CN111151902A - Gas-shielded composite welding gun - Google Patents
Gas-shielded composite welding gun Download PDFInfo
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- CN111151902A CN111151902A CN202010060821.XA CN202010060821A CN111151902A CN 111151902 A CN111151902 A CN 111151902A CN 202010060821 A CN202010060821 A CN 202010060821A CN 111151902 A CN111151902 A CN 111151902A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
A gas shield composite welding gun comprises a welding gun main body, a welding gun nozzle, a composite cable and a powder feeding pipe; a torch neck of the welding torch main body is provided with a nozzle seat, a conductive nozzle, a gas flow distribution body and an insulator; the welding gun nozzle is provided with a powder hole and a powder outlet and is connected with the welding gun main body through an insulator; the composite cable is connected to the rear end of the welding gun main body and comprises a welding cable, a wire feeding pipe and an air feeding pipe; through holes are respectively arranged on the electric nozzle seat and the electric nozzle, and the wire feeding pipe, the electric nozzle seat and the through holes on the electric nozzle form a wire feeding channel; the torch body is provided with a welding torch main body, a welding torch seat is arranged on the welding torch main body, a gas distribution body is arranged on the welding torch main body, and a gas transmission channel is formed by a gap between a gas supply pipe and the inner part of the welding torch main body, a through hole on the torch seat, the gas outlet hole, the gas distribution hole and a gap between a conductive nozzle and a welding torch nozzle; the powder feeding pipe, the powder hole and the powder outlet on the welding gun nozzle form a powder feeding channel. The invention can realize the gas shield composite welding process integrating gas metal arc welding and powder surfacing, and improve the quality of welding bead, welding efficiency and welding safety.
Description
Technical Field
The invention relates to a welding gun, in particular to a gas-shielded composite welding gun, which is a novel process for realizing composite co-welding by adding welding powder used for powder surfacing in gas metal arc welding and belongs to the technical field of welding equipment manufacturing.
Background
In Gas Metal Arc Welding (GMAW), an electric arc between a meltable welding wire and a workpiece is used as a heat source to melt the welding wire and the metal of the workpiece, and shielding gas is delivered to a welding area, so that the electric arc, the molten welding wire, a molten pool and the metal near the molten pool are prevented from harmful effects of ambient air, the continuously fed welding wire metal is continuously melted and transited to the molten pool, and is fused with molten base metal to form welding seam metal, and the workpieces are connected with each other.
Gas metal arc welding is suitable for welding most metals and alloys, especially for welding carbon steel and low alloy steel, and therefore has wide application.
However, gas metal arc welding also has significant disadvantages:
firstly, the diameter of a welding wire used in gas metal arc welding is thin and is mostly below 1.6mm, and because the diameter of the welding wire is small, the filling amount of a welding bead is relatively small, so the welding efficiency is not high, but the welding efficiency is difficult to improve by improving the diameter of the welding wire, because the diameter of the welding wire is too thick, the wire feeding difficulty is large and the wire feeding pipeline is required to be very smooth, so the welding wire with the thick diameter cannot be suitable for the working condition of automatic welding by adopting a mechanical arm and other equipment;
secondly, the splashing during the gas metal arc welding is large and is not safe enough;
thirdly, the welding materials for gas metal arc welding have certain limitations, and some high-hardness and high-corrosion-resistant materials are difficult to be made into welding wires, so that the materials cannot be welded through the gas metal arc welding.
In addition, in the field of metal surface engineering, wear-resistant and corrosion-resistant surfacing welding is widely applied, gas metal arc welding is one of main technological methods for realizing wear-resistant and corrosion-resistant surfacing welding, but due to the limitation of welding materials, the performance of the welding product can hardly meet the requirement of high quality.
Plasma powder surfacing (PTA) is a welding process which takes plasma arc as a heat source, rapidly heats alloy powder and the surface of a matrix together by using high temperature generated by plasma arc, melts, mixes, diffuses and solidifies, and after the plasma beam leaves, the surface of the matrix is self-excited and cooled to form a high-performance alloy layer, thereby realizing the strengthening and hardening of the surface of a part. For some products with special requirements, the process is generally adopted to meet the requirements of high quality, such as the corrosion resistance requirement of a valve sealing surface and the like.
There are a number of equipment devices in the prior art for solving problems that arise during plasma powder deposition, such as:
the invention provides a plasma powder surfacing device for fully utilizing alloy powder, which is provided by the invention patent application (application number 201910977626.0). The device comprises a welding gun body and a rotary powder feeding mechanism, wherein the rotary powder feeding mechanism is driven to rotate by adopting protective gas, so that the alloy powder is discharged in the circumferential direction, and the powder is uniformly discharged to prevent blockage.
The plasma arc has the characteristics of high arc temperature, large heat transfer rate, good stability, strong controllability of penetration and the like, so the thickness, the width and the hardness of the surfacing layer can be freely adjusted within a certain range by adjusting related surfacing parameters.
However, the plasma powder surfacing equipment has the disadvantages of high manufacturing cost, complex equipment, high operation difficulty, large welding gun volume and no flexible gas metal arc welding operation; in addition, because the high-performance alloy powder is expensive and the cost for implementing surfacing welding is high, for some products with relatively low performance requirements, the consumable electrode gas shielded welding with relatively low cost is adopted to carry out welding at present.
Currently, there are a number of known techniques for gas metal arc welding including torch techniques such as:
the invention discloses a gas metal arc welding gun disclosed in the patent application (application No. 201910550434.1). The technology comprises a gun neck and a welding wire driving part, can improve the working environment of an alternating current servo motor, and improve the temporary loading rate index of the welding gun, so that the equipment has the capacity of improving the production efficiency and reducing the production cost;
the invention patent application (application number 201910184634.X) discloses a gas metal arc welding gun, which comprises a gun body front end, a conductive nozzle, a nozzle seat and a nozzle, and has the characteristics that welding slag is easy to clean, welding gas is not polluted by air, and the like;
the invention discloses an energy-saving environment-friendly smoke-absorbing type welding gun which is disclosed by the patent application (application number 201711429678.1), and consists of a welding gun main body and a smoke dust purification device, so that the smoke dust of electric welding is efficiently captured and the smoke dust concentration of an operation place is reduced while the welding process and the welding quality are ensured;
the utility model discloses a "a closed coupling gas shielded welding welder" that utility model patent (application number 201721744402.8) provided, including hemisphere type connector, welding gun head, infrared lamp holder and sealed ring canal, the peripheral sealed ring canal of sheatheeing in when the coupling welds can reduce air content, and the corresponding protective gas flow and capacity that increase improves welding point quality when welding, in addition, equip supporting infrared lamp, increase luminance, accurate positioning welding point;
the invention patent application (application No. 201910872341.0) discloses a welding gun structure, which comprises: the induction heating part, the gas protection portion and the spraying portion solve the problem that a welding gun structure in the prior art cannot realize heating, gas protection and spraying integration.
However, careful examination may find that the gas shield welding gun provided by the above prior art can only meet the operation requirements of the conventional gas metal arc welding process, and cannot combine the conventional gas metal arc welding with the plasma powder overlay welding, so that the advantages of the gas metal arc welding and the plasma powder overlay welding are integrated, the disadvantages of the two are overcome, and a better product and a better benefit are obtained.
Disclosure of Invention
In order to overcome the defects of the prior art, the embodiment of the invention provides a gas-shielded composite welding gun, which is used for adding welding powder used in plasma powder surfacing while carrying out gas metal arc welding, so that a novel composite co-welding process combining gas metal arc welding and powder surfacing is realized, and the purposes of improving the quality of a welding bead, reducing the welding quantity, improving the welding efficiency, reducing the splashing amount and improving the safety are achieved.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the utility model provides a compound welder of gas shield for realize that consumable electrode gas shielded welding unites two into one gas shield compound welding technology with powder build-up welding, its characterized in that includes:
the welding gun comprises a welding gun main body, a welding gun nozzle, a composite cable and a powder feeding pipe;
the front end of the welding gun main body is called a gun neck, the front end of the gun neck is provided with a nozzle seat, the front end of the nozzle seat is connected with a conductive nozzle, the outer side of the front end of the nozzle seat is provided with a gas flow distribution body, and the outer side of the nozzle seat and the rear end of the gas flow distribution body are provided with insulators;
the welding gun nozzle is tubular, a connecting end and an outlet end are respectively arranged at two ends of the welding gun nozzle, the connecting end is connected with the insulator, a powder outlet is formed in the outlet end, a powder hole is formed in the tube wall of the welding gun nozzle, the powder outlet is communicated with the powder hole, and the welding gun nozzle is coated with the electric nozzle seat, the gas shunting body and the electric conduction nozzle;
the composite cable comprises a welding cable, a wire feeding pipe and a gas feeding pipe, and is connected with the rear end of the welding gun main body;
through holes are respectively arranged on the electric nozzle seat and the electric nozzle, and the wire feeding pipe, the electric nozzle seat and the through holes on the electric nozzle form a wire feeding channel for the gas shielded composite welding;
the electric nozzle seat is also provided with an air outlet, the gas flow divider is provided with a gas distribution hole, and a gas transmission channel for the gas shield composite welding is formed by a gap between the gas supply pipe and the inner part of the welding gun main body, a through hole on the electric nozzle seat, and a gap between the air outlet, the gas distribution hole and the welding gun nozzle;
the powder feeding pipe is communicated with the powder hole, and the powder feeding pipe, the powder hole and the powder outlet form a powder feeding channel of the gas shielded composite welding.
Furthermore, more than one powder outlet is arranged.
As an optional technical solution, the powder feeding pipe is arranged inside the welding gun main body, and is communicated with the powder hole at the gun neck.
As an optional technical scheme, the powder holes are distributed on the tube wall of the welding gun nozzle in an umbrella rib shape, and the connecting ends of the welding gun nozzle, at which the powder holes are distributed in the umbrella rib shape, are communicated with the powder feeding tube.
As an optional technical scheme, one end of the powder feeding pipe is divided into more than 1 powder feeding branch pipe, the welding gun nozzle is provided with powder holes with the number corresponding to that of the powder feeding branch pipes, and the powder feeding pipe is communicated with the powder holes through the powder feeding branch pipes.
The invention has the beneficial effects and remarkable progress that:
1) the gas-shielded composite welding gun comprises a welding gun main body, a welding gun nozzle, a composite cable and a powder feeding pipe, wherein the welding gun main body comprises a gun neck, a pipe electric nozzle seat, a conductive nozzle, a gas distributing body and an insulator are arranged on the gun neck, the composite cable comprises a welding cable, a wire feeding pipe and a gas feeding pipe, through holes are respectively arranged on the electric nozzle seat and the conductive nozzle, the wire feeding pipe, the electric nozzle seat and the through holes on the conductive nozzle form a wire feeding channel for gas-shielded composite welding, gas outlets are also arranged on the electric nozzle seat, gas distributing holes are arranged on the gas distributing body, and a gap between the gas feeding pipe and the welding gun main body, the through holes on the electric nozzle seat, the gas outlets, the gas distributing holes, and the gaps between the conductive nozzle and the welding gun nozzle form a gas conveying channel for gas-shielded composite welding, so that the gas-shielded welding of a consumable electrode in the common sense can;
meanwhile, the powder feeding pipe is communicated with the powder hole, and the powder feeding pipe, the powder hole and the powder outlet form a powder feeding channel for gas-shielded composite welding, so that when the gas-shielded composite welding gun provided by the embodiment of the invention carries out gas metal arc welding, welding powder usually used in plasma powder surfacing can be put into a molten pool through the powder feeding channel by an external welding powder conveying device to realize surfacing operation, the purpose of completing gas metal arc welding and powder surfacing operation in one welding process is achieved, and the so-called gas-shielded composite welding process integrating gas metal arc welding and powder surfacing is realized;
2) after the gas-shielded composite welding gun provided by the embodiment of the invention realizes a gas-shielded composite welding process, the performance of a welding bead can be obviously changed by adding welding powder with different components and performances, the defect that the welding requirement cannot be met due to the fact that welding wires are few in types and special performance materials cannot be made into wires is overcome, and the wear resistance and the corrosion resistance of the welding bead are effectively improved;
3) after the gas shield composite welding gun provided by the embodiment of the invention realizes a gas shield composite welding process, welding powder with different components and performances can be added to increase the filling capacity of a welding bead, various problems caused by less single-wire welding filling, large wire feeding control difficulty after thickening a welding wire or difficult multi-wire filling welding coordination control are solved, and for welding parts needing large filling amount, such as wide welding seams, fillet welding seams and the like, the welding quantity can be effectively reduced and the welding efficiency can be improved by adding the welding powder;
4) after the gas shield composite welding gun provided by the embodiment of the invention realizes a gas shield composite welding process, in the welding process, by adding welding powder, the splashing amount can be effectively reduced, the dilution rate can be reduced, the welding performance can be improved, and the operation safety can be improved;
5) the gas-shielded composite welding gun provided by the embodiment of the invention has the advantages of novel and unique design, simple and convenient manufacture, safe and reliable work, low cost and excellent effect, and therefore, the gas-shielded composite welding gun has great popularization and application values.
Drawings
To more clearly illustrate the technical solution of the present invention, the drawings required for the embodiment of the present invention will be briefly described below.
It should be apparent that the drawings in the following description are only drawings of some embodiments of the invention, and that other drawings can be obtained by those skilled in the art without inventive exercise, and the other drawings also belong to the drawings required by the embodiments of the invention.
Fig. 1 is a schematic structural view of a gas shielded composite welding gun with a powder feeding tube connected with a welding gun nozzle according to an embodiment of the invention;
fig. 2 is a schematic cross-sectional view of a part of a neck and a nozzle of a gas shielded composite welding gun according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a gas shielded composite welding gun with a powder feeding pipe connected to a main body of the welding gun according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a gas shielded composite welding gun with a plurality of powder feeding branch pipes according to an embodiment of the present invention.
In the figure:
10-a welding gun main body, 11-a gun neck, 111-a nozzle seat, 1111-an air outlet, 112-a conductive nozzle, 113-a gas split fluid, 1131-an air split hole and 114-an insulator;
20-welding gun nozzle, 21-powder hole and 22-powder outlet;
30-a composite cable;
40-powder feeding pipe;
50-a welding wire;
60-welding workpiece, 61-workpiece substrate, 62-welding bead, 63-molten pool;
70-welding powder;
q-shielding gas, D-arc.
Detailed Description
In order to make the objects, technical solutions, advantages and significant progress of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings provided in the embodiments of the present invention, and it is obvious that all of the described embodiments are only some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first", "second", and "third" (if present) and the like in the description and claims of the present invention and the accompanying drawings of the embodiments of the present invention are used only for distinguishing different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
It is to be understood that in the description of the embodiments of the present invention, the terms "upper", "lower", "top", "bottom", and other indicative orientations and positions are only used based on the orientation and position relationship shown in the drawings of the embodiments of the present invention, and are used for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element in question must have a specific orientation, a specific orientation configuration and operation, and therefore, should not be taken as limiting the present invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, movably connected, or integrated; either directly or indirectly through intervening media, either internally or in any other relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be further noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
The technical means of the present invention will be described in detail below with specific examples.
Example one
Fig. 1 is a schematic structural diagram of a gas shielded composite welding gun with a powder feeding tube connected with a welding gun nozzle according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a partial cross-sectional view of a gun neck and a welding gun nozzle of the gas shielded composite welding gun according to an embodiment of the present invention, as shown in the following:
a gas shield composite welding gun is used for realizing a gas shield composite welding process combining gas shielded welding and powder surfacing, and comprises the following steps:
the welding gun comprises a welding gun main body 10, a welding gun nozzle 20, a composite cable 30 and a powder feeding pipe 40;
the front end of the welding gun main body 10 is called as a gun neck 11, the front end of the gun neck 11 is provided with a nozzle base 111, the front end of the nozzle base 111 is connected with a conductive nozzle 112, the outer side of the front end of the nozzle base 111 is provided with a gas split-flow body 113, and the outer side of the nozzle base 111 and the rear end of the gas split-flow body 113 are provided with an insulator 114;
the welding gun nozzle 20 is tubular, two ends of the welding gun nozzle are respectively provided with a connecting end and an outlet end, the connecting end is connected with the insulator 114, the outlet end is provided with a powder outlet 22, the wall of the welding gun nozzle 20 is provided with a powder hole 21, the powder outlet 22 is communicated with the powder hole 21, and the electric nozzle seat 111, the gas shunting body 113 and the contact tip 112 are coated inside the welding gun nozzle 20;
the composite cable 30 includes a welding cable, a wire feeding pipe, and a gas feeding pipe, and the composite cable 30 is connected to the rear end of the welding gun body 10;
through holes are respectively arranged on the electric nozzle seat 111 and the electric nozzle 112, and the wire feeding pipe, the electric nozzle seat 111 and the through holes on the electric nozzle 112 form a wire feeding channel for gas shielded composite welding;
the nozzle base 111 is also provided with an air outlet 1111, the gas flow distribution body 113 is provided with a gas distribution hole 1131, and a gas transmission channel for gas-shielded composite welding is formed by a gap between the gas supply pipe and the interior of the welding gun main body 10, a through hole on the nozzle base 111, and a gap between the air outlet 1111, the gas distribution hole 1131, the contact tip 112 and the welding gun nozzle 20;
the powder feeding pipe 40 is communicated with the powder hole 21, and the powder feeding pipe 40, the powder hole 21 and the powder outlet 22 form a powder feeding channel of the gas shielded composite welding.
As can be seen from fig. 1 and 2:
the gas-shielded composite welding gun provided by the embodiment comprises a welding gun main body 10, a welding gun nozzle 20, a composite cable 30 and a powder feeding pipe 40, wherein the welding gun main body 10 comprises a gun neck 11, an electric nozzle seat 111, a conductive nozzle 112, a gas shunting body 113 and an insulator 114 are arranged on the gun neck 11, the composite cable 30 comprises a welding cable, the wire feeding pipe and the gas feeding pipe are respectively provided with through holes on the electric nozzle seat 111 and the conductive nozzle 112, the wire feeding pipe, the electric nozzle seat 111 and the conductive nozzle 112 form a wire feeding channel for gas-shielded composite welding, the electric nozzle seat 111 is also provided with a gas outlet 1111, a gas distributing hole 1131 is arranged on the gas distributing body 113, and a gas conveying channel for gas-shielded composite welding is formed by a gap between the gas feeding pipe and the inside of the welding gun main body 10, the through hole on the electric nozzle seat 111, the gas outlet 1111, the gas distributing hole 1131 and a gap between the conductive nozzle 112 and the welding gun nozzle 20, so that the gas-shielded composite welding of a consumable electrode in the general sense can be realized;
meanwhile, the powder feeding pipe 40 is communicated with the powder hole 21, and the powder feeding pipe 40, the powder hole 21 and the powder outlet 22 form a powder feeding channel for gas shielded composite welding, so that when the gas shielded composite welding gun provided by the embodiment performs gas metal arc welding, welding powder usually used in powder overlay welding can be put into a molten pool through the powder feeding channel by an external welding powder conveying device (not shown in the figure) to realize overlay welding operation, and the purpose of completing the gas metal arc welding and the powder overlay welding operation in a welding process is achieved, namely, the so-called gas shielded composite welding process integrating the gas metal arc welding and the powder overlay welding is realized.
Specifically, as shown in fig. 2, the gas shielded composite welding gun according to the present embodiment combines the following gas shielded composite welding process, i.e., the gas shielded composite welding process, in which the gas shielded composite welding and the powder overlay welding are combined, and has the effects of increasing the welding amount at one time and improving the welding speed and quality, that is, the effects of:
firstly, the welding wire 50 is pushed by an external welding wire pushing device (not shown in the figure) to extend out of the contact tip 112, when the composite cable 30 is electrified, the tip of the welding wire 50 is in short circuit with the workpiece substrate 61 to form an arc D, the arc D melts the welding wire 50 and the workpiece substrate 61 near the tip of the welding wire 50 to form a molten pool 63, meanwhile, the gas supply pipe supplies protective gas Q to the welding area through the gas transmission channel, so that the arc D, the melted welding wire 50, the molten pool 63 and the workpiece substrate 61 and weld bead 62 metal near the molten pool 63 are prevented from harmful effects of surrounding air, and gas metal arc welding is realized;
meanwhile, an external welding powder conveying device (not shown in the figure) puts welding powder 70 into the molten pool 63 through a powder feeding channel formed by the powder feeding pipe 40, the powder hole 21 and the powder outlet 22, so as to realize the surfacing operation, and achieve the operations of gas metal arc welding and powder surfacing in one welding process, namely, the gas metal arc welding and powder surfacing combined welding process is realized;
with the continuous melting of the continuously fed welding wire 50 metal and the input welding powder 70 and the melting of the workpiece substrate 61, a molten pool 63 is formed, and the molten pool 63 metal is cooled to form the welding bead 62 metal, so that the welding is realized, namely the process effect of the welding wire 50 and the welding powder 70 composite welding is realized.
Obviously, after the gas-shielded composite welding gun provided by the embodiment of the invention realizes the gas-shielded composite welding process, the performance of the welding bead 62 can be obviously changed by adding the welding powder 70 with different components and performances, the defect that the welding requirement cannot be met due to the fact that the welding wires are few in types and special performance materials cannot be made into wires is overcome, and the wear resistance and the corrosion resistance of the welding bead 62 are effectively improved; various problems caused by less single-wire welding filling, large wire feeding control difficulty after welding wire thickening or difficult multi-wire filling welding coordination control can be solved, and for welding parts needing large filling amount, such as wide welding seams, fillet welding seams and the like, the welding quantity can be effectively reduced and the welding efficiency can be improved by adding the welding powder 70;
in addition, after the gas shield composite welding gun provided by the embodiment of the invention realizes the gas shield composite welding process, the welding powder 70 is added in the welding process, so that the splashing amount can be effectively reduced, the dilution rate can be reduced, the welding performance can be improved, and the operation safety can be improved.
To ensure even and rapid delivery of the welding powder 70, further, the outlet end of the welding gun tip 20 may be provided with a plurality of powder outlets 22.
Example two
The embodiment is another gas shield composite welding gun form provided by the invention.
The gas shield composite welding gun provided by the embodiment maintains the basic structure of the first embodiment.
For the sake of brevity, technical features and structural names that are the same as those of the first embodiment are not described again, and only the parts that are different from those of the first embodiment are described.
Fig. 3 is a schematic structural diagram of a gas shield composite welding gun in which a powder feeding pipe is connected with a welding gun main body according to an embodiment of the present invention:
in the gas shielded hybrid welding gun according to the present embodiment, the powder feeding tube 40 is disposed inside the gun body 10 and communicates with the powder hole 21 at the neck 11 (see fig. 2).
By the design, the regularity of the composite welding gun can be improved, and the composite welding gun is beneficial to operation of a manipulator or in a small space.
In another alternative technical solution, the powder holes 21 on the tube wall of the welding gun nozzle 20 are distributed in an umbrella rib shape, and the powder holes 21 distributed in the umbrella rib shape are communicated with the powder feeding tube 40 at the connecting end of the welding gun nozzle 20.
Due to the design, the welding powder 70 in the powder feeding pipe 40 can be distributed through the powder holes 21 distributed in the umbrella-shaped manner, so that the flow of the welding powder 70 at the powder outlet 22 is effectively controlled to be uniform.
EXAMPLE III
The embodiment is another gas shield composite welding gun form provided by the invention.
The gas shield composite welding gun provided by the embodiment maintains the basic structure of the first embodiment.
For the sake of brevity, technical features and structural names that are the same as those of the first embodiment are not described again, and only the parts that are different from those of the first embodiment are described.
As shown in fig. 4, a schematic structural diagram of a gas shielded composite welding gun with a plurality of powder feeding branch pipes according to an embodiment of the present invention is shown:
in the gas shielded composite welding gun provided by the embodiment, one end of the powder feeding pipeline 40 is divided into more than 1 powder feeding branch pipe 41, the welding gun nozzle 20 is provided with the powder holes 21 with the number corresponding to that of the powder feeding branch pipes 41, and the powder feeding pipe 40 is communicated with the powder holes 21 through the powder feeding branch pipes 41.
By the design, the welding powder 70 in the powder feeding pipeline 40 is divided before reaching the powder pipe 21, so that the flow of the welding powder 70 at the powder outlet 22 is effectively controlled to be uniform.
In summary, it can be seen that:
according to the gas-shielded composite welding gun provided by the embodiment, the powder feeding pipe and the powder hole are respectively arranged on the welding gun body and the welding gun nozzle of the conventional consumable electrode gas shielded welding, so that the gas-shielded composite welding process integrating the consumable electrode gas shielded welding and the powder surfacing welding is realized;
through the gas shield composite welding process, the problem that the welding efficiency is difficult to improve because the diameter of a welding wire cannot be thickened at one step in the conventional gas metal arc welding can be effectively solved, the welding efficiency is greatly improved, and meanwhile, the addition of welding powder plays a role in inhibiting welding spatter and improves the welding safety;
more importantly, after the gas shield composite welding gun provided by the invention is used for realizing a gas shield composite welding process, the performance of a welding bead can be effectively improved by adding welding powder made of different materials, and the wear resistance and corrosion resistance of the welding bead are improved;
the gas shield composite welding gun provided by the invention can achieve the implementation effect of powder surfacing while realizing gas metal arc welding, can effectively reduce the welding cost and obtain better economic benefit.
In addition, the gas-shielded composite welding gun provided by the embodiment of the invention has the advantages of novel and unique design, simple and convenient manufacture, safe and reliable work, low cost and excellent effect, and therefore, the gas-shielded composite welding gun has great popularization and application values.
During the description of the above description:
the description of the terms "this embodiment," "an embodiment of the invention," "as shown at … …," "further improved technical solution," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention; in this specification, the schematic representations of the terms used above are not necessarily for the same embodiment or example, and the particular features, structures, materials, or characteristics described, etc., may be combined or brought together in any suitable manner in any one or more embodiments or examples; furthermore, those of ordinary skill in the art may combine or combine features of different embodiments or examples and features of different embodiments or examples described in this specification without undue conflict.
Finally, it should be noted that:
the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same;
although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes and modifications may be made, and equivalents may be substituted for elements thereof without departing from the scope of the embodiments of the present invention.
Claims (5)
Priority Applications (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116689972A (en) * | 2023-04-28 | 2023-09-05 | 中铁宝桥（扬州）有限公司 | Multi-wire control and intelligent powder feeding welding device and composite steel plate welding method |
| CN120619530A (en) * | 2025-08-14 | 2025-09-12 | 江苏高卡轻合金有限公司 | Industrial welding robot with gas protection |
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| CN116689972A (en) * | 2023-04-28 | 2023-09-05 | 中铁宝桥（扬州）有限公司 | Multi-wire control and intelligent powder feeding welding device and composite steel plate welding method |
| CN120619530A (en) * | 2025-08-14 | 2025-09-12 | 江苏高卡轻合金有限公司 | Industrial welding robot with gas protection |
| CN120619530B (en) * | 2025-08-14 | 2025-10-31 | 江苏高卡轻合金有限公司 | An industrial welding robot with gas protection |
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