CN101950592B - Method for manufacturing silver tin oxide indium oxide contact alloy material and manufactured alloy thereof - Google Patents
Method for manufacturing silver tin oxide indium oxide contact alloy material and manufactured alloy thereof Download PDFInfo
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- CN101950592B CN101950592B CN 201010275979 CN201010275979A CN101950592B CN 101950592 B CN101950592 B CN 101950592B CN 201010275979 CN201010275979 CN 201010275979 CN 201010275979 A CN201010275979 A CN 201010275979A CN 101950592 B CN101950592 B CN 101950592B
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- tin oxide
- silver
- indium oxide
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Abstract
The invention discloses a method for manufacturing silver tin oxide indium oxide contact alloy material and a manufactured alloy thereof. The method comprises the following steps of: (1) smelting, namely smelting ingredients at the preset temperature, and continuously stirring in the smelting process; (2) casting into round ingots and turning external surfaces thereof; (3) performing hot rolling and cold rolling to form sheets; (4) performing oxygen-increasing treatment on the sheets in an inner oxidation furnace; (5) crushing and performing high-energy crushing treatment; (6) performing hot extrusion to prepare wire blanks; (7) drawing and annealing; and (8) using the obtained materials as finished products. The alloy comprises the following components in percentage by mass: 5.1 to 6.8 percent of Sn, 1.50 to 3.0 percent of In, 1.50 to 2.50 percent of rare earth additive and the balance of Ag. The method for manufacturing the silver tin oxide indium oxide contact alloy material has the advantages of simplified technology, easy implementation and excellent product performance.
Description
Technical field
The invention belongs to alloy manufacturing technology field, be specifically related to a kind of manufacture method and institute's alloyage thereof of silver-tin oxide or indium oxide contact alloy material.
Background technology
Along with the development of information electronic, automation, automobile and space technology, increasing to miniaturization, the demand high-power and electromechanical compos such as high reliability electrical equipment, switch, require more and more higher to its performance index.Siller tin oxide rare earth contact material is the very fast a kind of Novel non-toxic electrical contact material of development in recent years, he has the advantages such as Heat stability is good, anti-arc erosion and resistance fusion welding are strong, is the ideal material that replaces at present poisonous Agcdo in contactor, relay and switch.China electrical equipment association claimed to each manufacturer and research institution in 2003, and restriction is used and comprised the six class noxious substances such as mercury, cadmium, lead, Cr VI, Polybrominated biphenyl (PBB), PBDEs (PBDE) in electronic and electrical equipment (heater, air-conditioning, washing machine, small household appliances, information and communication apparatus, household electrical appliance, electric tool) and pony car.
The siller tin oxide contact is focus and the difficult point of at present low voltage electrical apparatus industry research both at home and abroad, replaces traditional AgCdO contact material with asepsis environment-protecting siller tin oxide rare earth.Because SnQ
2Particle is larger, and skewness has caused SnQ
2The contact resistance of material is larger, and temperature rise is larger, and temperature rise has limited the scope of application of siller tin oxide contact; Simultaneously, AgSnO
2Materials processing is difficulty comparatively, fails to obtain fine solution always.
Summary of the invention
The manufacture method that the purpose of this invention is to provide the silver-tin oxide or indium oxide contact alloy material that a kind of technique is comparatively simplified and properties of product are comparatively outstanding.
Another object of the present invention provides the comparatively outstanding silver-tin oxide or indium oxide contact alloy of a kind of performance that adopts the inventive method to make.
The technical scheme that realizes first purpose of the present invention is: a kind of manufacture method of silver-tin oxide or indium oxide contact alloy material may further comprise the steps:
1. melting: will prepare burden and carry out melting under preset temperature, described food ingredient is as follows:
Sn:5.1% to 6.8%;
In:1.50% to 3.0%;
Rare earth additive: 1.50% to 2.50%;
All the other are Ag;
Above-mentioned each content is the quality percentage composition; In fusion process, continue to stir;
2. be cast into billet, and machine at its outer surface;
3. then cold rolling after the hot rolling, it is rolled into thin slice;
4. in interior oxidation furnace thin slice being carried out oxygenation processes;
5. broken rear high-energy crushing is processed;
6. hot extrusion obtains wire blank;
7. drawing processing and annealing in process;
8. will obtain material as finished product.
Above-mentioned steps 1. in, will prepare burden and under 1000 ℃ to 1400 ℃, carry out melting;
Above-mentioned steps 4. in, oxidizing temperature is 600 ℃ to 750 ℃, oxygen partial pressure is 0.3 to 0.75MPa, oxidization time is 15 to 25 hours.
Above-mentioned steps 1. in, described food ingredient is preferably as follows:
Sn:5.25% to 6.55%;
In:1.83% to 2.48%;
Rare earth additive: 1.80% to 2.20%;
All the other are Ag;
Above-mentioned each content is the quality percentage composition; During melting, at first add Ag, after its fusing, add again Sn, In and rare earth.
Above-mentioned steps 5. in, in high energy ball mill, carry out high-energy crushing and process, the concrete technology parameter is as follows: motor speed is 1100 to 1425 rev/mins, the anchor clamps operating rate: 600 to 875 beats/mins.
Above-mentioned steps 6. in, extrusion temperature is 650 ℃ to 850 ℃, is preferably 700 ℃ to 750 ℃.
The filling rate that grinds medium is 50% to 70%; Above-mentioned steps 6. in, extrusion temperature
In carrying out the high-energy crushing processing procedure, sampling detects, and shuts down feeding when grain size is 0.5 to 500 micron in the sample.
Above-mentioned steps 7. in, when carrying out drawing and processing, every time drawing deformation amount is 14% to 16%, carries out annealing in process when total deformation is 40% to 60%, annealing temperature is 600 ℃ to 700 ℃.
7. above-mentioned steps repeats, until diameter reaches preliminary dimension, after annealing material is carried out pickling processes.
The technical scheme that realizes another object of the present invention is: a kind of silver-tin oxide or indium oxide contact alloy, and its product composition is:
Sn:5.1% to 6.8%; Be preferably 5.25% to 6.55%;
In:1.50% to 3.0%; Be preferably 1.83% to 2.48%;
Rare earth additive: 1.50% to 2.50%; Be preferably 1.80% to 2.20%;
All the other are Ag;
Above-mentioned each content is the quality percentage composition.
The present invention has positive effect:
(1) the inventive method integrated artistic is convenient to accurate operation, and is simple and feasible, easy to implement.
(2) the inventive method adopts high-energy crushing technique, can reach the hot-workability of improving alloy, makes the grain refinement of material, even tissue, surround and watch structure and segregation do not occur, eliminate the barren district of oxide, the compactness of Effective Raise product and the stability of contact resistance.
(3) product of the present invention is by adding an amount of rare earth and In, can be distributed in preferably in the silver matrix, can make initial temperature and maximum decline of end temp of oxidation in the AgSn be respectively 60 ℃ and 30 ℃, promote alloy inner oxidation, reduce erosion and the migration of silver, the refinement alloy structure increases its hardness, reduce contact resistance, improve resistance fusion welding and the anti-electrical arc erosion of contact; Have higher decomposition temperature (greater than 2000 ℃) owing to rare earth oxide in addition, and be suspended in its viscosity of increase in the silver-colored molten bath, reduce erosion and the migration of silver.Its hardening effect was comparatively obvious after silver alloy added rare earth, this is because rare earth has reduced silver-colored stacking fault energy, in cold deformation so that the friendship slippage of extended dislocation is more difficult, dislocation density improves, and the rare earth element segregation is near crystal boundary, formed the second-phase of stable dispersion, also strengthened silver alloy, in heating process, motion has produced stronger resistance to these second-phases to crystal boundary, the nucleation and growth of recrystal grain is suppressed, thereby has improved recrystallization temperature, so that final finished-product material has comparatively outstanding resistance fusion welding and anti-electrical arc erosion.
Embodiment
(manufacture method of embodiment 1, silver-tin oxide or indium oxide contact alloy material)
The present embodiment is a kind of manufacture method of silver-tin oxide or indium oxide contact alloy material, may further comprise the steps:
1. melting: will prepare burden and carry out melting under preset temperature, described food ingredient is as follows:
Sn：5.1％；
In：1.5％
Rare earth additive: 1.5%;
All the other are Ag;
Above-mentioned each content is the quality percentage composition;
To prepare burden and under 1400 ℃, carry out melting;
In fusion process, furnace temperature is heated to 1400 ℃, at first add Ag, after its fusing, add again Sn, In and rare earth, in whole fusion process, continue to stir, make its atom fully diffuse to form solid solution, alloying; The present embodiment is by adding an amount of rare earth and In, can be distributed in preferably in the silver matrix, can make initial temperature and maximum decline of end temp of oxidation in the AgSn be respectively 60 ℃ and 30 ℃, promote alloy inner oxidation, reduce erosion and the migration of silver, the refinement alloy structure increases its hardness, reduce contact resistance, improve resistance fusion welding and the anti-electrical arc erosion of contact; Have higher decomposition temperature (greater than 2000 ℃) owing to rare earth oxide in addition, and be suspended in its viscosity of increase in the silver-colored molten bath, reduce erosion and the migration of silver.Its hardening effect was comparatively obvious after silver alloy added rare earth, this is because rare earth has reduced silver-colored stacking fault energy, in cold deformation so that the friendship slippage of extended dislocation is more difficult, dislocation density improves, and the rare earth element segregation is near crystal boundary, formed the second-phase of stable dispersion, also strengthened silver alloy, in heating process, motion has produced stronger resistance to these second-phases to crystal boundary, the nucleation and growth of recrystal grain is suppressed, thereby has improved recrystallization temperature, so that final finished-product material has comparatively outstanding resistance fusion welding and anti-electrical arc erosion.
2. be cast into billet, and machine at its outer surface, epidermal area is removed in milling;
3. then cold rolling after the hot rolling, it is rolled into thin slice;
4. in interior oxidation furnace thin slice being carried out oxygenation processes; Oxidizing temperature is 600 ℃, and oxygen partial pressure is 0.45MPa, and oxidization time is 20 hours;
5. high-energy crushing is processed after the pelletizing fragmentation; Specifically carry out high-energy crushing and process in high energy ball mill, the concrete technology parameter is as follows: the filling rate that grinds medium is 60%, and motor speed is 1100 rev/mins, the anchor clamps operating rate: 600 beats/mins; In carrying out the high-energy crushing processing procedure, sampling detects, and shuts down feeding when grain size is 0.8 micron in the sample to carry out next step operation; Adopt high-energy crushing technique, can reach the hot-workability of improving alloy, make the grain refinement of material, even tissue is surrounded and watched structure and segregation do not occurred, eliminates the barren district of oxide, the compactness of Effective Raise product and the stability of contact resistance;
6. hot extrusion obtains wire blank; Extrusion temperature is 650 ℃; Through test, extrusion temperature is during greater than 850 ℃, and the material that squeezes out is cracked and particle, does not become linear; When temperature is lower than 650 ℃, extrudes little by little and just squeezed not out.
7. drawing processing and annealing in process; When carrying out the drawing processing, every time drawing deformation amount is 15%, carries out annealing in process when total deformation is 60%, and annealing temperature is 600 ℃;
7. above-mentioned steps repeats, until the material diameter reaches preliminary dimension, after annealing material is carried out pickling processes;
8. will obtain material as finished product.
The concrete technology parameter sees Table 1 in the present embodiment.
(manufacture method of embodiment 2-6, silver-tin oxide or indium oxide contact alloy material)
Embodiment 2-6 is substantially the same manner as Example 1, and difference is: among each embodiment in the correlation step concrete technology parameter and embodiment 1 different, specifically see Table 1.
Table 1
(embodiment 7-12, silver-tin oxide or indium oxide contact alloy)
Embodiment 7 to 12 is corresponding one by one with above-described embodiment 1 to embodiment 6 respectively, be respectively the silver-tin oxide or indium oxide contact alloy that produces according to corresponding embodiment of the method, be that embodiment 7 is alloys that above-described embodiment 1 is made, embodiment 8 is alloys that above-described embodiment 2 is made, the like.
Sampling detects to each embodiment alloy, can analyze the composition proportion of each embodiment among the embodiment 7 to 12, and testing result is indicated among the embodiment 7 to 12 among each embodiment, Sn:7% to 9%; Rare earth additive: 1.0% to 3.0%; All the other are Ag; Above-mentioned each content is the quality percentage composition.In addition it is carried out Performance Detection, the result proves that its performance is comparatively excellent, and parameter is as follows: density is more than or equal to 9.80 g/ccs; Hardness (HB) is more than or equal to 765MPa; Resistivity is less than or equal to 2.80 μ Ω .cm; Metallographic structure: particle is even; Electric life is more than 100,000 times.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And these belong to apparent variation or the change that connotation of the present invention extends out and still belong to protection scope of the present invention.
Claims (9)
1. the manufacture method of a silver-tin oxide or indium oxide contact alloy material may further comprise the steps:
1. melting: will prepare burden and carry out melting under preset temperature, described food ingredient is as follows:
Sn:5.1% to 6.8%;
In:1.50% to 3.0%;
Rare earth additive: 1.50% to 2.50%;
All the other are Ag;
Above-mentioned each content is the quality percentage composition; In fusion process, continue to stir;
2. be cast into billet, and machine at its outer surface;
3. then cold rolling after the hot rolling, it is rolled into thin slice;
4. in interior oxidation furnace thin slice being carried out oxygenation processes;
5. broken rear high-energy crushing is processed; It is to carry out high-energy crushing to process in high energy ball mill that described high-energy crushing is processed, and the concrete technology parameter is as follows: motor speed is 1100 to 1425 rev/mins, the anchor clamps operating rate: 600 to 875 beats/mins;
6. hot extrusion obtains wire blank;
7. drawing processing and annealing in process;
8. will obtain material as finished product.
2. the manufacture method of silver-tin oxide or indium oxide contact alloy material according to claim 1 is characterized in that: above-mentioned steps 1. in, will prepare burden and under 1000 ℃ to 1400 ℃, carry out melting;
Above-mentioned steps 4. in, oxidizing temperature is 600 ℃ to 750 ℃, oxygen partial pressure is 0.3 to 0.75MPa, oxidization time is 15 to 25 hours.
3. the manufacture method of silver-tin oxide or indium oxide contact alloy material according to claim 2 is characterized in that: above-mentioned steps 1. in, described food ingredient is as follows:
Sn:5.25% to 6.55%;
In:1.83% to 2.48%;
Rare earth additive: 1.80% to 2.20%;
All the other are Ag;
Above-mentioned each content is the quality percentage composition;
During melting, at first add Ag, after its fusing, add again Sn, In and rare earth.
4. the manufacture method of silver-tin oxide or indium oxide contact alloy material according to claim 1 is characterized in that: above-mentioned steps 6. in, extrusion temperature is 650 ℃ to 850 ℃.
5. the manufacture method of silver-tin oxide or indium oxide contact alloy material according to claim 4 is characterized in that: the filling rate that grinds medium is 50% to 70%; Above-mentioned steps 6. in, extrusion temperature is 700 ℃ to 750 ℃.
6. the manufacture method of silver-tin oxide or indium oxide contact alloy material according to claim 4 is characterized in that: in carrying out the high-energy crushing processing procedure, take a sample and detect, shut down feeding when grain size is 0.5 to 500 micron in the sample.
7. the manufacture method of silver-tin oxide or indium oxide contact alloy material according to claim 1, it is characterized in that: above-mentioned steps 7. in, when carrying out the drawing processing, every time drawing deformation amount is 14% to 16%, carry out annealing in process when total deformation is 40% to 60%, annealing temperature is 600 ℃ to 700 ℃.
8. the manufacture method of silver-tin oxide or indium oxide contact alloy material according to claim 7, it is characterized in that: 7. above-mentioned steps repeats, until diameter reaches preliminary dimension, after annealing material is carried out pickling processes.
9. silver-tin oxide or indium oxide contact alloy, its product composition is:
Sn:6.55% to 6.8%;
In:1.50% to 2.48%;
Rare earth additive: 1.50% to 1.8%;
All the other are Ag;
Above-mentioned each content is the quality percentage composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010275979 CN101950592B (en) | 2010-09-09 | 2010-09-09 | Method for manufacturing silver tin oxide indium oxide contact alloy material and manufactured alloy thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010275979 CN101950592B (en) | 2010-09-09 | 2010-09-09 | Method for manufacturing silver tin oxide indium oxide contact alloy material and manufactured alloy thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101950592A CN101950592A (en) | 2011-01-19 |
| CN101950592B true CN101950592B (en) | 2013-02-13 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073292A (en) * | 1991-12-12 | 1993-06-16 | 中国有色金属工业总公司昆明贵金属研究所 | Silver based alloy electric contact material |
| CN1167835A (en) * | 1997-03-17 | 1997-12-17 | 江阴市宏发合金材料厂 | Wire for silver-tin oxide or indium oxide electric contact and producing method thereof |
| CN1632894A (en) * | 2004-12-29 | 2005-06-29 | 河北工业大学 | Silver base rare earth alloy contact material for low-voltage switch electric appliance and method for preparing same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921939B2 (en) * | 1975-08-11 | 1984-05-23 | タナカキキンゾクコウギヨウ カブシキガイシヤ | Electrical contact materials for breakers |
| JPH07258769A (en) * | 1994-03-24 | 1995-10-09 | Tanaka Kikinzoku Kogyo Kk | Production of silver-oxide electrical contact material |
| JPH11140563A (en) * | 1997-11-10 | 1999-05-25 | Chugai Electric Ind Co Ltd | Electrical contact material |
-
2010
- 2010-09-09 CN CN 201010275979 patent/CN101950592B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073292A (en) * | 1991-12-12 | 1993-06-16 | 中国有色金属工业总公司昆明贵金属研究所 | Silver based alloy electric contact material |
| CN1167835A (en) * | 1997-03-17 | 1997-12-17 | 江阴市宏发合金材料厂 | Wire for silver-tin oxide or indium oxide electric contact and producing method thereof |
| CN1632894A (en) * | 2004-12-29 | 2005-06-29 | 河北工业大学 | Silver base rare earth alloy contact material for low-voltage switch electric appliance and method for preparing same |
Non-Patent Citations (2)
| Title |
|---|
| JP平11-140563A 1999.05.25 |
| JP平7-258769A 1995.10.09 |
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