintering: blank is sintering 1-4 hour under vacuum or argon shield, sintering temperature 800-950 degree;
D, multiple pressure: by multiple pressure the on crank press of the blank after sintering, pressure is 350-800MPa
E, resintering: the blank resintering 1-4 hour under vacuum or argon shield after multiple pressure, resintering temperature 800-950 degree;
F, polishing: the blank after resintering is put into centrifugal finishing machine, and add the alumina abrasive polishing 10-20 minute of equivalent weight.
7. the preparation method of a kind of silver claimed in claim 5, titanium carbide base contact material, is characterized in that: adopt infiltration method, comprise the following steps:
A, mixed powder: the silver powder that is 0.5-2 micron by particle mean size by the 10%-40% of formulation weight weighs; By formula, by particle mean size, be, after one or more mixtures in the carbonized titanium powder of 0.5-4 micron, iron that particle mean size is 0.5-3 micron, cobalt, nickel weigh, above powder all to be put into V-type and force mixed powder machine to mix powder 1-4 hour;
B, compacting: the powder mixing is pressed into regulation shape blank on powder press, and pressure is 150-350MPa;
C, infiltration: on blank, place thin silver film, supply remaining silver content, send in infiltration stove, under argon shield by thin silver film infiltration in blank, infiltrating temperature is 1000-1100 degree, the infiltration time is 0.1-1 hour;
D, polishing: blank after infiltration is put into centrifugal polishing machine, and add the alumina abrasive of equivalent weight, polishing 10-20 minute.
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| CN201410278399.XA CN104051054A (en) | 2014-06-20 | 2014-06-20 | Silver-based and titanium-carbide-based contact material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404461A (en) * | 2014-11-13 | 2015-03-11 | 上海工具厂有限公司 | Electrical contact Ag-TiC nano composite coating based on magnetron sputtering codeposition technology |
| CN107523712A (en) * | 2017-07-27 | 2017-12-29 | 深圳市远思达成科技有限公司 | A kind of preparation technology of Research of Silver Copper Oxide Composite |
| CN108103383A (en) * | 2017-12-28 | 2018-06-01 | 洛阳神佳窑业有限公司 | A kind of Pd-Ag substrate alloy material |
| CN110976887A (en) * | 2019-12-17 | 2020-04-10 | 哈尔滨东大高新材料股份有限公司 | AgWC (T)/CuC (X) contact material and preparation method thereof |
| CN111411279A (en) * | 2020-03-03 | 2020-07-14 | 福达合金材料股份有限公司 | Silver tungsten carbide diamond composite contact material and preparation method thereof |
| CN116904787A (en) * | 2023-07-14 | 2023-10-20 | 苏州市希尔孚新材料股份有限公司 | Preparation method of silver-saving high-performance silver tungsten carbide nickel contact |
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| CN101515513A (en) * | 2009-03-30 | 2009-08-26 | 西安理工大学 | Method for preparing TiC/CuW alloy contact material |
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| CN101979694A (en) * | 2010-11-25 | 2011-02-23 | 福达合金材料股份有限公司 | Voltage-withstanding silver tungsten carbide graphite contact material and preparation method thereof |
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| JPS5920436A (en) * | 1982-07-22 | 1984-02-02 | Mitsubishi Electric Corp | Electrical contact material |
| CN101834070A (en) * | 2009-03-13 | 2010-09-15 | 上海电科电工材料有限公司 | AgWC (wolfram carbide) electrical contact material and manufacturing method thereof |
| CN101515513A (en) * | 2009-03-30 | 2009-08-26 | 西安理工大学 | Method for preparing TiC/CuW alloy contact material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404461A (en) * | 2014-11-13 | 2015-03-11 | 上海工具厂有限公司 | Electrical contact Ag-TiC nano composite coating based on magnetron sputtering codeposition technology |
| CN107523712A (en) * | 2017-07-27 | 2017-12-29 | 深圳市远思达成科技有限公司 | A kind of preparation technology of Research of Silver Copper Oxide Composite |
| CN107523712B (en) * | 2017-07-27 | 2021-10-15 | 深圳市翠绿贵金属材料科技有限公司 | Preparation process of silver copper oxide composite material |
| CN108103383A (en) * | 2017-12-28 | 2018-06-01 | 洛阳神佳窑业有限公司 | A kind of Pd-Ag substrate alloy material |
| CN110976887A (en) * | 2019-12-17 | 2020-04-10 | 哈尔滨东大高新材料股份有限公司 | AgWC (T)/CuC (X) contact material and preparation method thereof |
| CN110976887B (en) * | 2019-12-17 | 2022-02-11 | 哈尔滨东大高新材料股份有限公司 | AgWC (T)/CuC (X) contact material and preparation method thereof |
| CN111411279A (en) * | 2020-03-03 | 2020-07-14 | 福达合金材料股份有限公司 | Silver tungsten carbide diamond composite contact material and preparation method thereof |
| CN116904787A (en) * | 2023-07-14 | 2023-10-20 | 苏州市希尔孚新材料股份有限公司 | Preparation method of silver-saving high-performance silver tungsten carbide nickel contact |
| CN116904787B (en) * | 2023-07-14 | 2024-03-19 | 苏州市希尔孚新材料股份有限公司 | Preparation method of silver-saving high-performance silver tungsten carbide nickel contact |
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Application publication date: 20140917 |