CN101127253B - Silver nickel electricity-conductive ceramic electrical contact material and its production method - Google Patents
Silver nickel electricity-conductive ceramic electrical contact material and its production method Download PDFInfo
- Publication number
- CN101127253B CN101127253B CN2007100450075A CN200710045007A CN101127253B CN 101127253 B CN101127253 B CN 101127253B CN 2007100450075 A CN2007100450075 A CN 2007100450075A CN 200710045007 A CN200710045007 A CN 200710045007A CN 101127253 B CN101127253 B CN 101127253B
- Authority
- CN
- China
- Prior art keywords
- silver
- electrical contact
- powder
- conductive ceramic
- contact material
- 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.)
- Active
Links
Abstract
The utility model provides a method for manufacturing electrical contact material, and can manufacture silver-nickel conductive ceramics electrical contact material characterized in steady contacting resistance, multiple fusion characteristic, voltaic arc burning tolerance and electric wear resistance. The electrical contact material comprises nickel, conductive ceramics (TiN2, SnO2 single or combination), rare-earth (lanthanum, cerium single or combination), silver and unavoidable impurities. The electrical contact elements are made by producing powder, mechanically mixing, high-energy ball milling, isopressing forming, sintering, extruding and contour machining orderly. The finished electrical contact elements overcomes the defects of prior art electrical contact element such as unstable contacting resistance, insufficient fusion characteristic, high voltaic arc burning loss and low electric wear resistance.
Description
Technical field:
The present invention relates to electrical alloy made technology field, mainly is the making of silver nickel electricity-conductive ceramic electrical contact material.
Background technology:
Traditional silver-colored nickel electric contact material adopts the powder metallurgical technique manufacturing, and chemical composition is: nickel: 5%～40%, and silver is surplus.Processing process is as follows:
Silver powder+nickel powder → powder mixing machine → compression moulding → sintering → extruding → processing and forming
The silver-colored nickel electric contact material of produced in conventional processes, in metallographic structure the nickel distribution of particles inhomogeneous, coazevation is arranged, organize thickly, cause the contact resistance of material big, resistance fusion welding, anti-electrical arc erosion and anti-electric abrasioning performance are low, the useful life of contact is relatively low.Continuous development along with the device for switching production technology, and the requirement of device for switching miniaturization development trend, the silver-colored nickel electric contact material of produced in conventional processes can not satisfy the requirement of device for switching, must research and develop more high performance electrical contact material, to satisfy the needs of device for switching production development.
Summary of the invention:
The present invention mainly is in the silver-colored nickel electric contact material at produced in conventional processes, metallographic structure is inhomogeneous, the nickel metallographic structure is thick, the contact resistance height, resistance fusion welding, anti-electrical arc erosion and anti-electric abrasioning performance are low, and the shortcoming that useful life is not high is by adding conductivity ceramics and rare earth element in silver-nickel, improve production technology simultaneously, improve silver-colored nickel electric contact material combination property.
The present invention is achieved in that a kind of silver nickel electricity-conductive ceramic electrical contact material, it is characterized in that: by weight percentage, the composition of silver nickel electricity-conductive ceramic electrical contact material is composed of the following components:
Nickel: 5%～40%,
Conductivity ceramics: 0.2%～2%,
Rare earth: 0.1%～1%,
Surplus is silver and unavoidable impurity.
The technical process of extraordinary silver nickel electricity-conductive ceramic electrical contact is followed successively by: powder process, powder mixing machine, high-energy ball milling, hydrostatic pressing, sintering, extruding, processing and forming.
Described powder process: at first make silver powder, adopt intermediate frequency furnace the fusing of 1# silver ingot, add rare earth more according to the above ratio, be smelted into silver rare-earth alloy, on the centrifugal high pressure atomization plant silver rare-earth alloy liquation is atomized into powder then, the particle mean size of powder is 1 μ m～20 μ m.Secondly adding electrolytic nickel powder and the particle mean size that particle mean size is 1 μ m～20 μ m according to the above ratio is the conductivity ceramics powder of 1 μ m～20 μ m.
Described powder mixing machine adopts mixed powder machine that powder is mixed powder, mixes 1～4 hour powder time.
Described high-energy ball milling adopts high energy ball mill that the silver nickel electricity-conductive ceramic mixed powder is carried out ball milling, uses alcohol as disperseing and protective agent drum's speed of rotation 200～250r/min, 2 hours ball milling time by 1% heavy processing industry of material.Behind the ball milling silver nickel electricity-conductive ceramic mixed powder is taken out, put into about 2 hours of 200 ℃ of van-type stove oven dry.
Described hydrostatic pressing adopts isostatic pressing machine that the silver nickel electricity-conductive ceramic mixed powder is carried out press forming, and pressing pressure is 1000MPa～2000MPa.
Described sintering adopts and carries out sintering with gas protection sintering furnace, protective gas H
2, the speed of heating is 100 ℃/h, and insulation is 3 hours when being warming up to 850 ℃, and cool off with stove the back.
Described extruding adopts the 930T extruder to push, the spindle intermediate frequency furnace preheating of hydrogen shield, and temperature is 850 ℃.During extruding Φ 6mm wire rod, about 200: 1 of extrusion ratio, during extruding 50mm * 6mm sheet material, about 20: 1 of extrusion ratio.
Described processing and forming can be pulled out the wire rod of required diameter with wire drawing machine to wire rod, is machined as the rivet element with the cold-heading composite rivet again.To sheet material, can be processed as required sheet material element to sheet material through rolling and stamping procedure.
Embodiment:
The composition components in percentage by weight of a kind of silver nickel electricity-conductive ceramic electrical contact material of the present invention is:
Embodiment 1
Nickel 5%,
TiN
2, SnO
2The combination 0.2% of conductivity ceramics a kind of or two kinds,
The combination 0.1% of Rare Earth Lanthanum, cerium a kind of or two kinds,
Surplus is silver and unavoidable impurity.
Embodiment 2
Nickel 40%,
TiN
2, SnO
2The combination 2% of conductivity ceramics a kind of or two kinds,
The combination 1% of Rare Earth Lanthanum, cerium a kind of or two kinds,
Surplus is silver and unavoidable impurity.
Embodiment 3
Nickel 22.5%,
TiN
2, SnO
2The combination 1.1% of conductivity ceramics a kind of or two kinds,
The combination 0.5% of Rare Earth Lanthanum, cerium a kind of or two kinds,
Surplus is silver and unavoidable impurity.
The manufacturing process flow of silver nickel electricity-conductive ceramic electrical contact material of the present invention is as follows:
1) powder process:
---silver powder: with intermediate frequency furnace silver ingot is melted, add rare earth more in proportion, be smelted into silver rare-earth alloy, on the centrifugal high pressure atomization plant silver rare-earth alloy liquation is atomized into powder then, the particle mean size of powder is 1 μ m～20 μ m.
---nickel powder: commercial electrolytic nickel powder, particle mean size are 1 μ m～20 μ m.
---the conductivity ceramics powder: commercial, particle mean size is 1 μ m～20 μ m.
To scale silver-colored rare earth powder, nickel powder and conductivity ceramics powder are mixed into the silver nickel electricity-conductive ceramic powder.
2) powder mixing machine:
Mix the powder machine with V-type the silver nickel electricity-conductive ceramic mixed powder is mixed powder, mix 2 hours powder time.
3) high-energy ball milling
With high energy ball mill silver-nickel-conductivity ceramics mixed powder is carried out ball milling, use alcohol as dispersion and protective agent by 1% heavy processing industry of material, drum's speed of rotation is 200～250r/min, 2 hours ball milling time.Behind the ball milling silver nickel electricity-conductive ceramic mixed powder is taken out, put into about 2 hours of 200 ℃ of van-type stove oven dry.
4) hydrostatic pressing
With isostatic pressing machine the silver nickel electricity-conductive ceramic mixed powder is carried out press forming, pressing pressure is 1300MPa.
5) sintering
Carry out sintering with gas protection sintering furnace, protective gas H
2Or decomposed ammonia, the speed of heating is 100 ℃/h, and insulation is 3 hours when being warming up to 850 ℃, and cool off with stove the back.
6) extruding
Push with the 930T extruder, the spindle intermediate frequency furnace preheating of hydrogen shield, temperature is 850 ℃.During extruding Φ 6mm wire rod, about 200: 1 of extrusion ratio, during extruding 50mm * 6mm sheet material, about 20: 1 of extrusion ratio.
7) processing and forming
Can pull out the wire rod of required diameter with wire drawing machine to wire rod, be machined as the rivet element with the cold-heading composite rivet again.
To sheet material, can be processed as required sheet material element to sheet material through rolling and stamping procedure.
Manufacture method of the present invention owing to add rare earth element when melting, forms behind the silver rare-earth alloy again that high-pressure water mist turns to the silver rare-earth alloy powder, and the rare earth element of interpolation can effectively be distributed in the silver matrix.
The present invention is owing to adopt high-energy ball milling, remarkable refinement powder, and silver powder and nickel powder can generate bright and new interface, interface junction gets togather, in addition, the interpolation of rare earth element can improve the structure and the dispersiveness of particle, solves the drawback of nickel particle agglomeration simultaneously, the nickel particles disperse is distributed in the silver matrix, improve the institutional framework of material greatly, the metallographic structure of material is evenly distributed, the metallographic structure refinement of nickel, the contact resistance of reduction and stabilizing material improves resistance fusion welding and anti-electrical arc erosion ability.
In the manufacture method of the present invention, also added have high strength, high rigidity, high-melting-point and anti abrasive conductivity ceramics, can improve the resistance fusion welding of silver-colored Ni substrate, anti-electrical arc erosion and anti-electrical wear ability greatly.
The advantage of silver nickel electricity-conductive ceramic electrical contact material of the present invention is: the contact resistance of reduction and stabilizing material, comprehensively improve the resistance fusion welding of material, anti-electrical arc erosion and anti-electric abrasioning performance, and can prolong the useful life of electrical contact greatly.
The present invention can be widely used in AC and DC contactor, relay, controller, circuit breaker and the switch etc. of medium and small electric current.
Claims (8)
1. the manufacturing process of a silver nickel electricity-conductive ceramic electrical contact material, its flow process is as follows: powder process, powder mixing machine, high-energy ball milling, hydrostatic pressing, sintering, extruding, processing and forming become element; By weight percentage, described silver nickel electricity-conductive ceramic electrical contact material is composed of the following components:
Nickel: 5%～40%,
Conductivity ceramics: 0.2%～2%,
Rare earth: 0.1%～1%,
Surplus is silver and unavoidable impurity,
Described conductivity ceramics is TiN
2, SnO
2A kind of or two kinds combination,
Described rare earth is the combination of a kind of of lanthanum, cerium or two kinds;
It is characterized in that: described high-energy ball milling carries out ball milling for adopting high energy ball mill to the silver nickel electricity-conductive ceramic mixed powder; use alcohol as disperseing and protective agent by 1% heavy processing industry of material; drum's speed of rotation 200～250r/min; 2 hours ball milling time; behind the ball milling silver nickel electricity-conductive ceramic mixed powder is taken out; put into 200 ℃ of van-type stoves and dry, the time is approximately 2 hours.
2. the manufacturing process of a kind of silver nickel electricity-conductive ceramic electrical contact material according to claim 1, it is characterized in that: described powder process, at first make silver powder, the 1# silver ingot is melted with intermediate frequency furnace, ratio in total weight 0.1%～1% is added rare earth, be smelted into silver rare-earth alloy, on the centrifugal high pressure atomization plant silver rare-earth alloy liquation be atomized into powder then, the particle mean size of powder is 1 μ m～20 μ m; Secondly adding particle mean size in total weight 5%～40% ratio is the electrolytic nickel powder of 1 μ m～20 μ m, and adding particle mean size in the ratio of total weight 0.2%～2% is the conductivity ceramics powder of 1 μ m～20 μ m.
3. the manufacturing process of a kind of silver nickel electricity-conductive ceramic electrical contact material according to claim 1 is characterized in that: described powder mixing machine is with mixed powder machine the silver nickel electricity-conductive ceramic mixed powder to be mixed powder, and it is 1～4 hour that the silver nickel electricity-conductive ceramic mixed powder mixes the powder time.
4. the manufacturing process of a kind of silver nickel electricity-conductive ceramic electrical contact material according to claim 1 is characterized in that: described hydrostatic pressing is with isostatic pressing machine the silver nickel electricity-conductive ceramic mixed powder to be carried out press forming, and pressing pressure is 1000MPa～2000MPa.
5. the manufacturing process of a kind of silver nickel electricity-conductive ceramic electrical contact material according to claim 1 is characterized in that: described sintering adopts gas protection sintering furnace to carry out protective gas H
2, the speed of heating is 80～150 ℃/h, and insulation is 3 hours when being warming up to 800 ℃～1000 ℃, and cool off with stove the back.
6. the manufacturing process of a kind of silver nickel electricity-conductive ceramic electrical contact material according to claim 1 is characterized in that: described extruding adopts the 930T extruder to carry out, the spindle intermediate frequency furnace preheating of hydrogen shield, and temperature is 850 ℃.
7. the manufacturing process of a kind of silver nickel electricity-conductive ceramic electrical contact material according to claim 1 is characterized in that: described processing and forming be to wire rod with wire drawing machine pull out required diameter the silk material, be machined as the rivet element with the cold-heading composite rivet again.
8. the manufacturing process of a kind of silver nickel electricity-conductive ceramic electrical contact material according to claim 1 is characterized in that: described processing and forming be to sheet material through rolling and stamping procedure, sheet material is processed as required sheet material element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100450075A CN101127253B (en) | 2007-08-17 | 2007-08-17 | Silver nickel electricity-conductive ceramic electrical contact material and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100450075A CN101127253B (en) | 2007-08-17 | 2007-08-17 | Silver nickel electricity-conductive ceramic electrical contact material and its production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101127253A CN101127253A (en) | 2008-02-20 |
| CN101127253B true CN101127253B (en) | 2010-12-29 |
Family
ID=39095246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100450075A Active CN101127253B (en) | 2007-08-17 | 2007-08-17 | Silver nickel electricity-conductive ceramic electrical contact material and its production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101127253B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290261B (en) * | 2011-05-27 | 2014-04-09 | 张树堂 | Silver copper based metal oxide electrical contact material containing adding elements and preparation method thereof |
| CN102290116A (en) * | 2011-08-15 | 2011-12-21 | 上海中希合金有限公司 | Ag-Cu-Ni ceramic composite for micromotor commutator and manufacturing technology thereof |
| CN103555980A (en) * | 2013-11-01 | 2014-02-05 | 四川飞龙电子材料有限公司 | Preparation method as well as product of rare earth-containing silver-nickel alloy material |
| CN103794391B (en) * | 2013-12-18 | 2016-03-23 | 福达合金材料股份有限公司 | A kind for the treatment of process strengthening Ag matrix phase in AgNi composite material and Ni wild phase wetability |
| CN104882314B (en) * | 2014-02-28 | 2017-05-17 | 西门子公司 | Method for preparing Ag-Ni yl contact materials |
| CN106181229B (en) * | 2016-06-30 | 2019-01-08 | 佛山市诺普材料科技有限公司 | A kind of silver nickel electric contact material fabrication process |
| CN109355523B (en) * | 2018-10-23 | 2020-06-26 | 浙江大学 | Ag/Zn2SnO4Conductive alloy and preparation method thereof |
| CN111957980A (en) * | 2020-07-06 | 2020-11-20 | 西安工程大学 | Method for preparing silver-nickel-doped tin oxide electrical contact material based on ball milling method |
| CN112048632A (en) * | 2020-07-24 | 2020-12-08 | 浙江耐迩合金科技有限公司 | Preparation method of silver-nickel electrical contact material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107774A (en) * | 1986-11-12 | 1988-06-01 | 济南电工合金厂 | Contact material comprising silver based metallic oxides with mixed rare earth metals |
| CN1104260A (en) * | 1994-09-06 | 1995-06-28 | 中国有色金属工业总公司昆明贵金属研究所 | Silver-tase alloy electric probe material |
| CN1386872A (en) * | 2002-04-22 | 2002-12-25 | 山东大学 | Multi-element compounded Ag-base electric contact material |
-
2007
- 2007-08-17 CN CN2007100450075A patent/CN101127253B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107774A (en) * | 1986-11-12 | 1988-06-01 | 济南电工合金厂 | Contact material comprising silver based metallic oxides with mixed rare earth metals |
| CN1104260A (en) * | 1994-09-06 | 1995-06-28 | 中国有色金属工业总公司昆明贵金属研究所 | Silver-tase alloy electric probe material |
| CN1386872A (en) * | 2002-04-22 | 2002-12-25 | 山东大学 | Multi-element compounded Ag-base electric contact material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101127253A (en) | 2008-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101127253B (en) | Silver nickel electricity-conductive ceramic electrical contact material and its production method | |
| CN107794389B (en) | Silver tin oxide indium oxide electric contact material and preparation method thereof | |
| CN101649401B (en) | Ag-Ni-oxide electrical contact material and preparation method thereof | |
| CN102268583B (en) | Method for preparing silver tin oxide electrical contact material | |
| CN102290261B (en) | Silver copper based metal oxide electrical contact material containing adding elements and preparation method thereof | |
| CN101798641B (en) | Spray atomization technology of silver tin oxide material | |
| CN103643074B (en) | A kind of preparation method of flaky AgSnO2 contact | |
| CN103489665A (en) | Contact material used for high-breaking low-voltage electric appliance, method for manufacturing contact material, composite contact material used for high-breaking low-voltage electric appliance and method for manufacturing composite contact material | |
| CN102747248A (en) | Sliver-oxide ternary alloy electrical contact material and production method thereof | |
| CN102864364A (en) | Composite silver stannic oxide electric contact material and preparation method thereof | |
| CN101651054A (en) | Preparation method of modified AgSnO2 electric contact material | |
| CN112620640B (en) | Preparation method of AgNi electrical contact material based on recycling of AgC scrap | |
| CN1477219A (en) | Preparation method of siluer metal oxide electric contact material | |
| CN101964260B (en) | Ag/SnO2 electrical contact material and preparation method thereof | |
| CN105838914A (en) | Preparation method of silver-based contact material containing graphene | |
| CN103192203B (en) | Process method for preparing silver solder | |
| CN102044347B (en) | Preparation method and products of silver-copper-nickel-ceramic alloy contact material with high welding resistance | |
| CN109500391A (en) | A kind of preparation method of high ductility silver zinc oxide contact material | |
| CN106067391A (en) | Stratiform silver-bearing copper pricker three-layer composite electric contact material prepared by a kind of atomization | |
| CN100562956C (en) | The manufacture method of high temperature resistant silver oxide contact tip material | |
| CN105551860A (en) | Preparation method of nickel-plated graphene/silver-nickel electrical contact material | |
| CN102864365A (en) | Composite silver stannic oxide electric contact material and preparation method thereof | |
| CN101439871B (en) | Composite nano SnO2 powdered material and preparation thereof | |
| CN100545970C (en) | A kind of special powder copper alloy electric contact material and manufacture method thereof | |
| CN109593981A (en) | A kind of preparation method for the sliver oxidized tin contactor materials improving ingot blank agglutinating property |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201603 Shen brick road, Sheshan Town, Songjiang District, Shanghai 3168 Patentee after: New Mstar Technology Ltd of Guixi (Shanghai) Address before: 201603 Shen brick road, Sheshan Town, Songjiang District, Shanghai 3168 Patentee before: Shanghai Longsun Alloy Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |