JPS601898Y2 - Reverse polarity plasma welding torch - Google Patents
Reverse polarity plasma welding torchInfo
- Publication number
- JPS601898Y2 JPS601898Y2 JP9685578U JP9685578U JPS601898Y2 JP S601898 Y2 JPS601898 Y2 JP S601898Y2 JP 9685578 U JP9685578 U JP 9685578U JP 9685578 U JP9685578 U JP 9685578U JP S601898 Y2 JPS601898 Y2 JP S601898Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- gas
- reverse polarity
- welding torch
- nozzle
- 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
Landscapes
- Arc Welding In General (AREA)
Description
【考案の詳細な説明】
この考案は、逆極性プラズマ溶接トーチに関するもので
ある。[Detailed Description of the Invention] This invention relates to a reverse polarity plasma welding torch.
第１図に従来の逆極性プラズマ溶接トーチの概略構造を
示す。FIG. 1 shows a schematic structure of a conventional reverse polarity plasma welding torch.
図において、１は電極、２はノズル、３はシールドカバ
ー、４はガス整流器で、その内周面、即ち電極１側にガ
ス流路が形成されている。In the figure, 1 is an electrode, 2 is a nozzle, 3 is a shield cover, and 4 is a gas rectifier, each of which has a gas flow path formed on its inner peripheral surface, that is, on the electrode 1 side.
上記トーチを用いて溶接する場合には、電極１と母材８
の間にアーク７が形成される。When welding using the above torch, electrode 1 and base material 8
An arc 7 is formed between them.
このアーク７はシールドガス６により大気から保護され
、またプラズマガス５の供給により維持される。This arc 7 is protected from the atmosphere by a shielding gas 6 and is maintained by supplying plasma gas 5.
この場合、ガス整流器４から流出するプラズマガス５は
電極１の先端部に沿って流れるため、アーク７は電極１
の先端部に集中して発生するようになる。In this case, since the plasma gas 5 flowing out from the gas rectifier 4 flows along the tip of the electrode 1, the arc 7
It begins to occur concentrated at the tip.
このため、電極１先端部での発熱が多くなり、その部分
が溶融して電極が短寿命となる。Therefore, more heat is generated at the tip of the electrode 1, which melts and shortens the life of the electrode.
この考案は上記の欠点を除去するためになされたもので
、電極の先端を球面状にするとともに、プラズマガスの
流路がノズル内面側に位置するようにガス整流器を形成
することにより、電極の長寿命化を図ることができる逆
極性プラズマ溶接トーチを提供することを目的とする。This idea was made in order to eliminate the above-mentioned drawbacks, and by making the tip of the electrode spherical and forming a gas rectifier so that the plasma gas flow path is located on the inner surface of the nozzle, the electrode tip is made spherical. An object of the present invention is to provide a reverse polarity plasma welding torch that can have a long service life.
以下この考案を図示の実施例に基づいて説明する。This invention will be explained below based on the illustrated embodiments.
第３図及び第４図はこの考案の一実施例を示すもので、
１は先端が球面状に形成された電極、２はこの電極１の
外周に同軸状に配設されたノズル、３はシールドカバー
、４はガス整流器で、その外周面にプラズマガスの流路
４ａを形成されて上記電極１とノズル２の間に配置され
ている。Figures 3 and 4 show an embodiment of this invention.
1 is an electrode with a spherical tip, 2 is a nozzle coaxially arranged around the outer circumference of the electrode 1, 3 is a shield cover, and 4 is a gas rectifier, with a plasma gas flow path 4a on its outer circumferential surface. is formed between the electrode 1 and the nozzle 2.
なお、８は母材である。In addition, 8 is a base material.
この考案に係る逆極性プラズマ溶接トーチは上記のよう
に構成されており、電極１の先端部とこれと対向するノ
ズル２の内面がなめらかな球面状となっているので、プ
ラズマガス５はガス整流器４の流路４ａをノズル２内面
に沿って流れた後整流器４から流出−ノズル２内面に沿
って流れる。The reverse polarity plasma welding torch according to this invention is constructed as described above, and the tip of the electrode 1 and the inner surface of the nozzle 2 facing the same have a smooth spherical shape, so that the plasma gas 5 flows through the gas rectifier. After flowing through the flow path 4a of No. 4 along the inner surface of the nozzle 2, it flows out from the rectifier 4 and flows along the inner surface of the nozzle 2.
このプラズマガス５により電極１と母材８の間に形成さ
れたアーク７が維持される。The arc 7 formed between the electrode 1 and the base material 8 is maintained by this plasma gas 5.
この場合、アーク７はプラズマガス５がノズル２内面に
沿って流れるとともに電極１の先端が球面状に形成され
ているため、電極１先端部全面に亘って形成される。In this case, the arc 7 is formed over the entire surface of the tip of the electrode 1 because the plasma gas 5 flows along the inner surface of the nozzle 2 and the tip of the electrode 1 is formed in a spherical shape.
従って、電極１の先端部が局部的に過熱状態となって部
分的に溶融するおそれがなくなり、電極１の寿命が飛躍
的に改善されて従来の用倍程度の長寿命となる。Therefore, there is no possibility that the tip of the electrode 1 will be locally overheated and partially melted, and the life of the electrode 1 will be dramatically improved and will be about twice as long as the conventional one.
第１図は従来の逆極性プラズマ溶接トーチの断面図、第
２図は同トーチにおけるガス整流器の正面図、第３図は
この考案に係る逆極性プラズマ溶接トーチの一実施例を
示す一部破断状態の側面図、第４図は同トーチにおける
ガス整流器の正面図である。
１・・・・・・電極、２・・・・・・ノズル、３・・・
・・・シールドカバー、４・・・・・・ガス整流器、４
ａ・・・・・・ガス流路、５・・・・・・プラズマガス
、６・・・・・・シールドガス、７・・・・・・アーク
、８・・・・・・母材。
なお、図中同一符号は同一または相当部分を示す。Fig. 1 is a sectional view of a conventional reverse polarity plasma welding torch, Fig. 2 is a front view of a gas rectifier in the same torch, and Fig. 3 is a partially broken view showing an embodiment of the reverse polarity plasma welding torch according to this invention. A side view of the state, and FIG. 4 is a front view of the gas rectifier in the same torch. 1...electrode, 2...nozzle, 3...
...Shield cover, 4...Gas rectifier, 4
a... Gas flow path, 5... Plasma gas, 6... Shield gas, 7... Arc, 8... Base material. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
軸状に配設されたノズル２と、このノズル２の内面に沿
ってプラズマガス５を流すようなガス流路４ａを形成さ
れて上記電極１とノズル２の間に配設されたガス整流器
４とを具備してなる逆極性プラズマ溶接トーチ。An electrode 1 having a spherical tip, a nozzle 2 disposed coaxially around the outer periphery of the electrode 1, and a gas flow path 4a for flowing plasma gas 5 along the inner surface of the nozzle 2 are formed. A reverse polarity plasma welding torch comprising a gas rectifier 4 disposed between the electrode 1 and the nozzle 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9685578U JPS601898Y2 (en) | 1978-07-14 | 1978-07-14 | Reverse polarity plasma welding torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9685578U JPS601898Y2 (en) | 1978-07-14 | 1978-07-14 | Reverse polarity plasma welding torch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5517622U JPS5517622U (en) | 1980-02-04 |
| JPS601898Y2 true JPS601898Y2 (en) | 1985-01-19 |
Family
ID=29031130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9685578U Expired JPS601898Y2 (en) | 1978-07-14 | 1978-07-14 | Reverse polarity plasma welding torch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS601898Y2 (en) |
-
1978
- 1978-07-14 JP JP9685578U patent/JPS601898Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5517622U (en) | 1980-02-04 |
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