JPH0593662U - Arc generation electrode - Google Patents
Arc generation electrodeInfo
- Publication number
- JPH0593662U JPH0593662U JP9006391U JP9006391U JPH0593662U JP H0593662 U JPH0593662 U JP H0593662U JP 9006391 U JP9006391 U JP 9006391U JP 9006391 U JP9006391 U JP 9006391U JP H0593662 U JPH0593662 U JP H0593662U
- Authority
- JP
- Japan
- Prior art keywords
- arc
- electrode
- generating electrode
- tip
- arc generating
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims description 9
- 230000020169 heat generation Effects 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 7
- 239000010937 tungsten Substances 0.000 description 7
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910001080 W alloy Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Discharge Heating (AREA)
- Arc Welding In General (AREA)
Abstract
(57)【要約】
【目的】 本考案はアーク発生用電極の耐消耗性の向上
にある。
【構成】 アーク発生用電極の先端後部にアーク発生用
電極の形成材より高い熱伝導率または電気伝導率をもっ
た領域を設けて、発生熱の放散を促進し、また電気抵抗
にもとづくシュール熱の発生を少なくして電極先端部の
温度上昇を少なくして目的を達成したものである。
(57) [Abstract] [Purpose] The present invention is to improve the wear resistance of the arc generating electrode. [Composition] A region with higher thermal conductivity or electric conductivity than the material forming the arc generating electrode is provided at the rear of the tip of the arc generating electrode to promote the dissipation of the generated heat and also the surreal heat based on the electric resistance. The object is achieved by reducing the occurrence of heat generation and reducing the temperature rise at the electrode tip.
Description
【０００１】[0001]
アーク発生用電極、例えば金属の溶接や切削などに使用されるプラズマトーチ 、即ちアーク発生用電極間に形成されこのアーク中に、プラズマガスを注入して 得られる極高温の炎の渦流を利用して、溶接などのための高温高速のプラズマ噴 流を形成するプラズマトーチにおいては、良好な溶接などを可能にするためアー ク発生用電極として次の特性をもつことが要求される。 即ち動作中におけるアーク発生用電極の先端の溶融蒸発による消耗変形を少な くして、アークの諸特性の変化を招きにくいようにすると同時に、寿命の延伸を 図りうるようにすることが要求される。 そこで従来から電極材として、高温のアークによっても溶融蒸発しにくいタン グステンを用いたり、タングステンにトリア，ランタナ，イットリアなどを添加 したタングステン合金を用いたりするなどの材質面の改善手段や、電極形状を最 適化するなどの手段により、耐消耗性の向上に努めることが行われている。 An arc generating electrode, for example, a plasma torch used for welding or cutting metal, that is, a vortex flow of an extremely high temperature flame formed by injecting plasma gas into the arc formed between the arc generating electrodes is used. In a plasma torch that forms a high-temperature, high-speed plasma jet for welding, etc., it is required that the arc-generating electrode have the following characteristics to enable good welding. That is, it is required to reduce wear and deformation of the tip of the arc generating electrode due to melting and evaporation during operation so that changes in various characteristics of the arc are less likely to occur, and at the same time, the life can be extended. Therefore, conventionally, as the electrode material, there has been used a material surface improvement method such as Tungsten, which does not easily melt and evaporate even by a high-temperature arc, or a tungsten alloy in which thoria, lanthana, yttria, etc. are added to tungsten, and electrode shape. Attempts are being made to improve wear resistance by means such as optimizing.
【０００２】[0002]
しかし近年におけるロボット溶接に代表される溶接の自動化や、高精度加工の 要求の高まりに伴い、現在のアーク発生用電極では要求に応えられにくくなりつ つあり、より耐消耗性に優れた電極の開発が要求されている。 However, with the recent automation of welding, represented by robot welding, and the increasing demand for high-precision machining, it is becoming difficult for current arc-generating electrodes to meet the demands, and electrodes with more excellent wear resistance are being used. Development is required.
【０００３】[0003]
本考案は以上に鑑みなされたもので、従来のものより耐消耗性に優れたアーク 発生用電極の提示にある。 The present invention has been made in view of the above, and is to present an electrode for arc generation that is more excellent in wear resistance than conventional electrodes.
【０００４】[0004]
本考案の目的は次の手段、即ち アーク発生用電極において、その点弧部分である電極先端の後部に、前記ア ーク発生用電極の形成材より高い熱伝導率と、この高熱伝導率によるアーク発生 用電極先端の温度上昇の低減効果を失わせない電気伝導率をもった領域、例えば アーク発生用電極の形成材にタングステンの場合、これより高熱伝導率である銅 ，銅タングステン、更には銅とタングステンの傾斜合金による領域を設けるか、 アーク発生用電極において、その点弧部分である電極先端の後部に、前記ア ーク発生用電極の形成材より高い電気伝導率と、この高電気伝導率によるアーク 発生用電極先端の温度上昇の低減効果を失わせない熱伝導率をもった領域、例え ば、アーク発生用電極の形成材がタングステンの場合、これより高電気伝導率で あるアルミニウムによる領域を設けることにより達成される。 The object of the present invention is to provide the following means, namely, in the arc generating electrode, at the rear portion of the electrode tip, which is the ignition portion, has a higher thermal conductivity than the material for forming the arc generating electrode and the high thermal conductivity. A region having electrical conductivity that does not lose the effect of reducing the temperature rise at the tip of the arc-generating electrode, for example, when tungsten is used as the material for forming the arc-generating electrode, copper, copper-tungsten, and A region made of a graded alloy of copper and tungsten is provided, or the arc generating electrode has a higher electric conductivity than that of the material forming the arc generating electrode and a higher electric conductivity at the rear of the electrode tip, which is the ignition portion. A region with a thermal conductivity that does not lose the effect of reducing the temperature rise at the tip of the arc generating electrode due to conductivity, for example, when the material for forming the arc generating electrode is tungsten, It is achieved by providing a region of aluminum which is electrically rate.
【０００５】[0005]
以上のようにすれば、アーク放電により電極先端部の熱は、アーク発生用電極 の後部に設けた高熱伝導率の領域により効果的に吸収されて、アーク発生用電極 の後部に伝達されたのち、例えば水冷されるアーク発生用電極の支持体に放散さ れるので、電極先端の温度上昇を少なくする。 According to the above, the heat of the electrode tip portion due to the arc discharge is effectively absorbed by the region of high thermal conductivity provided in the rear portion of the arc generating electrode, and then transferred to the rear portion of the arc generating electrode. For example, since it is dissipated on the support of the arc-generating electrode that is water-cooled, the temperature rise at the electrode tip is reduced.
【０００５】 またアーク発生用電極の後部に高い電気伝導率をもつ領域を設けた場合には、 これにより電極そのものの電気抵抗を低下させ、その低下分だけジュール熱の発 生を少なくして、電極先端の温度上昇を少なくする。従って、何れの場合も耐消 耗性を向上でき、消耗による電極の変形を少なくしてアークの諸特性の変化を少 なくし、しかもアーク発生用電極の寿命を長くできる。また従来のアーク発生用 電極と同一形状，同一寸法とした本考案アーク発生用電極において従来電極と消 耗の度合を同一とした場合には、それだけ大きい電流を流しうるので発生アーク の安定化などを図りうる。Further, when a region having a high electric conductivity is provided in the rear part of the arc generating electrode, the electric resistance of the electrode itself is lowered by this, and the generation of Joule heat is reduced by that amount, Reduce the temperature rise at the electrode tip. Therefore, in any case, abrasion resistance can be improved, deformation of the electrode due to wear can be reduced, changes in various characteristics of the arc can be reduced, and the life of the arc generating electrode can be extended. In addition, if the arc generation electrode of the present invention, which has the same shape and size as the conventional arc generation electrode, has the same degree of wear as the conventional electrode, a larger current can flow, so the generated arc is stabilized. Can be planned.
【０００６】[0006]
図１（ａ）（ｂ）はアーク発生用電極の後部内部にアーク発生用電極の形成材 より高い熱伝導率とこの高熱伝導率による電極先端の温度上昇の低下効果を失わ せない電気電導率をもった領域を設けた場合の本考案の一実施例を示す縦断側面 図及びＡ−Ａ′部矢視断面図である。図１において（１）はアーク発生用電極で あって、タングステン或いはタングステン合金を電極形成材とし、先端に円錐状 の点弧部分（１ａ）を有する円柱状をなす。（２）はタングステンより高熱熱伝 導率をもつ銅による領域であって、点弧部分（１ａ）側の先端に円錐状の頭部を もった円柱状に作られ、例えばアーク発生用電極（１）の中心に設けた埋め込み 孔（１ｂ）に溶融銅合金を流し込むことにより形成される。（３）は例えば銅製 の電極支持体であって、水冷部（３ａ）を有し、アーク発生用電極（１）との螺 合により（図中点線図示のようにねじ止めしてもよい）一体化されるもので、温 度上昇の低減効果を増すため、図２に示すようにアーク発生用電極（１）の後部 端面全面にも高熱伝導率の領域（２）を設けてもよい。 1 (a) and 1 (b) show a higher thermal conductivity than the material for forming the arc generating electrode inside the rear portion of the arc generating electrode, and an electric conductivity that does not lose the effect of lowering the temperature rise at the electrode tip due to this high thermal conductivity. FIG. 3 is a longitudinal side view and an AA ′ section cross-sectional view showing an embodiment of the present invention in the case of providing a region having an arrow. In FIG. 1, (1) is an arc generating electrode, which is made of tungsten or a tungsten alloy and has a columnar shape having a conical ignition portion (1a) at its tip. (2) is a region made of copper having a higher thermal conductivity than tungsten, and is formed in a columnar shape having a conical head at the tip on the side of the ignition portion (1a). It is formed by pouring a molten copper alloy into the buried hole (1b) provided in the center of 1). (3) is, for example, an electrode support made of copper, which has a water cooling part (3a) and is screwed with the arc generating electrode (1) (may be screwed as shown by the dotted line in the figure). In order to enhance the effect of reducing the temperature rise, it is also possible to provide a region (2) of high thermal conductivity on the entire rear end face of the arc generating electrode (1) as shown in FIG.
【０００７】 以上本考案の一実施例について説明したが、アーク発生用電極の後部に設ける 領域を、アーク発生用電極（１）の形成材より高電気伝導率の領域とする場合に は、図１の領域（２）を例えばアルミニウムにより形成すればよい。 なお本考案は他のアーク発生用電極にも適用して効果を奏することができる。One embodiment of the present invention has been described above. However, in the case where the region provided at the rear of the arc generating electrode has a higher electric conductivity than the forming material of the arc generating electrode (1), The first region (2) may be formed of aluminum, for example. The present invention can also be applied to other arc-generating electrodes to exert the effect.
【０００８】[0008]
以上から明かなように本考案によれば、従来のものより高い耐消耗性をもつア ーク発生用電極を提供しうるもので、プラズマトーチ用その他のアーク発生用電 極に適用して、高精度の溶接を可能にするなどの各種の優れた効果を得られる。 As is clear from the above, according to the present invention, it is possible to provide an arc generating electrode having higher wear resistance than the conventional one, and it is applied to a plasma torch and other arc generating electrodes, Various excellent effects such as high precision welding can be obtained.
【図１】本考案の実施例の説明図である。FIG. 1 is an explanatory view of an embodiment of the present invention.
【図２】本考案の他の実施例の説明図である。FIG. 2 is an explanatory view of another embodiment of the present invention.
（１） アーク発生用電極 （１ａ） 点弧部分 （１ｂ） 埋め込み孔 （２） アーク発生用電極本体より高熱伝導率かつ高電
気電導率の領域 （３） 電極支持体 （３ａ） 水冷部(1) Arc generating electrode (1a) Ignition part (1b) Embedded hole (2) Region of higher thermal conductivity and higher electrical conductivity than the arc generating electrode body (3) Electrode support (3a) Water cooling part
Claims (2)
分である電極先端の後部に、前記アーク発生用電極の形
成材より高い熱伝導率と、この高熱伝導率によるアーク
発生用電極先端の温度上昇の低減効果を失わせない電気
伝導率をもった領域を設けたことを特徴とするアーク発
生用電極。1. An arc-generating electrode, which has a higher thermal conductivity than a material forming the arc-generating electrode, and a temperature of the arc-generating electrode tip due to the high thermal conductivity, at a rear portion of the electrode tip, which is the ignition portion. An electrode for arc generation, which is provided with a region having electric conductivity that does not lose the effect of reducing the rise.
分である電極先端の後部に、前記アーク発生用電極の形
成材より高い電気伝導率と、この高電気伝導率によるア
ーク発生用電極先端の温度上昇の低減効果を失わせない
熱伝導率をもった領域を設けたことを特徴とするアーク
発生用電極。2. The arc-generating electrode has a higher electrical conductivity than the material for forming the arc-generating electrode at the rear portion of the electrode tip, which is the ignition portion, and the tip of the arc-generating electrode tip due to this high electrical conductivity. An electrode for arc generation characterized by having a region having a thermal conductivity that does not lose the effect of reducing the temperature rise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991090063U JP2544179Y2 (en) | 1991-10-08 | 1991-10-08 | Arc generating electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991090063U JP2544179Y2 (en) | 1991-10-08 | 1991-10-08 | Arc generating electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0593662U true JPH0593662U (en) | 1993-12-21 |
| JP2544179Y2 JP2544179Y2 (en) | 1997-08-13 |
Family
ID=13988100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991090063U Expired - Lifetime JP2544179Y2 (en) | 1991-10-08 | 1991-10-08 | Arc generating electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2544179Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5064142A (en) * | 1973-10-11 | 1975-05-31 | ||
| JPS62270294A (en) * | 1986-05-20 | 1987-11-24 | Matsushita Electric Ind Co Ltd | plasma cutting torch |
| JPH03225727A (en) * | 1990-01-17 | 1991-10-04 | Esab Welding Prod Inc | Electrode for plasma arc torch |
-
1991
- 1991-10-08 JP JP1991090063U patent/JP2544179Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5064142A (en) * | 1973-10-11 | 1975-05-31 | ||
| JPS62270294A (en) * | 1986-05-20 | 1987-11-24 | Matsushita Electric Ind Co Ltd | plasma cutting torch |
| JPH03225727A (en) * | 1990-01-17 | 1991-10-04 | Esab Welding Prod Inc | Electrode for plasma arc torch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2544179Y2 (en) | 1997-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4726038B2 (en) | System for welding and method of use thereof | |
| ES2555981T3 (en) | Contact tip with copper compound reinforced with refractory material; welding torch with such a contact tip | |
| CA2303546C (en) | Tapered electrode for plasma arc cutting torches | |
| JP2004527878A (en) | Composite electrode for plasma arc torch | |
| JPH0658840B2 (en) | Transfer type plasma torch | |
| US6583378B1 (en) | Plasma machining electrode and plasma machining device | |
| JPS6228084A (en) | Plasma jet torch | |
| JPH0593662U (en) | Arc generation electrode | |
| JPS63154273A (en) | Plasma torch | |
| JPS60247491A (en) | Electrode for oxygen plasma and air plasma cutting and its production | |
| EP4070902A1 (en) | Improved method and arrangement for a martensite-free brazing process | |
| CN210143149U (en) | Arc generating metal material for plasma torch electrode for cutting steel plate | |
| JPS6225478B2 (en) | ||
| JP2001287039A (en) | Plasma torch | |
| JPH0523859A (en) | Plasma cutting device and plasma cutting torch | |
| JP2939693B2 (en) | Nozzle for plasma torch | |
| CN223268814U (en) | A graphite electrode for single crystal furnace | |
| JPH04167996A (en) | Production of non-consumable electrode for arc machining | |
| JPS5915436Y2 (en) | Non-consumable electrode tip for arc melting furnace | |
| JP2012192443A (en) | Nozzle for plasma cutting device, and plasma torch | |
| JP3812116B2 (en) | Arc machining torch and arc machining electrode | |
| AU763778B2 (en) | Tapered electrode for plasma arc cutting torches | |
| JP2859299B2 (en) | Torch for plasma processing | |
| KR20000003214U (en) | Oxygen plasma arc cutting torch electrode that suppresses the occurrence of double arc and improves the service life | |
| CN117222492A (en) | Electrode for connecting with the emitter head (plug) of a plasma torch by increasing the area of the cooling surface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |