CN101038818A - Electric contact material alloy based on silver tin Oxide-lanthanum oxide and production process therefor - Google Patents
Electric contact material alloy based on silver tin Oxide-lanthanum oxide and production process therefor Download PDFInfo
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- CN101038818A CN101038818A CN 200710020955 CN200710020955A CN101038818A CN 101038818 A CN101038818 A CN 101038818A CN 200710020955 CN200710020955 CN 200710020955 CN 200710020955 A CN200710020955 A CN 200710020955A CN 101038818 A CN101038818 A CN 101038818A
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- tin oxide
- lanthana
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- lanthanum
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Abstract
The invention relates to an electrical contact material which is based on silver tin oxide and lanthanum oxide and contains tin oxide and lanthanum oxide in a silver substrate, a quotient of the tin oxide in the material is 3.0-15%, a quotient of thelanthanum oxide in the material is 1-12%, and surplus is silver. A process step comprises: smelting and casting sycee, tin and lanthanum in a furnace, machining them into chippings, oxidating then under high temperature and high pressure to obtain a mixed pahse material which is based on the silver tin oxide and lanthanum oxide, crushing the material via machining, molding the chippings in a steel mould by pressure, and then extruding to strips and tapes under high temperature, subsequently drawing to obtain a wire product which is based on silver tin oxide and lanthanum oxide; or mixing and compressing the silver, tin and lanthanum powers, then extruding to strips and tapes, drawing to obtain a wire product which is based on silver tin oxide and lanthanum oxide. The invention has a easy manufacturing and machining characteristic and a good re-machining performance, and a low material cost.
Description
Technical field:
The present invention relates to a kind of contact material and production technology thereof, especially relate to a kind of contact material and production technology thereof based on the siller tin oxide lanthana.Be mainly used in the electric contact of use such as the appliance switch of making various relays, contactor and the bimetallic composite rivet electric contact of high power relay use etc.
Before the present invention made, the contact material that widely uses mainly contained Ag-ZnO tin oxide, siller tin oxide cupric oxide, Ag-ZnO indium oxide and silver-tin oxide or indium oxide etc. at present.They exist some advantages and deficiency separately:
Ag-ZnO tin oxide and siller tin oxide copper oxide material cost are lower, but because of its fragility is bigger, cause its electrical property relatively poor, and production and processing characteristic and cycling processability are also relatively poor.
Ag-ZnO indium oxide and silver-tin oxide or indium oxide have electrical property preferably, easier production and processing characteristic and cycling processability preferably, but the key issue of its existence is material cost higher (indium is than also expensive 2～3 times of silver).
Summary of the invention:
The objective of the invention is to overcome above-mentioned deficiency, a kind of not only had electrical property preferably, easier production and processing characteristic and cycling processability and material cost but also low contact material and production technology thereof based on the siller tin oxide lanthana preferably are provided, make wire rod and various contact easily, satisfy appliance switch instructions for uses such as various relays, contactor, to substitute more expensive Ag-ZnO indium oxide or silver-tin oxide or indium oxide contact material.
The object of the present invention is achieved like this: a kind of contact material based on the siller tin oxide lanthana, it is to contain tin oxide and lanthana (La in silver matrix
2O
3), the share of tin oxide is 3.0～15 percentage by weights in the material, and the share of lanthana is 1～12 percentage by weight, and surplus is a silver, and each components contents sum is 100%.
In the above-mentioned contact material based on the siller tin oxide lanthana, the preferred share of tin oxide and lanthana is: the share of tin oxide is 6～12 percentage by weights, and the share of lanthana is 3.5～10 percentage by weights.
In the above-mentioned contact material based on the siller tin oxide lanthana, the most preferably share of tin oxide and lanthana is: the share of tin oxide is 8～9 percentage by weights, and the share of lanthana is 6～8 percentage by weights.
Also contain a kind of of nickel, calcium or several in the material of the present invention.To improve the machinability of material, improve the electric property of material and reduce silver-colored content, save cost.
Manufacturing technique method of the present invention is: silver ingot, tin and lanthanum are placed smelting furnace melting and ingot casting, be processed into chip, obtain mixing phase material through the HTHP oxidation based on the siller tin oxide lanthana, through the machining fragmentation, with chip extrusion forming in punching block, at high temperature push slivering, band then, the process drawing obtains the wire product based on the siller tin oxide lanthana again; Or with silver, tin oxide, lanthanum oxide powder mixing and briquetting, extruding slivering, band, the process drawing obtains the wire product based on the siller tin oxide lanthana.
The temperature of the HTHP oxidation of production technology of the present invention is 760～860 ℃, and injects the oxygen of 4～6kg/cm2, temperature retention time 20～36 hours, and the heating-up temperature of extruding slivering is 780～890 ℃.
Compare with existing contact material, the present invention adds tin and lanthanum and forms contact material based on the siller tin oxide lanthana in silver matrix, replace more expensive indium in Ag-ZnO indium oxide or the silver-tin oxide or indium oxide (lanthanum be indium price 1/25) with the cheaper lanthanum of price, reach the equal production and processing characteristic of Ag-ZnO indium oxide or silver-tin oxide or indium oxide and preferably in the cycling processability, reducing the material cost of the material of contact material widely.
The physical and mechanical properties of wire rod is:
Specification: φ 1.12～3.90mm
Density: 〉=9.83g/cm
3
Hardness: H
V4.9N＞800Mpa
Resistivity :≤2.4 μ cm
Tensile strength:＞230Mpa
Elongation:＞12%.
The compound rivet of the siller tin oxide lanthana contact of making meets every specification requirement of GB11096-89 fully.
Description of drawings
Fig. 1 is technological process of production figure of the present invention.
Embodiment
Example 1: take by weighing the 14.76kg silver ingot, place intermediate frequency furnace to melt, add 0.42kg tin and 0.82kg lanthanum subsequently successively, after homogenizing, billet is cast in scarfing cinder, cuts cast gate and removes surface impurity, cut into pieces, be heated to 760～860 ℃ in the high-pressure bottle of packing into, inject 4～6kg/cm
2Oxygen, be incubated 20～36 hours, then already oxidised fragment is processed into broken granule with punch press again, pack into and add the billet that is pressed into the long 250mm of φ 68mm in the punching block, the billet of moulding is squeezed into the web of φ 4.0mm under 780～890 ℃ of high temperature, becomes the wire product of φ 1.12～3.9mm through hot pull.
Example 2: as described in example 1, add the lanthanum of 13.812kg silver, 2.12kg tin and 0.068kg respectively, all the other are all with example 1.
Example 3: as described in example 1, difference is to add respectively the lanthanum of 14.47kg silver, 0.85kg tin and 0.68kg, and all the other are all with example 1.
Example 4: as described in example 1, difference is to add respectively the lanthanum of 14.07kg silver, 1.69kg tin and 0.24kg, and all the other are all with example 1.
Example 5: as described in example 1, difference is to add respectively the lanthanum of 14.38kg silver, 1.13kg tin and 0.49kg, and all the other are all with example 1.
Example 6: as described in example 1, difference is to add respectively the lanthanum of 14.32kg silver, 1.13kg tin and 0.55kg, and all the other are all with example 1.
Example 7: as described in example 1, difference is that the addition of silver is 14.752, adds 0.008kg nickel or calcium again, and all the other are all with example 1.
Example 8: as described in example 1, difference is that the addition of silver is 14.68, adds 0.08kg nickel or calcium again, and all the other are all with example 1.
Example 9: as described in example 1, difference is that the addition of silver is 14.672, adds 0.008kg nickel and 0.08kg calcium again, or adds 0.08kg nickel and 0.008kg calcium, and all the other are all with example 1.
Example 10: stir briquetting with silver, tin oxide, lanthana with the powder of above-mentioned different formulations, the extruding slivering, the process drawing obtains the contact material based on the siller tin oxide lanthana equally.
Example 11: stir briquetting with silver, tin oxide, nickel oxide, calcium oxide, lanthana with the powder of above-mentioned different formulations, the extruding slivering, the process drawing obtains the contact material based on the siller tin oxide lanthana equally.
Claims (7)
1, a kind of contact material based on the siller tin oxide lanthana, it is characterized in that it is to contain tin oxide and lanthana in silver matrix, the share of tin oxide is 3.0～15 percentage by weights in the material, the share of lanthana is 1～12 percentage by weight, surplus is a silver, and each components contents sum is 100%.
2, a kind of contact material according to claim 1 based on the siller tin oxide lanthana, the share that it is characterized in that tin oxide in the material is 6～12 percentage by weights, the share of lanthana is 3.5～10 percentage by weights.
3, a kind of contact material according to claim 2 based on the siller tin oxide lanthana, the share that it is characterized in that tin oxide in the material is 8～9 percentage by weights, the share of lanthana is 6～8 percentage by weights.
4,, it is characterized in that also containing in the material a kind of of nickel oxide, calcium oxide or several according to claim 1,2 or 3 described a kind of contact materials based on the siller tin oxide lanthana.
5, the production technology of the described contact material based on the siller tin oxide lanthana of a kind of claim 1, it is characterized in that its processing step is: silver ingot, tin and lanthanum are placed smelting furnace melting and ingot casting, be processed into chip, obtain mixing phase material through the HTHP oxidation based on the siller tin oxide lanthana, through the machining fragmentation, with chip extrusion forming in punching block, at high temperature push slivering, band then, the process drawing obtains the wire product based on the siller tin oxide lanthana again; Or with silver, tin, lanthanum powder and briquetting, extruding slivering, band, the process drawing obtains the wire product based on the siller tin oxide lanthana.
6, the production technology of a kind of contact material based on the siller tin oxide lanthana according to claim 5, the temperature that it is characterized in that the HTHP oxidation is 760～860 ℃, and inject the oxygen of 4～6kg/cm2, temperature retention time 20～36 hours, the heating-up temperature of extruding slivering is 780～890 ℃.
7, according to the production technology of claim 5 or 6 described a kind of contact materials based on the siller tin oxide lanthana, it is characterized in that also being added with in the described smelting furnace nickel, calcium with silver ingot, tin and lanthanum melting and ingot casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710020955 CN101038818A (en) | 2007-04-05 | 2007-04-05 | Electric contact material alloy based on silver tin Oxide-lanthanum oxide and production process therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710020955 CN101038818A (en) | 2007-04-05 | 2007-04-05 | Electric contact material alloy based on silver tin Oxide-lanthanum oxide and production process therefor |
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|---|---|
| CN101038818A true CN101038818A (en) | 2007-09-19 |
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| CN 200710020955 Pending CN101038818A (en) | 2007-04-05 | 2007-04-05 | Electric contact material alloy based on silver tin Oxide-lanthanum oxide and production process therefor |
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Cited By (5)
| 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 |
| CN101950696A (en) * | 2010-09-09 | 2011-01-19 | 浙江乐银合金有限公司 | Manufacturing method of silver tin oxide contact alloy material and manufactured alloy thereof |
| CN102568643A (en) * | 2012-03-01 | 2012-07-11 | 郴州市金贵银业股份有限公司 | AgSnO contact material and preparation method thereof |
| CN107240513A (en) * | 2016-03-29 | 2017-10-10 | 三菱电机株式会社 | Ag-Ni- metal oxide-types electric contact material and its manufacture method, breaker and electromagnetic contactor |
| 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 |
-
2007
- 2007-04-05 CN CN 200710020955 patent/CN101038818A/en active Pending
Cited By (8)
| 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 |
| CN101950696A (en) * | 2010-09-09 | 2011-01-19 | 浙江乐银合金有限公司 | Manufacturing method of silver tin oxide contact alloy material and manufactured alloy thereof |
| CN101950696B (en) * | 2010-09-09 | 2014-05-14 | 浙江乐银合金有限公司 | Manufacturing method of silver tin oxide contact alloy material |
| CN102568643A (en) * | 2012-03-01 | 2012-07-11 | 郴州市金贵银业股份有限公司 | AgSnO contact material and preparation method thereof |
| CN102568643B (en) * | 2012-03-01 | 2013-09-18 | 郴州市金贵银业股份有限公司 | AgSnO contact material and preparation method thereof |
| CN107240513A (en) * | 2016-03-29 | 2017-10-10 | 三菱电机株式会社 | Ag-Ni- metal oxide-types electric contact material and its manufacture method, breaker and electromagnetic contactor |
| CN107240513B (en) * | 2016-03-29 | 2019-02-22 | 三菱电机株式会社 | Ag-Ni- metal oxide-type electric contact material and its manufacturing method, breaker and electromagnetic contactor |
| 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 |
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