JPS63264897A - Plasma electrode - Google Patents
Plasma electrodeInfo
- Publication number
- JPS63264897A JPS63264897A JP62098396A JP9839687A JPS63264897A JP S63264897 A JPS63264897 A JP S63264897A JP 62098396 A JP62098396 A JP 62098396A JP 9839687 A JP9839687 A JP 9839687A JP S63264897 A JPS63264897 A JP S63264897A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- electrode material
- hole
- plasma
- electrode member
- 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
- 239000007772 electrode material Substances 0.000 claims abstract description 41
- 238000005520 cutting process Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 229910052735 hafnium Inorganic materials 0.000 description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Plasma Technology (AREA)
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、プラズマ切断用トーチに用いるプラズマ電極
に係り、詳しくは電極基部の先端部にジルコニウム、ハ
フニウムなどの電極材を、確実に固着したプラズマ電極
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a plasma electrode used in a plasma cutting torch, and more specifically to a plasma electrode having an electrode material such as zirconium or hafnium firmly fixed to the tip of the electrode base. Regarding.
従来の技術とその問題点
一般に、この種のプラズマ電極は、第５図ないし第７図
に示すようなプラズマ切断用トーチに用いられる。この
プラズマ切断用トーチの構成は、トーチ本体１．シール
ドカップ２．チンプ３．ガス分岐管４．電極５．電極ホ
ルダ６゜銅バイブ７などにより構成されている。そして
電極５と母材８間にプラズマアーク９を発生させ、母材
８を切断する。このとき、この種のプラズマ切断（エア
プラズマまたは酸素プラズマ □など）では、ガス
として例えば圧縮エアを用いるが、トーチスイッチ１２
の投入と同時に圧縮エアが母材８の切断部に供給される
。圧縮エアは、適宜トーチ本体ｌの内部に送気されてき
て銅パイプ７から電極ホルダ６に設けられたガス通路６
ａを通り、ガス分岐管４で分岐され、一方はガス分岐管
４のオリフィス４ａを通り、チップ３内を経て、チップ
３のチップ孔３ａから作動ガス１０として放出される。Prior art and its problems Generally, this type of plasma electrode is used in plasma cutting torches as shown in FIGS. 5 to 7. The configuration of this plasma cutting torch is as follows: torch body 1. Shield cup 2. Chimp 3. Gas branch pipe 4. Electrode 5. It consists of an electrode holder 6°, a copper vibrator 7, and the like. Then, a plasma arc 9 is generated between the electrode 5 and the base material 8 to cut the base material 8. At this time, in this type of plasma cutting (air plasma, oxygen plasma, etc.), for example, compressed air is used as the gas, but the torch switch 12
At the same time, compressed air is supplied to the cut portion of the base material 8. The compressed air is appropriately fed into the torch body l, and is passed from the copper pipe 7 to the gas passage 6 provided in the electrode holder 6.
One of the gases passes through the orifice 4a of the gas branch pipe 4, passes through the inside of the chip 3, and is released from the chip hole 3a of the chip 3 as the working gas 10.
また他方は、ガス分岐管４の外側から、シールドカップ
２に囲まれたチップ３のガス通路３ｂを通り、シールド
カップ２のカップ孔２ａから冷却ガス１１として放出さ
れる。なお、１３はトーチケーブルである。The other gas passes through the gas passage 3b of the chip 3 surrounded by the shield cup 2 from the outside of the gas branch pipe 4, and is released as the cooling gas 11 from the cup hole 2a of the shield cup 2. Note that 13 is a torch cable.
ところが、この種のプラズマ切断では、電極５がその酸
化による消耗が著しいため、一般に電極５の先端部にジ
ルコニウム、ハフニウムなどの電極材を装着して用いて
いる。However, in this type of plasma cutting, the electrode 5 is subject to significant wear due to oxidation, and therefore, an electrode material such as zirconium or hafnium is generally attached to the tip of the electrode 5 for use.
このプラズマ切断用トーチの電極としては、第４図にも
示す電極５が用いられている。この電極５は、大柱部５
ｂおよびその両側部に連接した小柱部５ｃからなる電極
基部５ａの両端部（小柱部５Ｃ端部）に電極孔５ｅを穿
孔し、この電極孔５ｅにジルコニウム、ハフニウムなど
の電極材５１を圧入していた。なお５ｄは段差部であり
、この段差部５ｄで、電極５がガス分岐管４と電極ホル
ダ６に挟持された状態で支持されている。ところが、こ
の種のプラズマ切断用トーチでは、その電極５に用いる
電極材５１が、直径が１．６〜２ｍｍ、長さが３〜５ｍ
ｍ程度のものであり、これを第４図（Ａ）に示すように
電極孔５ｅに、矢印で示すその軸方向に圧入によって装
着しているのが現状である。そのため電極材５１が変形
して圧入しにくかったり、圧入によるため、（Ｂ）図に
示すように、電極材５１の後端部が若干はみだし、圧入
後に先端部を切削、整形などの仕上げをしている。As the electrode of this plasma cutting torch, an electrode 5 also shown in FIG. 4 is used. This electrode 5 has a large pillar portion 5
Electrode holes 5e are bored at both ends (ends of the small pillars 5C) of the electrode base 5a, which is made up of small pillars 5c connected to both sides of the electrode base 5a, and an electrode material 51 made of zirconium, hafnium, etc. It was press-fitted. Note that 5d is a stepped portion, and the electrode 5 is supported by the gas branch pipe 4 and the electrode holder 6 at this stepped portion 5d. However, in this type of plasma cutting torch, the electrode material 51 used for the electrode 5 has a diameter of 1.6 to 2 mm and a length of 3 to 5 m.
At present, it is press-fitted into the electrode hole 5e in the axial direction indicated by the arrow, as shown in FIG. 4(A). As a result, the electrode material 51 may be deformed and difficult to press-fit, or due to press-fitting, the rear end of the electrode material 51 may protrude slightly, as shown in Figure (B), and the tip may be finished by cutting, shaping, etc. after press-fitting. ing.
ところが、この仕上時においても、その熱影響などによ
り弛みが生じ電極材５１が抜は落ちるなど、加工上条々
問題があった。However, even during this finishing process, there were problems in processing, such as loosening due to the thermal effect and the electrode material 51 falling off.
なお（Ｃ）図は、小柱部５Ｃを大柱部５ｂの片側にのみ
設けたプラズマ電極の例である。Note that (C) is an example of a plasma electrode in which the small columnar portion 5C is provided only on one side of the large columnar portion 5b.
発明の目的
本発明の目的は、電極基部に電極材を確実に固着するこ
とを目的とし、さらには加工性の優れた信頼度の高いプ
ラズマ電極を提供することにある。OBJECTS OF THE INVENTION It is an object of the present invention to provide a highly reliable plasma electrode that is capable of reliably fixing an electrode material to an electrode base and has excellent workability.
発明の実施例
本発明のプラズマ電極は、第６図、第７図に示した内部
構造を有するプラズマ切断用トーチに適用しうるちので
あるが、第１図に示すように、このプラズマ電極１５は
、大柱部１５ｂとその両側部に連接した小柱部１５ｃと
により構成した電極基部１５ａの両端部に、（Ａ）図に
示すように、電極孔１５ｅを穿孔している。そ、してこ
の電極孔１５ｅに電極材５２を挿入し、電極基部前面１
５１ｃの電極材５２を囲む部位を、（Ｂ）図に示すよう
に、加圧具１４を用い電極１５の端部前面すなわち電極
基部１５ａの前面より矢印方向に凹圧することにより、
この電極材５２を挟圧し固着する。電極材５２は、予め
所定の孔に穿孔した電極孔１５ｅに対応する径、長さの
ものに加工してあり、また加圧具１４は電極材５２と同
心的に設けられている。Embodiments of the Invention The plasma electrode of the present invention can be applied to a plasma cutting torch having the internal structure shown in FIGS. 6 and 7. As shown in FIG. As shown in Figure (A), electrode holes 15e are bored at both ends of an electrode base 15a constituted by a large pillar 15b and small pillars 15c connected to both sides thereof. Then, insert the electrode material 52 into the electrode hole 15e, and insert the electrode material 52 into the electrode base front surface 1.
51c surrounding the electrode material 52, as shown in FIG.
This electrode material 52 is pressed and fixed. The electrode material 52 is processed in advance to have a diameter and length corresponding to the electrode hole 15e drilled in a predetermined hole, and the pressurizing tool 14 is provided concentrically with the electrode material 52.
この加圧具１４は、電極材５２を挟圧固着するものであ
るが、第２図に示すように円リング状の凸部１４ａを有
するものであってもよいし、第３図に示すように断続す
る円状の凸部１４ｂであってもよい。要は、電極基部前
面１５１Ｃの電極材５２を囲む部位を、凹圧することに
より電極材５２を挟圧し固着するものであればよ（、そ
の他、様々の形状のものが考えられる。This pressurizing tool 14 is for clamping and fixing the electrode material 52, but it may have a circular ring-shaped convex portion 14a as shown in FIG. It may be a circular convex portion 14b that is interrupted by a circular convex portion 14b. In short, it is sufficient that the electrode material 52 is pinched and fixed by applying concave pressure to the portion surrounding the electrode material 52 on the front surface 151C of the electrode base (in addition, various shapes can be considered).
また、電極材５２の装着方法を問わず電極材５２を囲む
部位を凹圧することにより、この発明のプラズマ電極を
実施することができる。たとえば、従来例として説明し
た圧入によるものであっても、切削、整形の仕上げをし
たのち、電極基部前面１５１Ｃの電極材５２を囲む部位
を、同じように凹圧することにより電極材５２を電極基
部１５ａに確実に固着しうるちのであり、弛みなどによ
る電極材５２の抜は落ちも防ぎ得るものである。Further, regardless of the method of attaching the electrode material 52, the plasma electrode of the present invention can be implemented by applying concave pressure to the region surrounding the electrode material 52. For example, even if the method is press-fitted as described in the conventional example, after cutting and shaping, the area surrounding the electrode material 52 on the front surface 151C of the electrode base is similarly depressed, so that the electrode material 52 can be inserted into the electrode base. The electrode material 52 can be firmly fixed to the electrode material 15a, and can prevent the electrode material 52 from coming off or falling off due to loosening or the like.
第１図のプラズマ電極１５は、小柱部１５ｃを大柱部１
５ｂの両側部に設けたもので示したが、これは片側部の
みであってもよい。両側部に設けたものにあっては、片
側が消耗したときに、その向きを変え両側部とも使用し
うるようにして、電極１５としてその寿命を倍加するこ
とのできるものである。The plasma electrode 15 in FIG.
Although shown as being provided on both sides of 5b, it may be provided only on one side. In the case of electrodes provided on both sides, when one side is worn out, the direction can be changed so that both sides can be used, thereby doubling the life of the electrode 15.
本発明は、電極基部に電極材を嵌入しうる電極孔を穿孔
し、この孔に見合う所定の径、長さの電極材を挿入し、
そののち電極基部前面の電極材を囲む部位を凹圧し挟圧
固着するものである。さらには、電極基部への装着の方
法を問わず、電極材を囲む部位を凹圧することにより、
電極材をより強固に固着しうるちのである。The present invention involves drilling an electrode hole in an electrode base into which an electrode material can be inserted, inserting an electrode material having a predetermined diameter and length that matches the hole, and
Thereafter, the area surrounding the electrode material on the front surface of the electrode base is pressed in a concave manner to fix the electrode material under pressure. Furthermore, regardless of the method of attachment to the electrode base, by applying concave pressure to the area surrounding the electrode material,
This makes the electrode material stick more firmly.
発明の効果
本発明のプラズマ電極は、電極基部の電極孔を所定の孔
に穿孔するとともにぐ電極材を予め電極孔に対応する径
、長さのものを装着したものであるから、従来の圧入加
工によるときのような切削、整形を必要とせず、また電
極材が抜は落ちるようなこともない。しかも加工が簡単
で、電極材材料の無駄も省は電極基部に電極材を確実に
固着しうるものである。Effects of the Invention In the plasma electrode of the present invention, the electrode hole in the electrode base is drilled into a predetermined hole, and the electrode material with the diameter and length corresponding to the electrode hole is attached in advance, so that it can be replaced with the conventional press-fitting method. Unlike machining, cutting and shaping are not required, and the electrode material does not fall off when pulled out. Moreover, it is easy to process, reduces waste of electrode material, and can reliably fix the electrode material to the electrode base.
また、圧入などによる従来のものに対しても電極材の周
辺を凹圧する追加工を行うだけで、信頼性の高い確実な
製品が得られるなどの効果がある。Additionally, compared to the conventional method using press-fitting, it is possible to obtain a reliable and reliable product by simply performing an additional process of concavely pressing the periphery of the electrode material.
第１図（Ａ）（Ｂ）は、本発明のプラズマ電極の加工状
態を説明するための一部断面の側面図である。第２図は
、本発明のプラズマ電極の加工に用いる加圧具の拡大斜
視図である。第３図は、本発明に用いる別の加圧具の拡
大斜視図 １である。第４図は、従来例のプラズマ電
極の加工状態を説明するための一部断面の側面図である
。第５図は、本発明のプラズマ電極を使用するこの種の
プラズマ切断用トーチの外観図である。第６図は、第５
図の要部を示す半断面図である。第７図は、第６図の分
解斜視図である。FIGS. 1A and 1B are side views, partially in cross section, for explaining the processing state of the plasma electrode of the present invention. FIG. 2 is an enlarged perspective view of a pressurizing tool used for processing the plasma electrode of the present invention. FIG. 3 is an enlarged perspective view 1 of another pressurizing tool used in the present invention. FIG. 4 is a partially sectional side view for explaining the processing state of a conventional plasma electrode. FIG. 5 is an external view of this type of plasma cutting torch using the plasma electrode of the present invention. Figure 6 shows the fifth
FIG. 3 is a half-sectional view showing the main part of the figure. FIG. 7 is an exploded perspective view of FIG. 6.
Claims (2)
部前面の前記電極材を囲む部位を加圧具を用いて凹圧す
ることにより、前記電極材と同心的に該電極材を挟圧し
固着したことを特徴とするプラズマ電極。(1) Attach an electrode material to the electrode hole in the electrode base, and apply concave pressure to the area surrounding the electrode material on the front surface of the electrode base using a pressure tool to sandwich the electrode material concentrically with the electrode material. A plasma electrode characterized by being pressed and fixed.
前記電極孔に対応する径、長さのものを用いて装着した
ことを特徴とする特許請求の範囲第１項記載のプラズマ
電極。(2) A plasma electrode according to claim 1, characterized in that an electrode hole is formed in a predetermined hole, and an electrode material having a diameter and length corresponding to the electrode hole is attached. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62098396A JP2582568B2 (en) | 1987-04-20 | 1987-04-20 | Manufacturing method of plasma electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62098396A JP2582568B2 (en) | 1987-04-20 | 1987-04-20 | Manufacturing method of plasma electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63264897A true JPS63264897A (en) | 1988-11-01 |
| JP2582568B2 JP2582568B2 (en) | 1997-02-19 |
Family
ID=14218675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62098396A Expired - Lifetime JP2582568B2 (en) | 1987-04-20 | 1987-04-20 | Manufacturing method of plasma electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2582568B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172795A (en) * | 2011-01-19 | 2011-09-07 | 合肥京世建电子科技有限公司 | Eddy current evaporator component of water vapor plasma spray gun |
-
1987
- 1987-04-20 JP JP62098396A patent/JP2582568B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172795A (en) * | 2011-01-19 | 2011-09-07 | 合肥京世建电子科技有限公司 | Eddy current evaporator component of water vapor plasma spray gun |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2582568B2 (en) | 1997-02-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960820 |