CN1065420A - New-type non-vacuum electronic beam connects method and welding torch - Google Patents
New-type non-vacuum electronic beam connects method and welding torch Download PDFInfo
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- CN1065420A CN1065420A CN 91101989 CN91101989A CN1065420A CN 1065420 A CN1065420 A CN 1065420A CN 91101989 CN91101989 CN 91101989 CN 91101989 A CN91101989 A CN 91101989A CN 1065420 A CN1065420 A CN 1065420A
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Abstract
New-type non-vacuum electronic beam connects method and welding torch, belong to non-vacuum electronic beam and connect method and welding torch, feature of the present invention is with the plasma arc that the plasma gun that is installed in final stage vacuum chamber lower end produces electron beam to be drawn out to the atmosphere from vacuum chamber to weld, the negative electrode of realizing the plasma gun of said method is hollow, and this rifle also can be drawn laser beam; Send wire from cathode aperture, powder or other material are used for aspects such as welding, built-up welding, heating and heat treatment.
Description
The present invention relates to non-vacuum electronic beam and connect method and corresponding welding torch.
Non-vacuum electronic beam is that the high-power high-energy-density electron beam that will produce in the vacuum electronic rifle is drawn out in the atmosphere, and the workpiece that is placed in the atmosphere is welded.Non-vacuum electronic beam has overcome the restriction of vacuum chamber, can weld large-scale or the elongated workpiece, also is convenient to the batch rapid welding of finding, and application surface is wider.But non-vacuum electronic beam has two key problem in technology: the one, and electron beam can not fall too lowly by the indoor vacuum that is drawn out to back gun chamber in the atmosphere of vacuum electronic rifle; The 2nd, energy loss can not be too big before electron beam arrived workpiece by vacuum electronic rifle chamber by outlet, and energy density can not be fallen lowly excessively.Adopted the electron beam lead-out process of multiple raising gun chamber vacuum abroad: 1, outside the electron beam fairlead, cause a depression, reduce atmospheric molecule flows into the rifle chamber from fairlead air current sealed method with high velocity air.2, the low or indissoluble material of heating evaporation pressure, its steam enter cooled and solidified behind the fairlead, improve the Re Saifa of gun chamber vacuum.3, adopt annular low-velocity electron beam bombardment fairlead, stop atmospheric molecule to flow into the electron bombard method of gun chamber.Effect is all not ideal.
For two key problem in technology non-vacuum electronic beam solve better, invented New-type non-vacuum electronic beam and connect method and welding torch.
New-type non-vacuum electronic beam connects method, utilize electron beam to make main thermal source, electron beam enters in the atmosphere by the segmentation vacuum chamber from the high vacuum gun chamber and welds, and feature of the present invention is to be used in plasma arc that the plasma gun of final stage vacuum chamber bottom surface produces electron beam is drawn out to the atmosphere from vacuum chamber welds.
Be used for the plasma gun that New-type non-vacuum electronic beam connects method, form by upper cutting gun [4], lower gun body [7], negative electrode [8], plasma nozzle [9].Upper cutting gun [4] shape such as up big and down small funnel suitable for readingly connect with final stage vacuum chamber bottom surface [2] by the insulated enclosure pad, and end opening is installed negative electrode [8], the top of negative electrode [8] is cylinder, the bottom is a round platform, and external diameters such as the big end of round platform and cylinder are made with tungsten, zirconium, tantalum.Lower gun body [7] upper end connects with upper cutting gun [4] by the insulated enclosure pad, and the lower end connects plasma gun with plasma nozzle [9] and is screwed on final stage vacuum chamber bottom surface [2] by ring flange.Electron gun, upper cutting gun [4], lower gun body [7], negative electrode [8], plasma nozzle [9] are concentric, plasma gun water flowing cooling.The feature of this plasma gun is that negative electrode [8] is for hollow.Hollow shape is the big up and small down round taper hole in top, and the bottom is that cylindrical hole or hollow shape are cylindrical.This plasma gun also can be drawn laser beam, send wire, powder or other material to be used for aspects such as welding, built-up welding, heating and heat treatment from cathode aperture.
Plasma arc has following three effects:
1, isoionic pump efficiency should.This pump efficiency should have two: the one, and the air-flow swabbing effect, it improves the vacuum in the vacuum chamber; The 2nd, heat plug effect, it improves the vacuum of vacuum chamber, and its effect is the most remarkable.Isoionic electric current and air-flow are big more, and pump efficiency should act on also big more.Isoionic pump efficiency should be equivalent to the comprehensive of external air current sealed method, Re Saifa and annular low-velocity electron blast technique.
2, isoionic hollow passageway.The temperature of the plasma arc of compression can reach about 30000 ℃ at the center.According to the gas philosophy, whenever temperature raises 273 ℃, plasma volume increases and is twice 1/100 when isoionic density is room temperature in the time of can calculating 30000 ℃ roughly.Electron beam will be very little by so similar vacuum passage scattering.And the reduction of the loss of its energy and energy density also is very little, can adopt lower accelerating potential.
3, isoionic adjection.Plasma argon or helium-atmosphere can be protected welding pool well, and isoionic thermal source has not only improved the efficiency of heating surface, and the rational temperature gradient also helps the shaping of face of weld, and the atomic weight of helium is little, can reduce the scattering of electron beam, and is more suitable
Electron beam and plasma arc are not mechanically to superpose, series connection simply, but the chief is respectively got in organically combination.Plasma arc has been drawn electron beam well, and electron beam heats, compressed plasma arc.Therefore, electron beam and plasma arc are combined into the desirable thermal source for New-type non-vacuum electronic beam.
The unit power welding penetration that New-type non-vacuum electronic beam connects method is big, and welding seam deep width ratio is big, and unit fusion penetration heat input is little.Table 1 has been listed with the U.S., Japan and the French typically non-vacuum electronic beam of up-to-date steel and has been connect data contrast situation.
| Country origin | Accelerating potential KV | Beam power KW | Speed of welding m/min | Operating distance mm | Welding penetration mm | Weld width mm middle part | Weld penetration compares the middle part | The fusion penetration heat input KI/mm of unit 2 | Unit power fusion penetration mm/kw |
| Beautiful | 165 | 10 | 0.9 | 15 | 4 | 2.1 | 1.9:1 | 0.17 | 0.40 |
| Method | 65 | 6.5 | 1 | 6 | 7 | 1.4 | 5:1 | 0.05 | 1.08 |
| Day | 250 | 20 | 0.6 | 12 | 16 | 4 | 4:1 | 0.13 | 0.80 |
| In | 100 | 7.5 | 0.9 | 8 | 16.5 | 2 | 8.2:1 | 0.03 | 2.20 |
New-type non-vacuum electronic beam connects method, and the accelerating potential of electron beam adopts 100KV, and line is 50-100mA, and the distance of workpiece to the electron beam fairlead shortened in the helium protection as far as possible, and plasma current is about 100A.
Fig. 1 connects schematic diagram for New-type non-vacuum electronic beam.[1] is electron beam; [2] be final stage vacuum chamber bottom surface; [3] be the insulated enclosure pad; [4] be upper cutting gun; [5] be the insulated enclosure pad; [6] be ring flange; [7] be lower gun body; [8] be negative electrode; [9] be the plasma nozzle; [10] be workpiece; [11] be plasma arc; [12] be the protection gas hood; [13] be screw.
Claims (4)
1, New-type non-vacuum electronic beam connects method, utilize electron beam to make main thermal source, electron beam enters the atmosphere by the segmentation vacuum chamber from vacuum electronic rifle chamber and welds, and feature of the present invention is with the plasma arc that the plasma gun that is installed in final stage vacuum chamber bottom surface produces electron beam to be drawn out to the atmosphere from vacuum chamber to weld.
2, be used for the plasma gun that New-type non-vacuum electronic beam connects method, by upper cutting gun [4], lower gun body [7], negative electrode [8], plasma nozzle [9] is formed, upper cutting gun [4] shape such as up big and down small funnel, suitable for readingly connect with final stage vacuum chamber bottom surface by the insulated enclosure pad, end opening is installed negative electrode [8], the top of negative electrode [8] is cylinder, the bottom is a round platform, external diameter tungsten such as the big end of round platform and cylinder, zirconium, tantalum is made, lower gun body [7] upper end connects with upper cutting gun [4] by the insulated enclosure pad, the lower end connects with plasma nozzle [9], plasma gun is screwed on final stage vacuum chamber bottom surface [2] by ring flange, electron gun, upper cutting gun [4], lower gun body [7], negative electrode [8], plasma nozzle [9] plasma gun water flowing cooling with one heart, feature of the present invention are that negative electrode [8] is for hollow.
3, plasma gun according to claim 2, the hollow shape of its negative electrode [8] are the big up and small down round taper hole in top, and the bottom is a cylindrical hole.
4, plasma gun according to claim 2, the hollow shape of its negative electrode [8] is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101989 CN1065420A (en) | 1991-03-29 | 1991-03-29 | New-type non-vacuum electronic beam connects method and welding torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101989 CN1065420A (en) | 1991-03-29 | 1991-03-29 | New-type non-vacuum electronic beam connects method and welding torch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1065420A true CN1065420A (en) | 1992-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91101989 Pending CN1065420A (en) | 1991-03-29 | 1991-03-29 | New-type non-vacuum electronic beam connects method and welding torch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1065420A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996015871A1 (en) * | 1994-11-24 | 1996-05-30 | Coventry University | Enhanced laser beam welding |
| CN104227252A (en) * | 2014-09-10 | 2014-12-24 | 北京工业大学 | Device and method for co-axial and composite welding by adopting center negative pressure plasma arc and electron beam |
| CN104227191A (en) * | 2014-09-10 | 2014-12-24 | 北京工业大学 | Low-back-pressure penetration electric arc welding device and method |
| CN104308343A (en) * | 2014-09-10 | 2015-01-28 | 北京工业大学 | Central negative-pressure arc welding device and method |
| CN104308342A (en) * | 2014-09-10 | 2015-01-28 | 北京工业大学 | Central pulsation negative-pressure arc welding device and method |
| CN114200504A (en) * | 2021-12-13 | 2022-03-18 | 中国核动力研究设计院 | Electron beam generator for simulating beta radiation source and testing method |
| CN117733305A (en) * | 2024-02-20 | 2024-03-22 | 四川华束科技有限公司 | Sealed-off type electron gun and non-vacuum electron beam welding robot |
-
1991
- 1991-03-29 CN CN 91101989 patent/CN1065420A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996015871A1 (en) * | 1994-11-24 | 1996-05-30 | Coventry University | Enhanced laser beam welding |
| AU686475B2 (en) * | 1994-11-24 | 1998-02-05 | Coventry University | Enhanced laser beam welding |
| US5866870A (en) * | 1994-11-24 | 1999-02-02 | Coventry University | Enhanced laser beam welding |
| CN104308342A (en) * | 2014-09-10 | 2015-01-28 | 北京工业大学 | Central pulsation negative-pressure arc welding device and method |
| CN104227191A (en) * | 2014-09-10 | 2014-12-24 | 北京工业大学 | Low-back-pressure penetration electric arc welding device and method |
| CN104308343A (en) * | 2014-09-10 | 2015-01-28 | 北京工业大学 | Central negative-pressure arc welding device and method |
| CN104227252A (en) * | 2014-09-10 | 2014-12-24 | 北京工业大学 | Device and method for co-axial and composite welding by adopting center negative pressure plasma arc and electron beam |
| CN104227191B (en) * | 2014-09-10 | 2016-04-20 | 北京工业大学 | A kind of low back pressure penetrating arc welder and method |
| CN104308343B (en) * | 2014-09-10 | 2016-08-10 | 北京工业大学 | Central negative pressure arc-welding apparatus and method |
| CN104308342B (en) * | 2014-09-10 | 2017-04-05 | 北京工业大学 | Center pulsed negative pressure arc-welding apparatus and method |
| CN114200504A (en) * | 2021-12-13 | 2022-03-18 | 中国核动力研究设计院 | Electron beam generator for simulating beta radiation source and testing method |
| CN114200504B (en) * | 2021-12-13 | 2024-04-30 | 中国核动力研究设计院 | Electron beam generator for simulating beta radiation source and testing method |
| CN117733305A (en) * | 2024-02-20 | 2024-03-22 | 四川华束科技有限公司 | Sealed-off type electron gun and non-vacuum electron beam welding robot |
| CN117733305B (en) * | 2024-02-20 | 2024-04-26 | 四川华束科技有限公司 | Sealed-off type electron gun and non-vacuum electron beam welding robot |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |