CN101202169A - Method of preparing novel silver tin oxide silk electrical contact material - Google Patents
Method of preparing novel silver tin oxide silk electrical contact material Download PDFInfo
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- CN101202169A CN101202169A CNA2007101563723A CN200710156372A CN101202169A CN 101202169 A CN101202169 A CN 101202169A CN A2007101563723 A CNA2007101563723 A CN A2007101563723A CN 200710156372 A CN200710156372 A CN 200710156372A CN 101202169 A CN101202169 A CN 101202169A
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Abstract
The invention relates to a novel preparing method of a material used for a silver tin oxide wire electric contact. The invention has a process that the material prepared by silver, tin and additives according to a certain proportion is put into an intermediate frequency smelter for melting; a high pressure water atomizing device is adopted for high pressure alloy atomization; atomized alloy powder is dried and oxidated for modification; an isostatic pressing ingot is formed after isostatic pressing treatment; the ingot is agglomerated in a heating furnace; the agglomerated ingot is delivered into an extruding machine to extrude wires; the extruded wire is pulled and annealed to get a finished wire. The material property and electric property of the silver tin oxide wire electric contact material manufactured by the method can satisfy the use condition with high requirement.
Description
Technical field
The invention belongs to the metal-base composites technical field, refer in particular to a kind of a kind of method of preparing novel silver tin oxide silk electrical contact material that satisfies the requirement of environment-friendly type electrical contact.
Background technology
The manufacture method of known siller tin oxide electric contact material has following several: (1) also is made up of by 70～97%, 3～22%, 0.1～8% weight content silver, nano tin dioxide and rare earth element.The preparation of the electrical contact of this material comprises the nano tin dioxide preparation of doping zinc-oxide or titanium oxide, the mixing of metal oxide powder and mix the back powder through die mould, sintering, extruding, wire drawing, make rivet or stick contact.(2) earlier silver-colored tin is founded in intermediate frequency furnace after the proportioning by a certain percentage, carry out alloy atomization with hydraulic atomized equipment then, be dried into powder after the atomizing, screening, oxidation furnace is depressed at uniform temperature and oxygen and is carried out oxidation in packing into, is processed into billet by isostatic cool pressing after the oxidation, carries out sintering then, after being squeezed into a material, wire drawing obtains finished product again.(3) silver ingot, Sn, Ni, Zn, Sn, In are placed melting, the extruding slivering down of melting and ingot casting, processing pulverizing, HTHP oxidation, pulverizing again, extrusion forming, high temperature, band, hot pull become wire rod.(4) adopt oxygen rich gas and water under high pressure for the spraying medium,, get Ag+SnO through modified, interior oxidation processes with Ag-Sn-Me melting atomization of liquid powdered
2+ MeO mixed material adopts the powder metallurgy pressing method to mixed material, suppress Ag+SnO
2+ MeO/Ag stratified billet spare makes Ag-SnO through sintering, forge hot processing
2-MeO electric contact material.(5) granularity with 2～12% weight is no more than 150 purpose SnO
2Powder, and the AgSn alloyed powder of the granularity of surplus between 50～1000 orders be raw material, wherein in the AgSn alloyed powder tin content between 1～5% weight; Above-mentioned raw materials powder secluding air ball milling or powerful mixing are prepared SnO
2The composite powder that is evenly distributed; Above-mentioned composite powder reshaped through oxidation in earlier make contact material, perhaps make contact material through oxidation in being shaped again earlier.
The manufacture method of these known siller tin oxide electric contact materials all is to study and invent for the environmental requirement of European Union's two instructions.From the manufacture method of these known siller tin oxide electric contact materials, there is certain difficulty in the materials processing of high oxide weight percent content, and material system is not very perfect, is difficult to satisfy the electric requirement that improves day by day.Wherein there is the pollution of environment in some manufacture method in manufacture process.
Summary of the invention
The objective of the invention is at the deficiency of processability in the manufacture method of known siller tin oxide electric contact material and material system and a kind of novel processing method of developing, the employing of hot pull method has successfully solved the processing problems of high oxide silver tin oxide silk material, and the material property of the silver tin oxide silk electrical contact material of this method manufacturing and electric property can satisfy the service condition of high request.
The present invention is achieved through the following technical solutions:
1) technological process:
With silver, tin, additive by a certain percentage the raw material after the proportioning in the intermediate frequency (IF) smelting stove, melt, carry out the high pressure alloy atomization by hydraulic atomized equipment, the atomized alloy powder is dried and the oxidation modifier treatment, formation waits the static pressure ingot blank after waiting static pressure, ingot blank carries out sintering in heating furnace, the sintering ingot blank send extruder to extrude a material, adopts the hot pull mode to be worked into finished product to extruding silk material;
2) material composition, shared percentage by weight:
Base-material:
Silver ingot, tin slab;
The percentage by weight of silver and tin is: silver-colored 98%-82%, tin 2%-18%;
Additive:
Additive is one or more in the following additive, and the content of additive is 0.1%-5%:T1-bismuth, T2-nickel, T3-indium, T4-zinc, T5-copper, T6-tungsten, T7-molybdenum, the T8-antimony of material system total content;
3) the material system form of the composition:
1. silver+tin:
2. silver+tin+a kind of additive;
3. silver+tin+more than one additives;
4) technical conditions:
1. atomizing pressure: 10MPa-50MPa;
2. oxide isolation: air;
3. oxidization time: 1 hour-20 hours;
4. isostatic compaction pressure: 50MPa-300MPa;
5. the ingot blank sintering temperature is 500 ℃-930 ℃, time 2-8 hour;
6. the ingot blank extrusion temperature is 600 ℃-900 ℃;
7. adopt the hot pull mode to process a material.
Compare advantage and the good effect that is had with known technology of preparing: (1) adopts the silver-colored ashbury metal powder particles degree of hydraulic atomized prepared to control easily, and granule surface activity is big; Particle is very easy to oxidation, need not special oxidation furnaces; (2) material system of science design has improved drawing abillity and electric property.(3) material structure is even, the poor Xi Qu of non-oxidation, and non-oxidation is assembled, and has guaranteed the consistency of material property; (4) the manufacture method raw material of this siller tin oxide electric contact material is prepared simply, and technological process is easy to control, and is with short production cycle, can realize producing in enormous quantities, and production cost is low; (5) adopt the success of hot pull technology solution the processing difficult problem of silver tin oxide silk material of high-oxide content; (6) environmentally safe in process of production, and the compliance with environmental protection requirements of material own.
Description of drawings
Fig. 1 is a process chart of the present invention.
Embodiment
Embodiment one: the silver (percentage by weight) by 98%, 2% tin (percentage by weight) are raw material, water atomization under the 30MPa pressure condition, in air through 12 hours interior oxidation modifier treatment, hydrostatic pressure at 250MPa depresses to ingot blank, carried out sintering in 780 ℃, 8 hours, under 770 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
Embodiment two: the silver (percentage by weight) by 90%, 9.7% tin (percentage by weight) are raw material, and add 0.3% bismuth, water atomization under the 39MPa pressure condition, in air through 8 hours interior oxidation modifier treatment, hydrostatic pressure at 260MPa depresses to ingot blank, carried out sintering in 800 ℃, 8 hours, under 790 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
Embodiment three: the silver (percentage by weight) by 90%, 9.5% tin (percentage by weight) are raw material, and add 0.3% bismuth, 0.2% zinc, water atomization under the 38MPa pressure condition, in air,, depress to ingot blank, carried out sintering in 780 ℃, 8 hours at the hydrostatic pressure of 250MPa through 12 hours interior oxidation modifier treatment, under 770 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
Embodiment four: the silver (percentage by weight) by 88%, 11% tin (percentage by weight) are raw material, and add 0.2% bismuth, 0.3% antimony, 0.5% indium, water atomization under the 45MPa pressure condition, in air through 10 hours interior oxidation modifier treatment, hydrostatic pressure at 250MPa depresses to ingot blank, carried out sintering in 780 ℃, 8 hours, under 840 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
Embodiment five: the silver (percentage by weight) by 82%, 16% tin (percentage by weight) are raw material, and add 0.3% bismuth, 1.7% indium, water atomization under the 50MPa pressure condition, in air,, depress to ingot blank, carried out sintering in 780 ℃, 10 hours at the hydrostatic pressure of 250MPa through 18 hours interior oxidation modifier treatment, under 900 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
Claims (6)
1. method of preparing novel silver tin oxide silk electrical contact material is characterized in that:
1) technological process:
With silver, tin, additive by a certain percentage the raw material after the proportioning in the intermediate frequency (IF) smelting stove, melt, carry out the high pressure alloy atomization by hydraulic atomized equipment, the atomized alloy powder is dried and the oxidation modifier treatment, formation waits the static pressure ingot blank after waiting static pressure, ingot blank carries out sintering in heating furnace, the sintering ingot blank send extruder to extrude a material, adopts the hot pull mode to be worked into finished product to extruding silk material;
2) material composition, shared percentage by weight:
Base-material:
Silver ingot, tin slab;
The percentage by weight of silver and tin is: silver-colored 98%-82%, tin 2%-18%;
Additive:
Additive is one or more in the following additive, and the content of additive is 0.1%-5%:T1-bismuth, T2-nickel, T3-indium, T4-zinc, T5-copper, T6-tungsten, T7-molybdenum, the T8-antimony of material system total content;
3) the material system form of the composition:
1. silver+tin:
2. silver+tin+a kind of additive;
3. silver+tin+more than one additives;
4) technical conditions:
1. atomizing pressure: 10MPa-50MPa;
2. oxide isolation: air;
3. oxidization time: 1 hour-20 hours;
4. isostatic compaction pressure: 50MPa-300MPa;
5. ingot blank sintering temperature 500-930 ℃, time 2-8 hour;
6. ingot blank extrusion temperature 600-900 ℃;
7. adopt hot pull method processing silk material.
2. method of preparing novel silver tin oxide silk electrical contact material according to claim 1, it is characterized in that: the silver by 98%, 2% tin are raw material, water atomization under the 30MPa pressure condition, in air through 12 hours interior oxidation modifier treatment, hydrostatic pressure at 250MPa depresses to ingot blank, carried out sintering in 780 ℃, 8 hours, under 770 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
3. method of preparing novel silver tin oxide silk electrical contact material according to claim 1, it is characterized in that: the silver by 90%, 9.7% tin are raw material, and add 0.3% bismuth, water atomization under the 39MPa pressure condition, in air,, depress to ingot blank, carried out sintering in 800 ℃, 8 hours at the hydrostatic pressure of 260MPa through 8 hours interior oxidation modifier treatment, under 790 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
4. method of preparing novel silver tin oxide silk electrical contact material according to claim 1, it is characterized in that: the silver by 90%, 9.5% tin are raw material, and add 0.3% bismuth, 0.2% zinc, water atomization under the 38MPa pressure condition, in air through 12 hours interior oxidation modifier treatment, hydrostatic pressure at 250MPa depresses to ingot blank, carried out sintering in 780 ℃, 8 hours, under 770 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
5. method of preparing novel silver tin oxide silk electrical contact material according to claim 1, it is characterized in that: the silver by 88%, 11% tin are raw material, and add 0.2% bismuth, 0.3% antimony, 0.5% indium, water atomization under the 45MPa pressure condition, in air through 10 hours interior oxidation modifier treatment, hydrostatic pressure at 250MPa depresses to ingot blank, carried out sintering in 780 ℃, 8 hours, under 840 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
6. method of preparing novel silver tin oxide silk electrical contact material according to claim 1, it is characterized in that: the silver by 82%, 16% tin are raw material, and add 0.3% bismuth, 1.7% indium, water atomization under the 50MPa pressure condition, in air through 18 hours interior oxidation modifier treatment, hydrostatic pressure at 250MPa depresses to ingot blank, carried out sintering in 780 ℃, 10 hours, under 900 ℃ temperature conditions, be squeezed into a material then, adopt the hot pull mode to be worked into finished product extruding silk material.
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| CNA2007101563723A CN101202169A (en) | 2007-10-23 | 2007-10-23 | Method of preparing novel silver tin oxide silk electrical contact material |
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| CNA2007101563723A CN101202169A (en) | 2007-10-23 | 2007-10-23 | Method of preparing novel silver tin oxide silk electrical contact material |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011003225A1 (en) * | 2009-07-08 | 2011-01-13 | 中南大学 | Preparation method for silver metal oxide made electric contact material |
| CN101982558A (en) * | 2010-11-25 | 2011-03-02 | 福达合金材料股份有限公司 | Grain refinement technology of silver-nickel electrical contact material and grain refinement technology of silver tin oxide electrical contact material |
| CN101707154B (en) * | 2009-09-24 | 2011-10-05 | 温州宏丰电工合金股份有限公司 | Method for preparing a silver-based electric contact material |
| CN102312119A (en) * | 2010-06-29 | 2012-01-11 | 福达合金材料股份有限公司 | Preparation method for silver tin oxide electrical contact material |
| CN102328086A (en) * | 2011-10-20 | 2012-01-25 | 福达合金材料股份有限公司 | Method for preparing silver tin oxide electrical contact |
| CN102350502A (en) * | 2011-10-27 | 2012-02-15 | 福达合金材料股份有限公司 | Preparation method of silver-stannic oxide by using physical metallurgical coating method |
| CN102509654A (en) * | 2011-10-27 | 2012-06-20 | 福达合金材料股份有限公司 | Preparation method for silver stannic oxide wire |
| CN102553960A (en) * | 2011-12-13 | 2012-07-11 | 浙江亚通焊材有限公司 | Preparation method for tin-bismuth series alloy temperature fuse material with high plasticity |
| CN101608279B (en) * | 2009-07-20 | 2012-10-03 | 温州宏丰电工合金股份有限公司 | Silver oxide electrical contact material and preparation method thereof |
| CN102820152A (en) * | 2012-08-21 | 2012-12-12 | 福达合金材料股份有限公司 | Method for preparing silver tin oxide electric contact material through jetting co-deposition |
| CN102925738A (en) * | 2012-11-07 | 2013-02-13 | 福达合金材料股份有限公司 | Method for preparing silver tin oxide material |
| CN103700532A (en) * | 2013-12-30 | 2014-04-02 | 桂林电器科学研究院有限公司 | Method for preparing silver tin oxide electrical contact material by spray drying |
| CN106158436A (en) * | 2016-07-20 | 2016-11-23 | 永兴金荣材料技术有限公司 | Ag-based electrical contact and manufacture method, special equipment, particular manufacturing craft |
| CN108010772A (en) * | 2017-12-08 | 2018-05-08 | 福达合金材料股份有限公司 | A kind of method that microwave heating prepares tin-oxygen-silver electric contact material |
| CN108149122A (en) * | 2017-12-27 | 2018-06-12 | 洛阳神佳窑业有限公司 | A kind of preparation method of silver-base alloy contact material |
| CN108220650A (en) * | 2017-12-27 | 2018-06-29 | 昆明贵金属研究所 | A kind of multicomponent oxide enhancing silver-based electric contact material and preparation method thereof |
| CN110877103A (en) * | 2019-10-10 | 2020-03-13 | 温州中希电工合金有限公司 | Silver tungsten carbide graphite composite spherical powder and preparation method thereof |
| CN112609247A (en) * | 2020-11-06 | 2021-04-06 | 东北大学 | Method for preparing silver tin oxide electric contact material by electrostatic spinning method |
| CN114334503A (en) * | 2021-12-24 | 2022-04-12 | 佛山市诺普材料科技有限公司 | Method for preparing silver tin oxide electrical contact material by low-temperature homogenization and material thereof |
| 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 |
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2007
- 2007-10-23 CN CNA2007101563723A patent/CN101202169A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011003225A1 (en) * | 2009-07-08 | 2011-01-13 | 中南大学 | Preparation method for silver metal oxide made electric contact material |
| CN101608279B (en) * | 2009-07-20 | 2012-10-03 | 温州宏丰电工合金股份有限公司 | Silver oxide electrical contact material and preparation method thereof |
| CN101707154B (en) * | 2009-09-24 | 2011-10-05 | 温州宏丰电工合金股份有限公司 | Method for preparing a silver-based electric contact material |
| CN102312119A (en) * | 2010-06-29 | 2012-01-11 | 福达合金材料股份有限公司 | Preparation method for silver tin oxide electrical contact material |
| CN102312119B (en) * | 2010-06-29 | 2013-07-10 | 福达合金材料股份有限公司 | Preparation method for silver tin oxide electrical contact material |
| CN101982558A (en) * | 2010-11-25 | 2011-03-02 | 福达合金材料股份有限公司 | Grain refinement technology of silver-nickel electrical contact material and grain refinement technology of silver tin oxide electrical contact material |
| CN101982558B (en) * | 2010-11-25 | 2012-06-27 | 福达合金材料股份有限公司 | Grain refinement technology of silver-nickel electrical contact material and grain refinement technology of silver tin oxide electrical contact material |
| CN102328086A (en) * | 2011-10-20 | 2012-01-25 | 福达合金材料股份有限公司 | Method for preparing silver tin oxide electrical contact |
| CN102509654A (en) * | 2011-10-27 | 2012-06-20 | 福达合金材料股份有限公司 | Preparation method for silver stannic oxide wire |
| CN102350502A (en) * | 2011-10-27 | 2012-02-15 | 福达合金材料股份有限公司 | Preparation method of silver-stannic oxide by using physical metallurgical coating method |
| CN102553960A (en) * | 2011-12-13 | 2012-07-11 | 浙江亚通焊材有限公司 | Preparation method for tin-bismuth series alloy temperature fuse material with high plasticity |
| CN102553960B (en) * | 2011-12-13 | 2014-01-22 | 浙江亚通焊材有限公司 | Preparation method for tin-bismuth series alloy temperature fuse material with high plasticity |
| CN102820152A (en) * | 2012-08-21 | 2012-12-12 | 福达合金材料股份有限公司 | Method for preparing silver tin oxide electric contact material through jetting co-deposition |
| CN102925738A (en) * | 2012-11-07 | 2013-02-13 | 福达合金材料股份有限公司 | Method for preparing silver tin oxide material |
| CN102925738B (en) * | 2012-11-07 | 2015-01-07 | 福达合金材料股份有限公司 | Method for preparing silver tin oxide material |
| CN103700532A (en) * | 2013-12-30 | 2014-04-02 | 桂林电器科学研究院有限公司 | Method for preparing silver tin oxide electrical contact material by spray drying |
| CN106158436A (en) * | 2016-07-20 | 2016-11-23 | 永兴金荣材料技术有限公司 | Ag-based electrical contact and manufacture method, special equipment, particular manufacturing craft |
| CN108010772A (en) * | 2017-12-08 | 2018-05-08 | 福达合金材料股份有限公司 | A kind of method that microwave heating prepares tin-oxygen-silver electric contact material |
| CN108149122A (en) * | 2017-12-27 | 2018-06-12 | 洛阳神佳窑业有限公司 | A kind of preparation method of silver-base alloy contact material |
| CN108220650A (en) * | 2017-12-27 | 2018-06-29 | 昆明贵金属研究所 | A kind of multicomponent oxide enhancing silver-based electric contact material and preparation method thereof |
| CN110877103A (en) * | 2019-10-10 | 2020-03-13 | 温州中希电工合金有限公司 | Silver tungsten carbide graphite composite spherical powder and preparation method thereof |
| CN112609247A (en) * | 2020-11-06 | 2021-04-06 | 东北大学 | Method for preparing silver tin oxide electric contact material by electrostatic spinning method |
| CN112609247B (en) * | 2020-11-06 | 2022-05-10 | 东北大学 | Method for preparing silver tin oxide electric contact material by electrostatic spinning method |
| CN114334503A (en) * | 2021-12-24 | 2022-04-12 | 佛山市诺普材料科技有限公司 | Method for preparing silver tin oxide electrical contact material by low-temperature homogenization and material thereof |
| 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 |
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Open date: 20080618 |