CN2801366Y - Non-circular section nozzle for narrow-gap non-consumable electrode gas shielded welding gun - Google Patents
Non-circular section nozzle for narrow-gap non-consumable electrode gas shielded welding gun Download PDFInfo
- Publication number
- CN2801366Y CN2801366Y CNU2005200700522U CN200520070052U CN2801366Y CN 2801366 Y CN2801366 Y CN 2801366Y CN U2005200700522 U CNU2005200700522 U CN U2005200700522U CN 200520070052 U CN200520070052 U CN 200520070052U CN 2801366 Y CN2801366 Y CN 2801366Y
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- Prior art keywords
- nozzle
- welding gun
- welding
- gas shielded
- section
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- 238000003466 welding Methods 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010937 tungsten Substances 0.000 abstract description 6
- 229910052721 tungsten Inorganic materials 0.000 abstract description 6
- 229910002110 ceramic alloy Inorganic materials 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000010953 base metal Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Arc Welding In General (AREA)
Abstract
The utility model belongs to the welding equipment class, purpose-built one kind is used for the non-circular cross-section nozzle of narrow clearance non-consumable electrode gas shielded arc welding welder. The upper end of the nozzle is cylindrical, threads connected with a welding gun are arranged on the inner side of the cylinder, and the cross section of the lower end of the nozzle is in a track-track shape or an oval shape so as to be convenient for deep groove welding. In order to prevent the edge of the nozzle from being too close to the tungsten electrode to affect the gas flow and to prevent arcing between the tungsten electrode and the nozzle, one side of the short axis side of the nozzle is chamfered at an angle to form an open nozzle. The material of the nozzle is ceramic or copper alloy, and the inside and the outside of the nozzle are sprayed with non-conductive ceramic materials. The nozzle can ensure that the edge of the groove is well melted when the narrow-gap deep groove is welded.
Description
Technical field
The utility model belongs to the welding equipment class, refers in particular to a kind of noncircular cross section nozzle that is used for narrow gap non-consumable gas shielded arc welding welding gun, relates in particular to the welding gun that is used for narrow gap non-consumable gas shielded arc welding.
Background technology
Non-melt pole inert gas-shielded arc welding (TIG) is one of welding method commonly used during industry produces; but not welding is made up of the source of welding current, inert gas and welding gun etc., and welding gun is made up of nozzle, ignition tip, electrode holder, non-melt electrode, switch, handle etc. again.A rational gas shielded arc welding nozzle, it is rational in infrastructure except requiring, use light, prior is exactly to require it that good protection effect can be provided.Analyze theoretically, structure of nozzle should be able to guarantee to cause stable, large-area laminar flow, so just can reach best protection effect.Therefore, from the angle analysis of nozzle arrangements, any factor that is unfavorable for causing laminar flow all will be avoided when design.The quality of jet expansion form is a marginal ring that guarantees to form laminar flow, and common jet expansion form has cylindrical shape, and convergent contour and divergent contour, the cross section of these three kinds of shapes all are circular.
Though the nozzle guard of circular cross-section is respond well, be applicable to the occasion of great majority welding.But when the non-melt pole inert gas-shielded arc welding in big thickness, narrow gap, will run into because the difficulty that jet size considerable influence gap size further reduces.And in strong weld technology such as the big narrow gap of thickness, the size of welded gaps and the thickness of slab of welding have certain mathematical relationship, if the gap of welding can not meet the demands, strong requirement such as so just do not reach.In addition, existing all nozzle tungsten electrodes all are to be on the center of circle of nozzle, so just bring difficulty to the good fusing to I type groove base metals when narrow gap welding connects.Therefore the nozzle of existing circular cross-section does not satisfy the requirement of strong weld technology such as the narrow gap of big thickness.
Summary of the invention
The purpose of this utility model provides a kind of nozzle of noncircular cross section, cooperates special-purpose non-melt pole inert gas-shielded arc welding welding gun, to solve an above-mentioned difficult problem.
The purpose of this utility model realizes like this:
A kind of noncircular cross section nozzle that is used for narrow gap non-consumable gas shielded arc welding welding gun; the upper end of its nozzle is a column type; columniform inboard is provided with the screw thread that is connected with welding gun, and the cross section of the lower end of nozzle is track and field runway shape or ellipse, welds so that go deep into groove.For the distance of the edge that prevents nozzle and tungsten electrode too recent photo ring gas flow, and produce electric arc between tungsten electrode and the nozzle, the angle of a side chamfer with the minor axis limit of this nozzle forms open nozzle.The material of nozzle is pottery or the non-conductive ceramic material of copper alloy spraying inside and outside.
Advantage of the present utility model is: because open nozzle is in the groove of narrow gap, so do not influence the protection of gas.And the tungsten electrode that tilts can be easy to be welded to the edge of I type groove, and when guaranteeing the deep groove welding of narrow gap, bevelled edge obtains good fusing.Make the electrode of inclination of special-purpose non-melt pole inert gas protected welding gun and the gap basically identical of nozzle, prevent the striking phenomenon of the too small formation in gap between electrode and the nozzle.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the utility model structure side view
Fig. 3 is the A-A view of Fig. 2
The 1-internal thread; The 2-column type; 3-track and field runway shape; The oblique breach of 4-
The specific embodiment
As shown in Figure 1, the upper end of nozzle is column type (2), and columniform inboard is provided with internal thread (1), is used for and being connected of special-purpose non-melt pole inert gas protected welding gun.The brchypinacoid of nozzle has open oblique breach, and the cross section of the front end of nozzle is track and field runway shape (3) or ellipse.Weld so that go deep into groove.Nozzle adopts ceramic material or the ceramic coated material of copper alloy,
Claims (3)
1. noncircular cross section nozzle that is used for narrow gap non-consumable gas shielded arc welding welding gun; the upper end that it is characterized in that nozzle is column type (2); columniform inboard is provided with the screw thread (1) that is connected with welding gun, and the cross section of the lower end of nozzle is track and field runway shape or ellipse.
2. a kind of noncircular cross section nozzle that is used for narrow gap non-consumable gas shielded arc welding welding gun according to claim 1 is characterized in that the brchypinacoid of nozzle has open oblique breach.
3. a kind of noncircular cross section nozzle that is used for narrow gap non-consumable gas shielded arc welding welding gun according to claim 1 is characterized in that its material is ceramic material or the ceramic coated material of copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200700522U CN2801366Y (en) | 2005-03-23 | 2005-03-23 | Non-circular section nozzle for narrow-gap non-consumable electrode gas shielded welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200700522U CN2801366Y (en) | 2005-03-23 | 2005-03-23 | Non-circular section nozzle for narrow-gap non-consumable electrode gas shielded welding gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2801366Y true CN2801366Y (en) | 2006-08-02 |
Family
ID=36846071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200700522U Expired - Fee Related CN2801366Y (en) | 2005-03-23 | 2005-03-23 | Non-circular section nozzle for narrow-gap non-consumable electrode gas shielded welding gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2801366Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101664854B (en) * | 2009-09-24 | 2011-12-07 | 宁波明欣化工机械有限责任公司 | Welding tip holding device |
| CN102806416A (en) * | 2012-07-19 | 2012-12-05 | 樊荣 | Gas shielded welding nozzle |
| CN104289799A (en) * | 2014-09-25 | 2015-01-21 | 北京石油化工学院 | Narrow gap welding current contact nozzle with aluminum oxide insulating coating |
| CN105121085A (en) * | 2013-04-15 | 2015-12-02 | 丰田自动车株式会社 | Welding torch with upper and lower shielding gas flow and welding method using welding torch for horizontal welding |
| CN106563869A (en) * | 2016-11-04 | 2017-04-19 | 东方电气集团东方汽轮机有限公司 | Narrow-gap semi-automatic gas protection welding gun |
| CN109202236A (en) * | 2018-10-25 | 2019-01-15 | 中车青岛四方机车车辆股份有限公司 | A kind of torch nozzle and arc-welding set |
| CN110291846A (en) * | 2016-12-05 | 2019-09-27 | 海别得公司 | The asymmetric consumables of plasma arc torch |
| CN111889852A (en) * | 2020-06-29 | 2020-11-06 | 中船澄西船舶修造有限公司 | Stud welding device and method for ship spare anchor shackle fixing tool |
| WO2021027217A1 (en) * | 2019-11-13 | 2021-02-18 | 山东大学 | Gtaw welding system suitable for ultra-narrow gaps, and welding method |
-
2005
- 2005-03-23 CN CNU2005200700522U patent/CN2801366Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101664854B (en) * | 2009-09-24 | 2011-12-07 | 宁波明欣化工机械有限责任公司 | Welding tip holding device |
| CN102806416A (en) * | 2012-07-19 | 2012-12-05 | 樊荣 | Gas shielded welding nozzle |
| CN105121085A (en) * | 2013-04-15 | 2015-12-02 | 丰田自动车株式会社 | Welding torch with upper and lower shielding gas flow and welding method using welding torch for horizontal welding |
| CN105121085B (en) * | 2013-04-15 | 2017-09-08 | 丰田自动车株式会社 | Welding gun with upper and lower part protective gas stream and the welding method using the welding gun for being used for level welding |
| CN104289799A (en) * | 2014-09-25 | 2015-01-21 | 北京石油化工学院 | Narrow gap welding current contact nozzle with aluminum oxide insulating coating |
| CN106563869A (en) * | 2016-11-04 | 2017-04-19 | 东方电气集团东方汽轮机有限公司 | Narrow-gap semi-automatic gas protection welding gun |
| CN110291846A (en) * | 2016-12-05 | 2019-09-27 | 海别得公司 | The asymmetric consumables of plasma arc torch |
| CN109202236A (en) * | 2018-10-25 | 2019-01-15 | 中车青岛四方机车车辆股份有限公司 | A kind of torch nozzle and arc-welding set |
| CN109202236B (en) * | 2018-10-25 | 2020-10-30 | 中车青岛四方机车车辆股份有限公司 | Welding gun nozzle and electric arc welding device |
| WO2021027217A1 (en) * | 2019-11-13 | 2021-02-18 | 山东大学 | Gtaw welding system suitable for ultra-narrow gaps, and welding method |
| CN111889852A (en) * | 2020-06-29 | 2020-11-06 | 中船澄西船舶修造有限公司 | Stud welding device and method for ship spare anchor shackle fixing tool |
| CN111889852B (en) * | 2020-06-29 | 2022-03-08 | 中船澄西船舶修造有限公司 | Stud welding device and method for ship spare anchor shackle fixing tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |