CN105195875A - Welding gun of lockhole effect TIG deep penetration welding - Google Patents
Welding gun of lockhole effect TIG deep penetration welding Download PDFInfo
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- CN105195875A CN105195875A CN201410263803.6A CN201410263803A CN105195875A CN 105195875 A CN105195875 A CN 105195875A CN 201410263803 A CN201410263803 A CN 201410263803A CN 105195875 A CN105195875 A CN 105195875A
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Abstract
The embodiment of the invention discloses a welding gun of lockhole effect TIG deep penetration welding. The welding gun comprises a welding gun body. The top of the welding gun body is fixedly connected with a welding gun outer cylinder through a locking nut. A shaft sleeve is arranged in the welding gun outer cylinder. A conducting rod is arranged in the shaft sleeve. The bottom of the conducting rod is connected with an electrode head through a mounting seat. A tungsten electrode is arranged in the electrode head through a locking positioning sleeve and a positioning nut. The outer wall of the electrode head is further sleeved with an inner sleeve and a first air nozzle. The first air nozzle is sleeved with a second air nozzle. The second air nozzle is connected with the welding gun body through the locking nut. By the adoption of the welding gun, deep penetration welding of the lockhole effect can be achieved, welding efficiency is greatly improved, meanwhile even if a welding plate to be welded is quite thick, beveling is not needed, and filler wires are not needed either, so that the welding cost is greatly saved, and the welding gun has huge industrial application value.
Description
Technical field
The present invention relates to a kind of welding technology field, particularly relate to a kind of lockhole effect TIG deep penetration welding welding gun.
Background technology
TIG welds (TungstenInertGasarcWelding), and be also called inert gas tungsten electrode protection weldering, it is a kind of welding method of maturation, is widely used at the welding field of carbon steel, stainless steel, aluminium alloy and nonferrous materials.Common TIG welding arc stablility, welding quality is good, but its fusion penetration is more shallow, and speed of welding is comparatively slow, and efficiency is lower.As for stainless steel or titanium alloy, a general welding penetration is maximum can only reach about 4mm.Therefore, TIG weldering is generally used for the bottom penetration bead backing welding of plate sheet welding or heavy wall important component.
For middle thickness (>4mm) sheet metal, then need the groove 1 opening respective angles in junction according to actual plate thickness, and carry out multi-layer multi-pass welding and just can complete, as shown in Figure 1.As square groove, once welding just can whole through weldings, thus greatly improve welding efficiency, significantly reduce the man-hour of steel plate bevel and welding, and can or with little filling wlding, greatly will reduce welding cost.Therefore, the efficient TIG welding method developing large fusion penetration has very large benefit for raising welding efficiency, minimizing welding material expenditure.
Form the welding of " lockhole " effect, at present general realization in the weldering of Laser Welding, electron beam welding and plasma.Plasma weldering is the arc welding method that uniquely can realize " lockhole " effect, but it needs compression arc, and welding energy density is very high, and welding gun designs complexity, needs often to safeguard, the change of welding parameters is very sensitive, welding cost is high.
Summary of the invention
Technical problem to be solved by this invention is, a kind of lockhole effect TIG deep penetration welding welding gun is provided, the deep penetration welding of lockhole effect can be realized, welding efficiency is improved greatly, even if simultaneously soldered welding plate is very thick, also without the need to bevel, also without the need to filler wire, thus greatly saved welding cost, there is huge industrial application value.
In order to solve the problems of the technologies described above, embodiments provide a kind of lockhole effect TIG deep penetration welding welding gun, comprise welding gun body, described welding gun bodies top is fixedly connected with welding gun urceolus by locking nut; Described welding gun urceolus is built with axle sleeve; Described axle sleeve is built with conducting rod; The bottom of described conducting rod is connected with electrode tip by mount pad; By locking positioning cover and setscrew nut, tungsten electrode is installed in described electrode tip; Described electrode tip outer wall also overlaps inner sleeve and the first valve; Described first valve overcoat has the second valve; Described second valve is connected with described welding gun body by locking nut.
For the improvement of technique scheme, described welding gun body, welding gun urceolus, conducting rod, electrode tip and tungsten electrode adopt coaxial configuration.
For the further improvement of technique scheme, described axle sleeve and inner sleeve form inside and outside double-deck circulation channel.
For the further improvement of technique scheme, between described inner sleeve and the first valve, be provided with seal washer.
For the further improvement of technique scheme, described seal washer adopts the heat insulation material of high-temperature insulation.
For the further improvement of technique scheme, described axle sleeve and inner sleeve all adopt plastic material.
For the further improvement of technique scheme, described first valve adopts ceramic material; Described second valve adopts metal or ceramic material.
Implement the embodiment of the present invention, there is following beneficial effect:
(1) lockhole deep penetration welding can be realized;
(2) welding efficiency is high;
(3) welding cost is saved;
(4) there is huge industrial application value.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form inappropriate limitation of the present invention, in the accompanying drawings:
Schematic diagram to cut deal bevel multi-layer multi-pass welding in the prior art that Fig. 1 provides for the embodiment of the present invention;
The structural representation of a kind of lockhole effect TIG deep penetration welding welding gun that Fig. 2 provides for the embodiment of the present invention;
The structure sectional view of a kind of lockhole effect TIG deep penetration welding welding gun that Fig. 3 provides for the embodiment of the present invention;
The Inlet and outlet water of a kind of lockhole effect TIG deep penetration welding welding gun that Fig. 4 provides for the embodiment of the present invention and air inlet schematic diagram.
detailed description of the invention
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
As shown in Figures 2 and 3, lockhole effect TIG deep penetration welding welding gun of the present invention, comprises welding gun body 1, and described welding gun body 1 top is fixedly connected with welding gun urceolus 2 by locking nut 10; Described welding gun urceolus 2 is built with axle sleeve 3, and described axle sleeve adopts plastic material, as the passage of flow of cooling water; Described axle sleeve 3 is built with conducting rod 4, and the top of described conducting rod 4, for connecting external power source, provides power source to whole welding gun; The bottom of described conducting rod 4 is connected with electrode tip 5 by mount pad 11, and described mount pad 11 is conductive material, namely after described conducting rod 4 switches on power, is then connected by mount pad 11 and electrode tip 5.Be provided with tungsten electrode 6 by locking positioning cover 12 and setscrew nut 13 in described electrode tip 5, described tungsten electrode 6 adopts overstriking to design, and it is the maximum electric current by more than 1000A when welding, the axis of its axis being parallel and described welding gun urceolus 2.Electrode tip 5 outer wall also overlaps inner sleeve 7 and the first valve 8, and described first valve 8 overcoat has the second valve 9, and described second valve 9 is connected with described welding gun body 1 by locking nut 10.Wherein, described inner sleeve 7 adopts plastic material too, and described first valve 8 adopts ceramic material, and the second valve 9 adopts metal or ceramic material.Wherein then heat resistance is better for the valve of ceramic material, and the material of the two can be determined according to the actual requirements, if temperature drift in welding process, then Ceramics valve is then better.
Meanwhile, described welding gun body 1, welding gun urceolus 2, conducting rod 4 and electrode tip 5 adopt the structural design of concentric column, are different from existing like product completely.
In addition, described axle sleeve 3 and inner sleeve 7 form inside and outside double-deck circulation channel, as shown in Figure 3, within it flow thus carry out cooling processing to described welding gun for cooling water.
For the improvement of technique scheme, between described inner sleeve 7 and the first valve 8, be provided with seal washer 14, play the effect of better tightness.Sealing packing ring 14 adopts the heat insulation material of high-temperature insulation, such as base human relations organic fiber or ceramic fibre material.
Be more than that the structure of lockhole effect TIG deep penetration welding welding gun of the present invention is illustrated, now its operation principle specifically described:
At use lockhole effect TIG deep penetration welding welding gun of the present invention, first need to pass into inert gas-argon gas, argon gas enters in described axle sleeve 3 from the import of protection gas, enter from the A of the passage at its place, and enter described electrode tip 5 from described axle sleeve 3 with the positioning sleeve B of electrode tip 5, after entering described electrode tip 5, argon gas is then divided into two-way: it is inner that (1) enters described welding gun body 1 from the longitudinal hole C of electrode tip 5, air is therein remained during lockhole effect TIG deep penetration welding welding gun described in press fit, and spray from the space between described tungsten electrode 6 and inner sleeve 7, (2) tip of electrode tip 5 is arrived from the space between electrode tip 5 and tungsten electrode 6, and spray from the aperture of the surrounding at the tip of electrode tip 5, then spray from described welding gun body 1 tip behind the D place of the first valve 8 and the second valve 9 guiding, thus protection welding arc and molten bath.
Shown in composition graphs 4, described lockhole effect TIG deep penetration welding welding gun passes into cooling water, water enters axle sleeve 3 in from liquid circulation mouth from outer tank under the control of cooling recirculation system and welding system controller, namely from figure, cooling water inlet enters, then inner sleeve 7 is arrived enter electrode tip 5 in the passage of axle sleeve 3 after, internal layer water circulation a is formed at inner sleeve 7 inner surface, the outer surface that through hole in inner sleeve 7 arrives inner sleeve 7 forms outer water circulation b, in, after outer two-layer water circulation takes away the heat at welding gun body 1 tip place, successively by electrode tip 5 and axle sleeve 3 reflow tank.
During welding, conducting rod 4 connecting welding power cathode, workpiece connecting welding positive source to be welded, electric current arrives electrode tip 5 and tungsten electrode 6, at the tip of tungsten electrode 6 and surface of the work coating-forming voltage by conducting rod 4.When welding starts, electric arc is excited by high-frequency arc strike, in welding process, there is provided electric current by the source of welding current and control, to maintain welding arc and to produce lockhole effect, the maximum weld electric current that lockhole effect TIG deep penetration welding welding gun of the present invention is passed through can reach more than 1000A, the carbon steel of energy through welding 3 ~ 16mm thickness, stainless steel, titanium and titanium alloys, the sheet metal such as zirconium and alloy thereof, it is a kind of Novel welding gun that can realize the welding of lockhole effect, its lockhole formed is that " nature " is formed, because its electric arc is without compression, the main arc force by big current formation and liquid metals static pressure, surface tension balance is formed.This lockhole is that the energy of high concentration and pressure are formed, and in molten bath, liquid metal stream can not cause metal loss round " lockhole " flowing.The existence of " lockhole " makes welding penetration to increase widely, is the Perfected process of welding slab, particulate metal.
Lockhole effect TIG deep penetration welding welding gun of the present invention is that the place by forming hole bottom molten bath increases arc pressure wittingly, these aspect on, the lower surface of workpiece has been worn out in the bottom of electric arc, just can be formed " lockhole " when heat inputs enough penetration workpiece, arc-plasma can gush.Act on arc-plasma by the arc pressure of long-range navigation magnetically-actuated, up hill and dale electromagnetization.The energy density of TIG weldering is not enough to produce suitable kickback pressure, therefore, different with electron beam welding lockhole from Laser Welding, and it is long-range navigation magnetically-actuated that TIG welds lockhole, is integrated with kickback pressure and stagnation pressure.
During welding, lockhole must keep open, and arcing gas is through workpiece, and therefore lockhole TIG is that single-run welding completes.Because arcing gas is discharged by back of work, therefore weld and seldom occur molten bath disturbance and pore.Compared with welding with big current general T IG, often there is the defects such as molten bath disturbance, weld seam cavity, vermicular porosity in big current TIG, main cause is the incomplete excretion of arcing gas, just can eliminate these defects by strengthening welding current.
Above the technical scheme that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth the principle of the embodiment of the present invention and embodiment, the explanation of above embodiment is only applicable to the principle helping to understand the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the embodiment of the present invention, detailed description of the invention and range of application all will change, and in sum, this description should not be construed as limitation of the present invention.
Claims (7)
1. a lockhole effect TIG deep penetration welding welding gun, comprises welding gun body, it is characterized in that:
Described welding gun bodies top is fixedly connected with welding gun urceolus by locking nut;
Described welding gun urceolus is built with axle sleeve;
Described axle sleeve is built with conducting rod;
The bottom of described conducting rod is connected with electrode tip by mount pad;
By locking positioning cover and setscrew nut, tungsten electrode is installed in described electrode tip;
Described electrode tip outer wall also overlaps inner sleeve and the first valve;
Described first valve overcoat has the second valve;
Described second valve is connected with described welding gun body by locking nut.
2. lockhole effect TIG deep penetration welding welding gun according to claim 1, is characterized in that:
Described welding gun body, welding gun urceolus, conducting rod, electrode tip and tungsten electrode adopt coaxial configuration.
3. lockhole effect TIG deep penetration welding welding gun according to claim 1, is characterized in that:
Described axle sleeve and inner sleeve form inside and outside double-deck circulation channel.
4. lockhole effect TIG deep penetration welding welding gun according to claim 1, is characterized in that:
Seal washer is provided with between described inner sleeve and the first valve.
5. lockhole effect TIG deep penetration welding welding gun according to claim 4, is characterized in that:
Described seal washer adopts the heat insulation material of high-temperature insulation.
6. lockhole effect TIG deep penetration welding welding gun according to claim 1, is characterized in that:
Described axle sleeve and inner sleeve all adopt plastic material.
7. lockhole effect TIG deep penetration welding welding gun according to claim 1, is characterized in that:
Described first valve adopts ceramic material;
Described second valve adopts metal or ceramic material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410263803.6A CN105195875B (en) | 2014-06-13 | 2014-06-13 | Lockhole effect TIG deep penetration welding welding guns |
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| CN201410263803.6A CN105195875B (en) | 2014-06-13 | 2014-06-13 | Lockhole effect TIG deep penetration welding welding guns |
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| CN105195875A true CN105195875A (en) | 2015-12-30 |
| CN105195875B CN105195875B (en) | 2018-07-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107824943A (en) * | 2017-09-22 | 2018-03-23 | 广东福维德焊接股份有限公司 | A kind of depth melts arc-welding double welding gun welding procedure |
| CN108161183A (en) * | 2017-11-08 | 2018-06-15 | 上海锅炉厂有限公司 | A kind of container longitudinal joint of 1G downhand positions or circumferential weld composite tungsten electrode inert gas-shielded arc welding welding procedure |
| CN108515256A (en) * | 2018-07-06 | 2018-09-11 | 郑州机械研究所有限公司 | A kind of gouge pipette tips for automatic carbon arc type gas gouging |
| CN109834376A (en) * | 2017-11-28 | 2019-06-04 | 宁波方太厨具有限公司 | A kind of automatic adjustment welding gun head tungsten needle height locating device |
| CN117324733A (en) * | 2023-10-26 | 2024-01-02 | 广东福维德焊接股份有限公司 | Deep fusion welding gun structure |
| CN109967844B (en) * | 2017-12-28 | 2024-05-10 | 唐山开元焊接自动化技术研究所有限公司 | Double-electrode argon arc welding gun |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109834376A (en) * | 2017-11-28 | 2019-06-04 | 宁波方太厨具有限公司 | A kind of automatic adjustment welding gun head tungsten needle height locating device |
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| CN109967844B (en) * | 2017-12-28 | 2024-05-10 | 唐山开元焊接自动化技术研究所有限公司 | Double-electrode argon arc welding gun |
| CN108515256A (en) * | 2018-07-06 | 2018-09-11 | 郑州机械研究所有限公司 | A kind of gouge pipette tips for automatic carbon arc type gas gouging |
| CN117324733A (en) * | 2023-10-26 | 2024-01-02 | 广东福维德焊接股份有限公司 | Deep fusion welding gun structure |
| CN117324733B (en) * | 2023-10-26 | 2024-05-24 | 广东福维德焊接股份有限公司 | Deep fusion welding gun structure |
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Denomination of invention: Lock hole effect TIG deep penetration welding gun Effective date of registration: 20230407 Granted publication date: 20180717 Pledgee: Guangdong Provincial Bank of Communications Co.,Ltd. Pledgor: GUANGDONG FUWEIDE WELDING Co.,Ltd. Registration number: Y2023440000044 |
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Application publication date: 20151230 Assignee: Heshan Fuweide Intelligent Equipment Co.,Ltd. Assignor: GUANGDONG FUWEIDE WELDING Co.,Ltd. Contract record no.: X2023440000017 Denomination of invention: Lock hole effect TIG deep penetration welding gun Granted publication date: 20180717 License type: Common License Record date: 20230710 |
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