JPH0315150Y2 - - Google Patents
Info
- Publication number
- JPH0315150Y2 JPH0315150Y2 JP1984074187U JP7418784U JPH0315150Y2 JP H0315150 Y2 JPH0315150 Y2 JP H0315150Y2 JP 1984074187 U JP1984074187 U JP 1984074187U JP 7418784 U JP7418784 U JP 7418784U JP H0315150 Y2 JPH0315150 Y2 JP H0315150Y2
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- anode
- spray gun
- plasma
- plasma spray
- 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.)
- Expired
Links
- 239000007921 spray Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
Description
【考案の詳細な説明】
技術分野
本考案は金属又は金属化合物のワイヤ或いは微
粉末をプラズマジエツトによつて加熱し、半溶融
状態として物体の表面に吹付け密着被覆するプラ
ズマ溶射ガンに関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a plasma spray gun that heats a wire or fine powder of a metal or metal compound with a plasma jet and sprays it in a semi-molten state onto the surface of an object to closely coat it.
従来の技術
一般にプラズマ溶射ガンは、第２図に縦断面図
を示すように、太線で囲む陰極部Ａと、点線で囲
む陽極部Ｂとが、絶縁材料よりなる絶縁部Ｃを介
して一体に組まれた構成となつている。上記陰極
部Ａは、負電源が接続される水導出管１ａが設け
られた陰極誘導体１と、この陰極誘導体１の下面
中央に基部が固定された陰極ホルダー２と、この
陰極ホルダー先端に基部が嵌込み又はロー付けに
よつて固定された陰極３とによつて構成されてい
る。また陽極部Ｂは、正電源が接続される水導入
管４ａが設けられた陽極誘導体４と、この陽極誘
導体４の下部にフロントカバー５によつて下縁部
が押圧固定され、ノズル孔６ａが形成された陽極
６とによつて構成されている。上記陽極６のノズ
ル孔６ａの上方は拡大されており、上記陰極ホル
ダー２および陰極３を囲繞している。また上記水
導出入管１ａ，４ａは溶射ガン内の冷却水路を介
して連通している。また、絶縁部Ｃにはプラズマ
を発生するガス導入管７が設けられ、ガスインジ
エクター８を介して、接線方向に吹込まれるアル
ゴン、窒素、水素等のガスが上記陰極ホルダー２
および陰極３の周囲を旋回してノズル孔６ａより
噴出される。この噴出されるガスは、陰陽極３，
６間に発生するアーク９によつてプラズマジエツ
ト１０となつて、原料供給管１１からキヤリアガ
スによつて供給される金属粉末１２を半溶融状態
として溶射する。また、上記各ブロツクの間に
は、Ｏリング１３…が設けられ、液密に組立てら
れている。2. Description of the Related Art In general, in a plasma spray gun, as shown in a longitudinal cross-sectional view in FIG. It has a structured structure. The cathode part A includes a cathode dielectric 1 provided with a water outlet pipe 1a to which a negative power source is connected, a cathode holder 2 having a base fixed to the center of the lower surface of this cathode dielectric 1, and a base at the tip of the cathode holder. The cathode 3 is fixed by fitting or brazing. The anode part B includes an anode dielectric 4 provided with a water introduction pipe 4a to which a positive power source is connected, a lower edge of which is pressed and fixed by a front cover 5 to the lower part of the anode dielectric 4, and a nozzle hole 6a. and an anode 6 formed therein. The upper part of the nozzle hole 6a of the anode 6 is enlarged and surrounds the cathode holder 2 and the cathode 3. The water inlet/outlet pipes 1a, 4a communicate with each other via a cooling water channel within the thermal spray gun. Further, a gas inlet pipe 7 for generating plasma is provided in the insulating part C, and a gas such as argon, nitrogen, hydrogen, etc., which is tangentially blown into the cathode holder 2 through a gas injector 8.
The liquid then swirls around the cathode 3 and is ejected from the nozzle hole 6a. This ejected gas is transmitted to the cathode and anode 3,
The metal powder 12 supplied by the carrier gas from the raw material supply pipe 11 is thermally sprayed in a semi-molten state by the arc 9 generated during the spraying process. Furthermore, O-rings 13 are provided between each of the blocks, and the blocks are assembled in a liquid-tight manner.
なお図中符号１４，１５はセツトボルトで、セ
ツトボルト１５と陰極誘導体１とは絶縁物１６に
よつて絶縁されている。 Note that reference numerals 14 and 15 in the figure are set bolts, and the set bolt 15 and the cathode dielectric 1 are insulated by an insulator 16.
従来技術の問題点
ところで、上記従来のプラズマ溶射ガンは、陰
極および陽極が固定されており、相互の距離を変
えることが出来ず、陰極３が消耗すると、WC又
はＷ−Th等からなる高価な陰極を新品と交換し
なければならず、電極の交換は不経済であるばか
りでなく、交換に要する時間的損失も大であり、
また熟練を要する作業を伴い、また、アーク９
は、一定の側に発生するので、プラズマの発生が
一方に片寄り、平均して発生しない不都合があつ
た。Problems with the prior art By the way, in the above-mentioned conventional plasma spray gun, the cathode and anode are fixed, and the distance between them cannot be changed, and when the cathode 3 wears out, an expensive The cathode must be replaced with a new one, and replacing the electrode is not only uneconomical, but also requires a great deal of time loss.
It also involves work that requires skill, and arc 9
Since the plasma is generated on a fixed side, there is a problem that the plasma generation is biased to one side and the plasma is not generated evenly.
考案の目的
本考案は上記の事情に鑑み、陰極と陽極との距
離が調整自在で、陰極が消耗してもそのまま、或
いは必要に応じて加工して再使用することが出
来、かつ発生するプラズマが安定していて片寄る
ことのないプラズマ溶射ガンを提供することを目
的とするものである。Purpose of the invention In view of the above circumstances, the present invention is designed to allow the distance between the cathode and the anode to be adjusted, so that even if the cathode is worn out, it can be used as is, or it can be processed and reused as necessary. The object of the present invention is to provide a plasma spray gun that is stable and does not shift to one side.
考案の構成
本考案のプラズマ溶射ガンは、金属のワイヤ或
いは微粉末等を溶射するプラズマ溶射ガンにおい
て、陽極に対する上下位置が移動自在で、かつ回
転駆動される陰極を具備したものである。Structure of the Invention The plasma spray gun of the present invention is a plasma spray gun for spraying metal wire or fine powder, and is equipped with a cathode that is movable vertically relative to the anode and that is rotationally driven.
考案の具体的説明
第１図は、本考案に係るプラズマ溶射ガンの一
実施例を示すもので、第２図と同一部分には同一
符号を付してその説明を省略する。Detailed Description of the Invention FIG. 1 shows an embodiment of a plasma spray gun according to the invention, and the same parts as those in FIG. 2 are given the same reference numerals and the explanation thereof will be omitted.
第１図に縦断面図を示すように、陰極誘導体２
１の中央には、空部２２が設けられている。上記
陰極誘導体２１には上記空部を挿通するととも
に、上下に貫通して陰極２３が設けられている。
この陰極２３の上記空部２２の上下の上記陰極誘
導体２１と当接する部分には、Ｏリング２４，２
４が設けられ、摺動自在かつ液密に上記陰極２３
を保持している。上記空部２２には水銀が充填さ
れ、水導出管１ａからの電流を上記陰極２３に通
すようになつている。上記陰極２３の上記陰極誘
導体２１上方への突出部は、ベース２５にベアリ
ング２６を介して回動自在に取付けられている。
ベアリング２６の上部の陰極２３にはプーリ２７
が取付けられ、マイクロモータ２８によつて回転
駆動されるようになつている。上記ベース２５、
ベアリング２６等は、陰極２３と電気的に絶縁さ
れている。また上記陰極２３はプーリ２７への取
付ねじ等をゆるめることによつて、上下方向に移
動出来るようになつている。 As shown in FIG. 1, the cathode dielectric 2
A hollow part 22 is provided in the center of 1. A cathode 23 is provided in the cathode dielectric 21 so as to pass through the cavity and vertically.
O-rings 24, 2
4 is provided, and the cathode 23 is slidably and liquid-tightly connected to the cathode 23.
is held. The cavity 22 is filled with mercury, and the current from the water outlet pipe 1a is passed through the cathode 23. A projecting portion of the cathode 23 above the cathode dielectric 21 is rotatably attached to the base 25 via a bearing 26 .
A pulley 27 is attached to the cathode 23 above the bearing 26.
is attached and is rotationally driven by a micromotor 28. The above base 25,
The bearing 26 and the like are electrically insulated from the cathode 23. Further, the cathode 23 can be moved in the vertical direction by loosening a screw attached to the pulley 27.
本考案の具体的作用および効果
本考案に係るプラズマ溶射ガンは、上記の構成
を有するため、陰極２３を上下することによつて
陰極２３と陽極６との距離が自由に調整され、ま
た、陰極２３は溶射中回転駆動される。Specific functions and effects of the present invention Since the plasma spray gun according to the present invention has the above-described configuration, the distance between the cathode 23 and the anode 6 can be freely adjusted by moving the cathode 23 up and down, and the distance between the cathode 23 and the anode 6 can be adjusted freely. 23 is rotationally driven during thermal spraying.
したがつて上記陰陽極２３，６の間に印加され
る電圧の調整が出来る。また、陰極が消耗して
も、陰極２３の降下が可能なかぎり陰陽極２３，
６間の距離を一定に調整することにより、そのま
ま使用出来る。さらに、陰極２３の先端が消耗変
形した場合には、簡単に取外して加工して再使用
することが出来る。また、溶射中陰極を回転させ
ているので、アーク９は、一方に片寄ることな
く、したがつてプラズマを平均して発生させるこ
とが出来る。 Therefore, the voltage applied between the cathode and anode 23 and 6 can be adjusted. Furthermore, even if the cathode is exhausted, as long as the cathode 23 can be lowered, the cathode 23,
By adjusting the distance between 6 to a constant value, it can be used as is. Furthermore, if the tip of the cathode 23 becomes deformed due to wear and tear, it can be easily removed, processed, and reused. Further, since the cathode is rotated during thermal spraying, the arc 9 is not biased to one side, and therefore plasma can be generated evenly.
なお、上記陰極２３に、これを上下する駆動機
構を設け、常時、電流が一定となるように陰極２
３の位置を調整することも可能である。 The cathode 23 is provided with a drive mechanism that moves it up and down so that the current is always constant.
It is also possible to adjust the position of 3.
また、原料粉末１２は、原料供給管１１によつ
て横からプラズマジエツトに供給されているが、
陰極２３を縦に貫通する孔２９を設け、この孔２
９からキヤリアガスによつて供給してもよい。 Further, the raw material powder 12 is supplied to the plasma jet from the side through the raw material supply pipe 11.
A hole 29 is provided vertically through the cathode 23, and this hole 2
9 may be supplied by carrier gas.
以上述べたように、本考案に係るプラズマ溶射
ガンは、陰陽極間の距離の調整を自在に行なうこ
とが出来るので、頻繁に陰極を交換する必要がな
く、高価な陰極の使用寿命を延ばし、作業能率を
高めるとともに、陰極の回転によりプラズマを平
均して発生させるので、均一な被覆が可能となる
などの長所を有する。 As described above, the plasma spray gun according to the present invention can freely adjust the distance between the cathode and anode, so there is no need to frequently replace the cathode, extending the useful life of the expensive cathode, This method has advantages such as increasing work efficiency and uniform coating because plasma is generated evenly by rotating the cathode.
第１図は本考案に係るプラズマ溶射ガンの一実
施例を示す縦断面図、第２図は、従来のプラズマ
溶射ガンの一例を示す縦断面図である。
１ａ……水導出管（負電源）、４……陽極誘導
体、４ａ……水導入管（正電源）、６……陽極、
６ａ……ノズル孔、２１……陰極誘導体、２２…
…空部、２３……陰極、２４……Ｏリング、２５
……ベース、２６……ベアリング、２７……プー
リ、２８……マイクロモータ。
FIG. 1 is a longitudinal sectional view showing an embodiment of a plasma spray gun according to the present invention, and FIG. 2 is a longitudinal sectional view showing an example of a conventional plasma spray gun. 1a...Water outlet tube (negative power source), 4...Anode derivative, 4a...Water introduction tube (positive power source), 6...Anode,
6a... Nozzle hole, 21... Cathode derivative, 22...
...Vacancy, 23...Cathode, 24...O ring, 25
... Base, 26 ... Bearing, 27 ... Pulley, 28 ... Micromotor.
Claims (1)
マ溶射ガンにおいて、陽極に対する上下位置が移
動自在で、かつ回転駆動される陰極を具備してな
るプラズマ溶射ガン。 A plasma spray gun for spraying metal wire or fine powder, etc., which is equipped with a cathode that is movable vertically relative to the anode and that is rotationally driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7418784U JPS60186048U (en) | 1984-05-21 | 1984-05-21 | plasma spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7418784U JPS60186048U (en) | 1984-05-21 | 1984-05-21 | plasma spray gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60186048U JPS60186048U (en) | 1985-12-10 |
| JPH0315150Y2 true JPH0315150Y2 (en) | 1991-04-03 |
Family
ID=30614249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7418784U Granted JPS60186048U (en) | 1984-05-21 | 1984-05-21 | plasma spray gun |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60186048U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3305185B2 (en) * | 1996-02-14 | 2002-07-22 | プラズマ技研工業株式会社 | Plasma spraying equipment |
| CA2571099C (en) * | 2005-12-21 | 2015-05-05 | Sulzer Metco (Us) Inc. | Hybrid plasma-cold spray method and apparatus |
| JP6895813B2 (en) * | 2017-06-08 | 2021-06-30 | 東京エレクトロン株式会社 | Plasma spraying head, plasma spraying device and plasma spraying method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS494634U (en) * | 1972-04-13 | 1974-01-16 |
-
1984
- 1984-05-21 JP JP7418784U patent/JPS60186048U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS494634U (en) * | 1972-04-13 | 1974-01-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60186048U (en) | 1985-12-10 |
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