JPS635882A - Mobile type plasma torch - Google Patents
Mobile type plasma torchInfo
- Publication number
- JPS635882A JPS635882A JP61149604A JP14960486A JPS635882A JP S635882 A JPS635882 A JP S635882A JP 61149604 A JP61149604 A JP 61149604A JP 14960486 A JP14960486 A JP 14960486A JP S635882 A JPS635882 A JP S635882A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- electrode
- nozzle
- magnets
- holder
- 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
- 230000005291 magnetic effect Effects 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 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、磁場を利用して電極表面上でアークを移動さ
せる移行型プラズマ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 transfer plasma torch that utilizes a magnetic field to move an arc over an electrode surface.
従来の技術
従来の移行型プラズマトーチはもっばら旋回気流を利用
している。この従来の移行型プラズマトーチを用いた金
属切断において、精密切断を行なおうとする場合、ノズ
ルの口径を小さく絞る必要がある。しかし、設定電流に
対してノズル口径を絞りすぎると、ダブルアークなどの
不正放電が生じ、トーチの破損をきたす。BACKGROUND OF THE INVENTION Conventional transfer plasma torches utilize swirling airflow extensively. In metal cutting using this conventional transfer type plasma torch, if precision cutting is to be performed, it is necessary to reduce the diameter of the nozzle. However, if the nozzle diameter is narrowed too much for the set current, incorrect discharge such as double arcing will occur, leading to damage to the torch.
このため、設定切断電流を決めると、ノズル口径の下限
はおのずと決まってくる。−方板厚の厚い金属を切断す
る場合、切断電流を大きくする必要があるが、この場合
でも切断幅の狭い精密切断が要求されることが多い。Therefore, once the set cutting current is determined, the lower limit of the nozzle diameter is automatically determined. - When cutting thick square metal, it is necessary to increase the cutting current, but even in this case precision cutting with a narrow cutting width is often required.
発明が解決しようとする問題点
上記従来の移行型プラズマトーチではプラズマアークの
安定性の問題から、ノズル口径を絞ってプラズマアーク
ジェットのエネルギ密度を上昇させることが非常に困難
であった。Problems to be Solved by the Invention In the conventional transfer type plasma torch described above, it is extremely difficult to increase the energy density of the plasma arc jet by narrowing the nozzle diameter due to the problem of stability of the plasma arc.
問題点を解決するための手段及び作用
本発明は上記の０とにかんがみなされたもので、移行型
プラズマトーチ内部のアークの安定性を向上させ、ダ・
プルアークなどの不正放電を防止すると共に、ノズルを
出たあとのアークプラズマの膨張を抑制し、高エネルギ
密度のアークプラズマジェットを実現させることができ
る移行型プラズマトーチを提供しようとするものである
。Means and operation for solving the problems The present invention has been made in view of the above points, and improves the stability of the arc inside the transitional plasma torch, and
The present invention aims to provide a transfer type plasma torch that can prevent illegal discharge such as pull arc, suppress the expansion of arc plasma after exiting the nozzle, and realize a high-energy density arc plasma jet.
すなわち、従来の旋回気流を利用した構成に加え、磁場
によるアークの安定性を付加してアークの安定性を大幅
に向上しようとするものであり、その構成は、磁場を利
用して電極表面上でアークを移動させる移行型プラズマ
トーチにおいて、電極の軸方向両側２個所に、マグネッ
トを同軸状に配置した構成となっておシ、上記両マグネ
ットにより電極及びアークノズルの軸心に沿って強力な
平行磁場が形成される。そしてこの平行磁場により電極
表面よシ放面されるアークプラズマジェットの膨張が抑
制される。In other words, in addition to the conventional configuration that utilizes swirling airflow, it attempts to significantly improve the stability of the arc by adding arc stability using a magnetic field. In the transfer type plasma torch, which moves the arc at two positions on both sides of the electrode in the axial direction, magnets are arranged coaxially. A parallel magnetic field is created. This parallel magnetic field suppresses the expansion of the arc plasma jet emitted from the electrode surface.
実施例 本発明の実施例を図面に基づいて説明する。Example Embodiments of the present invention will be described based on the drawings.
図中１は円筒状のホルダであり、このホルダ１の先端に
電極２が固着しである。３Ｖ′ｉホルダ１を囲繞し、か
つホルダ１の先端側へ延長されたアークノズルである。In the figure, 1 is a cylindrical holder, and an electrode 2 is fixed to the tip of this holder 1. 3V'i This is an arc nozzle that surrounds the holder 1 and extends toward the tip side of the holder 1.
上記ホルダ１の内側にはホルダ１内に冷却水を導く水路
管４が同軸状に設けである。上記電極２の軸方向上流側
と下流側に強力な環状のマグネット５，６が同軸状に設
けられている。上記軸方向内側のマグネット５は水路管
４の先端に固着されておシ、また外側のマグネット６は
アークノズル３の外側で、かつノズルギャップ７の内側
に固着されている。A water pipe 4 for guiding cooling water into the holder 1 is coaxially provided inside the holder 1. Strong annular magnets 5 and 6 are coaxially provided on the upstream and downstream sides of the electrode 2 in the axial direction. The axially inner magnet 5 is fixed to the tip of the water pipe 4, and the outer magnet 6 is fixed to the outside of the arc nozzle 3 and inside the nozzle gap 7.
８はホルダ１とアークノズル３０間に設けられた作動ガ
ス旋回装置であり、アークノズル３の内側に流入してき
た作動ガスはこの旋回装置ｇで旋回流とまってアークノ
ズル３より流出されるようになっている。Reference numeral 8 denotes a working gas swirling device installed between the holder 1 and the arc nozzle 30, and the working gas flowing into the inside of the arc nozzle 3 is stopped in a swirling flow by this swirling device g, and then flows out from the arc nozzle 3. It has become.
上記構成において、電極２の軸方向上流側と下流側の２
個のマグネット５，６によシ、電極２及びアークノズル
３の軸心に沿って強力な平行磁場９が形成され、る。−
方電極２への通電によって電極２０表面上シプラズマア
ークが発生し、これがアークノズル３よシアーク柱１０
となって放電される。このときのアーク柱１０は上記両
マグネット５．６による平行磁場９によって磁気的に安
定される。そしてアークノズル３を出たあとのアーク柱
９は軸方向の磁場によりその膨張が抑制される。In the above configuration, two axially upstream and downstream sides of the electrode 2
A strong parallel magnetic field 9 is formed along the axes of the electrode 2 and the arc nozzle 3 by the magnets 5 and 6. −
By energizing the direction electrode 2, a shear plasma arc is generated on the surface of the electrode 20, and this arc is transferred from the arc nozzle 3 to the shear arc column 10.
and is discharged. At this time, the arc column 10 is magnetically stabilized by the parallel magnetic field 9 generated by both the magnets 5.6. After exiting the arc nozzle 3, the expansion of the arc column 9 is suppressed by the axial magnetic field.
なお上記実施例では、軸方向上流側のマグネット５は水
路管４の先端に固着した例を示したが、水路管を強磁性
体にて構成することにより、第２図に示すように、軸方
向上流側のマグネット５′を水路管４′の基端部に設け
ることができる。In the above embodiment, the magnet 5 on the upstream side in the axial direction was fixed to the tip of the water pipe 4, but by constructing the water pipe from a ferromagnetic material, as shown in FIG. A magnet 5' on the upstream side in the direction can be provided at the base end of the water pipe 4'.
この場合、マグネット５′は電極２から軸方向に遠く離
れた位置で、ホルダ１′の外側に設けることができるこ
とにより、トーチ先端部の寸法に関係なくマグネット５
′の大きさを設定できる。In this case, the magnet 5' can be provided outside the holder 1' at a position far away from the electrode 2 in the axial direction, so that the magnet 5' can be provided at a position far away from the electrode 2 in the axial direction.
′ can be set.
またトーチ先端より外部への磁束の漏れが少なくなシ、
鉄粉などの金属粉がトーチヘッド部に付着するのを防止
できる。In addition, there is less leakage of magnetic flux from the tip of the torch to the outside.
Metal powder such as iron powder can be prevented from adhering to the torch head.
なお上記両実施例におけるマグネッ）５．５’。Note that the magnet in both of the above embodiments is 5.5'.
６は永久磁石あるいは電磁コイルのどちらでもよい。6 may be either a permanent magnet or an electromagnetic coil.
発明の効果
本発明によれば、作動ガス旋回方式による従来のアーク
安定効果に加えて、磁場によるアークの安定化が行なわ
れ、極めて高いアークの安定性を確保することができ、
従ってアークノズ／Ｌ／３０口径を絞っても不正放電が
起こることがなくなシ、アークのプラズマジェットの高
エネルギ密度化が実現できる。またアークノズル３を出
たあとのアークプラズマジェットの膨張が電極２の軸方
向に平行の磁場によって抑制され、プラズマトーチを切
断機として用いる場合、切断母材の切断幅を縮小できる
。Effects of the Invention According to the present invention, in addition to the conventional arc stabilizing effect by the working gas swirling method, the arc is stabilized by the magnetic field, and extremely high arc stability can be ensured.
Therefore, even if the arc nozzle/L/30 diameter is narrowed down, no illegal discharge will occur, and a high energy density of the arc plasma jet can be realized. Further, the expansion of the arc plasma jet after exiting the arc nozzle 3 is suppressed by the magnetic field parallel to the axial direction of the electrode 2, and when the plasma torch is used as a cutting machine, the cutting width of the cutting base material can be reduced.
第１図は本考案の実施例を示す一部破断構成説明図、第
２図は他の実施例を示す一部破断構成説明図である。
１けホルダ、２は電極、５．５′、６はマグネット。FIG. 1 is a partially broken-away structural explanatory diagram showing an embodiment of the present invention, and FIG. 2 is a partially broken-away structural explanatory diagram showing another embodiment. 1 holder, 2 is electrode, 5.5', 6 is magnet.
Claims (1)
型プラズマトーチにおいて、電極２の軸方向両側２個所
に、マグネット５、５′、６を同軸状に配置したことを
特徴とする移行型プラズマトーチ。A transition type plasma torch that uses a magnetic field to move an arc on the surface of an electrode 2, characterized in that magnets 5, 5', and 6 are coaxially arranged at two locations on both sides of the electrode 2 in the axial direction. plasma torch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61149604A JPS635882A (en) | 1986-06-27 | 1986-06-27 | Mobile type plasma torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61149604A JPS635882A (en) | 1986-06-27 | 1986-06-27 | Mobile type plasma torch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS635882A true JPS635882A (en) | 1988-01-11 |
Family
ID=15478836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61149604A Pending JPS635882A (en) | 1986-06-27 | 1986-06-27 | Mobile type plasma torch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS635882A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990004486A1 (en) * | 1988-10-20 | 1990-05-03 | Kabushiki Kaisha Komatsu Seisakusho | Method of working a plate in a plasma cutting machine and plasma torch |
| KR100434116B1 (en) * | 2001-07-04 | 2004-06-04 | 주식회사 윈텍산업 | A hollow plasma torch equipped with super ceramic magnets |
| KR100486939B1 (en) * | 2002-03-26 | 2005-05-03 | 재단법인서울대학교산학협력재단 | Non-Transferred Type Plasma Torch With Step-Shaped Nozzle |
-
1986
- 1986-06-27 JP JP61149604A patent/JPS635882A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990004486A1 (en) * | 1988-10-20 | 1990-05-03 | Kabushiki Kaisha Komatsu Seisakusho | Method of working a plate in a plasma cutting machine and plasma torch |
| JPH02155575A (en) * | 1988-10-20 | 1990-06-14 | Komatsu Ltd | Plate machining method and plasma torch for plasma cutting machine |
| EP0394483A1 (en) * | 1988-10-20 | 1990-10-31 | Kabushiki Kaisha Komatsu Seisakusho | Method of working a plate in a plasma cutting machine and plasma torch |
| US5202544A (en) * | 1988-10-20 | 1993-04-13 | Kabushiki Kaisha Komatsu Seisakusho | Method of machining plate materials with a plasma cutter and plasma torch |
| KR100434116B1 (en) * | 2001-07-04 | 2004-06-04 | 주식회사 윈텍산업 | A hollow plasma torch equipped with super ceramic magnets |
| KR100486939B1 (en) * | 2002-03-26 | 2005-05-03 | 재단법인서울대학교산학협력재단 | Non-Transferred Type Plasma Torch With Step-Shaped Nozzle |
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