JPS60248840A - Electrical contact material - Google Patents
Electrical contact materialInfo
- Publication number
- JPS60248840A JPS60248840A JP59104957A JP10495784A JPS60248840A JP S60248840 A JPS60248840 A JP S60248840A JP 59104957 A JP59104957 A JP 59104957A JP 10495784 A JP10495784 A JP 10495784A JP S60248840 A JPS60248840 A JP S60248840A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- electrical contact
- contact material
- resistance
- cadmium
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
- H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacture Of Switches (AREA)
- Contacts (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、電気接点材料に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to electrical contact materials.
（従来技術及びその問題点）
従来より内部酸化法により製作した電気接点材料の一つ
として銀−酸化ビスマスが用いられてきた。銀−酸化ビ
スマスは、耐アーク性、耐溶着特性に優れ安定した接触
抵抗等の接点性能を有するが、昨今、継電器の小型化に
伴い接触力、開離力の低下、接点の小型化、接点ギヤ・
ノブの狭小化に伴い耐溶着性に問題が生じてきた。この
為、さらに耐溶着性に優れた電気接点材が要望されてい
る。(Prior Art and its Problems) Silver-bismuth oxide has conventionally been used as one of the electrical contact materials manufactured by internal oxidation method. Silver-bismuth oxide has contact performance such as excellent arc resistance and welding resistance, and stable contact resistance. gear·
As knobs become narrower, problems have arisen in welding resistance. For this reason, there is a demand for electrical contact materials with even better welding resistance.
（発明の目的）
本発明は斯かる要望を満たすべくなされたもので、銀−
酸化ビスマスより成る電気接点材料の安定した接触抵抗
を゛そのまま具有し、耐溶着性が大幅に向上した電気接
点材料を提供せんとするものである。(Object of the Invention) The present invention has been made to meet such a demand, and is
It is an object of the present invention to provide an electrical contact material which retains the stable contact resistance of an electrical contact material made of bismuth oxide and has significantly improved welding resistance.
（問題点を解決するための手段）
本発明の電気接点材料の一つは、ビスマスト２０重量％
と、カドミウム０．１〜５重量％、マンガン０．５〜５
重量％、亜鉛０．５〜５重量％と、残部銀から成る材料
であって、且つ内部酸化されているものである。(Means for Solving the Problems) One of the electrical contact materials of the present invention is bismast 20% by weight.
and cadmium 0.1-5% by weight, manganese 0.5-5%
The material consists of 0.5-5% by weight of zinc and the balance silver, and is internally oxidized.
本発明の電気接点材料の他の一つは、ビスマスト２０重
量％と、カドミウム０．１〜５重量％、マンガン０．５
〜５重量％、亜鉛０．５〜５重量％と、残部銀から成る
材料であって、且つ内部酸化されているものである。Another electrical contact material of the present invention includes 20% by weight of bismast, 0.1 to 5% by weight of cadmium, and 0.5% by weight of manganese.
-5% by weight of zinc, 0.5-5% by weight of zinc, and the balance of silver, and is internally oxidized.
本発明の電気接点材料に於いて、ビスマスト２０重量％
と、カドミウム ０．１〜５重量％、マンガン０．５〜
５重量％、亜鉛０．５〜５重量％とした理由は、ビスマ
ス、カドミウムは低温昇華性によって耐溶着性を向上す
るためで、ビスマス１重量％未満、カドミウム０．１重
量％未満ではその効果がなく、ビスマス２０重量％を超
えると合金の融点が下がりすぎて高温での内部酸化が困
難となり、カドミウム５重量％を超えると銀−酸化ビス
マスの耐溶着性を劣化させる。マンガンは耐溶着性を向
上させるためで、０．５重量％未満ではその効果がなく
、５重量％を超えると層状析出となり接触抵抗、温度上
昇を大にする。亜鉛は酸化物が熱的に安定なことにより
耐溶着性を向上させるためで、０．５重量％未満ではそ
の効果がなく、５重量％を超えるとマンガンと同様、層
状析出となり接触抵抗、温度上昇を大にする。以上のこ
とよりビスマスト２０重量％、カドミウム０．１〜５重
量％、マンガン０．５〜５重量％、亜鉛０．５〜５Ｍ量
％の範囲内では、耐溶着特性の充分満足できる電気接点
材料が得られるものである。In the electrical contact material of the present invention, 20% by weight of bismast
, cadmium 0.1~5% by weight, manganese 0.5~
The reason why bismuth and cadmium are set to 5% by weight and 0.5 to 5% by weight of zinc is that bismuth and cadmium improve welding resistance due to their low-temperature sublimation properties, and less than 1% by weight of bismuth and less than 0.1% by weight of cadmium decreases this effect. If cadmium exceeds 20% by weight, the melting point of the alloy will be too low and internal oxidation at high temperatures becomes difficult, and if cadmium exceeds 5% by weight, the welding resistance of silver-bismuth oxide will deteriorate. Manganese is used to improve welding resistance; if it is less than 0.5% by weight, it has no effect, and if it exceeds 5% by weight, layered precipitation occurs, increasing contact resistance and temperature rise. Zinc improves welding resistance due to its thermal stability as an oxide, so if it is less than 0.5% by weight, it has no effect, and if it exceeds 5% by weight, layered precipitation occurs like manganese, which reduces contact resistance and temperature. increase the rise. From the above, within the range of 20% by weight of bismust, 0.1 to 5% by weight of cadmium, 0.5 to 5% by weight of manganese, and 0.5 to 5% by weight of zinc, electrical contact materials with sufficiently satisfactory welding resistance properties can be obtained. is obtained.
さらに本発明の電気接点材料の他の−っに於いて、ビス
マスト２０重量％、カドミウム０．１〜５重量％、マン
ガン０．５〜５重量％、亜鉛０．５〜５重量％以外に鉄
族元素０．０１〜１重量％添加する理由は、これを電気
接点材料に分散させた場合、これにより得られる酸化ビ
スマス及び酸化カドミウムの均一微細な分散によって、
放電による消耗が均一化するため接触抵抗がより安定す
るからであって、０．０１重量％未満では酸化ビスマス
及び酸化カドミウムが均一微細に分散せず、１重量％を
超えるとそれ自体の偏析が増加し、接触抵抗が不安定と
なる。Furthermore, other components of the electrical contact material of the present invention include 20% by weight of bismast, 0.1 to 5% by weight of cadmium, 0.5 to 5% by weight of manganese, and 0.5 to 5% by weight of zinc. The reason why group elements are added in an amount of 0.01 to 1% by weight is that when they are dispersed in electrical contact materials, the resulting uniform and fine dispersion of bismuth oxide and cadmium oxide
This is because the contact resistance becomes more stable because the consumption due to discharge becomes uniform. If it is less than 0.01% by weight, bismuth oxide and cadmium oxide will not be uniformly and finely dispersed, and if it exceeds 1% by weight, they will segregate themselves. contact resistance becomes unstable.
（実施例及び従来例）
下記の表に左欄に示す実施例１，２の成分組成の材料を
熔解し、アトマイズ粉となした後、６００℃、９気圧、
２日間内部酸化し、この酸化アトマイズ粉を圧縮焼結し
、これを押出、引抜加工した後切断してヘッダー加工し
、頭部径５鰭、Ｎ高１．０鶴１脚部径２．５ｎ、脚長２
．５顛の固定接点と頭部径４ｍｍ、頭高Ｌ１ｍｍ、脚部
径２．８＋ｉｍ、脚長１．５＋ａｍ。(Examples and Conventional Examples) After melting the materials having the compositions of Examples 1 and 2 shown in the left column of the table below to form atomized powder, the powder was heated at 600°C, 9 atm,
After internal oxidation for 2 days, this oxidized atomized powder was compressed and sintered, extruded and drawn, then cut and processed into a header.The head diameter was 5 fins, the N height was 1.0, and the crane leg diameter was 2.5 nm. , leg length 2
．． 5-piece fixed contact, head diameter 4mm, head height L1mm, leg diameter 2.8+im, leg length 1.5+am.
頭高球状５Ｒの可動接点を得た。A movable contact with a spherical head height of 5R was obtained.
また下記の表の左欄Ｃ台示す実施例３，４の成分組成の
材料を熔解し、チップ形状となした後、６００℃、９気
圧、２日間内部酸化した後圧縮焼結し、これを押出、引
抜加工した後切断してヘッダー加工し、頭部径５鶴１頭
高１．０ｍ、脚部径２．５鶴。In addition, materials having the compositions of Examples 3 and 4 shown in C in the left column of the table below were melted and formed into chips, internally oxidized at 600°C and 9 atm for 2 days, and then compressed and sintered. After extrusion and drawing, the cranes are cut and processed into headers, with a head diameter of 5 cranes, each head height of 1.0 m, and a leg diameter of 2.5 cranes.
脚長２．５ｍｍの固定接点と頭部径４龍１頭高１．１ｍ
ｍ。Fixed contact with leg length 2.5mm and head diameter 4 dragons 1 head height 1.1m
m.
脚部径２．８ｍ＋脚長１．６＋ｍ、頭部球状５Ｒの可動
接点を得た。A movable contact with a leg diameter of 2.8 m + leg length of 1.6 + m and a spherical head shape of 5R was obtained.
然してこれら実施例１〜４の電気接点材料にて作ったり
ベント型電気接点と、下記の表の左欄に示す従来例の成
分組成の材料を実施例１．２と同じ方法で作った同一寸
法のりヘット型電気接点をヒンジ型リレーに組み込み下
記の試験条件にこて開閉試験を行った処、下記の表の右
欄に示すような結果を得た。However, bent-type electrical contacts made using the electrical contact materials of Examples 1 to 4 and the same dimensions made using the materials of the conventional composition shown in the left column of the table below in the same manner as in Example 1.2. When a glue head type electrical contact was incorporated into a hinge type relay and a trowel opening/closing test was conducted under the following test conditions, the results shown in the right column of the table below were obtained.
試験条件
電 圧 ： ＡＣ１００Ｖ ５０Ｈｚ
電 流 −投入 ４０Ａ、定常１０Ａ
負 荷 ： 抵抗
開閉頻度 ：２０回／分
開閉回数 ： 溶着発生迄
（以下余白）
上記の表で明らかなように実施例１〜４の電気接点材料
で作ったリヘソト型電気接点は、従来例の電気接点材料
で作ったりベット型電気接点に比し、溶着発生までの開
閉回数が多く耐溶着性にすぐれ接触抵抗も同等に低く且
つばらつきが少く安定していることがわかる。Test conditions Voltage: AC 100V 50Hz Current - input 40A, steady 10A Load: Resistance Switching frequency: 20 times/min Switching/closing frequency: Until welding occurs (blank below) As is clear from the table above, Examples 1 to 4 Rehesoto type electrical contacts made with electrical contact materials have a higher number of openings and closings before welding occurs than conventional electrical contact materials or bed type electrical contacts, and have excellent welding resistance, and contact resistance is equally low and variable. It can be seen that the value is small and stable.
（発明の効果）
以上詳記した通り本発明の電気接点材料は従来の銀−ビ
スマスより成る電気接点材料と同等の安定した接触抵抗
を有し、その上耐溶着性については格段に向上しており
、従来の電気接点材料にとって代わることのできる画期
的なものと云える。(Effects of the Invention) As detailed above, the electrical contact material of the present invention has a stable contact resistance equivalent to that of the conventional electrical contact material made of silver-bismuth, and has significantly improved welding resistance. Therefore, it can be said to be an epoch-making product that can replace conventional electrical contact materials.
出願人 田中貴金属工業株式会社Applicant Tanaka Kikinzoku Kogyo Co., Ltd.
Claims (1)
％、マンガン０．５〜５重量％、亜鉛０．５〜５重量％
と、残部銀から成る材料であって、且つ内部酸化されて
いる電気接点材料。 ２）ビスマスト２０重量％、カドミウム０．１〜５重量
％、マンガン０．５〜５重量％、亜鉛０．５〜５重量％
と、鉄族元素０．０１〜１重量％と、残部銀から成る材
料であって、且つ内部酸化されている電気接点材料。[Claims] 1) 20% by weight of bismust, 0.1-5% by weight of cadmium, 0.5-5% by weight of manganese, 0.5-5% by weight of zinc.
and an internally oxidized electrical contact material, the balance being silver. 2) 20% by weight of bismust, 0.1-5% by weight of cadmium, 0.5-5% by weight of manganese, 0.5-5% by weight of zinc
, 0.01 to 1% by weight of an iron group element, and the balance being silver, and is internally oxidized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59104957A JPS60248840A (en) | 1984-05-24 | 1984-05-24 | Electrical contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59104957A JPS60248840A (en) | 1984-05-24 | 1984-05-24 | Electrical contact material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60248840A true JPS60248840A (en) | 1985-12-09 |
Family
ID=14394572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59104957A Pending JPS60248840A (en) | 1984-05-24 | 1984-05-24 | Electrical contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60248840A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS536226A (en) * | 1976-07-07 | 1978-01-20 | Tanaka Precious Metal Ind | Composite electric contact materials |
-
1984
- 1984-05-24 JP JP59104957A patent/JPS60248840A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS536226A (en) * | 1976-07-07 | 1978-01-20 | Tanaka Precious Metal Ind | Composite electric contact materials |
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