CN102489847B - Automatic paraxial powder-feeding welding gun for alloy powder filling argon tungsten-arc welding - Google Patents

Automatic paraxial powder-feeding welding gun for alloy powder filling argon tungsten-arc welding Download PDF

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Publication number
CN102489847B
CN102489847B CN 201110376894 CN201110376894A CN102489847B CN 102489847 B CN102489847 B CN 102489847B CN 201110376894 CN201110376894 CN 201110376894 CN 201110376894 A CN201110376894 A CN 201110376894A CN 102489847 B CN102489847 B CN 102489847B
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powder feeding
powder
feeding
gun
welding
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CN 201110376894
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CN102489847A (en
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罗怡
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Chongqing University of Technology
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Chongqing University of Technology
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Abstract

The invention discloses an automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding, which comprises an argon tungsten-arc welding gun and an automatic powder feeding gun. A protection gas channel and a powder feeding channel are respectively independent. Alloy powder filling materials are fed into an arc heating area through the automatic powder feeding gun in a paraxial mode. The automatic powder feeding gun adopts a universal coupling structure so that a powder feeding incidence angle can be randomly adjusted to the optimal incidence angle for welding according to the welding technology. When the welding gun is used for carrying out the alloy powder filling argon tungsten-arc welding, stable powder feeding can be obtained in the welding process, the requirement for large powder feeding of filling welding can be met, the welding process is stable, deposition efficiency is high, and the application is wide.

Description

A kind of automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding
Technical field
The present invention relates to tungsten electrode argon arc welding gun.
Background technology
Alloy powder is filled argon tungsten-arc welding and is replaced traditional welding wire as packing material with alloy powder, and take electric arc as thermal source, the heat that utilizes electric arc to produce makes alloy powder and the material to be welded fusing of filling, forms complete weld seam, thus the connection of reaching material.This welding method can be used for the welding of various metal materials, is particularly useful for the molten solder of the light alloy materials such as aluminium alloy, magnesium alloy.Based on the process characteristic of this welding method, higher requirement has been proposed alloy powder the sending in welding process as packing material.In order to adapt to automatic soldering technique, both required in the welding process alloy powder successively stably accurately to send into the weld zone, require again alloy powder can fully melt rear filling to-be-welded region, thereby form continuous weld seam, and it is attractive in appearance to be shaped.Obviously, common tungsten argon arc welding gun can't carry out the stable filling of alloy powder to be sent to, also can't satisfy welding procedure to the requirement of powder pushing precision, powder feeding flow and welding control sequential.Therefore, when alloy powder was filled Gas Tungsten Arc Welding, common tungsten argon arc welding gun can not be as the electric arc thermal source instrument that satisfies technological requirement fully.
Common tungsten argon arc welding gun is applicable to conventional tungsten argon arc welding method, usually has following problem in the process of using this welding gun:
1, welding efficiency is low, and fusion penetration is little.Because tungsten electrode loaded current limited in one's ability, and free arc shape comparatively expands, and the power density of electric arc is less, makes the weld penetration of formation shallow, and speed of welding and deposition efficiency are not high, and production efficiency is lower when the welding cut deal.
2, without the packing material feeding system, when utilizing wire feeder to carry out the automatic feeding welding, wire feed system is comparatively complicated, and the wire feed required precision is higher; When adopting the welding of manual wire feed, wire feed inefficiency, continuous welding production that can not long weld seam.
3, owing to tungsten electrode easy scaling loss in welding process, limited to a certain extent conventional tungsten argon arc welding method and carried out high efficiency welding production.
The problems referred to above for common tungsten argon arc welding gun, fill the needs of Gas Tungsten Arc Welding in order to satisfy alloy powder, both can realize automatic welding in the urgent need to a kind of, the tungsten argon arc welding gun that again alloy powder is reliablely and stablely sent to enough loadings, supporting alloy powder are filled tungsten argon arc welding method with the lower or close deficiency that originally remedies conventional tungsten argon arc welding method that produces.
Summary of the invention
The object of the present invention is to provide and a kind ofly can realize the reliable and stable alloy powder of sending to, and make alloy powder have the tungsten argon arc automatic welding gun of higher deposition efficiency, fill the high efficiency welding procedure characteristic of tungsten argon arc welding method thereby give full play to alloy powder.
To achieve these goals, the present invention takes following technical scheme:
A kind of automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding, described welding gun is comprised of tungsten argon arc welding gun and automatic powder feeding rifle two large divisions.
Described automatic powder feeding rifle comprises powder feeding gun support, tape cable powder feeding pipe joint, powder feeding gun handle, powder feeding switch, rifle body gripping sleeve, universal joint shaft powder feeding rifle body, location gripping sleeve, powder-feeding nozzle, leads powder mouth, the directed sleeve of powder feeding pipe, powder feeding flexible pipe, control cables interface, powder feeding interface.
The powder feeding gun handle of described automatic powder feeding rifle is connected with the welding gun operating grip of tungsten argon arc welding gun by powder feeding gun support; The rifle body of described automatic powder feeding rifle is the universal joint shaft structure, it is universal joint shaft powder feeding rifle body, its front portion is connected by universal joint with the rear portion, the anterior rotation that can do with respect to the rear end all directions, the rear end of universal joint shaft powder feeding rifle body connects the powder feeding gun handle, the powder feeding flexible pipe enters universal joint shaft powder feeding rifle body to rifle body front end from the powder feeding gun handle, its rear end connects the powder feeding gun handle, lead the powder mouth and be connected to powder feeding flexible pipe exit, lead powder mouth and powder feeding flexible pipe at universal joint shaft powder feeding rifle body front end by the directed sleeve clamping of powder feeding pipe, and clamped by the location and to be locked admittedly, make and lead the powder mouth and the powder feeding flexible pipe is fixed in universal joint shaft powder feeding rifle body, the location gripping sleeve, the axis direction that powder-feeding nozzle forms; Powder-feeding nozzle is installed on location gripping sleeve front end, leads the powder mouth and is positioned the meal outlet place of powder-feeding nozzle; There is the powder feeding interface described powder feeding flexible pipe rear end, and the control cables interface is arranged on the powder feeding gun handle.
Innovation of the present invention is that paraxonic powder feeding automatic welding gun pools the stream shape with alloy powder in the mode of paraxonic powder feeding and stably sends into electric arc thermal source active region, fully form weld bead after the fusing, realize high efficiency, high-quality Metal Material Welding thereby cooperate alloy powder to fill tungsten argon arc welding method.In order to realize this goal, its key problem in technology is:
1, gas in the welding gun, powder are every vertical, namely have independently powder feeding path and protective gas path, make protective gas, alloy powder can by separately independently passage be fed to the weld zone, sending in the rifle body reduces by two kinds of fluids to greatest extent in the process phase mutual interference, thereby in welding process, have stable welding arc, also do not affect protective gas to the protection effect of the welding thermal treatment zone; Because the independence of gas, powder path in the rifle body when not using alloy powder to fill welding, is closed the powder feeding path, can make welding gun be applicable to conventional Gas Tungsten Arc Welding.
2, alloy powder is to become the mode of paraxonic to enter the weld heating district with the electric arc thermal source, this automatic powder feeding system is realized technically comparatively easily, but it is improper to arrange such as the incidence angle that powder feeding axis and arc axis form, affect easily the smooth combustion of electric arc, cause alloy powder effectively not melt and accurately filling.For the ease of adjusting the powder feeding incidence angle, powder feeding rifle body adopts Hooks coupling universal coupling as automatic powder feeding rifle joint, can make the powder feeding incidence angle make any direction according to welding procedure and regulate, be convenient to form appropriate incident angle with arc axis, obtain best powder feeding and filling effect.
3, alloy powder is sent to so that the argon gas of certain pressure is auxiliary, and under gas pressure, the powder feeding flexible pipe is offset axis direction at work easily, and it is stable affect powder feeding.Therefore, the inner powder feeding flexible pipe of powder feeding rifle body adopts copper to lead the powder mouth and derives, the directed sleeve of powder feeding pipe with the powder feeding flexible pipe with lead the powder mouth and be fixed in axis direction, and it is tight to clamp cartridge clip with the location, make powder feeding passage guiding alloy powder in the work of bearing certain air pressure, be positioned at axis direction all the time and direction does not occur depart from, thereby guaranteeing that alloy powder is stable sends to.
Under above-mentioned key technology condition, paraxonic powder feeding automatic welding gun satisfies the process requirements that alloy powder is filled Gas Tungsten Arc Welding, realizes high efficiency, high-quality Metal Material Welding.
The present invention proposes a kind of automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding, compares with conventional tungsten argon arc welding gun, and following advantage and effect are specifically arranged:
1, welding gun structure is simple, implements easily, gives full play to alloy powder and fills the high process advantage of argon arc welding method production efficiency;
2, welding arc flameholding, alloy powder also can be stablized and send to, can satisfy and fill welding procedure to the requirement of larger powder sending quantity;
3, convenient operation and control, starting the arc press button and powder feeding switch all are positioned on the torch handle, are convenient to singlehanded control powder feeding, the starting the arc, stop the sequential actions such as powder, blow-out;
4, multi-functional variation, both can make welding gun be used for alloy powder and fill Gas Tungsten Arc Welding, also as take alloy powder as the surface spraying weld that adds medium, the electric arc thermal source instrument of surface alloying, can also be used for the conventional Gas Tungsten Arc Welding occasion without packing material;
5, applicability is wide.Both be applicable to full-automatic continuous welding production, also be applicable to semi-automatic welding production.
The present invention is mainly used in the alloy powder of the metal materials such as aluminium alloy, magnesium alloy and fills tungsten argon arc welding method, also can be used for take alloy powder as the surface spraying weld that adds medium, the heat processing technique such as surface alloying.
Description of drawings
Fig. 1 is the automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding schematic appearance.
Fig. 2 is the powder feeding rifle cross-sectional view of automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding.
Among the figure: 1 tungsten electrode, 2 protection gas jets, 3 argon-arc welding gun bodies, 4 electrode caps, 5 welding gun operating grips, 6 powder feeding gun supports, 7 starting the arc press buttones, 8 tape cable tunger tube joints, 9 tape cable powder feeding pipe joints, 10 powder feeding gun handles, 11 powder feeding switches, 12 rifle body gripping sleeves, 13 universal joint shaft powder feeding rifle bodies, 14 location gripping sleeves, 15 powder-feeding nozzles, 16 are led powder mouth, the directed sleeve of 17 powder feeding pipe, 18 powder feeding flexible pipes, 19 control cables interfaces, 20 powder feeding interfaces.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.
The automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding outward appearance as shown in Figure 1.Welding gun is comprised of tungsten argon arc welding gun and automatic powder feeding rifle two large divisions, and tungsten argon arc welding gun produces the electric arc thermal source, and the automatic powder feeding rifle is that electric arc thermal source active region is automatically filled out and sent alloy powder.Starting the arc press button 7 and powder feeding switch 11 lay respectively at the up and down both sides of welding gun operating grip 5, can finish the control actions such as the starting the arc, powder feeding by one hand when making welding operation.
Tungsten argon arc welding gun adopts existing structure, and it is comprised of tungsten electrode 1, protection gas jets 2, argon-arc welding gun body 3, electrode cap 4, welding gun operating grip 5, starting the arc press button 7 and tape cable tunger tube joint 8.
Automatic powder feeding rifle cross-section structure as shown in Figure 2.Alloy powder is sent into welding gun by powder feeding interface 20, and under the gas pressure of working gas argon gas, alloy powder enters automatic powder feeding rifle body via powder feeding flexible pipe 18.The rifle body is the universal joint shaft structure, i.e. universal joint shaft powder feeding rifle body 13 can be adjusted arbitrarily rifle body angle, makes rifle body axis and arc axis form appropriate incident angle.Lead powder mouth 16 and be connected to powder feeding flexible pipe 18 exits, the directed sleeve 17 of powder feeding pipe clamps leads powder mouth 16 and powder feeding flexible pipe 18, makes it to be fixed in axis direction, and fastening by location gripping sleeve 14.Powder-feeding nozzle 15 is made by red copper, be installed on location gripping sleeve 14 front ends, and powder mouth 16 is led in the meal outlet of powder-feeding nozzle 15 in the location.Adjust after the powder feeding incidence angle, the alloyed powder later and decadent stage of a school of thought is accurately sent into the electric arc heated district by powder-feeding nozzle 15 ejections, forms weld bead.
Concrete use-case: fill Gas Tungsten Arc Welding as example take typical alloy powder, adjust automatic powder feeding rifle universal joint shaft powder feeding rifle body 13, make its axis and argon tungsten-arc welding gun axis line into about 45 ° of incidence angles.Welding gun is aimed at zone to be welded, presses powder feeding switch 11, and welding gun shifts to an earlier date powder feeding, forms the alloyed powder later and decadent stage of a school of thought by powder-feeding nozzle 15 ejections.After the alloyed powder later and decadent stage of a school of thought is stable, press starting the arc press button 7, welding gun send protective gas in advance, and the subsequently starting the arc, the welding beginning.After welding zone has welded, at first close powder feeding switch 11, after electric arc continues to keep burning blink, close starting the arc press button 7, make blow-out, and lag behind and to stop the supple of gas or steam, welding finishes.

Claims (3)

1. automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding, it is characterized in that: described welding gun is comprised of tungsten argon arc welding gun and automatic powder feeding rifle two large divisions;
Described automatic powder feeding rifle comprises powder feeding gun support (6), tape cable powder feeding pipe joint (9), powder feeding gun handle (10), powder feeding switch (11), rifle body gripping sleeve (12), universal joint shaft powder feeding rifle body (13), location gripping sleeve (14), powder-feeding nozzle (15), leads powder mouth (16), the directed sleeve (17) of powder feeding pipe, powder feeding flexible pipe (18), control cables interface (19) and powder feeding interface (20);
The powder feeding gun handle (10) of described automatic powder feeding rifle is connected with the welding gun operating grip (5) of tungsten argon arc welding gun by powder feeding gun support (6); The rifle body of described automatic powder feeding rifle is the universal joint shaft structure, it is universal joint shaft powder feeding rifle body (13), its rear end connects powder feeding gun handle (10), powder feeding flexible pipe (18) enters universal joint shaft powder feeding rifle body (13) from powder feeding gun handle (10), lead powder mouth (16) and be connected to powder feeding flexible pipe (18) exit, leading powder mouth (16) and powder feeding flexible pipe (18) is clamped by the directed sleeve of powder feeding pipe (17) at universal joint shaft powder feeding rifle body (13) front end, and fastening by location gripping sleeve (14), make and lead powder mouth (16) and powder feeding flexible pipe (18) is fixed in universal joint shaft powder feeding rifle body (13), location gripping sleeve (14), the axis direction that powder-feeding nozzle (15) forms; Powder-feeding nozzle (15) is installed on location gripping sleeve (14) front end, leads powder mouth (16) and is positioned the meal outlet place of powder-feeding nozzle (15); There is powder feeding interface (20) described powder feeding flexible pipe (18) rear end, and control cables interface (19) is arranged on the powder feeding gun handle (10).
2. automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding according to claim 1 is characterized in that: universal joint shaft powder feeding rifle body can be adjusted arbitrarily the angle of itself and arc axis, thereby obtains best powder feeding incidence angle.
3. automatic paraxial powder feeding welding gun for alloy powder filling argon tungsten-arc welding according to claim 1; it is characterized in that: have independently powder feeding path and protective gas path, protective gas, alloy powder can by separately independently passage be fed to the weld zone.
CN 201110376894 2011-11-24 2011-11-24 Automatic paraxial powder-feeding welding gun for alloy powder filling argon tungsten-arc welding Expired - Fee Related CN102489847B (en)

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CN107971607A (en) * 2017-12-28 2018-05-01 大连威尔博合金科技有限公司 A kind of metal dust and ceramic powders mixing build-up welding apparatus
CN111822845A (en) * 2020-07-10 2020-10-27 江苏理工学院 Static shaft shoulder powder filling friction welding head system
CN112404668B (en) * 2020-10-29 2022-09-13 南京理工大学 Powder feeding electric arc additive device and method for high-nitrogen steel

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GB839961A (en) * 1956-11-01 1960-06-29 Bristol Siddeley Engines Ltd Improvements in or relating to engine accessory mounting arrangements
DK67487A (en) * 1987-02-10 1988-08-11 Vacumig Aps WELDING GUN
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CN2164938Y (en) * 1993-08-11 1994-05-18 刘改成 NC automatic tracking welding positioner
CN2276240Y (en) * 1996-12-04 1998-03-11 西安交通大学 Internal powder conveying combined spray nozzle for plasma arc powder spray welding gun
CN100408250C (en) * 2005-11-25 2008-08-06 北京工业大学 Side shaft powder feeding apparatus based on laser powder filling welding and powder feeding method
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