JPS5850305B2 - Denkisetsutenzairiyo - Google Patents
DenkisetsutenzairiyoInfo
- Publication number
- JPS5850305B2 JPS5850305B2 JP50077687A JP7768775A JPS5850305B2 JP S5850305 B2 JPS5850305 B2 JP S5850305B2 JP 50077687 A JP50077687 A JP 50077687A JP 7768775 A JP7768775 A JP 7768775A JP S5850305 B2 JPS5850305 B2 JP S5850305B2
- Authority
- JP
- Japan
- Prior art keywords
- silver
- lithium
- bismuth
- calcium
- electrical 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.)
- Expired
Links
Landscapes
- Contacts (AREA)
- Conductive Materials (AREA)
Description
【発明の詳細な説明】
本発明は銀糸の電気接点材料の改良、更に詳しくは銀−
ビスフスーカルシウムーリチウム系合金およびこれに酸
素を含有せしめて耐溶着性、耐消耗性を高めた中電流用
として好適な電気接点材料に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in electrical contact materials made of silver thread, and more specifically, to improvements in silver thread electrical contact materials.
The present invention relates to an electrical contact material suitable for medium current use, which is made of a bisfusucalcium-lithium alloy and contains oxygen therein to improve welding resistance and wear resistance.
一般に銀およびその合金は接触抵抗が低く耐アーク性に
優れているので、古くから接点材料として用いられてい
る。In general, silver and its alloys have low contact resistance and excellent arc resistance, so they have been used as contact materials for a long time.
なかでも開閉電流が１〜１５０Ａ程度のいわゆる中電流
領域に用いられる接点には銀−ニッケル合金あるいは銀
−酸化カドミウム合金などがあり、特に銀−酸化カドミ
ウム合金は接触抵抗が低く耐消耗性、耐溶着性に優れた
良好な接点材料として知られている。Among these, the contacts used in the so-called medium current range, where the switching current is about 1 to 150 A, include silver-nickel alloys and silver-cadmium oxide alloys, and silver-cadmium oxide alloys have low contact resistance, wear resistance, and durability. Known as a good contact material with excellent weldability.
・しかしながら最近ではカドミウムの人体への影響など
が問題となり、そのためこれに代わる接点材料の開発が
強く要望されている。-However, recently, the effects of cadmium on the human body have become a problem, and there is therefore a strong demand for the development of alternative contact materials.
本発明はかへる要望に答えてなされたもので、第１の発
明はビスマス０．１〜０．３重量饅、リチウム、カルシ
ウムのいずれか１種又は２種を合計で０．０５〜３重量
饅を含み、残部が銀よりなることを特徴とする電気接点
材料に係るものである。The present invention has been made in response to the above-mentioned needs, and the first invention is based on a total of 0.1 to 0.3 weight of bismuth, lithium, and calcium. This relates to an electrical contact material characterized in that it contains a heavy weight and the remainder is made of silver.
ここでビスマスは耐溶着性を向上する効果を有するが０
．１多未満ではその効果かうすく、３饅をこれると飽和
する。Here, bismuth has the effect of improving welding resistance, but 0
．． If the amount is less than 1, the effect will be weak, but if you eat 3, the effect will be saturated.
またリチウムおよびカルシウムは銀−ビスマスよりなる
合金の耐消耗性を向上させる働きがある。Lithium and calcium also have the function of improving the wear resistance of the silver-bismuth alloy.
尚リチウム、カルシウムは０．０５％以上含まれること
により効果が顕著であるが３多をこえるとその効果が飽
和する一方、リチウムは高価であるため合金の価格を高
めることになり不利であることから３％以下が好ましい
。The effect is significant when lithium and calcium are contained in an amount of 0.05% or more, but the effect becomes saturated when the content exceeds 0.05%, while lithium is expensive, which is disadvantageous as it increases the price of the alloy. 3% or less is preferable.
本発明の第２の発明はビスマス０．１〜３重量φ、リチ
ウム、カルシウムのいずれか１種又は２種を合計で０．
０５〜３重量φ、および酸素４重量φ以下を含み、残部
が銀よりなることを特徴とする電気接点材料に係るもの
である。The second aspect of the present invention is a total of 0.1 to 3 weight φ of bismuth, and one or two of lithium and calcium.
05 to 3 weight φ, and oxygen 4 weight φ or less, the balance being silver.
こ＼でビスマス、リチウム、カルシウムおよび酸素は互
に相乗的な働きにより銀の耐消耗性および耐溶着性を向
上せしめるが、酸素４咎以下の添加はビスマス、リチラ
ム、カルシウムの一部あるいは全部を酸化物の形で鎖中
に分散させる働きを有し、かくて特に優れた接点特性が
得られることになる。Bismuth, lithium, calcium, and oxygen work synergistically with each other to improve the abrasion resistance and welding resistance of silver, but adding less than 4 ml of oxygen may destroy some or all of bismuth, lithium, and calcium. It has the effect of dispersing it in the chain in the form of an oxide, thus resulting in particularly good contact properties.
以下に本発明の効果を一層間らかにするためこれを実施
例によって具体的に説明する。EXAMPLES Below, in order to further clarify the effects of the present invention, the present invention will be specifically explained using examples.
第１表に示す従来の電気接点材料の合金と本発明の電気
接点材料の合金を夫々高周波真空溶解炉で溶解鋳造し５
０朋Ｘ ５０ｍｙｎＸ １００ｍｍのインゴットを作成
した。The conventional electrical contact material alloy shown in Table 1 and the electrical contact material alloy of the present invention were melted and cast in a high frequency vacuum melting furnace.
An ingot of 0mm x 50mm x 100mm was prepared.
このインゴットを通常の不活性雰囲気中における焼鈍と
冷間圧延の繰返しにより厚さ２．０ｍｍの板とした後、
２分割し、一方（１−１〜１２−１）をアルゴン中で他
方（１−２〜１２−２）を酸素中で夫々６００〜７５０
℃の温度で１０時間加熱した。After making this ingot into a plate with a thickness of 2.0 mm by repeating annealing and cold rolling in a normal inert atmosphere,
Divide into two, one (1-1 to 12-1) in argon and the other (1-2 to 12-2) in oxygen at 600 to 750, respectively.
The mixture was heated for 10 hours at a temperature of .degree.
酸素中で加熱した本発明合金の試料（４−２〜１２−２
）は添加元素の殆んどが、酸化物となりいわゆる内部酸
化された粒子が鎖中に分散していることが材料断面の観
察から確認された。Samples of the alloy of the present invention heated in oxygen (4-2 to 12-2
), it was confirmed from observation of the cross section of the material that most of the added elements became oxides and so-called internally oxidized particles were dispersed in the chains.
これらの板材から金型を用いて厚さ２０ｍｍ、直径３．
０醋の円板を打抜き、該円板状接点を交流２００■、３
０Ａの通電回路で６０回／分のサイクルにて５０，００
０回開閉し、接点寿命試験を行い、第２表の結果を得た
。Using a mold, these plates are made into 20mm thick and 3mm diameter pieces.
Punch out a disc of 0.0 mm, and connect the disc-shaped contacts to an AC of 200 cm, 3
50,00 at a cycle of 60 times/minute in a 0A current circuit
The contact life test was performed by opening and closing 0 times, and the results shown in Table 2 were obtained.
また接触抵抗はいずれも０．３〜０．６ｍΩの範囲内に
あり、良好であった。In addition, the contact resistances were all within the range of 0.3 to 0.6 mΩ, which was good.
上記実施例より明らかなように本発明電気接点材の合金
は従来の銀−酸化カドミウム合金のように人体の健康に
有害なカドミウムを含有せずしかも従来の銀あるいは銀
−ニッケル合金に比較して接点性能が著しく向上してい
るばかりでなく、銀酸化カドミウム合金とそん色のない
性能を示し、その上合金の製造も従来法と伺ら変るとこ
ろがなく、容易に製造できる等の利点を有するものであ
る。As is clear from the above examples, the alloy of the electrical contact material of the present invention does not contain cadmium, which is harmful to human health, unlike conventional silver-cadmium oxide alloys, and is more effective than conventional silver or silver-nickel alloys. Not only has the contact performance been significantly improved, but the performance is comparable to that of silver cadmium oxide alloys.Furthermore, the production of the alloy is no different from conventional methods, and it has the advantage of being easy to produce. It is.
Claims (1)
のいずれか１種または２種を合計で０．０５〜３重量饅
含み残部が銀よりなることを特徴とする電気接点材料。 ２ ビスマス０．１〜３重量饅、リチウム、カルシウム
のうちいずれか１種または２種を合計で０．０５〜３重
量多、および酸素４重量φ以下を含み残部が銀よりなる
ことを特徴とする電気接点材料。[Scope of Claims] 1. An electrical contact characterized by containing a total of 0.05 to 3 parts by weight of any one or two of bismuth, 0.1 to 3 parts of bismuth, lithium, and calcium, with the remainder being silver. material. 2. Contains a total of 0.05 to 3 weight of any one or two of bismuth, lithium, and calcium, and 4 weight of oxygen or less, and the balance is silver. electrical contact materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50077687A JPS5850305B2 (en) | 1975-06-24 | 1975-06-24 | Denkisetsutenzairiyo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50077687A JPS5850305B2 (en) | 1975-06-24 | 1975-06-24 | Denkisetsutenzairiyo |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS521496A JPS521496A (en) | 1977-01-07 |
| JPS5850305B2 true JPS5850305B2 (en) | 1983-11-09 |
Family
ID=13640795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50077687A Expired JPS5850305B2 (en) | 1975-06-24 | 1975-06-24 | Denkisetsutenzairiyo |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850305B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5984030A (en) * | 1982-11-05 | 1984-05-15 | Matsushita Electric Ind Co Ltd | High frequency wave heating device |
| JPS619540A (en) * | 1984-06-25 | 1986-01-17 | Matsushita Electric Works Ltd | Electrical contact material |
| JPH033999Y2 (en) * | 1987-08-12 | 1991-01-31 | ||
| JPH01246333A (en) * | 1988-03-29 | 1989-10-02 | Mitsubishi Metal Corp | Au alloy with unspreadability for use in sliding contact for compact precision motor commutator |
-
1975
- 1975-06-24 JP JP50077687A patent/JPS5850305B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS521496A (en) | 1977-01-07 |
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