JPH02117041A - Electrode material for vacuum interrupter - Google Patents
Electrode material for vacuum interrupterInfo
- Publication number
- JPH02117041A JPH02117041A JP26935588A JP26935588A JPH02117041A JP H02117041 A JPH02117041 A JP H02117041A JP 26935588 A JP26935588 A JP 26935588A JP 26935588 A JP26935588 A JP 26935588A JP H02117041 A JPH02117041 A JP H02117041A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- ranging
- current
- molybdenum
- cobalt
- 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
- 239000007772 electrode material Substances 0.000 title claims description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000010949 copper Substances 0.000 claims abstract description 18
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 16
- 239000010941 cobalt Substances 0.000 claims abstract description 16
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 16
- 239000011733 molybdenum Substances 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 15
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims description 13
- 229910003470 tongbaite Inorganic materials 0.000 claims description 13
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 3
- XHFVDZNDZCNTLT-UHFFFAOYSA-H chromium(3+);tricarbonate Chemical compound [Cr+3].[Cr+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O XHFVDZNDZCNTLT-UHFFFAOYSA-H 0.000 abstract 4
- 230000004927 fusion Effects 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 238000005520 cutting process Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 229910001152 Bi alloy Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- QAAXRTPGRLVPFH-UHFFFAOYSA-N [Bi].[Cu] Chemical compound [Bi].[Cu] QAAXRTPGRLVPFH-UHFFFAOYSA-N 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 3
- ITZSSQVGDYUHQM-UHFFFAOYSA-N [Ag].[W] Chemical compound [Ag].[W] ITZSSQVGDYUHQM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- -1 C2: 30% by weight Substances 0.000 description 1
- 241001072332 Monia Species 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
【発明の詳細な説明】
人、 産業上の利用公費
本発明は、電流しゃ断性能や電流さい断値等の特性を向
上させた安価な溶浸形の複合金属からなる真空インタラ
プタのＴｉ極材料に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Ti electrode material for a vacuum interrupter made of an inexpensive infiltrated composite metal with improved characteristics such as current cutting performance and current cutting value. .
Ｂ 発明の概要
銅と炭化クロムとニッケルとコバルトと鉄とモリブデン
とビスマスとからなる真空インタラプタの電極材料であ
り、耐溶着性や電流しゃ断性能及び電流さい断値等の特
性を向上させたものである。B. Summary of the Invention This is an electrode material for a vacuum interrupter made of copper, chromium carbide, nickel, cobalt, iron, molybdenum, and bismuth, and has improved properties such as welding resistance, current interrupting performance, and current interrupting value. be.
Ｃ従来の技術
一般に、真空インタラプタの電極材料として要求される
主な性能としては、
（１）耐溶着性が良いこと
（２）電流しゃ断性能が高いこと
（３）電流さい断値が低いこと
等を挙げることができる。C. Conventional technology In general, the main performances required for electrode materials for vacuum interrupters are (1) good welding resistance, (2) high current cutting performance, (3) low current cutting value, etc. can be mentioned.
しかし、電極材料の電流しゃ断性能を高くすることと電
流さい断値を低くすることとは、互いに矛盾する物理的
特性に起因するため、単一の電極材料で上述した全ての
特性を満たすことは難しく、真空インタラプタの仕様に
最も適合１７な電極材料を選択しているのが現状である
。However, since increasing the current cutting performance and lowering the current cutting value of an electrode material are due to mutually contradictory physical properties, it is impossible to satisfy all of the above characteristics with a single electrode material. Currently, it is difficult to select the electrode material that best meets the specifications of the vacuum interrupter.
例えば、特公昭４１−１２１３１号公報等に開示された
銅ビスマス合金は（鋼（Ｃｕ）に蒸気圧の高い低融点の
ビスマス（Ｂ ｉ ）を０．５重量％添加したものであ
り、耐溶着性や電流しゃ断性能が良好であること（よ周
知の通りである。又、特公昭５４−３６１２Ｉ号公報等
に開示されたタングステン鋼焼結金属は、蒸気圧の低い
高融点のタングステン（Ｗ）に銅を２０重１％添加した
ものであり、電流さい断値が低い利点を有する。この電
流さい断値が特に低い電極材料としては、実開昭５５−
１２１４２９号公報等に開示された炭化タングステン銀
焼結金属、つまり炭化タングステン（ＷＣ）に！！ｉ（
Ａｇ）を３０重量％添加したもの等がある。For example, the copper-bismuth alloy disclosed in Japanese Patent Publication No. 41-12131 is made by adding 0.5% by weight of bismuth (B i ), which has a high vapor pressure and a low melting point, to steel (Cu), and has excellent welding resistance. The tungsten steel sintered metal disclosed in Japanese Patent Publication No. 54-3612I etc. is made of tungsten (W), which has a low vapor pressure and a high melting point. It has the advantage of having a low current cut-off value.As an electrode material with a particularly low current cut-off value, Utility Model Application No. 55-
To the tungsten carbide silver sintered metal disclosed in Publication No. 121429 etc., that is, tungsten carbide (WC)! ! i(
There are also those containing 30% by weight of Ag).
Ｄ 発明が解決しようとする課題
鋼ビスマス合金は電流しゃ断性能が良好である反面、電
流さい断値が例えばＩＯＡと高く、電流しゃ断時にさい
断サージを発生することがある。このため、遅れ小電流
を良好にしゃ断することが困難であり、負荷側の電気機
器の絶縁破壊を引き起こす虞がある。D. Problems to be Solved by the Invention Although steel-bismuth alloys have good current cutting performance, their current cutting values are high, for example, IOA, and cutting surges may occur when the current is cut off. For this reason, it is difficult to cut off the delayed small current in a good manner, which may cause dielectric breakdown of the electrical equipment on the load side.
又、タングステン鋼焼結金属や炭化タングステン銀焼結
金属は電流さい断値が低い反面、電流しゃ断性能が悪く
、短絡電流の如き大電流をしゃ断することができない。Furthermore, although tungsten steel sintered metal and tungsten silver carbide sintered metal have a low current cutoff value, they have poor current cutoff performance and cannot cut off large currents such as short circuit current.
更に、炭化タングステン銀焼結金属では銀を比較的多量
に含んでいることから、電極材料としては高価なもので
あり、真空インタラプタの製造単価を下げる際の障害と
なる。Furthermore, since tungsten silver carbide sintered metal contains a relatively large amount of silver, it is expensive as an electrode material, which becomes an obstacle in reducing the manufacturing cost of vacuum interrupters.
Ｅ、 課題を解決するための手段
本発明による真空インタラプタの電極材料は、耐溶着性
や電流しゃ断性能及び電流さい断値等の特性を向上させ
るため、２０から７０重量％の範囲の銅と、５から７５
重量％の範囲の炭化クロムと、０．１から１０重量％の
範囲のニッケルと、０．１から１０重量％の範囲のコバ
ルトと、０．１から１０重量％の範囲の鉄と、２から７
５重量％の範囲のモリブデンと、１から２０重量％の範
囲のビスマスとからなるものである。E. Means for Solving the Problems The electrode material of the vacuum interrupter according to the present invention contains copper in a range of 20 to 70% by weight in order to improve properties such as welding resistance, current interrupting performance, and current interrupting value. 5 to 75
chromium carbide in the range of 0.1 to 10% by weight, nickel in the range of 0.1 to 10% by weight, cobalt in the range of 0.1 to 10% by weight, iron in the range of 0.1 to 10% by weight; 7
It consists of molybdenum in the range of 5% by weight and bismuth in the range of 1 to 20% by weight.
この場合、炭化クロム及びニッケル及びコバルト及び鉄
及びモリブデンの各粉末を均一に混合し、これをニッケ
ル（及び炭化クロム及びコバルト及び鉄及びモリブデン
）の融点す下の温度で加熱して多孔質の焼結体を得、更
にこの焼結体の空隙部分に鋼及びビスマスを溶浸させて
本発明の電極材料を得ろ。なお、これら焼結や溶浸工程
は、非酸化性雰囲気にて脱ガスしつつ行うことが望まし
い。In this case, chromium carbide, nickel, cobalt, iron, and molybdenum powders are uniformly mixed and heated at a temperature below the melting point of nickel (and chromium carbide, cobalt, iron, and molybdenum) to form a porous sintered material. Obtain a compact, and further infiltrate steel and bismuth into the voids of this sintered compact to obtain the electrode material of the present invention. Note that these sintering and infiltration steps are desirably performed in a non-oxidizing atmosphere while degassing.
ここで、銅が２０重量％未満の場合には、導電率が低下
して発熱量が多（なり、逆に銅が７０重量％を越えろと
、耐溶着性の低下や電流さい断値の増大をもたらす。炭
化クロムが５重量％未満の場合やモリブデンが２重量％
未満の場合或いはビスマスが１重量％未満の場合には、
電流さい断値がそれぞれ増大することとなる。更に、炭
化クロムが７５重量％を越えたり、モリブデンが７５重
量％を越える場合には、電流しゃ断性能がそれぞれ低下
してしまう。又、ニッケルやコバルトや鉄がそれぞれ１
０重重量を越える場合には、それぞれ銅との反応が進ん
で導電率の低下をもたらす。逆に、ニッケルやコバルト
や鉄がそれぞれ０．１重量％未満の場合には、炭化クロ
ムの影響に基づく硬化現象の抑制効果が現れず、切削加
工性が悪化する。一方、ビスマスが２０重型部を越える
と電極及び真空インタラプタとしての耐久性が急激に低
下する。If the copper content is less than 20% by weight, the conductivity will decrease and the amount of heat generated will increase (on the contrary, if the copper content exceeds 70% by weight, the welding resistance will decrease and the current cutoff value will increase). When chromium carbide is less than 5% by weight and molybdenum is 2% by weight.
or if bismuth is less than 1% by weight,
The current cutoff value will increase respectively. Furthermore, if the content of chromium carbide exceeds 75% by weight or the content of molybdenum exceeds 75% by weight, the current interrupting performance will deteriorate. Also, nickel, cobalt, and iron each have 1
If the weight exceeds 0 weight, the reaction with copper progresses, resulting in a decrease in electrical conductivity. On the other hand, if each of nickel, cobalt, and iron is less than 0.1% by weight, the effect of suppressing the hardening phenomenon due to the influence of chromium carbide is not exhibited, and the machinability deteriorates. On the other hand, if the content of bismuth exceeds 20 parts, the durability as an electrode and a vacuum interrupter decreases rapidly.
Ｆ 作 用
銅と炭化クロムとニッケルとコバルトと鉄とモリブデン
とビスマスとの最適な組成を見い出したので、全体とし
て耐溶着性や絶縁耐力及び電流しゃ断性能及び電流さい
断値等の真空インタラプタに要求される特性を向上させ
た電極材料が得られる。F Effect We have found the optimal composition of copper, chromium carbide, nickel, cobalt, iron, molybdenum, and bismuth, so that we can meet the overall requirements for vacuum interrupters such as welding resistance, dielectric strength, current interrupting performance, and current interrupting value. An electrode material with improved properties can be obtained.
Ｇ実施例
真空インタラプタは、その概略構造の一例を表す第２図
に示すようなものであり、相互に一直線状をなす一対の
り−ド棒１１，１２の対向端面には、それぞれ電極１３
．１４が一体的に設けである。これら電極１３，１４を
囲む筒状のシールド１５の外周中央部は、このシールド
１５を囲む一対の絶縁筒１６゜１７の間に挾まれた状態
で保持されている。Embodiment G The vacuum interrupter is as shown in FIG. 2, which shows an example of its schematic structure, and has electrodes 13 on opposing end surfaces of a pair of mutually straight line rods 11 and 12.
．． 14 is integrally provided. A central portion of the outer periphery of a cylindrical shield 15 surrounding these electrodes 13 and 14 is held between a pair of insulating cylinders 16 and 17 surrounding this shield 15.
一方の前記リード棒１１は一方の絶縁筒１６の一端に接
合された金属端板１８を気密に貫通した状態で、この金
属端板１８に一体的に固定されている。図示しない駆動
装置に連結される他方のリード棒１２は、他方の絶縁筒
１７の他端に気密に接合された他方の金属端板１９にベ
ローズ２０を介して連結され、駆動装置の作動に伴って
電極１３，１４の対向方向に往復動可能に可動側の電極
１４が固定側の電極１３に対して開閉動作するようにな
っている。One of the lead rods 11 is integrally fixed to the metal end plate 18 joined to one end of the insulating tube 16 while airtightly passing through the metal end plate 18 . The other lead rod 12, which is connected to a drive device (not shown), is connected via a bellows 20 to the other metal end plate 19, which is hermetically joined to the other end of the other insulating tube 17. The movable electrode 14 is configured to open and close with respect to the fixed electrode 13 so that the electrodes 13 and 14 can reciprocate in opposing directions.
前記電極１３．１４は、２０から７０重量％の範囲の銅
（Ｃｕ）と、５から７５重量％の範囲の炭化クロム（例
えばＣｒ５Ｃ２）と、０．１から１０重量％の範囲のニ
ッケル（Ｎｉ）と、０．１から１０重量％の範囲のコバ
ルト（Ｃｏ）と、０．１から１０重量％の範囲の鉄（Ｆ
ｅ）と、２から７５重量％の範囲のモリブデン（Ｍｏ）
と、１から１８重量％の範囲のビスマス（Ｂｉ）とから
なる複合金属で構成されろ。The electrode 13.14 comprises copper (Cu) in the range of 20 to 70% by weight, chromium carbide (e.g. Cr5C2) in the range of 5 to 75% by weight, and nickel (Ni) in the range of 0.1 to 10% by weight. ), cobalt (Co) in the range of 0.1 to 10% by weight, and iron (F) in the range of 0.1 to 10% by weight.
e) and molybdenum (Mo) in the range of 2 to 75% by weight.
and bismuth (Bi) in a range of 1 to 18% by weight.
この電極材料の製造法の一例を息下に記すと、まず−１
００メツシユの粒径の炭化クロム及びニッケル及びコバ
ルト及び鉄及びモリブデンの粉末を機械的に混合し、こ
の混合粉末をアルミナセラミックス製の容器に所定量装
入すると共に該混合粉末上に銅ビスマス合金の塊を載置
した状態で容器に蓋を被せ、これらを真空炉内にて脱ガ
スしつつ加熱処理し、まず炭化クロム粒子及びニッケル
粒子及びコバルト粒子及び鉄粒子及びモリブデン粒子を
相互に拡散結合させ、多孔質の溶浸母材を得ろ。しかる
のち、この溶浸母材の空隙部分に銅及びビスマスを溶浸
させるが、この際、容器内はビスマス蒸気を多量に含ん
ｔ！雰囲気となる。そして、得られる電極材料を容器か
ら出して所定の寸法形状に８！域加工する。An example of the manufacturing method of this electrode material is as follows: -1
Powders of chromium carbide, nickel, cobalt, iron, and molybdenum having a particle size of 0.00 mesh are mechanically mixed, a predetermined amount of this mixed powder is charged into an alumina ceramic container, and a copper-bismuth alloy is placed on top of the mixed powder. A lid is placed on the container with the lumps placed thereon, and these are heated in a vacuum furnace while being degassed. First, chromium carbide particles, nickel particles, cobalt particles, iron particles, and molybdenum particles are diffused and bonded to each other. , obtain a porous infiltration matrix. After that, copper and bismuth are infiltrated into the voids of the infiltrated base material, but at this time, the inside of the container contains a large amount of bismuth vapor. It creates an atmosphere. Then, the obtained electrode material is taken out from the container and shaped into a predetermined size and shape. Process the area.
このようにして
Ｃｒ、Ｃ２：３０重重量
Ｎｉ： ２重厘％
Ｃｏ： ５重量％
Ｆｅ： １重量％
Ｍｏニア重量％
Ｂｉ： １５重量％
Ｃｕ： 残り
からなる電極材料を第一試料として作成し、この第一試
料の他に、
Ｃｒ、Ｃ２：１８重量％
Ｎｉ： ５重量％
Ｃｏ： １重量％
Ｆｅ： １重量％
Ｍｏ：１８重量％
Ｂｉ：１２重量％
Ｃｕ： 残り
からなろ第二試料及び
Ｃｒ、Ｃ２＝ ４重量％
Ｎｉ： １重量％
Ｃｏ： ２重量％
Ｆｅ： ５重量％
Ｍｏ：２０重量％
Ｂｉ： １０重１％
Ｃｕ： 残り
からなろ第三試料を用意し、それぞれ直径５゜職で厚さ
−が６．５ｍの円盤状に加工すると共にその外周縁に４
ｍの曲率半径の丸味を付けたものを第２図に示す真空イ
ンタラプタの′ｉ４極１３．１４として組込み、耐溶着
性及び電流しゃ断性能及び電流さい断値を調べた。In this way, an electrode material consisting of Cr, C2: 30% by weight, Ni: 2% by weight, Co: 5% by weight, Fe: 1% by weight, Monia% by weight, Bi: 15% by weight, and Cu: the remainder was prepared as a first sample. In addition to this first sample, Cr, C2: 18% by weight Ni: 5% by weight Co: 1% by weight Fe: 1% by weight Mo: 18% by weight Bi: 12% by weight Cu: The remaining second sample and Cr, C2 = 4% by weight Ni: 1% by weight Co: 2% by weight Fe: 5% by weight Mo: 20% by weight Bi: 10% by weight Cu: A third sample was prepared from the rest, and each sample was made with a diameter of 5°. It was machined into a disk shape with a thickness of 6.5 m, and 4.
The rounded one with a radius of curvature of m was incorporated into the vacuum interrupter shown in FIG.
耐溶着性に関しては、可動側の電極１３を固定側の電極
１４に対して１３０ ｋｇｆで加圧し、この状態で２５
ｋＡ （ｒ、ｍｓ、 ）の電流を３秒間通電した後、
２００ ｋｇｆの静的な引張り力を′：４極１３に加え
た所、三つの試料とも電極１４から電極１３を問題なく
引き離すことができた。又、その後の接触抵抗の増加は
三つの試料とも２０％以内に収まった。Regarding the welding resistance, the movable side electrode 13 is pressurized against the fixed side electrode 14 at 130 kgf, and in this state 25 kgf is applied.
After applying a current of kA (r, ms, ) for 3 seconds,
When a static tensile force of 200 kgf was applied to the 4-pole 13, the electrode 13 could be separated from the electrode 14 in all three samples without any problem. Further, the subsequent increase in contact resistance was within 20% for all three samples.
又、電流しゃ断性能に関しては、？、２ｋＶの電圧条件
にて第一試料では２０ ｋＡ （ｒ、ａｇ、）の電流を
しゃ断でき、第二試料では２１ ｋＡ（、、、！、）の
電流をしゃ断でき、第三試料では２３ ｋＡ （ｒ、ｍ
ｓ、）の電流をしゃ断することができた。Also, what about current cutoff performance? , Under a voltage condition of 2 kV, the first sample can cut off a current of 20 kA (r, ag,), the second sample can cut off a current of 21 kA (,,,!,), and the third sample can cut off a current of 23 kA. (r, m
s,) could be cut off.
一方、電流さい断値に関しては、２００Ｖ。On the other hand, the current cutoff value is 200V.
１２０Ａで真空インタラプタを負荷開閉し、百回後、千
回後、−万回後、十万回後の電流さい断値をそれぞれ求
めた結果、第１図に示すように十万回後でもＩＡ以下に
収まる好結果が得られた。なお、この第１図に示すＯ印
。The vacuum interrupter was loaded and closed at 120A, and the current cutoff values after 100, 1,000, -0,000, and 100,000 cycles were calculated, and as shown in Figure 1, even after 100,000 cycles, IA The following good results were obtained. Note that the O mark shown in FIG.
Δ印、ｘ印はそれぞれ５０回測定の平均値を表しており
、σつが第一試料、八・るが第二試料、 Ｘ−−−−Ｘ
が第三試料の各電流さい断値の推移を示す。The Δ and x marks each represent the average value of 50 measurements, σ is the first sample, 8 is the second sample, X----X
shows the transition of each current cutoff value of the third sample.
Ｈ発明の効果
本発明の真空インタラプタの電極材料によると、２０か
ら７０重量％の範囲の銅と、５から７５重量％の範囲の
炭化クロムと、０．１から１０重量％の範囲のニッケル
と、０．１から１０重量％の範囲のコバルトと、０．１
から１０重量％の範囲の鉄と、２から７５重量％の範囲
のモリブデンと、１から２０重量％の範囲のビスマスと
で構成しているため、従来の銅ビスマス合金よりも電流
さい断値が低く、しかもタングステン銅焼結金属や炭化
タングステン址焼結金属よゆも電流しゃ断性能が高く、
耐溶着性や電流しゃ断性能及び電流さい断値等の特性が
全体的に向上した電極材料を得ることが可能である。具
体的には、十万回の開閉後でも電流さい断値をＩＡ以下
の低い値に保つことが可能な真空インタラプタを提供で
きろ。更に、高価な銀を全く使用していないことから電
極材料自体のコストを下げることができる。According to the electrode material of the vacuum interrupter of the present invention, copper in the range of 20 to 70% by weight, chromium carbide in the range of 5 to 75% by weight, and nickel in the range of 0.1 to 10% by weight. , cobalt in the range of 0.1 to 10% by weight, and 0.1
It is composed of iron ranging from 10% to 10% by weight, molybdenum ranging from 2% to 75% by weight, and bismuth ranging from 1% to 20% by weight, resulting in a lower current cutoff value than conventional copper-bismuth alloys. It has a low current interrupting performance, and has a higher current interrupting performance than tungsten copper sintered metal or tungsten carbide sintered metal.
It is possible to obtain an electrode material that has overall improved properties such as welding resistance, current cutoff performance, and current cutoff value. Specifically, it is possible to provide a vacuum interrupter that can maintain a current cutoff value at a low value below IA even after 100,000 times of opening and closing. Furthermore, since no expensive silver is used, the cost of the electrode material itself can be reduced.
【図面の簡単な説明】
第１図は本発明を真空インタラプタに応用した場合の電
流さい断値の特性を表すグラフ、第２図はその真空イン
タラプタの一例を表す断面図である。
図中の符号で１１，１２はリード棒、１３゜１４は電極
である。
第１図BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a graph showing the characteristics of a current cutoff value when the present invention is applied to a vacuum interrupter, and FIG. 2 is a sectional view showing an example of the vacuum interrupter. In the figure, 11 and 12 are lead rods, and 13 and 14 are electrodes. Figure 1
Claims (1)
範囲の炭化クロムと、０．１から１０重量％の範囲のニ
ッケルと、０．１から１０重量％の範囲のコバルトと、
０．１から１０重量％の範囲の鉄と、２から７５重量％
の範囲のモリブデンと、１から２０重量％の範囲のビス
マスとからなる真空インタラプタの電極材料。copper in the range of 20 to 70% by weight, chromium carbide in the range of 5 to 75% by weight, nickel in the range of 0.1 to 10% by weight, and cobalt in the range of 0.1 to 10% by weight;
Iron ranging from 0.1 to 10% by weight and 2 to 75% by weight
vacuum interrupter electrode material comprising molybdenum in the range of 1 to 20% by weight bismuth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26935588A JPH02117041A (en) | 1988-10-27 | 1988-10-27 | Electrode material for vacuum interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26935588A JPH02117041A (en) | 1988-10-27 | 1988-10-27 | Electrode material for vacuum interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02117041A true JPH02117041A (en) | 1990-05-01 |
Family
ID=17471225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26935588A Pending JPH02117041A (en) | 1988-10-27 | 1988-10-27 | Electrode material for vacuum interrupter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02117041A (en) |
-
1988
- 1988-10-27 JP JP26935588A patent/JPH02117041A/en active Pending
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