JPS58179587A - Production of electric contact with arc-proof metal - Google Patents

Production of electric contact with arc-proof metal

Info

Publication number
JPS58179587A
JPS58179587A JP57060971A JP6097182A JPS58179587A JP S58179587 A JPS58179587 A JP S58179587A JP 57060971 A JP57060971 A JP 57060971A JP 6097182 A JP6097182 A JP 6097182A JP S58179587 A JPS58179587 A JP S58179587A
Authority
JP
Japan
Prior art keywords
arc
pipe
resistant metal
electric contact
copper
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
Application number
JP57060971A
Other languages
Japanese (ja)
Inventor
Tei Odawara
小田原　禎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP57060971A priority Critical patent/JPS58179587A/en
Publication of JPS58179587A publication Critical patent/JPS58179587A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00—Electron-beam welding or cutting
    • B23K15/0046—Welding
    • B23K15/0086—Welding welding for purposes other than joining, e.g. built-up welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/302—Cu as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26

Abstract

PURPOSE:To obtain an electric contact which is damaged less by the arc in the stage of opening and closing by spraying and melting powder of an arc-proof metallic material on the inside surface in the end part of a freely rotatable pipe-like base material then working the same to a prescribed shape. CONSTITUTION:A copper pipe 21 is mounted to a rotating device 24, and is rotated. High density energy beam such as an electron beam or laser beam 23 is irradiated to the pipe while powder 22 of tungsten and copper is supplied by using a supply device 25, whereby an arc-proof metallic part 22a is formed. The pipe 21 formed with the part 22a on the inside surface in the end part is plastically worked or machined to a prescribed shape and is divided. If the divided individual contacts require hardness, the contacts are deformed plastically by cold forging or the like so as to have higher hardness.

Description

【発明の詳細な説明】 〔技術分野の説明〕 本発明は耐弧金属付電気接触子の製造方法Ｓ二関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Description of Technical Field] The present invention relates to a method S2 for manufacturing an electrical contact with an arc-resistant metal.

〔従来技術の説明〕[Description of prior art]

耐弧金属付電気接触子は電力用開閉＃ｅｗｅのじや＃器
、開閉器あ・よび＃ｒ路ｆｉｉｌ二使用され、足常電流
の通電と開閉および故障時の大電流のしゃ断を村なう部
品Ｃ二使用される。Electric contacts with arc-resistant metal are used in electrical power switches, switches, and circuits, and are used to carry and close regular currents, and to cut off large currents in the event of a failure. Part C2 is used.

接触方法は突合せ接触、すべり接触およびころがり接触
があり用途６二よって使い分けられている。Contact methods include butt contact, sliding contact, and rolling contact, and are used depending on the application.

大容量の１１−多く使用されているすべｖ接触形ｌ１ｌ
Ｉ成について図面により説明する。第１図はすべり接触
の榊造例を示す。同定側導体２と町動餉尋体３の周囲１
−複数個取付けられている耐弧金属付電気接触子１とを
、接触させ通電させる栴造である。開閉は絡１図の可動
側導体３が矢印の方向Ｃ二動き行われる。いずれの導体
および接触子（二おいても通電ｓＩ：は導電性の良い純
銅が使用される。Large capacity 11-V contact type l1l which is often used
The I-formation will be explained with reference to the drawings. Figure 1 shows an example of Sakaki construction with sliding contact. Surroundings 1 of identification side conductor 2 and town moving body 3
- This is a method for connecting and energizing a plurality of electric contacts 1 with arc-resistant metal attached. Opening/closing is performed by moving the movable conductor 3 in the direction C of the arrow 1 in Figure 1. Pure copper with good conductivity is used for both conductors and contacts.

大容量の電流の開閉時Ｃニアークが発生する部位ｌ二は
耐弧金員が取付けられる。耐弧金属は銅−タングステン
または銀−タングステンなどの焼結合金が使用される。An arc-proof metal member is attached to the area l2 where near-arc occurs when a large amount of current is switched on and off. As the arc-resistant metal, a sintered alloy such as copper-tungsten or silver-tungsten is used.

従来の耐弧金属の取付方法は第２図１ｍ示すよう１二焼
結Ｉ−より製造された耐弧金属片１２と純銅で製造され
た台金１１を銀ろうまたはりん銅ろうなどのろう材１３
で接合されるものがほとんどである。The conventional method for attaching arc-resistant metal is as shown in Fig. 2, which involves attaching an arc-resistant metal piece 12 made of sintered I- and a base metal 11 made of pure copper to a brazing material such as silver solder or phosphor solder. 13
Most of them are joined by .

ろう付接合された耐弧金属付電気接触子１ｉ１を大容量
の電流の開閉時Ｃ−発生するアークの熱で耐弧金員ろう
付部（二損傷を１！たす。これはろう付部は他の母材部
より溶融温度が低いことおよびろう付による欠陥、例え
はボイドの発生による。When the electrical contact 1i1 with arc-resistant metal that has been joined by brazing is opened and closed with a large amount of current, the heat of the arc generated will damage the arc-resistant metal brazed part (2 damage is increased by 1!. This is the brazed part This is due to the fact that the melting temperature is lower than that of other base metal parts and defects due to brazing, such as voids.

電気接触子が十分な機能を失うと事故ｔａのしゃ断が困
難となり東に大きな事故へ発展させることになる。If the electric contact loses its sufficient function, it will be difficult to shut off the accident, leading to a major accident.

〔発明の目的〕[Purpose of the invention]

不発ＢＡは開閉装置の大容量の電流の開閉時ｌ二発生す
るアークの熱Ｃ二さらされても耐弧金属の損傷の少い、
また経済性（１優れた耐弧金属付電気接触子の製造方法
を提供することを目的とする。Unexploded BA is a type of non-explosion metal with little damage to the arc-resistant metal even if it is exposed to the heat of the arc generated when the switchgear opens and closes a large amount of current.
Another object of the present invention is to provide a method for manufacturing an electrical contact with an arc-resistant metal that is economically efficient (1).

〔発明の構成〕[Structure of the invention]

以下本発明の夾施例Ｃユついて説明する。第３図および
第４図は本発明６ユめたっての具体的構成をホす。導電
率の＾い純銅パイプ２１の端部内面Ｉニタングステンお
よび銅の粉２２を散布しながら高密度エネルギー熱源た
とえに電子ビームあるいはレーザビーム四を照射し銅パ
イプの一部と粉状のタングステンおよび銅を＃１ｌｌＩ
！１させ耐弧金属部２２（２を成形する０さらに能率を
上けるためＩ：銅パイプを回転装置ムに散り付は自動的
に回転させタングステンおよび銅の粉ηを供給装置δを
用いて自動的に供給しながらビームムを照射し耐弧金Ｊ
ｇ　ｍ　２２ａを成形する。A further embodiment C of the present invention will be described below. FIGS. 3 and 4 show a specific configuration of the present invention. While sprinkling tungsten and copper powder 22 on the inner surface of the end of the pure copper pipe 21, which has high conductivity, a high-density energy heat source (for example, an electron beam or a laser beam) is irradiated, and a part of the copper pipe and the powdered tungsten and Copper #1llI
! 1 to form the arc-resistant metal part 22 (2) To further improve efficiency I: Sprinkling the copper pipe on the rotating device automatically rotates it and automatically supplies the tungsten and copper powder η using the feeding device δ. Arc-resistant metal J is irradiated with a beam while supplying
Form g m 22a.

タングステンと銅の比率は耐弧特性の優れているタング
ステンの割合が６０〜８ｏ−となるよう６１供Ｍ装皺６
の中でＩＩ贅する。また拡散性の優れているニッケル粉
末を少量加え良好な接合部を得ることもできる。The ratio of tungsten and copper is set so that the ratio of tungsten, which has excellent arc resistance, is 60 to 8 o-.
Indulge in II. It is also possible to obtain a good joint by adding a small amount of nickel powder, which has excellent diffusibility.

銅バイブ２１の端部内面に耐弧金属部が成形されたのち
塑性加工あるいは切削加工１二より所定の形状番−加工
し、第４図６二示す如く分割する。After an arc-resistant metal part is formed on the inner surface of the end of the copper vibrator 21, it is processed into a predetermined shape by plastic working or cutting 12, and divided as shown in FIG. 4, 62.

分割の方法は切削加工または鋸切断などにより行なう。The division is performed by cutting or sawing.

分割され九個々の接触子＃−を−さを必要とする場合は
冷関銀造などにより塑性変形をさせ硬さを増す。If it is necessary to separate the nine individual contactors #-, they are plastically deformed using Reiseki Ginzo or the like to increase their hardness.

〔発明の作用〕[Action of the invention]

電子ビームまたはレープビームなどの高密度エネルギー
熱源＋＝よって耐弧金属部を一体Ｉ：溶１ｌＩｌｉ１接
合するため耐弧金属が焼結で製造されろう付Ｉ：より台
金に接合されるものに比べて大容量の電流の開閉時に発
生するアークの熱６二よって耐弧金属部接合部の損傷が
少くなり開閉装置としての機能を維持できる。High-density energy heat source such as electron beam or rape beam The arc heat 62 generated when a large amount of current is switched on and off causes less damage to the joints of the arc-resistant metal parts, and the function as a switchgear can be maintained.

また電子ビームおよびレーザビーム溶！Ｉは制御性−１
浚れ再境性な１するため−Ｉ！ｉＬ溶接条件を設定すれ
ば品質の安定した製品を大量に製造することができる。Also electron beam and laser beam melting! I is controllability-1
To do dredging and re-boundary 1-I! By setting iL welding conditions, products with stable quality can be manufactured in large quantities.

本発明方法によれは耐弧金属部の厚さを増やしたい場合
に盛るＮＩ数を増やすことＣ二より簡単にできる。たと
えば耐弧金ａ部の厚さが５ｍ必簀な場合は１層で盛れる
量が１閣でおれば５層盛ることにより所定の寸法となる
。According to the method of the present invention, when it is desired to increase the thickness of the arc-resistant metal part, it is possible to increase the number of NIs more easily than C2. For example, if the thickness of the arcproof metal part A is required to be 5 m, and if the amount that can be stacked in one layer is one layer, then the predetermined size can be achieved by stacking five layers.

１層で盛れる厚さは粉末金属の供給量、銅パイプの周速
、盛り幅および電子ビームあるいはレーザビームなどゐ
高密度エネルギー熱源の入力量で決まる。The thickness that can be built up in one layer is determined by the amount of powder metal supplied, the circumferential speed of the copper pipe, the width of the buildup, and the input amount of a high-density energy heat source such as an electron beam or laser beam.

〔総合的な効果〕[Overall effect]

電子ビームまたはレーザビームなどの為密度エネルギー
熱源で自動的に製造することによって耐弧金属付電気接
触子は次Ｃ；示す効果かめる。即ち大容量の電流の開閉
時Ｃ−発生するアークの熱によっても耐弧金属が剥離脱
落しないためＣ二装置としての機能を充分ｌ二釆すこと
ができ発’ｔ＊器および食電憬・を損傷することはない
０ また焼結の工程を雀略することおよび粉末金属の量を適
当に調整できるため材料歩留りが同上することじより安
価な耐弧金ＩＩ４付電気接触子を製造することができる
０By automatically manufacturing the electric contact with a density energy heat source such as an electron beam or a laser beam, the arc-resistant metal-coated electrical contact can achieve the following effects. In other words, the arc-resistant metal does not peel off or fall off even when a large amount of current is switched on and off due to the heat of the arc generated, so it can fully function as a C2 device. In addition, since the sintering process is omitted and the amount of powder metal can be adjusted appropriately, the material yield is the same as above.To manufacture an electrical contact with arc-resistant metal II4 that is cheaper than the above. can do 0

【図面の簡単な説明】 第１図（−＞　（Ｊ）は従来の接触部の構造を示す正面
図及び側面図、第２凶は従来の耐弧金属付電気接触子の
構造を示す図、第３図（−）　（＋）は本発明の一実施
例の製造工程過程を断面で示す正面図及び−面図翫鶏を
図は完成状態を示す側面図である。[Brief Description of the Drawings] Figure 1 (-> (J) is a front view and side view showing the structure of a conventional contact part, and the second figure is a diagram showing the structure of a conventional electric contact with arc-resistant metal. FIGS. 3(-) and 3(+) are a front view showing the manufacturing process of an embodiment of the present invention in cross section, and the - side view is a side view showing the completed state.

Claims (2)

【特許請求の範囲】[Claims] （１）　　回転自在Ｃ二支持されたパイプ状母材の端部
内面に耐弧金Ｆ４材粉末を散布し、この粉末を高密度エ
ネルギー熱源を照射酸二より溶融して耐弧金属部を形成
し、しかる俊パイグ状母材を所定形状に加工するようＣ
二したｌ１ｌＴｔ弧金属付電気接触子の製造方法(1) Arc-resistant metal F4 material powder is sprinkled on the inner surface of the end of the pipe-shaped base material supported by the rotatable C2, and this powder is melted with irradiated acid using a high-density energy heat source to form an arc-resistant metal part. Then, C
Manufacturing method for electric contact with arc metal （２）耐弧金）Ｉｇ初木の散布がパイプ状母材の回転と
とも（二行なわれる％ＦＦ請求の範囲第１項記載の耐弧
金属付電気接触子の製造方法(2) Arc-resistant metal) Spreading of Ig seedlings is carried out twice as the pipe-shaped base material rotates.
JP57060971A 1982-04-14 1982-04-14 Production of electric contact with arc-proof metal Pending JPS58179587A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57060971A JPS58179587A (en) 1982-04-14 1982-04-14 Production of electric contact with arc-proof metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57060971A JPS58179587A (en) 1982-04-14 1982-04-14 Production of electric contact with arc-proof metal

Publications (1)

Publication Number Publication Date
JPS58179587A true JPS58179587A (en) 1983-10-20

Family

ID=13157810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57060971A Pending JPS58179587A (en) 1982-04-14 1982-04-14 Production of electric contact with arc-proof metal

Country Status (1)

Country Link
JP (1) JPS58179587A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5656185A (en) * 1993-02-17 1997-08-12 Electric Power Research Institute Method and apparatus for repairing damaged tubes by interior laser clad welding
US5789720A (en) * 1992-12-30 1998-08-04 Westinghouse Electric Corporation Method of repairing a discontinuity on a tube by welding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5789720A (en) * 1992-12-30 1998-08-04 Westinghouse Electric Corporation Method of repairing a discontinuity on a tube by welding
US5656185A (en) * 1993-02-17 1997-08-12 Electric Power Research Institute Method and apparatus for repairing damaged tubes by interior laser clad welding

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