CN112743245A - Laser coaxial powder feeding and hot wire coupling welding device and method - Google Patents
Laser coaxial powder feeding and hot wire coupling welding device and method Download PDFInfo
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- CN112743245A CN112743245A CN202110005607.9A CN202110005607A CN112743245A CN 112743245 A CN112743245 A CN 112743245A CN 202110005607 A CN202110005607 A CN 202110005607A CN 112743245 A CN112743245 A CN 112743245A
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
Abstract
The invention provides a welding device for laser coaxial powder feeding and hot wire coupling, which comprises: the welding wire feeding device comprises a wire feeder, a hot wire power supply and a workpiece to be welded; the wire feeder comprises a wire feeding gun and a welding wire, wherein the welding wire is arranged in the wire feeding gun; the anode of the hot wire power supply is connected with the wire feeding gun, and the cathode of the hot wire power supply is connected with the to-be-welded piece; and a closed loop is formed among the hot wire power supply, the wire feeding gun and the piece to be welded. The welding device with the coaxial laser powder feeding and the hot wire coupling, provided by the invention, can be used for well solving the problems that the welding wire is not completely melted due to the fact that the powder is added in the welding process and the powder is melted and absorbs heat, so that a welding seam with a rough surface and a defect in the interior is formed.
Description
Technical Field
The invention relates to the technical field of material welding, in particular to a welding device and a welding method for laser coaxial powder feeding and hot wire coupling.
Background
Laser filler wire welding is a high-energy beam welding technology, has the advantages of high energy density, small welding heat input, small heat affected zone of a joint and the like, and is widely applied to the fields of aviation, aerospace and automobiles. The requirement of the industrial field for various properties of welding seams, such as shaping wear resistance and corrosion resistance, is increased year by year, and the requirement that in addition to the adjustment of parameters such as wire feeding speed, wire feeding angle and the like, a large amount of alloy elements are added into a welding wire is the most used and most effective method for improving the performance of the welding seams.
In the prior art, in order to improve the performance of a welding seam, two modes of adding a large amount of alloy elements into a welding wire or directly adding powder on the welding wire in the welding process are generally adopted. However, the addition of a large amount of alloy elements in the welding wire can cause that the wire drawing process for manufacturing the welding wire cannot be realized; and the powder is added in the welding process, the powder melts and absorbs heat, and a part of heat required by the welding wire during melting can be absorbed, so that the welding wire is not completely melted, and the problems of rough surface and defective interior of the formed welding line are caused.
Disclosure of Invention
The invention provides a welding device and a welding method for laser coaxial powder feeding and hot wire coupling, and aims to solve the problems that a welding wire is not completely melted due to the fact that powder is added in the welding process and the powder melts and absorbs heat, and accordingly a welding seam with a rough surface and a defect in the interior is formed.
The invention provides a welding device for laser coaxial powder feeding and hot wire coupling, which comprises: the welding wire feeding device comprises a wire feeder, a hot wire power supply and a workpiece to be welded; the wire feeder comprises a wire feeding gun and a welding wire, wherein the welding wire is arranged in the wire feeding gun; the anode of the hot wire power supply is connected with the wire feeding gun, and the cathode of the hot wire power supply is connected with the to-be-welded piece; and a closed loop is formed among the hot wire power supply, the wire feeding gun and the piece to be welded.
Further, the welding device further comprises a coaxial fiber laser; the coaxial optical fiber laser comprises a laser transmitter and an annular focusing mirror, wherein the laser transmitter transmits laser beams to irradiate the annular focusing mirror to form hollow annular laser; a powder feeding pipe is arranged in the annular focusing mirror and connected with a powder feeder, a coaxial powder feeding nozzle is arranged at the bottom of the annular focusing mirror and connected with the powder feeding nozzle, and powder forms a downward-sprayed powder beam through the powder feeding pipe and the powder feeding nozzle; and the welding wire, the powder beam current and the hollow annular laser are converged to one point on a piece to be welded. The hollow annular laser provides heat for melting the welding wire and the powder beam to ensure that the welding wire and the powder beam are melted simultaneously, and various alloy elements in the powder beam are utilized to improve various performances of a welding seam, so that the problem of difficulty in a wire drawing process caused by addition of the alloy elements in the welding wire in the prior art is solved.
Further, the wire feeder also comprises a contact nozzle and a host machine; the host is connected with the hot wire power supply and used for driving the wire feeding gun to feed wires; one end of the wire feeding gun is connected with the host, and the other end of the wire feeding gun is provided with a conductive nozzle. The hot wire power supply provides power for a wire feeding gun to feed welding wires; the contact tip is used for more stably feeding the welding wire into a designated area on one hand, and enhancing the stability of the welding process and the current conducting capacity on the other hand.
Further, a connecting component is arranged on the side wall of the coaxial optical fiber laser; one end of the connecting component is mounted on the side wall of the coaxial fiber laser, and the other end of the connecting component is fixedly connected with the wire feeding gun; and a protective gas spray pipe is arranged at the bottom of the annular focusing mirror and used for spraying one of Ar gas or He gas. Through the lateral wall at coaxial fiber laser set up coupling assembling to with coupling assembling's one end and send a rifle looks rigid coupling, can be with coaxial fiber laser and send a quick-witted fixed one-tenth a whole, can also increase the welding process, the fixed of welding wire position prevents that the welding wire from sliding to cause and treats welding performance's reduction.
Further, the welding device further comprises a stepping motor; the stepping motor is connected with a tool clamp, and a piece to be welded is fixed on the tool clamp; the stepping motor drives the tool clamp to move so as to control the welding speed of the workpiece to be welded. In the welding process, the positions of the coaxial fiber laser and the wire feeder are not changed, and the welding is completed through the movement of the tool clamp. The workpiece to be welded is fixed by the tool clamp, and the welding speed of the workpiece to be welded is controlled by the speed of the tool clamp driven by the stepping motor to move.
Further, the laser beam with send the contained angle of silk rifle to be 25 ~ 55. By adjusting the angle between the laser beam and the wire feeding gun, the welding seam with smooth surface can be increased.
A novel welding method for laser coaxial powder feeding and hot wire coupling is characterized by comprising the following steps:
(1) before welding, polishing the surface of a workpiece to be welded, cleaning the workpiece with alcohol acetone, and fixing the workpiece on a tool clamp;
(2) the hollow annular laser and the welding wire act on a welded area together, and geometric parameters are set;
(3) setting welding parameters of laser coaxial powder feeding and hot wire coupling;
(4) starting a coaxial optical fiber laser control switch, introducing protective gas, starting a hot wire power supply for 1.0-2.0 s, starting a wire feeder to feed a welding wire, starting a powder feeder, starting a laser emitter to emit laser beams, starting a stepping motor to drive a tool clamp to move a workpiece to be welded along the direction of a welding seam, and simultaneously acting the welding wire, a powder beam and hollow annular laser on the workpiece to be welded for welding;
(5) stopping the rotation of the stepping motor, turning off the powder feeder and the wire feeder, turning off the laser, turning off the direct current hot wire power supply, and finally turning off the protective gas to complete the coaxial powder feeding and hot wire coupling welding of the laser.
Further, in the step (2), the diameter of the laser beam spot is 1-3 mm, and the defocusing amount of the laser beam is-3 to +3 mm.
Further, in the step (3), the laser power is 800-3000W, the welding speed is 50-200 mm/min, the wire feeding speed is 50-300 mm/min, the protective gas is one of Ar gas or He gas, and the flow rate of the inert gas is 10-30L/min.
Further, in the step (4), the hollow ring laser is inclined by 5-10 degrees during welding and points to a part to be welded.
According to the welding device for coaxial laser powder feeding and hot wire coupling, the anode of a hot wire power supply is connected with a wire feeding gun, and the cathode of the hot wire power supply is connected with a to-be-welded part, so that a closed loop is formed among the hot wire power supply, the wire feeding gun and the to-be-welded part; the hot wire power supply is used for preheating the welding wire to reduce the laser energy density required by melting the welding wire, so that the heat required by powder melting is met, the heat required by the welding wire when the welding wire is melted is not influenced, the problems that the welding wire is not completely melted due to the fact that the powder is added in the welding process and the powder is melted and absorbs heat are solved, a welding seam with a rough surface and a defect in the interior is formed, and the welding seam with a smooth surface and a defect-free interior can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a laser coaxial powder feeding and hot wire coupling welding device provided in an embodiment of the present invention;
fig. 2 is a cross-sectional view of a coaxial fiber laser according to an embodiment of the present invention.
Description of reference numerals:
the device comprises a coaxial fiber laser 1, a laser emitter 11, a laser beam 111, an annular focusing mirror 12, a hollow annular laser 121, a powder feeder 13, a powder feeding pipe 131, a powder beam 14, a protective gas spray pipe 15 and a connecting component 16, wherein the coaxial fiber laser is a coaxial fiber laser;
2, a wire feeder, 21, a main machine, 22, a wire feeding gun, 23, a contact nozzle, 24, a welding wire, 25, a hot wire power supply, 251, a positive electrode and 252, wherein the main machine is a main machine;
3 is a workpiece to be welded, 31 is a molten pool, 32 is a tool clamp, and 33 is a stepping motor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. 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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, the present invention provides a welding device for coaxial laser powder feeding and hot wire coupling, which is characterized by comprising: the wire feeder 2, the hot wire power supply 25 and the workpiece to be welded 3; the wire feeder 2 comprises a wire feeding gun 22 and a welding wire 24, wherein the welding wire 24 is arranged in the wire feeding gun 22; the anode 251 of the hot wire power supply 25 is connected with the wire feeding gun 22, and the cathode 252 of the hot wire power supply 25 is connected with the piece to be welded 3; a closed loop is formed among the hot wire power supply 25, the wire feeding gun 22 and the workpiece to be welded 3.
Specifically, the welding device comprises a coaxial optical fiber laser 1, the coaxial optical fiber laser 1 comprises a laser transmitter 11, an annular focusing mirror 12 and a powder feeder 13, the laser transmitter 11 is used for transmitting laser beams, the annular focusing mirror 12 is used for converting the laser beams into hollow annular laser 121, and the powder feeder 13 is used for providing powder to prepare for improving the welding performance during welding.
Further, the laser power of the laser emitted by the laser emitter 11 is 800-3000W, and by setting the laser with such power, the subsequent hollow annular laser 121 can be ensured to melt the welding wire and the powder at the same time.
Further, the hollow ring laser 121 is formed by converting the laser beam emitted by the laser emitter 11 through the ring focusing mirror 12, and is welded by the hollow ring laser 121. Most of laser types used in the traditional laser wire-filling welding technology are optical fiber laser beams or semiconductor lasers, the laser energy distribution forms in the corresponding scanning line width direction are Gaussian-shaped and trapezoidal, and a cladding layer formed after welding has poor performance; the hollow ring laser 121 is used for welding, the energy distribution form in the scanning line width direction is saddle-shaped, and the uniformly distributed energy density can effectively eliminate the phenomenon that the heat accumulation effect at the center of the melting channel and the edge are not melted through caused by the two lasers, so that an excellent cladding layer is formed.
Further, a powder feeding pipe 131 is arranged in the annular focusing mirror 12, the powder feeder 13 is connected with the powder feeding pipe 131, a coaxial powder feeding nozzle is arranged at the bottom of the annular focusing mirror 12 and connected with the powder feeding pipe 131, alloy powder sequentially passes through the powder feeding pipe 131 and the coaxial powder feeding nozzle after coming out of the powder feeder 13 to form a powder beam flow which is sprayed downwards, and the intersection point of the powder beam flow and the hollow annular laser is a welding point. Various alloy elements are added into the alloy powder, so that various properties of the welding seam can be improved, and the problem that the wire drawing process is difficult due to the fact that the alloy elements are added into the welding wire in the prior art is solved.
Further, a protective gas nozzle 15 is arranged at the bottom of the annular focusing mirror 12, the protective gas nozzle 15 is used for adding protective gas in the welding process, the protective gas is inert gas, and the inert gas is used for preventing oxygen in the air from generating chemical reaction with a workpiece to be welded at high temperature to influence the performance of the workpiece to be welded during welding; the inert gas can be selected from any gas with protective property, and preferably, the inert gas is one of Ar gas or He gas; in contrast to Ar gas or He gas, He gas generally has a slightly better protective effect than Ar gas, but He gas is about 3 times more expensive than Ar gas, and is specifically selected according to actual circumstances.
In particular, the welding device further comprises a wire feeder 2, the wire feeder 2 being configured to provide welding wire 24 in preparation for a subsequent welding; the wire feeder 2 comprises a wire feeding gun 22, a contact tip 23, a main machine 21, a welding wire 24 and a hot wire power supply 25, wherein a positive electrode 251 of the hot wire power supply 25 is connected with the wire feeding gun 22, and a negative electrode 252 of the hot wire power supply 25 is connected with the piece to be welded 3; the hot wire power supply 25 is further connected with the host 21, one end of the wire feeding gun 22 is connected with the host 21, and the welding wire 24 is arranged in the wire feeding gun 22; the other end of the wire feeding gun 22 is provided with a contact tip 23.
Furthermore, a closed loop is formed among the hot wire power supply 25, the wire feeding gun 22 and the workpiece to be welded 3, the welding wire is heated by arranging the closed loop, the laser energy density required by melting the welding wire 24 is reduced by adding the hot wire power supply 25 to preheat the welding wire 24, the heat required by powder melting is met, the heat required by melting the welding wire 24 is not influenced, and a welding seam with a smooth surface and almost no defect in the interior can be realized.
Further, the main machine 21 is connected to a hot wire power supply 25, the hot wire power supply 25 provides power for feeding the welding wire 24 from the wire feeding gun 22, and the contact tip 23 is used for feeding the welding wire into a designated area more stably, and for enhancing the stability of the welding process and improving the current conducting capability.
Further, a connecting assembly 16 is arranged on the side wall of the coaxial fiber laser 1, one end of the connecting assembly 16 is installed on the side wall of the coaxial fiber laser 1, and the other end is fixedly connected with the wire feeding gun 22; through set up coupling assembling 16 at coaxial fiber laser 1's lateral wall to with coupling assembling 16's one end and send a rifle 22 looks rigid coupling, can fix coaxial fiber laser 1 and send a machine 2 to become a whole, can also increase the welding process, the fixed of welding wire position prevents that in the welding process, the welding wire slides and causes the reduction of treating welding property of welding.
Further, the connecting assembly 16 can adjust the angle between the wire feeding gun 22 and the laser beam 111, and the included angle between the laser beam 111 and the wire feeding gun 22 is 25-55 °. By adjusting the angle of the laser beam 111 to the wire gun 22, the weld surface can be smoothed. Wherein, when the included angle is about 35 degrees, the most smooth formed welding line can be obtained on the surface.
Further, the welding wire 24, the powder beam 14 and the hollow ring laser 121 are converged to a point on the to-be-welded part 3, a molten pool 31 is formed on the surface of the to-be-welded part 3, the hollow ring laser 121 provides heat for melting the welding wire 24 and the powder beam 14, so that the welding wire 24 and the powder beam 14 are simultaneously melted, and various alloy elements in the powder beam 14 are utilized to improve various properties of a welding seam.
Further, the effective length of the contact tip 23 is 25mm, the inner diameter of the contact tip 23 is determined according to the diameter of the welding wire 24 to be filled, and the effective extension length of the welding wire 24 on the contact tip 23 is about 15 mm.
Further, the wire feeding speed of the wire feeding gun 22 is 50-300 mm/min.
Specifically speaking, welding set still includes step motor 33, step motor 33 is connected with frock clamp 32, the fixed weldment 3 of treating on the frock clamp 32, step motor 33 drive frock clamp 32 removes to be used for controlling the welding speed of waiting weldment 3.
Further, the welding speed is 50-200 mm/min.
The invention provides a novel welding method for laser coaxial powder feeding and hot wire coupling, which comprises the following steps:
(1) before welding, polishing the surface of a workpiece to be welded, cleaning the workpiece with alcohol acetone, and fixing the workpiece on a tool clamp;
(2) the hollow annular laser and the welding wire act on a welded area together, and geometric parameters are set;
(3) setting welding parameters of laser coaxial powder feeding and hot wire coupling;
(4) starting a coaxial optical fiber laser control switch, introducing protective gas, starting a hot wire power supply for 1.0-2.0 s, starting a wire feeder to feed a welding wire, starting a powder feeder, starting a laser emitter to emit laser beams, starting a stepping motor to drive a tool clamp to move a workpiece to be welded along the direction of a welding seam, and simultaneously acting the welding wire, a powder beam and hollow annular laser on the workpiece to be welded for welding;
(5) stopping the rotation of the stepping motor, turning off the powder feeder and the wire feeder, turning off the laser, turning off the direct current hot wire power supply, and finally turning off the protective gas to complete the coaxial powder feeding and hot wire coupling welding of the laser.
Further, in the step (2), the diameter of the light spot of the laser beam is 1-3 mm, and the diameter of the light spot of the laser beam 111 is set to be 1-3 mm, so that the tip of the powder and the tip of the welding wire are wrapped by the light spot; secondly, in order to ensure that the energy density of the laser line is large enough, the heat is more concentrated by the smaller laser spot, and then the welding wire and the powder are better melted. The defocusing amount of the laser beam is-3 to +3mm, the defocusing amount is close to 0 defocusing, the laser heat source is more concentrated, the negative defocusing amount is used for obtaining deeper fusion depth, and the positive defocusing amount is used for obtaining a wider fusion coating layer. The specific defocus amount is determined according to actual conditions.
Further, in the step (3), the laser power is 800-3000W, the welding speed is 50-200 mm/min, the wire feeding speed is 50-300 mm/min, the protective gas is one of Ar gas or He gas, and the flow rate of the inert gas is 10-30L/min. The reason why the laser power is 800-3000W and the welding speed is 50-200 mm/min is that the laser power is set to 800-3000W for adjusting the heat input to the powder and the welding wire in a wider adjustment range to prevent the filler material from being over-burned or not melted due to the melting points of different materials and the absorptivity to the laser. The welding speed increases with increasing laser power, and likewise the adjustment range of the welding speed is set in order to prevent the filler material from being over-burnt or not melted.
Further, in the step (4), the hollow ring laser is inclined by 5-10 degrees during welding and points to a part to be welded. The hollow ring laser is inclined by 5-10 degrees during welding, so that the laser head is prevented from being damaged due to the fact that the laser is reflected into the laser head.
Further, the defocusing amount of the laser beam is realized by adjusting the distance between the emitting head of the laser emitter and the piece to be welded.
Therefore, according to the welding device with the coaxial laser powder feeding and hot wire coupling, the anode of the hot wire power supply is connected with the wire feeding gun, and the cathode of the hot wire power supply is connected with the workpiece to be welded, so that a closed loop is formed among the hot wire power supply, the wire feeding gun and the workpiece to be welded; the hot wire power supply is used for preheating the welding wire to reduce the laser energy density required by melting the welding wire, so that the heat required by powder melting is met, the heat required by the welding wire when the welding wire is melted is not influenced, the problems that the welding wire is not completely melted due to the fact that the powder is added in the welding process and the powder is melted and absorbs heat are solved, a welding seam with a rough surface and a defect in the interior is formed, and the welding seam with a smooth surface and a defect-free interior can be realized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a coaxial powder feeding of laser and welding set of hot wire coupling which characterized in that includes: the welding wire feeding device comprises a wire feeder, a hot wire power supply and a workpiece to be welded;
the wire feeder comprises a wire feeding gun and a welding wire, wherein the welding wire is arranged in the wire feeding gun;
the anode of the hot wire power supply is connected with the wire feeding gun, and the cathode of the hot wire power supply is connected with the to-be-welded piece;
and a closed loop is formed among the hot wire power supply, the wire feeding gun and the piece to be welded.
2. The laser coaxial powder feeding and hot wire coupled welding device of claim 1, further comprising a coaxial fiber laser;
the coaxial optical fiber laser comprises a laser transmitter and an annular focusing mirror, wherein the laser transmitter transmits laser beams to irradiate the annular focusing mirror to form hollow annular laser;
a powder feeding pipe is arranged in the annular focusing mirror and connected with a powder feeder, a coaxial powder feeding nozzle is arranged at the bottom of the annular focusing mirror and connected with the powder feeding nozzle, and powder forms a downward-sprayed powder beam through the powder feeding pipe and the powder feeding nozzle;
and the welding wire, the powder beam current and the hollow annular laser are converged to one point on a piece to be welded.
3. The laser coaxial powder feeding and hot wire coupled welding device as claimed in claim 2, wherein the wire feeder further comprises a contact tip and a main machine;
the host is connected with the hot wire power supply and used for driving the wire feeding gun to feed wires;
one end of the wire feeding gun is connected with the host, and the other end of the wire feeding gun is provided with a conductive nozzle.
4. The laser coaxial powder feeding and hot wire coupling welding device as claimed in claim 3, wherein a connecting component is arranged on the side wall of the coaxial fiber laser;
one end of the connecting component is mounted on the side wall of the coaxial fiber laser, and the other end of the connecting component is fixedly connected with the wire feeding gun;
and a protective gas spray pipe is arranged at the bottom of the annular focusing mirror and used for spraying one of Ar gas or He gas.
5. The laser coaxial powder feeding and hot wire coupled welding device as claimed in claim 4, wherein the welding device further comprises a stepper motor;
the stepping motor is connected with a tool clamp, and a piece to be welded is fixed on the tool clamp;
the stepping motor drives the tool clamp to move so as to control the welding speed of the workpiece to be welded.
6. The laser coaxial powder feeding and hot wire coupling welding device as claimed in claim 5, wherein the included angle between the laser beam and the wire feeding gun is 25-55 °.
7. A novel welding method for laser coaxial powder feeding and hot wire coupling is characterized by comprising the following steps:
(1) before welding, polishing the surface of a workpiece to be welded, cleaning the workpiece with alcohol acetone, and fixing the workpiece on a tool clamp;
(2) the hollow annular laser and the welding wire act on a welded area together, and geometric parameters are set;
(3) setting welding parameters of laser coaxial powder feeding and hot wire coupling;
(4) starting a coaxial optical fiber laser control switch, introducing protective gas, starting a hot wire power supply for 1.0-2.0 s, starting a wire feeder to feed a welding wire, starting a powder feeder, starting a laser emitter to emit laser beams, starting a stepping motor to drive a tool clamp to move a workpiece to be welded along the direction of a welding seam, and simultaneously acting the welding wire, a powder beam and hollow annular laser on the workpiece to be welded for welding;
(5) stopping the rotation of the stepping motor, turning off the powder feeder and the wire feeder, turning off the laser, turning off the direct current hot wire power supply, and finally turning off the protective gas to complete the coaxial powder feeding and hot wire coupling welding of the laser.
8. The novel welding method of coaxial laser powder feeding and hot wire coupling according to claim 7, characterized in that in step (2), the spot diameter of the laser beam is 1-3 mm, and the defocusing amount of the laser beam is-3 to +3 mm.
9. The novel welding method of claim 7, wherein in the step (3), the laser power is 800-3000W, the welding speed is 50-200 mm/min, the wire feeding speed is 50-300 mm/min, the shielding gas is one of Ar gas and He gas, and the flow rate of the inert gas is 10-30L/min.
10. The novel welding method of coaxial laser powder feeding and hot wire coupling according to claim 7, characterized in that in step (4), the hollow ring laser is inclined by 5-10 degrees and directed to the part to be welded during welding.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888438A (en) * | 2022-06-17 | 2022-08-12 | 长春理工大学 | Automatic change welding bridging fibril equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101138755A (en) * | 2006-09-08 | 2008-03-12 | 陈国雄 | Split type coaxial powder-feeding nozzle for laser fusion and coating |
| CN101733550A (en) * | 2010-01-09 | 2010-06-16 | 苏州大学 | Welding wire sending and pulverized solder sending laser cladding forming method and device |
| EP2735394A1 (en) * | 2012-12-19 | 2014-05-28 | Richter Maschinenfabrik AG | Welding head of a submerged arc welding assembly and submerged arc welding assembly with such a welding head |
| CN104195543A (en) * | 2014-08-18 | 2014-12-10 | 苏州克兰兹电子科技有限公司 | In-light coaxial composite wire-feeding and powder-feeding laser cladding system |
| CN109434286A (en) * | 2018-12-21 | 2019-03-08 | 陕西天元智能再制造股份有限公司 | A kind of efficient silk material laser cladding method |
| CN211804327U (en) * | 2019-12-25 | 2020-10-30 | 中建安装集团有限公司 | Preheating device for hot wire welding |
| CN112108769A (en) * | 2020-09-22 | 2020-12-22 | 江苏斯普瑞科技有限公司 | Synchronous wire feeding and powder feeding laser cladding welding system and cladding welding method |
-
2021
- 2021-01-05 CN CN202110005607.9A patent/CN112743245A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101138755A (en) * | 2006-09-08 | 2008-03-12 | 陈国雄 | Split type coaxial powder-feeding nozzle for laser fusion and coating |
| CN101733550A (en) * | 2010-01-09 | 2010-06-16 | 苏州大学 | Welding wire sending and pulverized solder sending laser cladding forming method and device |
| EP2735394A1 (en) * | 2012-12-19 | 2014-05-28 | Richter Maschinenfabrik AG | Welding head of a submerged arc welding assembly and submerged arc welding assembly with such a welding head |
| CN104195543A (en) * | 2014-08-18 | 2014-12-10 | 苏州克兰兹电子科技有限公司 | In-light coaxial composite wire-feeding and powder-feeding laser cladding system |
| CN109434286A (en) * | 2018-12-21 | 2019-03-08 | 陕西天元智能再制造股份有限公司 | A kind of efficient silk material laser cladding method |
| CN211804327U (en) * | 2019-12-25 | 2020-10-30 | 中建安装集团有限公司 | Preheating device for hot wire welding |
| CN112108769A (en) * | 2020-09-22 | 2020-12-22 | 江苏斯普瑞科技有限公司 | Synchronous wire feeding and powder feeding laser cladding welding system and cladding welding method |
Non-Patent Citations (2)
| Title |
|---|
| 姚博瀚等: "《汽车焊装技术》", 30 November 2016, 北京理工大学出版社, pages: 71 - 72 * |
| 王运赣等: "《3D打印技术》", 31 July 2014, 华中科技大学出版社, pages: 157 - 160 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888438A (en) * | 2022-06-17 | 2022-08-12 | 长春理工大学 | Automatic change welding bridging fibril equipment |
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Application publication date: 20210504 |