CN108010772A - A kind of method that microwave heating prepares tin-oxygen-silver electric contact material - Google Patents
A kind of method that microwave heating prepares tin-oxygen-silver electric contact material Download PDFInfo
- Publication number
- CN108010772A CN108010772A CN201711289931.8A CN201711289931A CN108010772A CN 108010772 A CN108010772 A CN 108010772A CN 201711289931 A CN201711289931 A CN 201711289931A CN 108010772 A CN108010772 A CN 108010772A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- microwave heating
- electric contact
- silver
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/048—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes
Abstract
The present invention discloses a kind of method that microwave heating prepares tin-oxygen-silver electric contact material.Step includes water atomization, microwave heating, drying and oxidation, high temperature insostatic pressing (HIP), sintering, hot-working, the additive is two or more in In, Cu, Zr, Co, Bi, Ni, rare earth, by weight percentage, Ag 80 94%, Sn5 19%, In 0 6%, Cu0 3%, Zr 0 2%, Co 0 2%, Bi 0 3%, Ni 0 2%, rare earth 0 3%.The preparation method is using microwave heating, drying, oxidation AgSn powders, resistance heating drying, the resistance heating oxidation being different from conventional technique.Heated by microwave and prepare silver-colored oxidation silk material, solve the problems such as drying is uneven with oxidizing process, oxide particle size fluctuation is big, heating time is long, efficiency is low, power consumption is big, to improving production efficiency, the shortening production friendship phase has remarkable effect.
Description
Technical field
The present invention relates to a kind of method that electrical material, in particular to microwave heating prepare tin-oxygen-silver electric contact material.
Background technology
Microwave heating is exactly to utilize the features such as the wavelength of microwave is short, frequency is high, Quantum Properties are obvious, realizes and object is carried out
Heating.Microwave technology can not only effectively improve reaction conversion ratio, selectivity, but also many advantages, such as embody energy conservation and environmental protection, extensively
It is general to be applied to the fields such as radar, navigation, multiplex communication, remote sensing and TV, food.
At present, preparing the method for tin-oxygen-silver electric contact material has powder mixing method, chemical method, preoxidation, internal oxidation, its
Middle preoxidation has the characteristics that oxide particle is evenly distributed, flow is short, processing technology is simple and widely uses.
It is the environment by circumference to prepare the general heating means of tin-oxygen-silver electric contact material, with the radiation of heat
Or the surface of object is first heated by way of hot-air convection, then pass through the inside of heat transfer conductive object.This
Kind method heating time is long, efficiency is low.
Retrieved by pertinent literature, the pre-oxidation process retrieved prepares the following institute of patent document of silver tin oxide material
Show：
(1) patent CN1425790, a kind of preparation method of silver tin oxide material；
(2) patent CN102925738A, a kind of preparation method of silver tin oxide material；
(3) patent CN102312119A, a kind of preparation method of tin-oxygen-silver electric contact material.
AgSn powders in patent (1) use oxidation furnace to aoxidize (oxidation furnace is resistance-heated furnace)；Water atomization in patent (2)
During be passed through oxygen at the same time and aoxidized, then dried using resistance furnace；Internal oxidition is in interior oxidation furnace in patent (3)
Carry out (internal oxidition stove is resistance-heated furnace).Above-mentioned patent is led to using conventional electric resistance mode or using during water atomization
Enter dioxygen oxidation and prepare tin-oxygen-silver electric contact material, there are heating time is long, energy consumption is big, powder oxidation is uneven in oxidizing process
Even, causing oxide particle size, there are the problem of notable difference.
The content of the invention
The purpose of the present invention is for the water atomization powder in the presence of existing tin-oxygen-silver electric contact material preparation process
The problems such as uneven, heating time is long, efficiency is low, power consumption is big is aoxidized in drying, oxidizing process, and a kind of microwave heating is provided
The method for preparing tin-oxygen-silver electric contact material, is dried, oxidation uniformity is good, improves production effect by this method powder
Rate, the uniformity for shortening the production friendship phase, improving oxide particle size.
To achieve the above object, the technical scheme is that comprising the following steps：
(1) silver ingot, tin slab, additive are put into mid-frequency melting furnace melting, water mist chemical conversion AgSn alloy powders；
(2) AgSn alloy powders obtained by step (1) dried by microwave heating equipment, aoxidized；
(3) ingot blank is made in the powder high temperature insostatic pressing (HIP) after step (2) is aoxidized；
(4) spindle of step (3) is sintered in having oxygen atmosphere；
(5) spindle after step (4) is sintered is thermally processed into silk material.
Further set is the step (1) described additive for any three kinds in In, Cu, Zr, Co, Bi, Ni, rare earth
Or three kinds of combination of the above.
Further setting is the component of silver ingot, tin slab, additive, by weight percentage, Ag 80-94%, Sn 5-19%,
In 0-6%, Cu 0-3%, Zr 0-2%, Co 0-2%, Bi 0-3%, Ni 0-2%, rare earth 0-3%.
Further setting is that the drying in the step (2) is carried out in microwave heating equipment, with 5 DEG C~40 DEG C/min
Programming rate reaches 200-350 DEG C of drying AgSn alloy powder, and powder tiles thickness in 1-5mm；Then in microwave heating equipment
Upper progress powder oxidation exists, and reaches 400-800 DEG C with 10 DEG C~50 DEG C/min of programming rate and is aoxidized, when amounting to insulation
Between 5-60min.
Further setting is that the temperature of high temperature insostatic pressing (HIP) in the step (3) is 400-800 DEG C, pressure 100-200MPa, ingot
A diameter of 50-110mm of base.
Further setting is that the sintering of the step (4) uses resistance stove heat, and 750-900 DEG C of temperature, keeps the temperature 5-
60min, oxygen pressure 0.1-1MPa.
It is that the thermal processing method of the step (5) is resistance heating or Frequency Induction Heating further to set, temperature 750-
900 DEG C, 1-5h is kept the temperature, extruding silk material specification is Ф 3mm- Ф 8mm.
It is an advantage of the invention that in siller tin oxide electric contact material is prepared, using microwave heating, drying, oxidation powder, oxygen
During change temperature uniformity it is good, oxidation be more uniformly distributed.The technological process is simple, is readily produced.
Meanwhile the present invention by heated object internal dipole molecule high-frequency reciprocating move, produce " interior frictional heat " and make by
Heated material temperature raises, and is not necessary to any heat transfer process, has reached elimination Ag and SnO2Deng internal stress, optimization oxide
The wetability for being arranged of preferred orient, improving tin oxide and silver matrix and interface binding power of grain, reduce relay electrical performance test
During oxide particle splash, greatly promote slider material resistance to scaling loss performance purpose.
Silk material metallographic structure prepared by this method is uniform, and the discreteness of mechanical and physical performance is small, adds so as to improve rivet
The stability of stability and relay electric life during work.
The present invention is described further with reference to specification drawings and specific embodiments.
Brief description of the drawings
The process flow chart of Fig. 1 present invention.
Embodiment
The present invention is specifically described below by embodiment, is served only for that the present invention is further described, no
It is understood that for limiting the scope of the present invention, the technician in the field can be according to the content of foregoing invention to the present invention
Make some nonessential modifications and adaptations.
(1) silver ingot, tin slab, additive are put into mid-frequency melting furnace melting, water mist chemical conversion AgSn powders, with percentage by weight
Meter, Ag 80%, Sn19%, In 0%, Cu0.2%, Zr 0.2%, Co 0.1%, Bi 0.2%, Ni 0.1%, rare earth 0.2%；
(2) 200 DEG C of drying AgSn powders are reached with 5 DEG C/min of programming rate, powder tiling thickness is 5mm, then with 10
DEG C/min programming rate reach 400 DEG C, soaking time 60min；
(3) ingot blank is made in the powder high temperature insostatic pressing (HIP) after aoxidizing, and the temperature of high temperature insostatic pressing (HIP) is 400 DEG C, pressure 200MPa, ingot blank
A diameter of 110mm；
(4) spindle after isostatic pressed is sintered in oxygen atmosphere, 750 DEG C of temperature, keeps the temperature 60min, oxygen pressure 1MPa.
(5) spindle after sintering is kept the temperature into 1h in resistance heating or Frequency Induction Heating, 900 DEG C of temperature, extruding silk material is advised
Lattice are Ф 8mm.
(6) the silk material performance that the performance of silk material in embodiment one is prepared with common process is compared, specific data
It is as shown in the table.As can be seen from the data in the table, the performance discreteness of the present embodiment is substantially better than the silver-colored oxygen of common process production
Change tin silk material.
Silk material performance compares
(7) silk material system in embodiment one is broken into rivet, is assembled into relay and carries out electrical endurance test, and prepared with common process
The electrical property of silk material compare, specific data are as shown in the table.
Relay test condition
Relay test result
Embodiment two：
(1) silver ingot, tin slab, additive being put into mid-frequency melting furnace melting, water mist is melted into AgSn powders, by weight percentage,
Ag 94%, 3Sn5%, In 0.8%, Cu0.2%；
(2) 350 DEG C of drying AgSn powders, powder tiling thickness 0.5mm, then with 50 are reached with 40 DEG C/min of programming rate
DEG C/min programming rate reach 800 DEG C, soaking time 5min；
(3) the powder isostatic pressing after aoxidizing obtains ingot blank, and isostatic pressed is into ingot blank, and the temperature of high temperature insostatic pressing (HIP) is 800 DEG C, pressure
100MPa, a diameter of 50mm of ingot blank.
(4) spindle after isostatic pressed is sintered in oxygen atmosphere, 900 DEG C of temperature, keeps the temperature 5min, oxygen pressure
0.1MPa。
(5) spindle after sintering is heated in resistance furnace, 750 DEG C of temperature, keeps the temperature 5h, extruding silk material specification is Ф 3mm.
(6) the silk material performance that the performance of silk material in embodiment two is prepared with common process is compared, specific data
It is as shown in the table.As can be seen from the data in the table, the performance discreteness of the present embodiment is substantially better than the silver-colored oxygen of common process production
Change tin silk material.
(7) silk material system in embodiment one is broken into rivet, is assembled into relay and carries out electrical endurance test, and prepared with common process
The electrical property of silk material compare, specific data are as shown in the table.
Relay test condition
Relay test result
Claims (7)
1. a kind of method that microwave heating prepares tin-oxygen-silver electric contact material, it is characterised in that comprise the following steps：
(1) silver ingot, tin slab, additive are put into mid-frequency melting furnace melting, water mist chemical conversion AgSn alloy powders；
(2) AgSn alloy powders obtained by step (1) dried by microwave heating equipment, aoxidized；
(3) ingot blank is made in the powder high temperature insostatic pressing (HIP) after step (2) is aoxidized；
(4) spindle of step (3) is sintered in having oxygen atmosphere；
(5) spindle after step (4) is sintered is thermally processed into silk material.
2. the method that microwave heating according to claim 1 prepares tin-oxygen-silver electric contact material, it is characterised in that：It is described
Step (1) described additive is In, Cu, any three kinds or more combination in Zr, Co, Bi, Ni, rare earth.
3. the method that microwave heating according to claim 1 prepares tin-oxygen-silver electric contact material, it is characterised in that：Silver
Ingot, tin slab, the component of additive, by weight percentage, Ag 80-94%, Sn 5-19%, In 0-6%, Cu 0-3%, Zr 0-
2%th, Co 0-2%, Bi 0-3%, Ni 0-2%, rare earth 0-3%.
4. the method that the microwave heating according to claim 1 or 2 or 3 prepares tin-oxygen-silver electric contact material, its feature exist
In：Drying in the step (2) is carried out in microwave heating equipment, and the programming rate with 5 DEG C~40 DEG C/min reaches 200-
350 DEG C of drying AgSn alloy powders, powder tile thickness in 1-5mm；Then powder oxidation is carried out on microwave heating equipment, with
10 DEG C~50 DEG C/min of programming rate reaches 400-800 DEG C and is aoxidized, and amounts to soaking time 5-60min.
5. the method that the microwave heating according to claim 1 or 2 or 3 prepares tin-oxygen-silver electric contact material, its feature exist
In：The temperature of high temperature insostatic pressing (HIP) is 400-800 DEG C, pressure 100-200MPa in the step (3), a diameter of 50- of ingot blank
110mm。
6. the method that microwave heating according to claim 1 prepares tin-oxygen-silver electric contact material, it is characterised in that：It is described
The sintering of step (4) uses resistance stove heat, and 750-900 DEG C of temperature, keeps the temperature 5-60min, oxygen pressure 0.1-1MPa.
7. the method that microwave heating according to claim 1 prepares tin-oxygen-silver electric contact material, it is characterised in that：It is described
The thermal processing method of step (5) is resistance heating or Frequency Induction Heating, and 750-900 DEG C of temperature, keeps the temperature 1-5h, extruding silk material rule
Lattice are Ф 3mm- Ф 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711289931.8A CN108010772B (en) | 2017-12-08 | 2017-12-08 | A kind of method that microwave heating prepares tin-oxygen-silver electric contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711289931.8A CN108010772B (en) | 2017-12-08 | 2017-12-08 | A kind of method that microwave heating prepares tin-oxygen-silver electric contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108010772A true CN108010772A (en) | 2018-05-08 |
| CN108010772B CN108010772B (en) | 2019-05-24 |
Family
ID=62057503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711289931.8A Active CN108010772B (en) | 2017-12-08 | 2017-12-08 | A kind of method that microwave heating prepares tin-oxygen-silver electric contact material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108010772B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500391A (en) * | 2019-01-05 | 2019-03-22 | 桂林电器科学研究院有限公司 | A kind of preparation method of high ductility silver zinc oxide contact material |
| CN109500392A (en) * | 2019-01-05 | 2019-03-22 | 桂林电器科学研究院有限公司 | A kind of preparation method for the silver zinc oxide contact material improving ingot blank agglutinating property |
| CN111197925A (en) * | 2020-01-13 | 2020-05-26 | 郑州机械研究所有限公司 | Brazing flux drying method and system |
| CN114457249A (en) * | 2021-12-30 | 2022-05-10 | 无锡日月合金材料有限公司 | Silver-indium tin oxide based sintered material for electric contact and preparation method thereof |
| CN115386757A (en) * | 2022-07-07 | 2022-11-25 | 靖江市海源有色金属材料有限公司 | Method for manufacturing silver tin oxide contact material |
| CN115637349A (en) * | 2022-09-17 | 2023-01-24 | 浙江福达合金材料科技有限公司 | Silver tin oxide electric contact material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904317A (en) * | 1988-05-16 | 1990-02-27 | Technitrol, Inc. | Erosion resistant Ag-SnO2 electrical contact material |
| JPH10287938A (en) * | 1997-04-15 | 1998-10-27 | Mitsubishi Materials Corp | Electrical contact material made of heat treated silver alloy having excellent deposition resistance and consumption resistance |
| CN101202169A (en) * | 2007-10-23 | 2008-06-18 | 福达合金材料股份有限公司 | Method of preparing novel silver tin oxide silk electrical contact material |
| CN101510479A (en) * | 2009-03-18 | 2009-08-19 | 中国船舶重工集团公司第七二五研究所 | Method for preparing siller tin oxide electric contact material |
| CN102382997A (en) * | 2011-10-24 | 2012-03-21 | 中南大学 | Method for preparing WC-Co cemented carbide through microwave sintering |
-
2017
- 2017-12-08 CN CN201711289931.8A patent/CN108010772B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904317A (en) * | 1988-05-16 | 1990-02-27 | Technitrol, Inc. | Erosion resistant Ag-SnO2 electrical contact material |
| JPH10287938A (en) * | 1997-04-15 | 1998-10-27 | Mitsubishi Materials Corp | Electrical contact material made of heat treated silver alloy having excellent deposition resistance and consumption resistance |
| CN101202169A (en) * | 2007-10-23 | 2008-06-18 | 福达合金材料股份有限公司 | Method of preparing novel silver tin oxide silk electrical contact material |
| CN101510479A (en) * | 2009-03-18 | 2009-08-19 | 中国船舶重工集团公司第七二五研究所 | Method for preparing siller tin oxide electric contact material |
| CN102382997A (en) * | 2011-10-24 | 2012-03-21 | 中南大学 | Method for preparing WC-Co cemented carbide through microwave sintering |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500391A (en) * | 2019-01-05 | 2019-03-22 | 桂林电器科学研究院有限公司 | A kind of preparation method of high ductility silver zinc oxide contact material |
| CN109500392A (en) * | 2019-01-05 | 2019-03-22 | 桂林电器科学研究院有限公司 | A kind of preparation method for the silver zinc oxide contact material improving ingot blank agglutinating property |
| CN111197925A (en) * | 2020-01-13 | 2020-05-26 | 郑州机械研究所有限公司 | Brazing flux drying method and system |
| CN111197925B (en) * | 2020-01-13 | 2021-04-30 | 郑州机械研究所有限公司 | Brazing flux drying method and system |
| CN114457249A (en) * | 2021-12-30 | 2022-05-10 | 无锡日月合金材料有限公司 | Silver-indium tin oxide based sintered material for electric contact and preparation method thereof |
| CN115386757A (en) * | 2022-07-07 | 2022-11-25 | 靖江市海源有色金属材料有限公司 | Method for manufacturing silver tin oxide contact material |
| CN115637349A (en) * | 2022-09-17 | 2023-01-24 | 浙江福达合金材料科技有限公司 | Silver tin oxide electric contact material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108010772B (en) | 2019-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108010772B (en) | A kind of method that microwave heating prepares tin-oxygen-silver electric contact material | |
| CN104711443B (en) | A kind of graphene/copper composite material and preparation method thereof | |
| CN107794389B (en) | Silver tin oxide indium oxide electric contact material and preparation method thereof | |
| CN106048275B (en) | A kind of preparation method of ceramic phase dispersion strengthening copper alloy | |
| CN102796912B (en) | Preparation method of Al2O3 dispersion strengthened copper alloy bar | |
| CN103096529B (en) | There is the manufacture method of the silicon nitride heat generating body of higher reliability and fail safe | |
| CN102685942A (en) | Intelligent electric-heating element with PTC (Positive Temperature Coefficient) rare-earth thick film circuit and preparation method thereof | |
| CN104030679B (en) | A kind of BaTiO of reducing atmosphere sintering 3base lead-free PTC thermistor ceramic material and preparation method thereof | |
| CN107299298A (en) | A kind of preparation method of short carbon fiber/carbon/carbon-copper composite material | |
| CN106191511B (en) | The preparation method of copper-chromium contact material | |
| CN106810915B (en) | A kind of novel magnetic exothermic paint | |
| CN102925738B (en) | Method for preparing silver tin oxide material | |
| CN101624662B (en) | Method for preparing W-Cu alloy in microwave infiltration way | |
| CN103934451B (en) | A kind of preparation method of alumina dispersion-strenghtened copper alloyed powder | |
| CN101707156B (en) | Method for preparing Ag-ZnO-doped electrical contact material | |
| CN105948726A (en) | Preparation method for nanocrystalline alumina ceramic | |
| CN104103413A (en) | Method for preparing magnetic powder core with high-flux magnet ring performance | |
| CN105801105A (en) | Method for preparing deoxidized oxide pelleting powder | |
| CN102925727B (en) | Preparation method for high-performance Zn@W-Cu heat composite | |
| CN102260074B (en) | High-temperature negative temperature coefficient (NTC) material and preparation method thereof | |
| CN104370554B (en) | A kind of silicon nitride composite ceramics heater material and preparation method thereof | |
| CN108585831A (en) | The preparation method of low-resistivity ITO target | |
| CN102731068A (en) | Method for preparing low-density ITO evaporation target material | |
| CN105622084A (en) | Preparation method of zinc oxide pressure-sensitive resistor | |
| CN108585832A (en) | The preparation method of tin indium oxide target material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220210 Address after: 325025 No. 308, Binhai fifth road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Fuda alloy material technology Co.,Ltd. Address before: No. 518, Binhai 4th Road, Binhai Park, Wenzhou Economic and Technological Development Zone, Zhejiang Province, 325000 Patentee before: FUDA ALLOY MATERIALS Co.,Ltd. |
|
| TR01 | Transfer of patent right |