CN2351236Y - Double-concave diaphragm hollow cathode welding gun - Google Patents
Double-concave diaphragm hollow cathode welding gun Download PDFInfo
- Publication number
- CN2351236Y CN2351236Y CN 98249088 CN98249088U CN2351236Y CN 2351236 Y CN2351236 Y CN 2351236Y CN 98249088 CN98249088 CN 98249088 CN 98249088 U CN98249088 U CN 98249088U CN 2351236 Y CN2351236 Y CN 2351236Y
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- China
- Prior art keywords
- cathode
- hollow cathode
- concave diaphragm
- welding gun
- double concave
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- Expired - Lifetime
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Abstract
The utility model relates to a welding gun with a double concave diaphragm and a hollow cathode, which has a structure that a water inflow pipe, a water outflow pipe, and an air pipe are connected with a gun body; the hollow cathode is installed on the lower part of the gun body; the double concave diaphragm with a small hole is installed on the head of the cathode; heating elements are arranged around the cathode. Since the double concave diaphragm with a small hole is installed inside the cathode for compressing electric arcs, the energy density of the electric arcs can meet the requirement for melting a weld seam, and the cathode can not be melted through by the electric arcs or deform. The heating elements enable the cathode obtain an ability of electron heat emission and capability of arcing for many times, so that weld of a titanium alloy plate can be ensured to be performed successfully, and the problem of spatter as welding a titanium alloy air bottle and a titanium alloy storage tank can be solved radically.
Description
The utility model relates to welder, particularly carries out the hollow cathode welding gun of arc welding in a vacuum.
According to the data introduction, the former Soviet Union began to carry out the hollow cathode Research on Welding Technology in 1969, and the eighties initial stage applies in the former Soviet Union.The hollow tungsten electrode rifle that the domestic unit that has carries out theoretical research by Russian Bao Man engineering college's initial stage carried out the theory study of hollow cathode welding method since 1993.
The hollow cathode welding equipment comprises the hollow cathode welding gun, arc ignition system, the adjustment of argon flow amount, control system, vacuum system and the source of welding current.Wherein the hollow cathode welding gun is the major technique key of this new welding technology.The hollow cathode welding gun adopts the tantalum pipe as negative electrode, feeds argon gas and carry out striking and welding from the tantalum pipe, and carry out work in vacuum chamber.
The shortcoming of Russia's welding gun is: it is processed by bar, the cost height, and the narrow meshed diaphragm of head is plate shaped, negative electrode is influenced working life by the electric arc penetration easily.
Shortcoming and defect, particularly plane cathode that the purpose of this utility model promptly is to exist at above-mentioned prior art are studied improved double concave diaphragm hollow cathode welding gun and provide a kind of through us easily by the problem of electric arc penetration.
The purpose of this utility model is achieved through the following technical solutions:
A kind of double concave diaphragm hollow cathode welding gun, on its rifle body (16), be connected to water inlet pipe (11), outlet pipe (12), tracheae (13), in rifle body (16) bottom hollow negative electrode (101) is housed, narrow meshed double concave diaphragm (103) is housed at the head of negative electrode (101).Also be provided with heating element heater (102) on every side at negative electrode (101).
The utlity model has following advantage and effect:
1. owing to be provided with narrow meshed double concave diaphragm, solved negative electrode by the problem of penetration in negative electrode inside.
2. owing to around negative electrode, be provided with the ability that heating element heater makes the heat emission of negative electrode electron gain, can repeatedly stablize the starting the arc.
The drawing of accompanying drawing is described as follows:
Fig. 1 is a hollow cathode welder schematic diagram
Fig. 2 is a straight pipe type hollow cathode welding gun schematic diagram
Fig. 3 is the double concave diaphragm hollow cathode welding gun structure chart through having improved
Be described further below in conjunction with drawings and Examples:
When design straight pipe type hollow cathode welding gun, we all design cooling water pipeline, gas path joint and are placed on outside the vacuum chamber, adopt slipper seal between rifle body and the vacuum-chamber wall.Play insulating requirements arc condition (high pressure of 2500V, 250KHz) under for satisfying the welding high frequency, the employing bonding way seals between insulator and water pipe, the tracheae.
Figure 1 shows that hollow cathode welder schematic diagram, the welding gun of hollow cathode shown in the figure 1 is placed in vacuum chamber 2 tops, place work piece 4 in vacuum chamber 2, the source of welding current 5 by control cabinet 7 controls is connected with workpiece 4 with hollow cathode welding gun 1 respectively by lead, and the tracheae of hollow cathode welding gun 1 is connected with argon bottle 6.
Figure 2 shows that hollow cathode welding gun schematic diagram, be connected to water inlet pipe 11, outlet pipe 12, tracheae 13 on the rifle body 16 of figure hollow core negative electrode welding gun, and be provided with insulator 14 and sealing ring 15.
Shown in Figure 3 is double concave diaphragm hollow cathode welding gun structure chart through having improved, in rifle body 16 bottoms hollow negative electrode 101 is housed, and at the head of negative electrode 101 narrow meshed double concave diaphragm 103 is set, and also is provided with heating element heater 102 around negative electrode 101.
Claims (2)
1. double concave diaphragm hollow cathode welding gun, on its rifle body (16), be connected to water inlet pipe (11), outlet pipe (12), tracheae (13), it is characterized in that: in rifle body (16) bottom hollow negative electrode (101) is housed, narrow meshed double concave diaphragm (103) is housed at the head of negative electrode (101).
2. double concave diaphragm hollow cathode welding gun according to claim 1 is characterized in that: also be provided with heating element heater (102) on every side at negative electrode (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98249088 CN2351236Y (en) | 1998-11-27 | 1998-11-27 | Double-concave diaphragm hollow cathode welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98249088 CN2351236Y (en) | 1998-11-27 | 1998-11-27 | Double-concave diaphragm hollow cathode welding gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2351236Y true CN2351236Y (en) | 1999-12-01 |
Family
ID=33993935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98249088 Expired - Lifetime CN2351236Y (en) | 1998-11-27 | 1998-11-27 | Double-concave diaphragm hollow cathode welding gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2351236Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448586C (en) * | 2005-12-20 | 2009-01-07 | 上海工程技术大学 | Adjustable arc stiffness welding gun |
| CN101658971B (en) * | 2009-08-25 | 2012-04-18 | 中国航空工业集团公司北京航空制造工程研究所 | Non-contact arc ignition welding gun for vacuum electric arc welding of hollow cathode |
-
1998
- 1998-11-27 CN CN 98249088 patent/CN2351236Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448586C (en) * | 2005-12-20 | 2009-01-07 | 上海工程技术大学 | Adjustable arc stiffness welding gun |
| CN101658971B (en) * | 2009-08-25 | 2012-04-18 | 中国航空工业集团公司北京航空制造工程研究所 | Non-contact arc ignition welding gun for vacuum electric arc welding of hollow cathode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |