JPS6033326A - Electric contact material - Google Patents
Electric contact materialInfo
- Publication number
- JPS6033326A JPS6033326A JP58140170A JP14017083A JPS6033326A JP S6033326 A JPS6033326 A JP S6033326A JP 58140170 A JP58140170 A JP 58140170A JP 14017083 A JP14017083 A JP 14017083A JP S6033326 A JPS6033326 A JP S6033326A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- contact material
- silver alloy
- resistance
- electric 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
- 239000000463 material Substances 0.000 title claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 21
- 229910001316 Ag alloy Inorganic materials 0.000 claims abstract description 17
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 7
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 13
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 238000005266 casting Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 5
- 229910001887 tin oxide Inorganic materials 0.000 description 5
- 229910001128 Sn alloy Inorganic materials 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- QCEUXSAXTBNJGO-UHFFFAOYSA-N [Ag].[Sn] Chemical compound [Ag].[Sn] QCEUXSAXTBNJGO-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 241000233805 Phoenix Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- -1 gold peroxide Chemical class 0.000 description 1
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Conductive Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔背景技術〕
従来、溶接した銀合金を釣造後内部酸化して製造した電
気接点材料は概して耐溶着性、耐消耗性に優れている反
面、接触抵抗が不安定であり、又加工性に乏しい。[Detailed Description of the Invention] [Background Art] Conventionally, electrical contact materials manufactured by internally oxidizing a welded silver alloy after casting generally have excellent welding resistance and abrasion resistance, but have unstable contact resistance. Also, it has poor workability.
一方たとえば銀とニッケルを焼結して得た電気接点材料
は、耐消耗性、加工性に優れるとともに接触抵抗も小さ
い範囲で安定した性能を示す反面耐溶着性に劣る。On the other hand, an electrical contact material obtained by sintering silver and nickel, for example, has excellent wear resistance and processability, and exhibits stable performance in a small contact resistance range, but is inferior in welding resistance.
これらの欠点を除去するために、内部酸化と焼結を工程
に含めた電気接点材料の製法が案出されこの法で得られ
た電気接点材料は１〜ＢＯＡの中電流用として応用され
ている。しかしこの様に焼結前に前酸化を施した製法で
得たのは耐溶着性、これと反比例の傾向を示す接触抵抗
において十分な性能を示すものではない。すなわち耐溶
着性の向上をはかるために内部酸化される銀合金中の溶
質の濃度を高めると酸化物の増量に伴なって接触抵抗が
降下するとともに硬度増大に起因する加工性が悪くなる
。逆に溶質の濃度を減らすと耐溶着性が下る反面接触抵
抗と加工性は向上する。In order to eliminate these drawbacks, a manufacturing method for electrical contact materials that includes internal oxidation and sintering was devised, and the electrical contact materials obtained by this method are used for medium current applications of 1 to BOA. . However, the products obtained by this method of pre-oxidizing before sintering do not exhibit sufficient performance in terms of welding resistance and contact resistance, which tends to be inversely proportional to this. That is, when the concentration of solute in the internally oxidized silver alloy is increased in order to improve the welding resistance, the contact resistance decreases as the amount of oxide increases, and the workability deteriorates due to increased hardness. Conversely, when the solute concentration is reduced, the adhesion resistance decreases, but the contact resistance and processability improve.
この発明は以上の事実に鑑みてなされたもので相矛旨す
る関係にある耐溶着性と接触抵抗の性能について改善を
加えた電気接点材料の製法を提供するものである。This invention has been made in view of the above facts, and provides a method for producing an electrical contact material that improves the performance of welding resistance and contact resistance, which are contradictory to each other.
この発明は金属酸化物の濃度の異なる数種の内部酸化型
銀合金の粒子を併用し、この粒子を混合成形、焼結する
ことを特徴とする電気接点材料の製法を提供するもので
ある。The present invention provides a method for producing an electrical contact material, which is characterized in that particles of several kinds of internally oxidized silver alloys having different concentrations of metal oxides are used together, and the particles are mixed, molded, and sintered.
以下この発明を詳説する。This invention will be explained in detail below.
内部酸化によって酸化物が生成する銀合金としては特に
限定がなく一例を示すと銀−スズ合金が用いられる。こ
の合金を粉砕し粒子の性状とする。There are no particular limitations on the silver alloy in which oxides are produced by internal oxidation, and a silver-tin alloy may be used as an example. This alloy is ground into particles.
銀−スズ合金に限ってその組成を示すとスズ鳳が８〜１
０＠重量％含有したのが接点として適当である。この銀
−スズ合金から成る粒子を内部酸化し、酸化スズを含有
する粒子とし、これをさらに成形、焼結し、熱間押出し
又は圧延等によって線又は板状に賦形したとえばリベッ
ト接点あるいはカマボコ接点として供する。Regarding the composition of silver-tin alloys, tin phoenix is 8 to 1
A content of 0@wt% is suitable for a contact. The particles made of this silver-tin alloy are internally oxidized to produce particles containing tin oxide, which are further molded, sintered, and shaped into a wire or plate shape by hot extrusion or rolling. Serve as a contact point.
銀−スズ合金を用いた内部酸化型の接点に限ってスズの
含有量に応する接点性能を説明するとスズの含有量が８
〜１２重量％の範囲で増大するにつれ接触抵抗は２ｍΩ
〜４．５ｍΩに増加する傾向を示し、これとは反対に耐
溶着性について５万回の開■ｊ回数における平均溶着回
数で表わすと２回〜０．９回に減少する。To explain the contact performance depending on the tin content for internal oxidation type contacts using a silver-tin alloy, the tin content is 8.
The contact resistance decreases to 2 mΩ as the weight increases in the range of ~12% by weight.
On the contrary, when the welding resistance is expressed as the average number of weldings over 50,000 openings, it decreases to 2 to 0.9 times.
これは鎖中に生成した酸化スズの増加につれ表面に存在
する酸化スズが増加し、接触抵抗が増加する反面、酸化
スズの増加につれてスズの酸化による体積膨張によって
残留応力が増加し、硬度が増大すること、及びアーク発
生に伴なう溶融域が酸化スズによって減少することに起
用して耐溶着性が改善されるものと解される。This is because as the amount of tin oxide generated in the chain increases, the amount of tin oxide present on the surface increases, and the contact resistance increases.However, as the amount of tin oxide increases, the residual stress increases due to volume expansion due to oxidation of tin, resulting in an increase in hardness. It is understood that the welding resistance is improved due to the fact that tin oxide reduces the melting area caused by arc generation.
ところが、鎖中に含まれた金属酸化物の含有量の異なる
数種の内部酸化型粒子を併用してこれを成形、焼結して
得た電気接点拐料は接触抵抗が低下し耐溶着性が増大す
ることを見い出した。すなわち金属酸化物の濃度がたと
えは３重量％と９重量％の銀合金から成る内部酸化型の
粒子を同一の割合で混合し、これを成形、焼結そして加
工を飾して接点材料としたのと金属酸化物の濃度が６重
量％の粒子のみを同一の条件で製造した接点材料とした
のとでは接触抵抗、耐溶着性において異なる。すなわち
表１に示す如く金槁酸化物の濃度の異なる数種の銀合金
粒子を併用すると単一の銀金 −金粒子を原料として成
るのと比べて接触抵抗並びに耐溶着性共に優れるのであ
る。この場合、供する機器に適する接点材料は酸化物濃
度の大きい銀合金粒子と小さい銀合金粒子の混合比を選
択調整して得ることができる。However, electrical contact materials obtained by molding and sintering several types of internally oxidized particles with different metal oxide contents in the chains have lower contact resistance and are less resistant to welding. was found to increase. In other words, internally oxidized particles made of a silver alloy with a metal oxide concentration of 3% by weight and 9% by weight, for example, are mixed in equal proportions, and this is molded, sintered, and processed to form a contact material. Contact resistance and welding resistance are different between this and a contact material manufactured under the same conditions using only particles with a metal oxide concentration of 6% by weight. That is, as shown in Table 1, when several types of silver alloy particles having different concentrations of gold peroxide are used in combination, both contact resistance and welding resistance are superior to when using a single silver-gold particle as a raw material. In this case, a contact material suitable for the device to be used can be obtained by selectively adjusting the mixing ratio of silver alloy particles with a high oxide concentration and silver alloy particles with a small oxide concentration.
なお、試験条件はＡ、Ｃ，ｌ ＱＱＶ４ＱＡ、Ｒ負荷５
万回開閉で解離力８４０ ｔ、接触力２００Ｖの条件で
ＡＳＴＭ試験法に基づいて行った。The test conditions are A, C, l QQV4QA, R load 5
The test was conducted based on the ASTM test method under the conditions of a dissociation force of 840 t and a contact force of 200 V after opening and closing 10,000 times.
次に金属単体を含む銀合金から内部酸化を施した内部酸
化型銀合金の粒子を製造する方法について頒れると、上
部と下部とで水冷等の密度の異なる鋳型に金属単体を含
有する銀合金を溶湯の形態で注ぎ、この溶湯を冷却する
。この時、金属単体は冷却の遅いゾーンすなわち水冷管
の密度の小さいゾーンにはきされ、この鋳型で得られた
インゴットには上部と下部に金属単体の濃度の差が生ず
る。このインゴットを機械的に粉砕し１０数μから数１
００Ｐの粒子とし、これを内部酸化する。Next, a method for producing internally oxidized silver alloy particles from a silver alloy containing an elemental metal is distributed, and a silver alloy containing an elemental metal is placed in a mold with different densities such as water cooling for the upper and lower parts. is poured in the form of molten metal, and this molten metal is cooled. At this time, the metal element is drawn into the slow cooling zone, that is, the low-density zone of the water-cooled pipe, and the ingot obtained with this mold has a difference in the concentration of the metal element between the upper and lower parts. This ingot is mechanically pulverized to a size ranging from several tens of microns to several 1 microns.
00P particles are internally oxidized.
そしてこの内部酸化型の粒子を混合、成形、焼結の工程
で処理する。These internally oxidized particles are then processed through mixing, shaping, and sintering steps.
この発明は以上の説明の如く、金属酸化物の含有が均一
の内部酸化型粒子を単一系で採用したのと比べて相反す
る接触抵抗と耐溶着性共に優れた性能を示すのである。As explained above, this invention exhibits superior performance in both contact resistance and welding resistance, which are contradictory, compared to a single system employing internally oxidized particles containing uniform metal oxides.
特許出願人
松下電工株式会社
代理人弁理士 竹 元 敏 丸
（ほか２名）
手続補正書
口訃０５８年特許願第 １４０１７０号２、発明の名称
電気接点材料
３、補正をする者
事件との関係 特許出願人
住 所 大阪府門真市大字門真１０４８番地名 称（５
８３）松下電工株式会社
代表者 小 林 郁
４、代理人
住 所 大阪府門真市大字門真１０４８番地補正の内容
（１、発明の名称を次の通り訂正する。Patent Applicant Matsushita Electric Works Co., Ltd. Representative Patent Attorney Toshimaru Takemoto (and 2 others) Procedural Amendment Statement No. 058 Patent Application No. 140170 2 Name of the invention Electrical contact material 3 Relationship with the amended person case Patent applicant address 1048 Kadoma, Kadoma City, Osaka Name (5
83) Matsushita Electric Works Co., Ltd. Representative Iku Kobayashi 4, Agent address: 1048 Kadoma, Kadoma City, Osaka Prefecture Contents of the amendment (1. The name of the invention is corrected as follows.
「電気接点材料の製法」
（２）発明の詳細な説明の欄で明細書１頁１０行の「溶
接した銀合金」を１溶解した銀合金」に訂正する。"Method for manufacturing electrical contact materials" (2) In the detailed description of the invention, "welded silver alloy" on page 1, line 10 of the specification is corrected to "1 molten silver alloy."
以上
手続ネ市正書彷力
昭和５９年 ４月 ４日
特許庁長官 殿
１、事件の表示
２、発明の名称
電気接点材料の製法
３、補正をする者
事件との関係 特許出願人
住 所 大阪府門真市大字門真１０４８番地名 称（５
８３）松下電工株式会社
代表者 小 林 郁
４、代理人
住 所 大阪府門真市大字門真１０４８番地６、補正の
対象The above proceedings were filed by the Commissioner of the Japan Patent Office on April 4, 1980. 1. Indication of the case 2. Name of the invention Process for producing electrical contact materials 3. Person making the amendment Relationship with the case Patent applicant address Osaka 1048 Kadoma, Fukadoma City Name (5)
83) Matsushita Electric Works Co., Ltd. Representative: Iku Kobayashi 4, Agent address: 1048-6 Kadoma, Kadoma City, Osaka Prefecture, Subject to amendment
Claims (1)
金の粒子を併用し、この粒子を混合、成形焼結すること
を特徴とする電気接点材料の製法。(1) A method for producing an electrical contact material characterized by using several types of internally oxidized silver alloy particles having different metal oxide concentrations, mixing the particles, shaping and sintering the particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58140170A JPS6033326A (en) | 1983-07-31 | 1983-07-31 | Electric contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58140170A JPS6033326A (en) | 1983-07-31 | 1983-07-31 | Electric contact material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6033326A true JPS6033326A (en) | 1985-02-20 |
Family
ID=15262509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58140170A Pending JPS6033326A (en) | 1983-07-31 | 1983-07-31 | Electric contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6033326A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7998233B2 (en) | 2007-11-26 | 2011-08-16 | Denso Corporation | Air cleaner unit for vehicle and fan shroud having the same |
-
1983
- 1983-07-31 JP JP58140170A patent/JPS6033326A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7998233B2 (en) | 2007-11-26 | 2011-08-16 | Denso Corporation | Air cleaner unit for vehicle and fan shroud having the same |
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