CN210498735U - C-TIG Wire welding device capable of controlling heat input - Google Patents
C-TIG Wire welding device capable of controlling heat input Download PDFInfo
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- CN210498735U CN210498735U CN201920700543.2U CN201920700543U CN210498735U CN 210498735 U CN210498735 U CN 210498735U CN 201920700543 U CN201920700543 U CN 201920700543U CN 210498735 U CN210498735 U CN 210498735U
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Abstract
The utility model provides a C-TIG Wire welding device with controllable heat input, which comprises a welding power supply; the welding gun head is provided with a tungsten gun part and a wire feeding part, a conductor is arranged in the wire feeding part, and the conductor is connected with the positive electrode of the welding power supply through a first welding cable; the tungsten gun part is provided with a tungsten electrode, and the tungsten electrode is connected with the negative electrode of the welding power supply through a second welding cable; and a wire feeding mechanism. The utility model provides a pair of controllable heat input's C-TIG Wire welding set is owing to be equipped with send a control mechanism, this it can send the control signal who send a and send a speed to send a control mechanism, adjusts heat input and deposition efficiency to be applicable to different welding and use, thereby realize stable welding.
Description
Technical Field
The utility model relates to a welding method, in particular to controllable heat input's welding set.
Background
In the C-TIG wire process, a welding arc is established between a tungsten electrode and a feeding wire. The welding wire is an anode, the anode heat is used for melting the welding wire, and the tungsten electrode is a cathode and is a non-melting electrode. The welding wire forms molten drops after being melted, and the molten drops enter a molten pool under the action of gravity, plasma flow force, inertia force of the feeding of the welding wire and the like, and are solidified to form a welding seam.
The existing literature also mentions TIG-MIG (or TIG-Wire) indirect arc welding methods, but the existing literature does not provide specific embodiments for comprehensive and deep experimental analysis of main characteristics and contents of the technology, such as controllable heat input, dry elongation control, plasma flow force excavation penetration, and the like, aiming at test exploration or application of a certain product or a special field.
The chinese utility model patent publication No. 103212771a discloses a TIG/MIG indirect arc method for overlaying copper alloy on the sealing surface of a cast iron valve, which comprises preheating the valve, and cleaning the sealing surface; a TIG/MIG indirect electric arc process is adopted, argon is adopted for protection, so that the valve is not connected with electricity, and electric arc is burnt between a tungsten electrode and a welding wire. The utility model has the advantages of stable welding process, less splashing, reliable welding seam strength, no defects of slag inclusion, air holes and the like, welding material saving, automation realization, high efficiency and low cost; meanwhile, the dilution rate of the parent metal is low, and the phenomenon of iron flooding is reduced or avoided. Although the wire feeding speed, the welding current and the angle between the welding gun and the workpiece are disclosed, the specific welding gun and the relation between the wire feeding speed, the welding current and the angle between the welding gun and the workpiece and the welding quality or the welding effect of the workpiece are not opened, and the structure of the welding gun for realizing the welding is not further disclosed.
The utility model discloses a chinese utility model patent of publication 103978288A discloses a method of series TIG-MIG welding, adopts TIG and MIG series connection mode to weld magnesium alloy and dissimilar metal, belongs to the welding technology field. The method comprises the steps that an MIG welding gun is connected with an anode of an MIG power supply, a TIG welding gun is connected with a cathode of the power supply, a welded base metal is not connected with an electrode, the MIG welding gun and the TIG welding gun form a certain angle and a certain distance with a test plate, and specifically, the extension length of a magnesium alloy welding wire is 20-30 mm; (2) connecting a TIG welding gun with a power supply cathode, fixing the TIG welding gun on a workbench by using a fixture, forming an included angle of 15-25 degrees with the vertical direction, wherein the extension length of a tungsten electrode is 5-10 mm, and the vertical distance between the tungsten electrode and a welded substrate is 2-3 mm.
However, during the welding process, the coordination and control of the welding power source to the Wire feeder so that the time sequence control between the arc striking time and the Wire feeding is the problem to be solved continuously by the C-TIG Wire welding gun. Further, the existing welding gun does not consider factors such as tungsten electrode cooling and nozzle cooling.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can make the time of arcing and send the welding that carries out time sequence control between the silk to the cooperation and the control of sending the silk machine with welding source thereby advance to realize low heat input or ultralow heat input, and compare traditional low heat input arc welder and have the C-TIG Wire welder of higher efficiency of depositing.
In order to achieve the above object, the present invention provides a C-TIG Wire welding device with controllable heat input, including:
a welding power supply;
the welding gun head is provided with a tungsten gun part and a wire feeding part, a conductor is arranged in the wire feeding part, and the conductor is connected with the positive electrode of the welding power supply through a first welding cable; the tungsten gun part is provided with a tungsten electrode, and the tungsten electrode is connected with the negative electrode of the welding power supply through a second welding cable; and
a wire feeding mechanism comprising:
a wire reel for continuously supplying a welding wire;
the wire feeder is connected with the wire reel and is used for feeding a welding wire to the gun head of the welding gun;
a motor connected with the wire feeder for starting the wire feeding of the wire feeder; and
and the wire feeding control mechanism is connected with the motor of the wire feeder and sends a wire feeding control signal to control the work of the motor and the wire feeding speed.
Furthermore, a contact tip for clamping a welding wire is arranged at the end part of the electric conductor close to the welding wire nozzle.
Furthermore, an arc welding inner rod cavity is arranged in the tungsten gun part, and argon gas, argon-helium mixed gas or other inert gases enter the inner rod cavity through a gas pipe to provide gas protection for the welding process.
And furthermore, the air pipe is provided with a splitter and a nozzle, so that the mixed gas entering the inner rod cavity is sprayed out after passing through the splitter and then passing through the nozzle.
Further, the tungsten gun part and the wire feeding part are insulated through an insulating structural part.
Further, a cooling part is provided around the tungsten electrode in the tungsten gun part to cool the tungsten electrode.
Further, the cooling part is provided with a cooling water pipe, and cooling water is arranged in the cooling water pipe.
Further, a dry elongation detecting device for detecting the dry elongation of the welding wire is also included.
And the central control unit is connected with the dry elongation detection device, the wire feeding control mechanism and the wire feeding speed detection device and receives a current value signal and the welding wire diameter size information of the welding power supply 2, so that a better match is established between the welding current and the wire feeding speed according to the dry elongation of the welding wire detected by the dry elongation detection device to ensure stable welding.
The utility model provides a pair of controllable heat input's C-TIG Wire welding set is owing to be equipped with send a control mechanism, this it can send the control signal who send a and send a speed to send a control mechanism, adjusts heat input and deposition efficiency to be applicable to different welding and use, thereby realize stable welding.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a C-TIG Wire welding device with controllable heat input according to the present invention.
Fig. 2 is a schematic structural diagram of a welding gun head of a C-TIG Wire welding device with controllable heat input according to the present invention.
Fig. 3 is a schematic illustration of the definition and measurement of the dry elongation of the welding wire of the present invention.
Fig. 4 is a control block diagram of the central control unit of the present invention.
Fig. 5 is a control block diagram of the central control unit of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The utility model provides a on the basis of the utility model people passes through the system test, tests and analyzes principle, leading features, advantage, concrete engineering application to this technique, utility model discloses a controllable heat input's C-TIG Wire welding set.
Referring to fig. 1 and 2, in the C-TIG Wire welding device system with controllable heat input provided by the present invention, the welding power supply 2 is responsible for energy output, the positive electrode thereof is connected to the contact tube 10 on the MIG welding gun through the first welding cable 7, and the contact tube 10 causes current to flow to the welding Wire 28 through the contact tip 29; the cathode of the welding gun is connected with an inner rod 15 of the argon arc welding gun on the welding gun through a second welding cable 6, so that current flows to a tungsten electrode 25 through a tungsten electrode clamp 20; an arc 26 is established between the tungsten electrode 25 and the advancing welding wire 28 to establish a welding circuit to weld the workpiece 30.
Referring again to fig. 1, the welding power source 2 may supply power to the wire feeder 3 via the communication cable 5, and the wire feeder 3 is provided with a motor (not shown) which rotates two rollers 39 of the wire feeder 3, and the two rollers 39 hold the welding wire 28 for transmission to the torch head 1. The motor may receive signals of wire feed speed, start wire feed, stop wire feed, slow wire feed, etc., such that, depending on the material of the wire, dry elongation, wire diameter, welding current, arc starting time, etc., the wire feeder 3 may be instructed to deliver the wire 28 at an automatically matched wire feed speed or at a set wire feed speed, e.g., may be adjusted to start wire feed within 0.02-0.2s after the arc is established, may be adjusted to stop wire feed within the first 0.05-0.2s before the arc is extinguished, may be set to slow wire feed during the arc starting current, etc. In addition, when the welding arc 26 is somehow abnormally quenched, the wire feed is stopped. The welding wire on the welding wire disc 4 is continuously fed to the C-TIG wire welding gun head 1 of the utility model through the wire feeder 3.
The utility model provides a controllable heat input's C-TIG Wire welding set is equipped with one and send a control mechanism (not shown in the figure), and it links to each other with the motor that send a machine 3, can send the work and the Wire feed rate of sending this motor of a control signal control (not shown in the figure) to the work of control Wire feeder 3.
Argon gas, argon-helium mixture gas or other inert gas enters the inner cavity of the argon arc welding rod through the gas pipe 18 and enters the nozzle 24 through the flow divider 23 to provide gas protection for the welding process.
In addition, the tungsten gun part 101 and the wire feeding part 102 of the torch tip 1 are insulated by the insulating structural members 11 and 12. The cooling mechanism used by the argon arc welding gun is a water cooling system, and comprises water inlet and outlet pipes 13 and 17, and sealing gaskets 19, 21 and 22 are used for sealing. The argon arc welding gun barrel nozzle integrated part 16 and the argon arc welding gun inner rod form an argon arc welding gun body, and the argon arc welding gun cap 14 plays a role of pressing a tungsten electrode clamp to fix a tungsten electrode. The utility model discloses a welder gooseneck is outer to be insulating cover, plays gooseneck part insulating effect. Referring to fig. 2 again, the utility model provides a this gooseneck part of the controllable heat input C-TIG Wire welding set of the utility model provides is connected with welding special plane or welding robot, and insulating component plays and connects MIG welder body and argon arc welder body effect to ensure the rigidity.
Additionally, the utility model provides a controllable heat input's C-TIG Wire welding set's an important characteristics is for utilizing cooling body to cool off tungsten utmost point 25, wherein, utilizes on the one hand that tungsten utmost point presss from both sides and has bigger area of contact between the tungsten utmost point, increases the cooling effect to reduce the tungsten utmost point scaling loss in the welding process. In addition, a cooling mechanism is used for cooling, for example, water cooling is used in the embodiment of the present invention, and the water inlet pipe 13 and the water outlet pipe 17 are used with a copper nozzle instead of a ceramic nozzle, in order to prevent the thermal radiation of the arc to the nozzle from causing the nozzle to burst.
The utility model provides a used protective gas of controllable heat input's C-TIG Wire welding set can be pure Ar, Ar/H2, Ar/He. Wherein Ar/H2 may be used to weld nickel-based alloys in order to provide greater arc heat. Ar/He can make the molten pool have higher temperature and improve the fluidity of the molten pool.
The contact tip 26 is disposed at the end of the wire feeding member 102, and has a through hole in the middle through which the welding wire 28 from the wire feeder 3 passes and extends to the outside of the torch head for welding. At the same time, the interior of the via remains in conductive contact. By replacing contact tips of different apertures, different specifications may be used, for example,
the welding wire of (1). The larger the wire diameter, the larger the welding current matched to the wire feed speed.
The utility model provides a people is through deep research and through the experiment, and the discovery is in order to guarantee welding quality, and welding current and send a speed and welding wire diameter to have certain relation, and welding current matches with the difference that send a speed, influences the molten drop size and the molten drop motion trail. Matching the proper welding current for a given wire feed speed is a prerequisite for stable welding.
Referring to fig. 3, the welding Wire dry elongation (CTTD) is the distance from the contact tip to the position right below the tungsten electrode along the welding Wire feeding direction, considering that the welding quality is further improved, different welding Wire dry elongations (CTTD) require different matching welding currents, therefore, the smaller the size provided by the present invention, the different dry elongations require different matching welding currents, therefore, the present invention provides a C-TIG Wire welding apparatus with controllable heat input further comprising a dry elongation detection device 202, referring to fig. 4, the dry elongation detection device 202 comprises an infrared distance measurement element 211 and an angle measurement instrument 212 and a distance calculation instrument 213, the infrared distance measurement element is disposed at the end a of the contact tip 29, the distance L from the end a of the contact tip 29 (the root of the welding Wire) to the tungsten electrode 25 is measured, the angle measurement instrument measures the angle α of the inclination of the contact tip 29, and then the distance calculation instrument calculates according to the following formula:
CTTD＝L*1/cosineα
of course, other measurement methods and devices may be used by dry length detection device 202, as will be appreciated by those of ordinary skill in the art.
Referring to fig. 5, the C-TIG Wire welding apparatus with controllable heat input according to the present invention may further include a central control unit (not shown), which is connected to the dry elongation detection device 202 and the Wire feeding control mechanism and receives the current value signal and the diameter size information of the welding power source, so as to establish a better match between the welding current and the Wire feeding speed according to the dry elongation and the diameter size of the welding Wire detected by the dry elongation detection device to ensure stable welding.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that the present invention may be modified or replaced with other embodiments without departing from the spirit and scope of the present invention.
Claims (8)
1. A C-TIG Wire welding device with controllable heat input is characterized by comprising:
a welding power supply;
the welding gun head is provided with a tungsten gun part and a wire feeding part, a conductor is arranged in the wire feeding part, and the conductor is connected with the positive electrode of the welding power supply through a first welding cable; the tungsten gun part is provided with a tungsten electrode, and the tungsten electrode is connected with the negative electrode of the welding power supply through a second welding cable; and
a wire feeding mechanism comprising:
a wire reel for continuously supplying a welding wire;
the wire feeder is connected with the wire reel and is used for feeding welding wires to the gun head of the welding gun;
a motor connected with the wire feeder for starting the wire feeding of the wire feeder; and
and the wire feeding control mechanism is connected with the motor of the wire feeder and sends a wire feeding control signal to control the work of the motor and the wire feeding speed.
2. A controlled heat input C-TIG Wire welding apparatus as recited in claim 1, wherein the end of the conductor proximate the Wire nozzle is provided with a contact tip for holding the Wire.
3. A controlled heat input C-TIG Wire welding apparatus as claimed in claim 1, wherein the tungsten gun assembly has an inner arc welding rod cavity inside it, and argon, argon-helium mixture or other inert gas is introduced into the inner rod cavity through a gas tube to provide gas shielding for the welding process.
4. The C-TIG Wire welding device with controllable heat input as claimed in claim 3, wherein the gas pipe is provided with a splitter and a nozzle, so that the mixed gas entering the inner rod cavity passes through the splitter and then is sprayed out through the nozzle.
5. A controlled heat input C-TIG Wire welding apparatus as recited in claim 1, wherein the tungsten gun assembly is insulated from the Wire feed assembly by an insulating structure.
6. A controlled heat input C-TIG Wire welding apparatus as claimed in claim 1, wherein a cooling member is provided around the tungsten electrode in the tungsten gun part to cool the tungsten electrode.
7. A C-TIG Wire welding apparatus with controllable heat input according to claim 6, wherein the cooling part is provided with a cooling water pipe, and cooling water is provided in the cooling water pipe.
8. A controlled heat input C-TIG Wire welding apparatus as recited in claim 1, further comprising a dry elongation detector for detecting a dry elongation of the Wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920700543.2U CN210498735U (en) | 2019-05-16 | 2019-05-16 | C-TIG Wire welding device capable of controlling heat input |
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| CN201920700543.2U CN210498735U (en) | 2019-05-16 | 2019-05-16 | C-TIG Wire welding device capable of controlling heat input |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064821A (en) * | 2019-05-16 | 2019-07-30 | 林肯电气管理(上海)有限公司 | A kind of C-TIG Wire welder of controllable heat input |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064821A (en) * | 2019-05-16 | 2019-07-30 | 林肯电气管理(上海)有限公司 | A kind of C-TIG Wire welder of controllable heat input |
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