JPH0448520A - Composite electric contact - Google Patents
Composite electric contactInfo
- Publication number
- JPH0448520A JPH0448520A JP15814190A JP15814190A JPH0448520A JP H0448520 A JPH0448520 A JP H0448520A JP 15814190 A JP15814190 A JP 15814190A JP 15814190 A JP15814190 A JP 15814190A JP H0448520 A JPH0448520 A JP H0448520A
- Authority
- JP
- Japan
- Prior art keywords
- silver
- layer
- alloy
- copper
- contact
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 32
- 239000000956 alloy Substances 0.000 claims abstract description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 24
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910001080 W alloy Inorganic materials 0.000 claims abstract description 12
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 12
- 229910052709 silver Inorganic materials 0.000 claims abstract description 10
- 239000004332 silver Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- ASMQPJTXPYCZBL-UHFFFAOYSA-N [O-2].[Cd+2].[Ag+] Chemical compound [O-2].[Cd+2].[Ag+] ASMQPJTXPYCZBL-UHFFFAOYSA-N 0.000 abstract description 6
- IVQODXYTQYNJFI-UHFFFAOYSA-N oxotin;silver Chemical compound [Ag].[Sn]=O IVQODXYTQYNJFI-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 41
- 239000000463 material Substances 0.000 description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 238000005219 brazing Methods 0.000 description 6
- UYKQQBUWKSHMIM-UHFFFAOYSA-N silver tungsten Chemical compound [Ag][W][W] UYKQQBUWKSHMIM-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- AUSOIVYSFXBTNO-UHFFFAOYSA-N [O--].[O--].[Ag+].[In+3] Chemical compound [O--].[O--].[Ag+].[In+3] AUSOIVYSFXBTNO-UHFFFAOYSA-N 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 244000062175 Fittonia argyroneura Species 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、複合型電気接触子に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to a composite electrical contact.
（従来技術とその問題点）
遮断機や電気開閉器などにおいて使用される電気接点に
ついては、耐溶着性、接触抵抗安定性、および耐消耗性
などが重要視されている。(Prior art and its problems) For electrical contacts used in circuit breakers, electrical switches, etc., importance is placed on welding resistance, contact resistance stability, wear resistance, and the like.
このような電気接点として、例えば、３０％程度の銅を
含有する銅−タングステン系、銅−炭化タングステン系
合金、６０％程度の銀を含有する銀−タングステン系、
銀−炭化タングステン系合金、８５％程度の銀を含有す
る銀−酸化カドミウム系、銀−酸化インジウム系、銀−
酸化スズ系合金が知られている。Examples of such electrical contacts include copper-tungsten alloys containing about 30% copper, copper-tungsten carbide alloys, silver-tungsten alloys containing about 60% silver,
Silver-tungsten carbide based alloy, silver-cadmium oxide based alloy containing about 85% silver, silver-indium oxide based alloy, silver-
Tin oxide alloys are known.
しかし、これらの接点材料は一長一短があり、すべての
性能を満足するものはない。However, these contact materials have advantages and disadvantages, and none of them satisfies all performance requirements.
例えば、銅−タングステン系、銅−炭化タングステン系
合金は低価格で機械的強度も強く、優れた耐アーク性、
耐溶着性を有するが、高温で著しく酸化され接触抵抗が
不安定である。For example, copper-tungsten alloys and copper-tungsten carbide alloys are inexpensive, have strong mechanical strength, and have excellent arc resistance.
Although it has welding resistance, it is significantly oxidized at high temperatures and has unstable contact resistance.
銀−タングステン系、銀−炭化タングステン系合金は接
触抵抗が低く安定しているが、しかし、中負荷程度の開
閉器に使用した場合、初期溶着が起こり易い。Silver-tungsten alloys and silver-tungsten carbide alloys have low contact resistance and are stable, but when used in switches with medium loads, initial welding is likely to occur.
銀−酸化カドミウム系、銀−酸化インジウム系、銀−酸
化スズ系合金は接触抵抗が低く安定し、初期溶着も起こ
しにくいが、しかし、定格の１０倍以上の短絡責務に対
して著しく劣る。Silver-cadmium oxide, silver-indium oxide, and silver-tin oxide alloys have low and stable contact resistance and are less likely to cause initial welding, but are significantly inferior in terms of short-circuit liability that is 10 times or more the rated value.
また、最近これらを改善した接点として第一層が銀を主
体とした合金、第二層が拡散防止層としてのニッケル層
、第三層が銅を２０〜６０重量％含有する銅−タングス
テン系合金または銅−炭化タングステン系合金から成る
複合電気接触子が開発されている。In addition, as a contact that has recently improved these, the first layer is an alloy mainly composed of silver, the second layer is a nickel layer as a diffusion prevention layer, and the third layer is a copper-tungsten alloy containing 20 to 60% by weight of copper. Alternatively, a composite electrical contact made of a copper-tungsten carbide alloy has been developed.
しかし、上記の電気接触子は導電性台材との接合にろう
材を使用せざるをえないため、ノーヒユーズブレーカに
搭載した場合、度々接点の脱落がおこるという欠点があ
る。However, since the above-mentioned electric contact must use a brazing material to join it to the conductive base material, it has the disadvantage that the contact often falls off when mounted on a no-fuse breaker.
（発明の目的）
本発明は、上記事情を鑑みて、定格電流開閉において安
定な接触抵抗特性を保持し、短絡時においても優れた責
務を有し、しかも接点が温度上昇しても容易に脱落しな
い電気接触子を提供することを目的とするものである。(Objective of the Invention) In view of the above circumstances, the present invention maintains stable contact resistance characteristics at rated current switching, has excellent responsibility even in the event of a short circuit, and moreover, does not easily fall off even when the contact temperature rises. The purpose of this invention is to provide an electrical contact that does not
（問題点を解決するための手段）
本発明は、複合電気接触子において、銀を主体とした合
金から成る第一層と、ニッケルから成る第二層と、銅を
２０〜６０重量％含有する銅−タンゲステン系合金また
は銅−炭化タングステン系合金から成る第三層と、ニッ
ケルから成る第四層と、プロジェクションを有する銀か
ら成る第五層の構造から成ることを特徴とする複合電気
接触子である。(Means for Solving the Problems) The present invention provides a composite electrical contact that includes a first layer made of an alloy mainly composed of silver, a second layer made of nickel, and a copper content of 20 to 60% by weight. A composite electrical contact comprising a third layer made of a copper-tungsten alloy or a copper-tungsten carbide alloy, a fourth layer made of nickel, and a fifth layer made of silver with a projection. be.
上記複合電気接触子の各層の厚みについては、第一層は
短絡電流が流れた時に素早く消耗し、表層部に第二層が
現れるように厚みが１０μｍ以上５００μｍ以下で、第
二層と第四層は、拡散防止層として働（ために厚みが１
μｍ以上１００μｍ以下で、第三層は十分な短絡責務を
持たせるため厚みは０．１ｓ＋ｍ以上で、第五層は導電
性台材との接合をするため１００μｍ以上が必要である
。Regarding the thickness of each layer of the above composite electric contact, the first layer is quickly consumed when a short circuit current flows, and the thickness is 10 μm or more and 500 μm or less so that the second layer appears on the surface layer, and the second layer and the fourth layer are The layer acts as a diffusion prevention layer (so it has a thickness of 1
The third layer must have a thickness of 0.1 s+m or more to have sufficient short-circuiting responsibility, and the fifth layer must have a thickness of 100 μm or more to bond with the conductive base material.
本発明において、第一層は接触抵抗が低（安定であり、
短絡電流が流れた時に素早く消耗し表層部に第二層が現
れる銀糸合金でなければならず、このような合金として
、銀−酸化カドミウム系、銀−酸化インジウム系、銀−
酸化スズ系合金がある。In the present invention, the first layer has low contact resistance (stable,
It must be a silver thread alloy that is quickly consumed when a short circuit current flows and a second layer appears on the surface.Such alloys include silver-cadmium oxide, silver-indium oxide, and silver-indium oxide.
There are tin oxide alloys.
第二層は拡散防止層として働く金属であれば良いが、加
工性および第一層と第三層との接合性を考慮するとニッ
ケルでなければならない。The second layer may be any metal that functions as a diffusion prevention layer, but should be made of nickel in view of workability and bondability between the first layer and the third layer.
第三層は短絡責務の優れる合金系でなければならず、例
えば該合金系としては銀−タングステン系、銀−炭化タ
ングステン系、銅−タングステン系、銅−炭化タングス
テン系合金が知られているが、銀糸合金は定格電流の１
００倍以上の短絡責務に対して著しく劣るもので、銅系
合金は低度であるうえ、融点、沸点が高く、機械的強度
が大きく、優れた耐アーク性や耐溶着性を有するので、
銅−タングステン系もしくは銅−炭化タングステン系合
金でなければならないものである。The third layer must be made of an alloy with excellent short-circuit resistance. For example, known alloys include silver-tungsten, silver-tungsten carbide, copper-tungsten, and copper-tungsten carbide. , the silver thread alloy has a rated current of 1
Copper-based alloys have a low resistance to short-circuit liability of 00 times or more, and have high melting and boiling points, high mechanical strength, and excellent arc resistance and welding resistance.
It must be a copper-tungsten alloy or a copper-tungsten carbide alloy.
第四層は前記第二層と同様拡散防止層として働く金属で
あれば良いが、加工性および第三層と第五層との接合性
を考慮するとニッケルでなければならない。The fourth layer may be any metal that acts as a diffusion prevention layer like the second layer, but should be made of nickel in consideration of workability and bondability between the third layer and the fifth layer.
第五層は台材にスポット溶接できるようにプロジェクシ
ョンを有する銀でなければならないのは、接点と合材と
の接合にはろう材を用いる方法もあるが、ろう材は接点
や台材より融点の低いものを用いるので、接点が温度上
昇して高温になった時にはろう材が溶けて剥離すること
が生じ易く、よって、中負荷以上で使用する接点と合材
との接合には抵抗溶接が望ましいからである。The fifth layer must be made of silver with a projection so that it can be spot welded to the base material.There is also a method of using a brazing metal to join the contacts and the composite material, but the melting point of the brazing metal is higher than that of the contacts and the base material. Since a material with a low resistance to heat is used, when the temperature of the contact rises and the temperature rises, the filler metal tends to melt and peel off. Therefore, resistance welding is not recommended for joining contacts and composite materials that are used under medium loads or higher. Because it is desirable.
（実施例）
第一層に銀−酸化スズ系合金、または銀−酸化カドミウ
ム系合金を第二層にニッケルを、第三層に銅−タングス
テン系合金または銅−炭化タングステン系合金を、第四
層にニッケルを、第五層に銀を厚みの比を２：０．５：
２２：０．５：５になるように配列し、８５０℃で加熱
しながら、圧力１００ ｋｇ／ｃｎｆで熱間圧着する。(Example) The first layer is a silver-tin oxide alloy or a silver-cadmium oxide alloy, the second layer is nickel, the third layer is a copper-tungsten alloy or a copper-tungsten carbide alloy, and the fourth layer is a copper-tungsten alloy or a copper-tungsten carbide alloy. The thickness ratio of nickel in the layer and silver in the fifth layer is 2:0.5:
They were arranged in a ratio of 22:0.5:5 and hot-pressed at a pressure of 100 kg/cnf while heating at 850°C.
その後、圧延しプレス加工をへて直径５ｎｍ、厚み３ｍ
ｍの電気接触子を作製した。After that, it is rolled and pressed to a diameter of 5 nm and a thickness of 3 m.
m electrical contacts were produced.
（従来例）
第一層に銀−酸化スズ系合金、または銀−酸化カドミウ
ム系合金を第二層にニッケルを、第三層に銅−タングス
テン系合金または銅−炭化タングステン系合金を厚みの
比を２：０．５：２７になるように配列し、８５０℃で
加熱しながら、圧力１００ｋｇ／ｃＩＴｒで熱間圧着す
る。(Conventional example) The first layer is silver-tin oxide alloy or silver-cadmium oxide alloy, the second layer is nickel, and the third layer is copper-tungsten alloy or copper-tungsten carbide alloy. were arranged in a ratio of 2:0.5:27, and hot-pressed at a pressure of 100 kg/cITr while heating at 850°C.
その後、圧延しプレス加工をへて直径５Ｉ１ｍ、厚み３
ｎｍの電気接触子を作製した。After that, it is rolled and pressed to a diameter of 5I1m and a thickness of 3mm.
A nanometer electrical contact was fabricated.
上記実施例と従来例で作製した電気接触子をりん青銅か
ら成るノーヒユーズブレーカ用の導電性台材に、実施例
はプロジェクション溶接で、従来例はＢＡｇ−８のろう
材でろう付けをし、熱耐久試験を行った。The electrical contacts produced in the above embodiment and conventional example were brazed to a conductive base material for a no-fuse breaker made of phosphor bronze by projection welding in the embodiment and with BAg-8 brazing material in the conventional example, A thermal durability test was conducted.
熱耐久試験の条件は大気中で温度８５０℃で１分間保持
し、接点と導電性台材との接合性を調べたところ、下表
のような結果を得た。The conditions for the thermal durability test were that the temperature was maintained at 850° C. for 1 minute in the air, and the bonding properties between the contacts and the conductive base material were examined, and the results shown in the table below were obtained.
（以下余白）
以上の結果からも明らかのように、従来例ではろう材の
融点以上加熱を行っているので全て脱落した。(Left below) As is clear from the above results, in the conventional example, the brazing material was heated above its melting point, so all of it fell off.
一方、実施例ではろう付は部分がないので脱落はなかっ
た。On the other hand, in the example, there was no brazing part, so there was no falling off.
（発明の効果）
従来短絡電流を遮断した時、接点が高温になり、接点の
脱落が度々発生していた。(Effects of the Invention) Conventionally, when the short circuit current was interrupted, the contacts became hot and often fell off.
しかし、本発明によれば、接点が高温になっても脱落が
起きなくなり、効果大なるものである。However, according to the present invention, even if the contact reaches a high temperature, the contact does not fall off, which is very effective.
出願人 田中貴金属工業株式会社Applicant: Tanaka Kikinzoku Kogyo Co., Ltd.
Claims (1)
ら成る第一層と、ニッケルから成る第二層と、銅を２０
〜６０重量％含有する銅−タングステン系合金または銅
−炭化タングステン系合金から成る第三層と、ニッケル
から成る第四層と、プロジェクションを有する銀から成
る第五層の構造から成ることを特徴とする複合電気接触
子。(1) In a composite electric contact, a first layer made of an alloy mainly composed of silver, a second layer made of nickel, and a copper
It is characterized by having a structure of a third layer consisting of a copper-tungsten alloy or a copper-tungsten carbide alloy containing ~60% by weight, a fourth layer consisting of nickel, and a fifth layer consisting of silver having a projection. Composite electrical contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15814190A JPH0448520A (en) | 1990-06-15 | 1990-06-15 | Composite electric contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15814190A JPH0448520A (en) | 1990-06-15 | 1990-06-15 | Composite electric contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0448520A true JPH0448520A (en) | 1992-02-18 |
Family
ID=15665165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15814190A Pending JPH0448520A (en) | 1990-06-15 | 1990-06-15 | Composite electric contact |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448520A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2007111017A1 (en) * | 2006-03-24 | 2009-08-06 | ウチヤ・サーモスタット株式会社 | Clad contact material and method for mounting the clad contact |
-
1990
- 1990-06-15 JP JP15814190A patent/JPH0448520A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2007111017A1 (en) * | 2006-03-24 | 2009-08-06 | ウチヤ・サーモスタット株式会社 | Clad contact material and method for mounting the clad contact |
| JP4690454B2 (en) * | 2006-03-24 | 2011-06-01 | ウチヤ・サーモスタット株式会社 | Clad contact material and method for mounting the clad contact |
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