CN113427130A - laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle - Google Patents
laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle Download PDFInfo
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- CN113427130A CN113427130A CN202110651422.5A CN202110651422A CN113427130A CN 113427130 A CN113427130 A CN 113427130A CN 202110651422 A CN202110651422 A CN 202110651422A CN 113427130 A CN113427130 A CN 113427130A
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- wire feeding
- feeding nozzle
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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
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
-
- 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
-
- 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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Abstract
A high-temperature-resistant wire feeding nozzle for a laser-GMA electric arc composite heat source wire filling. At present, the prior art easily causes unstable welding process and poor weld joint forming, and meanwhile, the wire feeding nozzle does not have good high temperature resistance, so that the traditional wire feeding nozzle cannot meet the use requirement. The invention comprises the following components: the wire feeding nozzle (1) is characterized in that the front end of the wire feeding nozzle is of a cone structure, the outer diameter of the middle end of the wire feeding nozzle is phi 3 mm-phi 4mm, the outer diameter of the large end of the wire feeding nozzle is phi 6 mm-phi 8mm, the rear end of the wire feeding nozzle is an external thread cylinder and is connected with the water cooling seat (2) through threads, a round through hole B (6) with the diameter of 1.0 mm-phi 1.6mm is arranged in the middle of the length direction of the wire feeding nozzle, a group of cooling holes (5) are uniformly arranged on the circumference of the wire feeding nozzle, each circle is provided with 4-16 cooling holes, the cooling holes are communicated with the round through hole B, the distance between two axially adjacent circles of cooling holes is 3mm-6mm, the diameter of the cooling holes is 0.1mm-0.2mm, the length of the cone part of the wire feeding nozzle is 15mm-30mm, and the wire feeding nozzle is made of tungsten or ceramic. The invention is used for the high-temperature-resistant wire feeding nozzle of the laser-GMA electric arc composite heat source wire filling.
Description
Technical Field
The invention relates to the technical field of laser processing, in particular to a high-temperature-resistant wire feeding nozzle for a wire filling of a laser-GMA electric arc composite heat source.
Background
The laser-GMA (GMA is short for gas metal arc welding, including MIG and MAG arc) arc hybrid welding technology is a high-efficiency and high-quality advanced welding technology, and compared with the traditional gas metal arc welding (MAG/MIG), the laser-GMA (GMA is short for gas metal arc welding, including MIG and MAG arc) arc hybrid welding technology has the technical advantages of high welding speed, low welding heat input, small welding deformation, large weld penetration, easy realization of single-side welding double-side forming, joint structure refinement, joint performance improvement and the like, particularly, the characteristic that the welding method can realize high-stability arc welding under a high-speed welding condition enables the welding method to have remarkable technical advantages in welding of medium and thin plates, but in order to improve the deposition efficiency under the high-speed welding condition, the power of the GMA arc is generally increased to obtain larger deposition amount of welding wires, however, the method for improving the deposition amount of metals by increasing the GMA arc power can cause the molten pool metals to be overheated, the formation of welding seams is seriously influenced, even the defects of collapse, undercut and the like of the welding seams are caused, and meanwhile, the performance and the structure of the joint are damaged; aiming at the problems, the invention patent ZL201410092005.1 provides a laser-GMA electric arc composite heat source wire-filling welding method, which fully utilizes the inherent characteristics of concentrated heat source energy, high thermal efficiency and high molten pool temperature of the composite heat source welding method on the premise of not increasing GMA electric arc power, realizes the melting of welding wires by additionally filling welding wires and utilizing surplus heat in the welding process, improves the deposited metal efficiency by 50-100 percent, greatly improves the welding wire deposition efficiency in the welding process, compared with the traditional laser-GMA electric arc composite heat source welding method, the method has the advantages that the welding heat input energy is not obviously increased under the same welding speed, the method is a new high-quality and high-efficiency welding process, the feeding mode and the reliable stability of the additional filling welding wires are the key points of the welding method, in order to ensure the stability of the welding process, the additional filling welding wires are inserted into the welding molten pool, the welding wire is melted by the abundant heat of a welding molten pool instead of directly melting the welding wire by an electric arc, otherwise, the welding wire is easily melted and forms large-particle molten drops to fall into the molten pool without being inserted into the molten pool, so that the problems of unstable welding process and poor weld forming are caused.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant wire feeding nozzle with a laser-GMA electric arc composite heat source for filling wires, which adopts a two-section design and consists of a front-end high-temperature-resistant part and a rear-end cooling part, wherein the two parts are connected together by threads, and the high-temperature-resistant wire feeding nozzle made of different materials effectively solves the high-temperature-resistant problem of the wire feeding nozzle.
The above purpose is realized by the following technical scheme:
a laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle comprises the following components: send a mouth 1, characterized by: the front end of the wire feeding nozzle adopts a cone structure, the outer diameter of the small end of the wire feeding nozzle is phi 3 mm-phi 4mm, the outer diameter of the large end of the wire feeding nozzle is phi 6 mm-phi 8mm, the rear end of the wire feeding nozzle is an external thread cylinder and is connected with the water cooling seat 2 through threads, a round through hole B6 with the diameter of 1.0 mm-phi 1.6mm is arranged in the middle of the length direction of the wire feeding nozzle, a group of cooling holes 5 are uniformly arranged on the circumference of the wire feeding nozzle, each circle of the wire feeding nozzle is provided with 4-16 cooling holes, the cooling holes are communicated with the round through hole B, the distance between two axially adjacent circles of the cooling holes is 3mm-6mm, the diameter of the cooling holes is 0.1mm-0.2mm, the length of the cone part of the wire feeding nozzle is 15mm-30mm, and the wire feeding nozzle is made of tungsten or ceramic.
laser-GMA electric arc composite heat source fill a high temperature resistant wire feeding mouth, the water-cooling seat adopt the copper alloy to make to process into cylinder or oval cylinder or rectangular cylinder with it, the inside cooling water course that has of water-cooling seat for lead to the cooling water, water-cooling seat length direction intermediate position circular through-hole A has, circular through-hole A with circular through-hole B communicate with each other and diameter between them is the same, the welding process in circular through-hole A circular through-hole B inside lead to inert gas, inert gas pass through the cooling hole cool off the high temperature resistant part in wire feeding mouth front end.
Has the advantages that:
1. the invention relates to a laser-GMA electric arc composite heat source wire-filling high-temperature-resistant wire feeding nozzle, which adopts a two-section design and consists of a front-end high-temperature-resistant part and a rear-end cooling part, wherein the front-end high-temperature-resistant part is made of tungsten or ceramic, the rear-end cooling part is made of copper alloy and is cooled by circulating water, the two parts are connected together by threads, and in order to ensure the service life of the front-end high-temperature-resistant part of the wire feeding nozzle, argon is introduced into a wire feeding hole for cooling in the welding process.
2. The invention designs and manufactures the sectional type wire feeding nozzle made of the dissimilar materials, adopts the double cooling of cooling water and gas, greatly prolongs the service life of the wire feeding nozzle with the additional filler wire, obviously increases the stability and the reliability in the welding process, and has more compact volume compared with the traditional water-cooled wire feeding nozzle.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the feed nozzle of FIG. 1.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a sectional view B-B in fig. 2.
Wherein: 1. the wire feeding nozzle comprises a wire feeding nozzle 2, a water cooling seat 3, circular through holes A and 4, a cooling water channel 5, a cooling hole 6 and a circular through hole B.
The specific implementation mode is as follows:
example 1:
a laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle comprises the following components: send a mouth 1, characterized by: the front end of the wire feeding nozzle adopts a cone structure, the outer diameter of the small end of the wire feeding nozzle is phi 3 mm-phi 4mm, the outer diameter of the large end of the wire feeding nozzle is phi 6 mm-phi 8mm, the rear end of the wire feeding nozzle is an external thread cylinder and is connected with the water cooling seat 2 through threads, a round through hole B6 with the diameter of 1.0 mm-phi 1.6mm is arranged in the middle of the length direction of the wire feeding nozzle, a group of cooling holes 5 are uniformly arranged on the circumference of the wire feeding nozzle, each circle of the wire feeding nozzle is provided with 4-16 cooling holes, the cooling holes are communicated with the round through hole B, the distance between two axially adjacent circles of the cooling holes is 3mm-6mm, the diameter of the cooling holes is 0.1mm-0.2mm, the length of the cone part of the wire feeding nozzle is 15mm-30mm, and the wire feeding nozzle is made of tungsten or ceramic.
Example 2:
according to the laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle in the embodiment 1, the water cooling seat is made of copper alloy and is processed into a cylinder, an oval cylinder or a rectangular cylinder, a group of cooling water channels 4 are formed inside the water cooling seat and are used for allowing cooling water to flow through, a circular through hole A3 is formed in the middle of the water cooling seat in the length direction, the circular through hole A is communicated with the circular through hole B, the diameters of the circular through hole A and the circular through hole B are the same, inert gas is led into the circular through hole A and the circular through hole B in the welding process, and the inert gas cools a high-temperature-resistant part at the front end of the wire feeding nozzle through the cooling holes;
the laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle is manufactured by adopting a two-section design and a dissimilar material, and consists of a front-end high-temperature-resistant part and a rear-end cooling part, wherein the front-end high-temperature-resistant part is manufactured by adopting tungsten or ceramics, fine cooling holes which are densely distributed are processed on the front-end high-temperature-resistant part, the cooling holes are communicated with a wire feeding hole, inert gas is introduced into the interior of the wire feeding hole to cool the wire feeding hole, the rear-end cooling part is manufactured by adopting copper alloy and is cooled by adopting circulating water, and the two parts are connected together by adopting threads;
the high-temperature resistant part of the wire feeding nozzle adopts a cone design, is made of tungsten or ceramic, and adopts a laser drilling processing method to uniformly drill cooling holes on the surface of the wire feeding nozzle made of tungsten or ceramic along the radial direction, wherein the cooling holes are communicated with the wire feeding holes, each circle of 4-16 cooling holes are arranged, the distance between every two adjacent circles of cooling holes along the axial direction is 3-6 mm, and the diameter of each cooling hole is 0.1-0.2 mm.
The inner diameter phi 2= phi 1+ delta, delta =0.1mm-0.3mm, phi 1 is the diameter of the welding wire to be sent, and the diameter phi 1 of the welding wire to be sent covers 0.8mm, 1.0mm, 1.2mm and 1.6 mm.
The cooling part at the rear end of the wire feeding nozzle is made of copper alloy, a cooling water channel is processed, and circulating water is introduced for cooling in the welding process.
The specific implementation modes are two types:
(1) tungsten-copper wire feeding nozzle
The high-temperature-resistant wire feeding nozzle is manufactured by the method, the nozzle consists of a front-end high-temperature-resistant part and a rear-end cooling part, the nozzle is designed and manufactured by adopting a part body made of a different material, wherein the front-end high-temperature-resistant part of the wire feeding nozzle is made of tungsten, is in a conical shape, has a small diameter phi of 4mm, a large diameter phi of 8mm and a length of 25mm, wire feeding holes with the diameter phi of 1.4mm are machined by electric sparks, cooling holes are drilled on the wire feeding nozzle by a laser drilling method, the diameter phi of each cooling hole is 0.15mm and are annularly arranged, 12 holes are arranged in each circle, the distance between every two adjacent circles of holes is 3mm, M5 multiplied by 0.8 external threads are machined at one end with the large diameter phi of 8mm and are connected to the rear-end cooling part through threads, the rear-end cooling part is made of red copper, and is in a plate-shaped structure, the size of 12mm multiplied by 8mm and the rectangular cross section, the length of 120mm, and the cross section of the cooling water channel is 3mm multiplied by 2mm, and the nozzle is sealed by flame front welding after the split processing. The wire feeding nozzle is used for carrying out a 5A06 aluminum alloy laser-MIG electric arc composite heat source wire filling welding test, a test base material is a 5A06 aluminum alloy plate, the specification of the test plate is 1000 x 500 x 12mm, the used welding wire is an ER5356 aluminum alloy welding wire with the diameter phi of 1.2mm, a pulse MIG electric arc is adopted in the welding process, the laser is in the front during compounding, the electric arc is in the back, the heat source distance between the laser and the electric arc is 5mm, and the additional filling welding wire is fed from the middle of the two heat sources;
welding parameters are as follows: the welding speed is 1 m/min, the laser power is 3200W, the welding average current is 180A, the wire feeding speed of an additional welding wire is 4.0 m/min, the swing frequency of the welding wire is 5 HZ, the swing amplitude is 2mm, the volume flow is 20L/min, the used laser is an optical fiber laser, the protective gas is industrial pure argon, repeated overlaying welding is carried out on the surface of an aluminum alloy test plate in the test process, the test is carried out for 10 minutes, and the wire feeding nozzle is not damaged.
(2) Ceramic-copper wire feeding nozzle
The high-temperature-resistant wire feeding nozzle is manufactured by the method, the nozzle consists of a front-end high-temperature-resistant part and a rear-end cooling part, and is designed and manufactured by adopting a part body made of a different material, wherein the front-end high-temperature-resistant part of the wire feeding nozzle is made of ceramics, is in a cone shape, has a small diameter phi of 6mm, a large diameter phi of 10mm, a length of 20mm and a wire feeding hole diameter phi of 1.4mm, cooling holes are drilled on the wire feeding nozzle by a laser drilling method, have a diameter phi of 0.15mm and are annularly arranged, 8 holes are arranged in each circle, the distance between every two adjacent circles of holes is 3mm, M5 multiplied by 0.8 external threads are machined at one end with the large diameter phi of 8mm and are connected to the rear-end cooling part through threads, the rear-end cooling part is made of red copper, and has a plate-shaped structure, a rectangular cross section size of 12mm multiplied by 10mm and a length of 120mm, a cooling cross section of 3mm multiplied by 2mm, and a water channel is sealed by flame front welding after split processing. The wire feeding nozzle is used for carrying out a 5A06 aluminum alloy laser-MIG electric arc composite heat source wire filling welding test, a test base material is a 5A06 aluminum alloy plate, the specification of the test plate is 1000 x 500 x 12mm, the used welding wire is an ER5356 aluminum alloy welding wire with the diameter phi of 1.2mm, a pulse MIG electric arc is adopted in the welding process, the laser is in the front during compounding, the electric arc is in the back, the heat source distance between the laser and the electric arc is 5mm, and the additional filling welding wire is fed from the middle of the two heat sources;
welding parameters are as follows: the welding speed is 1 m/min, the laser power is 3200W, the welding average current is 180A, the wire feeding speed of an additional welding wire is 4.0 m/min, the swing frequency of the welding wire is 5 HZ, the swing amplitude is 2mm, the volume flow is 20L/min, the used laser is an optical fiber laser, the protective gas is industrial pure argon, repeated overlaying welding is carried out on the surface of an aluminum alloy test plate in the test process, the test is carried out for 10 minutes, and the wire feeding nozzle is not damaged.
Claims (2)
1. A laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle comprises the following components: send a mouth, characterized by: the front end of the wire feeding nozzle adopts a cone structure, the outer diameter of the small end of the wire feeding nozzle is phi 3 mm-phi 4mm, the outer diameter of the large end of the wire feeding nozzle is phi 6 mm-phi 8mm, the rear end of the wire feeding nozzle is an external thread cylinder and is connected with the water cooling seat through threads, a round through hole B with the diameter of 1.0 mm-phi 1.6mm is arranged in the middle of the length direction of the wire feeding nozzle, a group of cooling holes are uniformly arranged on the circumference of the wire feeding nozzle, each circle of the wire feeding nozzle is provided with 4-16 cooling holes, the cooling holes are communicated with the round through hole B, the distance between two axially adjacent circles of the cooling holes is 3mm-6mm, the diameter of each cooling hole is 0.1mm-0.2mm, the length of the cone part of the wire feeding nozzle is 15mm-30mm, and the wire feeding nozzle is made of tungsten or ceramic.
2. The laser-GMA electric arc composite heat source wire-filling high-temperature-resistant wire feeding nozzle as claimed in claim 2, which is characterized in that: the water-cooling seat adopt the copper alloy to make to it is processed into cylinder or oval cylinder or rectangular cylinder, the inside cooling water course that has of water-cooling seat for lead to the cooling water, water-cooling seat length direction intermediate position circular through-hole A has, circular through-hole A with circular through-hole B communicate with each other and diameter between them is the same, the welding process in circular through-hole A circular through-hole B inside lead to inert gas, inert gas pass through the cooling hole cooling down the high temperature resistant part in wire feeding mouth front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110651422.5A CN113427130A (en) | 2021-06-11 | 2021-06-11 | laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110651422.5A CN113427130A (en) | 2021-06-11 | 2021-06-11 | laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle |
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| Publication Number | Publication Date |
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| CN113427130A true CN113427130A (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110651422.5A Pending CN113427130A (en) | 2021-06-11 | 2021-06-11 | laser-GMA electric arc composite heat source wire filling high-temperature-resistant wire feeding nozzle |
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| CN (1) | CN113427130A (en) |
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2021
- 2021-06-11 CN CN202110651422.5A patent/CN113427130A/en active Pending
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