JPH01150477A - Torch for plasma cutting - Google Patents
Torch for plasma cuttingInfo
- Publication number
- JPH01150477A JPH01150477A JP62309008A JP30900887A JPH01150477A JP H01150477 A JPH01150477 A JP H01150477A JP 62309008 A JP62309008 A JP 62309008A JP 30900887 A JP30900887 A JP 30900887A JP H01150477 A JPH01150477 A JP H01150477A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- electrode
- insulating pipe
- torch
- plasma
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- SWELZOZIOHGSPA-UHFFFAOYSA-N palladium silver Chemical compound [Pd].[Ag] SWELZOZIOHGSPA-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract 2
- 230000002542 deteriorative effect Effects 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は作動ガスを用いるプラズマ切断用トーチに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a plasma cutting torch using a working gas.
従来の技術
作動ガスを用いるプラズマアーク切断法の装置を第３図
に示す。同図において、９は作動ガスを圧縮し、トーチ
先端に送るフンプレソサ、１Ｑは作動ガスの２次圧を一
定値に調整するレギュレータ、１１はパワーを供給する
だめのプラズマ切断用電源、１２は母材１８と電源１１
を接続する接地ケーブル、１３はプラズマ切断用トーチ
である。An apparatus for plasma arc cutting using a conventional working gas is shown in FIG. In the figure, 9 is a compressor that compresses the working gas and sends it to the tip of the torch, 1Q is a regulator that adjusts the secondary pressure of the working gas to a constant value, 11 is a plasma cutting power supply that supplies power, and 12 is a motherboard. material 18 and power supply 11
13 is a plasma cutting torch.
トーチ１３は電ランを内蔵し、かつ作動ガスをトーチ先
端部に送る冷却ケーブル１４、トーチスイッチケーブル
１６、アークスタートを良好にするだめに高周波をのせ
るパイロットケーブル１６により構成される。従来の切
断トーチ１３の先端部１７の形状について以下に説明す
る。The torch 13 has a built-in electric lamp and is composed of a cooling cable 14 that sends working gas to the tip of the torch, a torch switch cable 16, and a pilot cable 16 that carries a high frequency wave for good arc starting. The shape of the tip 17 of the conventional cutting torch 13 will be described below.
従来の切断トーチの先端部構造は第２図に示す通りであ
る。The structure of the tip of a conventional cutting torch is shown in FIG.
１は先端部にジルコニウムやハフニウム等の陰極材を埋
め込んだ電極、２はプラズマアークを絞り母材に供給す
るチップ、３は電極１とチップ２を電気的に絶縁する絶
縁管、４は電極１、チップ２、絶縁管３をトーチ本体金
具６に固定するガイドノズノペ６は導電部の外部への露
出を防止するノズル、７はプラズマアークの緊縮ならび
にチップの冷却を行なう作動ガスより製作されているも
のである。1 is an electrode with a cathode material such as zirconium or hafnium embedded in the tip; 2 is a chip that squeezes the plasma arc and supplies it to the base material; 3 is an insulating tube that electrically insulates electrode 1 and chip 2; 4 is electrode 1 , a guide nozzle 6 for fixing the tip 2 and the insulating tube 3 to the torch body metal fitting 6 is a nozzle that prevents the conductive part from being exposed to the outside, and 7 is made of a working gas that constricts the plasma arc and cools the tip. It is.
プラズマアーク切断においては、非接触切断のアークス
タートを容易にするために、電極１と千ノブ２の間でパ
イロットアークを発生させている。In plasma arc cutting, a pilot arc is generated between the electrode 1 and the thousand knob 2 in order to facilitate the arc start of non-contact cutting.
発明が解決しようとする問題点
第２図に示すように従来のプラズマトーチ先端構造にお
いて、パイ日ソ１−アークを電極１とチップ２に発生さ
せる場合、チップ２の内面に流れる作動ガス７の流量お
よびチップ２の内面、電極１の表面状態の変化により高
周波スタートにヨルパイロソトアータが発生しないこと
があり母材の切断を始めることが出来ない場合が生じた
。Problems to be Solved by the Invention As shown in FIG. 2, in the conventional plasma torch tip structure, when a piezoelectric arc is generated between the electrode 1 and the tip 2, the working gas 7 flowing on the inner surface of the tip 2 is Due to changes in the flow rate, the inner surface of the tip 2, and the surface condition of the electrode 1, there were cases in which the cutter was not generated at the high frequency start, making it impossible to start cutting the base material.
パイロットアークを安定して発生させる方法として作動
ガス流量を減少させる方法や電極１、ノズルチップ２の
間隔を小さくとる方法がある。しかしこれらの方法によ
ると、電極１、チップ２の消耗を早めるばかりか切断性
能を低下させる問題点があった。Methods for stably generating a pilot arc include a method of reducing the flow rate of the working gas and a method of reducing the distance between the electrode 1 and the nozzle tip 2. However, these methods have the problem of accelerating the wear of the electrode 1 and tip 2 as well as reducing cutting performance.
問題点を解決するだめの手段
上記問題点を解決するため、本発明のプラズマ切断用ト
ーチは電子放射面を有する電極を中央に置き、プラズマ
流を緊縮するチップど連結する絶縁管からなり、作動ガ
スを絶縁管の内外面に流す構造を有し、前記絶縁管の外
周表面にアルｄニウム合金あるいは銀パラジウム等の導
体を付着させたものである。Means for Solving the Problems In order to solve the above problems, the plasma cutting torch of the present invention includes an electrode having an electron emitting surface in the center, an insulating tube connected to a tip that constricts the plasma flow, and It has a structure that allows gas to flow through the inner and outer surfaces of an insulating tube, and a conductor such as aldium alloy or silver palladium is attached to the outer peripheral surface of the insulating tube.
作用
上記構成において、絶縁管外周表面の導体は切断用電源
から高周波を受はチャージし、また再度スパークすると
いったコンデンサのような作用をする。よって作動ガス
の流量変化およびチップの内面、電極の表面状態の変化
に対しても常に安定して高周波を発生させパイロットア
ークを発生させることができるので切断性能を低下させ
ることなく良好な切断を行なうことが出来る。Function In the above configuration, the conductor on the outer peripheral surface of the insulating tube functions like a capacitor by receiving high frequency waves from the cutting power source, charging it, and sparking again. Therefore, even with changes in the flow rate of the working gas and changes in the inner surface of the tip and the surface condition of the electrode, high frequency waves can be generated stably and a pilot arc can be generated, allowing for good cutting without deteriorating cutting performance. I can do it.
実施例
第１図は本発明の一実施例を示す。１は先端にジルコニ
ウムあるいはハフニウム等の陰極材料を埋め込んだ電極
、２はプラズマ流を緊縮させるチップ、３は電極１とチ
ップ２を電気的に絶縁し、外周表面に銀パラジウムを焼
付した導体８を具備した絶縁管、４は電極１、チップ２
、絶縁管３をトーチ本体金具６に固定するガイドノズル
、６は導電部の外部への露出を防止するノズル、７はプ
ラズマアークの緊縮ならびにチップの冷却を行なう作動
ガスより構成する。Embodiment FIG. 1 shows an embodiment of the present invention. 1 is an electrode with a cathode material such as zirconium or hafnium embedded in the tip, 2 is a tip that constricts the plasma flow, and 3 is a conductor 8 that electrically insulates electrode 1 and tip 2 and has silver palladium baked on the outer peripheral surface. Equipped with an insulating tube, 4 is electrode 1, chip 2
, a guide nozzle for fixing the insulating tube 3 to the torch body metal fitting 6, 6 a nozzle for preventing the conductive part from being exposed to the outside, and 7 a working gas for constricting the plasma arc and cooling the tip.
前記絶縁管３に導体８を焼付した形状例として帯状８−
１、チドリ状８−２等があり、良好なアークスタート、
およびパイロットアークを発生させることができだ。An example of a shape in which the conductor 8 is baked onto the insulating tube 3 is a strip shape 8-
1. Plover-shaped 8-2 etc., good arc start,
and can generate a pilot arc.
発明の効果
以上のように本発明は絶縁体３に導体８を具備すること
により常に安定したパイロットアークを発生させること
が出来ると共に切断性能、消耗部品の低下をさせること
はなく切断を行なうことができ、その効果は犬なるもの
である。Effects of the Invention As described above, by providing the conductor 8 in the insulator 3 of the present invention, a stable pilot arc can be generated at all times, and cutting can be performed without deteriorating cutting performance or consumable parts. Yes, the effect is like a dog.
第１図は本発明の一実施例を示すプラズマ切断用トーチ
の要部断面図、第２図は従来のプラズマ切断用トーチの
要部断面図、第３図は一般的なプラズマ切断装置の構１
戊図である。
１・・・・・・電極、２・・・・・チップ、３・・・・
絶縁管、４・・・・・・ガイドノズル、６・・・・・・
ノズル、６・・・・トーチ本体金具、了・・・・・・作
動ガス、８・・・・・・導体。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名１−
電 擾
２−＋ツブ
５−・−ノズル
１： −トーチ本体金具
７−作動ガス
８−導体
Ｆ３−Ｉ−帯
８−ｚ−一一＋ドゾ
第 １ 図
第２図FIG. 1 is a cross-sectional view of a main part of a plasma cutting torch showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part of a conventional plasma cutting torch, and FIG. 1
It is a diagram. 1... Electrode, 2... Chip, 3...
Insulation tube, 4...Guide nozzle, 6...
Nozzle, 6...Torch body metal fittings, Complete...Working gas, 8...Conductor. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
Electric power 2-+Tub 5-・-Nozzle 1: -Torch body metal fitting 7-Working gas 8-Conductor F3-I-Band 8-Z-11+Double 1st Figure 2
Claims (1)
縮するチップと、前記チップと前記電極を連結する絶縁
管を有し、作動ガスを前記絶縁管の内外面に流す構造を
有するプラズマ切断用トーチにおいて、前記絶縁管の外
周表面にアルミニウム合金あるいは銀パラジウム等の電
導体を付着させたプラズマ切断用トーチ。A plasma cutting device having a structure in which an electrode having an electron emitting surface is placed in the center to constrict a plasma flow, an insulating tube connecting the tip and the electrode, and a working gas flowing to the inner and outer surfaces of the insulating tube. A plasma cutting torch in which a conductor such as aluminum alloy or silver palladium is attached to the outer peripheral surface of the insulating tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62309008A JPH01150477A (en) | 1987-12-07 | 1987-12-07 | Torch for plasma cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62309008A JPH01150477A (en) | 1987-12-07 | 1987-12-07 | Torch for plasma cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01150477A true JPH01150477A (en) | 1989-06-13 |
Family
ID=17987785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62309008A Pending JPH01150477A (en) | 1987-12-07 | 1987-12-07 | Torch for plasma cutting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01150477A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008521170A (en) * | 2004-11-16 | 2008-06-19 | ハイパーサーム インコーポレイテッド | Plasma arc torch with electrode with internal flow path |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62124079A (en) * | 1985-11-21 | 1987-06-05 | Matsushita Electric Ind Co Ltd | Plasma arc cutting torch |
-
1987
- 1987-12-07 JP JP62309008A patent/JPH01150477A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62124079A (en) * | 1985-11-21 | 1987-06-05 | Matsushita Electric Ind Co Ltd | Plasma arc cutting torch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008521170A (en) * | 2004-11-16 | 2008-06-19 | ハイパーサーム インコーポレイテッド | Plasma arc torch with electrode with internal flow path |
| US8680425B2 (en) | 2004-11-16 | 2014-03-25 | Hypertherm, Inc. | Plasma arc torch having an electrode with internal passages |
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