CN105414764A - TIG (tungsten inert gas welding) arc synchronous preheating assisted connection method based on laser additive manufacturing - Google Patents
TIG (tungsten inert gas welding) arc synchronous preheating assisted connection method based on laser additive manufacturing Download PDFInfo
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- CN105414764A CN105414764A CN201511023612.3A CN201511023612A CN105414764A CN 105414764 A CN105414764 A CN 105414764A CN 201511023612 A CN201511023612 A CN 201511023612A CN 105414764 A CN105414764 A CN 105414764A
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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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
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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
- B23K26/24—Seam 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
- B23K26/346—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
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Abstract
The invention provides a TIG (tungsten inert gas welding) arc synchronous preheating assisted connection method based on laser additive manufacturing, relates to a novel material laser welding method and solves the problems that Ti-Al intermetallic compound materials, high-temperature alloys, aluminum alloys and the like are sensitive to laser welding cracks, materials reflecting laser severely are likely to crack or have other defects during welding, the laser utilization rate is low and the like. According to the method, a to-be-welded workpiece is processed, polished and washed, a technological parameter is set, and welding is performed. TIG arc is taken as a preheating heat source, crack sensitivity proneness of the material is reduced in the welding process, and the defects of low laser absorption rate of the material, high energy consumption in the welding process and the like are effectively overcome; meanwhile, the TIG arc is stable, easy to control and low in cost, has a cathode atomization function and can effectively remove an oxide film on the surface of the material.
Description
Technical field
The present invention relates to a kind of material laser welding new method, be specially and adopt based on the method being aided with the synchronous preheating of TIG electric arc in the method for attachment process of laser gain material manufacture, belong to materials processing engineering field.
Background technology
Ti-Al series intermetallic compound material alloys has that specific strength is high, density is low, fracture toughness is good and the excellent properties such as creep resistance is strong, become the study hotspot of high-temperature structural material, the alternative materials as conventional Ti alloy and high density nickel base superalloy has been sent to great concern.With Ti in Ti-Al series intermetallic compound
3al, TiAl and TiAl
3research comparatively extensive.
Focus mostly in arc welding, diffusion welding (DW) and electron beam welding about the welding of Ti-Al series intermetallic compound material in current document, found that the intensity of weldment fails to reach the intensity of mother metal, main problem is that the high-temp plastic of weldment is very poor, easily cracks in welding process.There is the problems such as low, the easy formation brittle layer of strength of joint in diffusion welding (DW); Electro-beam welding joint tissue easily forms column crystal and thick equiax crystal; Conventional laser welding is fast due to cooling velocity, to thermal weld stress sensitivity, easily causes coarse grains to affect joint toughness.
Technology that laser gain material manufactures (printing also referred to as 3D) is the thought based on calculus, and the mode of the scanning of employing laser laminar, superposition forming successively increases material and converts mathematical model to Three-dimensional Entity Components.Truly achieve digitlization, intelligent machining, have processing flexibility high, without the need to mould, the advantage such as operation is few, the process-cycle is short, can process arbitrary shape, size adaptability is good, low and drip molding physical and chemical performance is excellent for parts in small batch processing cost.Therefore, easily crack for Ti-Al series intermetallic compound laser weld, organize thick, the problems such as high-temp plastic difference, we propose a kind of method of attachment manufactured based on laser gain material in earlier stage, namely according to the welding line joint of Ti-Al series intermetallic compound, the groove of design definite shape, to adapt to carry out the manufacture of increasing material, then the method for laser deposition is utilized between the weld seam of two connecting materials according to the principle that laser gain material manufactures, the new material that one is similar to weld shape between two mother metals is formed by the method for successively piling up, the new material formed is utilized to connect two mother metals.Owing to being utilize the principle based on increasing material manufacture to adopt the method for successively piling up, the thickness of every layer material is very thin, therefore, by the adjustment to technological parameter, can realize reduction or the control of the defects such as material jointing internal porosity, crackle.
But, adopt in the method connection procedure manufactured based on laser gain material for Ti-Al series intermetallic compound, also occurred crackle between layers at laser deposition; The weld defect problems such as simultaneously for aluminium alloy, adopt in the method connection procedure manufactured based on laser gain material, metal material is relatively more serious to laser reflection, and laser utilization is low, also easily crack.
Summary of the invention
The object of the invention is to solve the problems such as the defect tendencies such as crackle that the material welding serious to laser weld crack-sensitivity, laser reflection such as Ti-Al series intermetallic compound material, high temperature alloy, aluminium alloy exist are large, laser utilization is low, and propose the method for attachment manufactured based on laser gain material that the synchronous preheating of a kind of TIG electric arc assists.
The method of attachment manufactured based on laser gain material that the synchronous preheating of a kind of TIG electric arc of the present invention is assisted, it carries out according to following steps:
Step one: double V-groove is processed in position to be welded for workpiece to be welded, and to groove and the cleaning of neighbouring surface of position, polishing and with fixture by fixing for clamping workpiece to be welded on the table;
Step 2: technological parameter is set:
Regenerator section:
Electric current is 20A ~ 60A, and shielding gas flow amount is 5L/min ~ 20L/min, and welding gun angle of inclination is 5 ° ~ 15 °, and arc center and laser spot center distance d are 5mm ~ 20mm;
Welding portion:
Laser power is 300W ~ 4000W, and spot diameter is 1mm ~ 4mm, and speed of welding is 3mm/s ~ 40mm/s, powder feed rate is 2g/min ~ 25g/min, powder feeding carrier gas flux is 3L/min ~ 12L/min, and protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction;
Step 3: fill in Ar groove at backing plate and be filled with Ar gas, Ar throughput is 5L/min ~ 15L/min;
Step 4: first, preheating TIG electric arc first acts on material surface to be welded, control preheat temperature to 100 DEG C ~ 200 DEG C, subsequently, laser beam acts on surface of the work to be welded, send into powder filler by coaxial or paraxonic powder feeder simultaneously and implement welding, preheating TIG welding gun is synchronous with laser beam to walk welding along weld seam, namely completes the connection based on laser gain material manufacture that the described synchronous preheating of TIG electric arc is assisted.
The present invention is based on laser gain material manufacture method of attachment principle is: utilization increases the principle that material manufactures, and controls energy input, and employing laser deposition, the mode of successively filling form a part being similar to bevel shape and directly connect.Manufacturing in connection procedure based on laser gain material, in the front of laser powder-filled deposition attachment weld, butt joint needs the part connected to heat, heating-up temperature is generally about 100-200 DEG C, to carry out the preheating of laser powder-filled deposition process for follow-up, avoid increasing in material manufacture process and occur crackle, reduce workpiece to sharp light reflectance, raising absorptivity simultaneously.Its heating means adopt TIG electric arc heated.What the synchronous preheating of TIG electric arc was auxiliary can adopt semiconductor laser, CO based on laser in laser gain material manufacture connection procedure
2gas laser, YAG Solid State Laser or optical-fiber laser etc.; Powder feeder adopts monotubular or bitubular powder feeder; Feeding head adopts coaxial or paraxonic feeding head.
The present invention comprises following beneficial effect:
The method of attachment manufactured based on laser gain material that the synchronous preheating of TIG electric arc is assisted, adopt TIG electric arc as preheating thermal source, alleviate material welding process crack-sensitivity tendency, effectively improve the shortcomings such as material for laser light absorptivity is low, welding process power consumption is large, improve laser utilization; Meanwhile, TIG arc stability, is easy to control, and with low cost, and TIG electric arc has negative electrode atomizing, can effectively remove material surface oxide-film.
Accompanying drawing explanation
Fig. 1 be the synchronous preheating of TIG electric arc of the present invention auxiliary manufacture method of attachment schematic diagram based on laser gain material;
Fig. 2 is the thick Ti of 1mm of embodiment 1
3al sheet material list laser weld joint metallograph;
Fig. 3 is embodiment 2 not preheating laser powder-filled deposition jointing metallograph;
Fig. 4 is not preheating laser powder-filled deposition jointing crackle microphoto;
Fig. 5 is the TIG electric arc preheating laser powder-filled deposition jointing metallograph of embodiment 2;
Fig. 6 is TIG electric arc preheating laser powder-filled deposition jointing microcell enlarged drawing.
Detailed description of the invention
Detailed description of the invention one: the method for attachment manufactured based on laser gain material that the synchronous preheating of a kind of TIG electric arc of present embodiment is assisted, it carries out according to following steps:
Step one: double V-groove is processed in position to be welded for workpiece to be welded, and to groove and the cleaning of neighbouring surface of position, polishing and with fixture by fixing for clamping workpiece to be welded on the table;
Step 2: technological parameter is set:
Regenerator section:
Electric current is 20A ~ 60A, and shielding gas flow amount is 5L/min ~ 20L/min, and welding gun angle of inclination is 5 ° ~ 15 °, and arc center and laser spot center distance d are 5mm ~ 20mm;
Welding portion:
Laser power is 300W ~ 4000W, and spot diameter is 1mm ~ 4mm, and speed of welding is 3mm/s ~ 40mm/s, powder feed rate is 2g/min ~ 25g/min, powder feeding carrier gas flux is 3L/min ~ 12L/min, and protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction;
Step 3: fill in Ar groove at backing plate and be filled with Ar gas, Ar throughput is 5L/min ~ 15L/min;
Step 4: first, preheating TIG electric arc first acts on material surface to be welded, control preheat temperature to 100 DEG C ~ 200 DEG C, subsequently, laser beam acts on surface of the work to be welded, send into powder filler by coaxial or paraxonic powder feeder simultaneously and implement welding, preheating TIG welding gun is synchronous with laser beam to walk welding along weld seam, namely completes the connection based on laser gain material manufacture that the described synchronous preheating of TIG electric arc is assisted.
Present embodiment adopts TIG electric arc heated, implements the synchronous preheating of TIG electric arc and assists the method for attachment manufactured based on laser gain material.
TIG electric arc, as one of welding heat source be most widely used in industrial production, has the advantages such as arc stability is good, production cost is low, easy to control, is widely used in the welding of the materials such as titanium, aluminium, magnesium, copper and alloy thereof; Meanwhile, TIG arc cathode atomizing effectively can remove the oxide-film of material surface.
Detailed description of the invention two: present embodiment and detailed description of the invention one unlike: the laser instrument of Emission Lasers is semiconductor laser, CO
2gas laser, YAG solid state laser or optical fiber laser.Other is identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment and detailed description of the invention one unlike: the technological parameter of regenerator section is: electric current is 30A ~ 60A; shielding gas flow amount is 8L/min ~ 20L/min; welding gun angle of inclination is 8 ° ~ 15 °, and arc center and laser spot center distance d are 8mm ~ 20mm.Other is identical with detailed description of the invention one.
Detailed description of the invention four: present embodiment and detailed description of the invention one unlike: the technological parameter of regenerator section is: electric current is 30A ~ 60A; shielding gas flow amount is 10L/min ~ 20L/min; welding gun angle of inclination is 10 ° ~ 15 °, and arc center and laser spot center distance d are 10mm ~ 20mm.Other is identical with detailed description of the invention one.
Detailed description of the invention five: present embodiment and detailed description of the invention one unlike: the technological parameter of regenerator section is: electric current is 40A ~ 60A; shielding gas flow amount is 10L/min ~ 15L/min; welding gun angle of inclination is 10 ° ~ 12 °, and arc center and laser spot center distance d are 10mm ~ 15mm.Other is identical with detailed description of the invention one.
Detailed description of the invention six: present embodiment and detailed description of the invention one unlike: the technological parameter of welding portion is: laser power is 500W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 8mm/s ~ 40mm/s; powder feed rate is 5g/min ~ 25g/min; powder feeding carrier gas flux is 5L/min ~ 12L/min; protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.Other is identical with detailed description of the invention one.
Detailed description of the invention seven: present embodiment and detailed description of the invention one unlike: the technological parameter of welding portion is: laser power is 1000W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 12mm/s ~ 40mm/s; powder feed rate is 10g/min ~ 25g/min; powder feeding carrier gas flux is 8L/min ~ 12L/min; protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.Other is identical with detailed description of the invention one.
Detailed description of the invention eight: present embodiment and detailed description of the invention one unlike: the technological parameter of welding portion is: laser power is 2000W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 18mm/s ~ 40mm/s; powder feed rate is 15g/min ~ 25g/min; powder feeding carrier gas flux is 8L/min ~ 12L/min; protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.Other is identical with detailed description of the invention one.
Detailed description of the invention nine: present embodiment and detailed description of the invention one unlike: the technological parameter of welding portion is: laser power is 3000W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 25mm/s ~ 40mm/s; powder feed rate is 18g/min ~ 25g/min; powder feeding carrier gas flux is 10L/min ~ 12L/min; protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.Other is identical with detailed description of the invention one.
Detailed description of the invention ten: present embodiment and detailed description of the invention one unlike: the technological parameter of welding portion is: laser power is 3500W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 30mm/s ~ 40mm/s; powder feed rate is 20g/min ~ 25g/min; powder feeding carrier gas flux is 10L/min ~ 12L/min; protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.Other is identical with detailed description of the invention one.
Content of the present invention is not limited only to the content of the respective embodiments described above, and the combination of one of them or several detailed description of the invention equally also can realize the object of inventing.
Beneficial effect of the present invention is verified by following examples:
Assist the method for attachment manufactured based on laser gain material to the thick Ti of 1.0mm by the preheating synchronous with TIG electric arc of single laser
3welding implemented by Al sheet material, compares analysis.
Embodiment 1
The present embodiment adopts single laser to the thick Ti of 1.0mm
3the step that welding implemented by Al sheet material is as follows:
By location of workpiece polishing to be welded, cleaning, the docking of square groove gapless is fixed on workbench, and laser instrument selective light fibre laser, laser power 900W, defocusing amount is 0, speed of welding 1m/min, shielding gas flow amount 8L/min.Welding point metallograph is as shown in Figure 2, visible, and in weld seam, occurred obvious crackle, run through thickness of workpiece direction, welding quality is very poor.
Embodiment 2
The present embodiment adopts the synchronous preheating of TIG electric arc to assist the method for attachment manufactured based on laser gain material to the thick Ti of 1.0mm
3al sheet material welds, and concrete test method is as follows:
Step one: realized communicating by welding robot with laser instrument by tig arc welding machine, by being synchronized with the movement of control control TIG welding gun and laser beam, schematic diagram as shown in Figure 1.
Step 2: the monolateral 45 ° of double V-grooves of mother metal position to be welded processing will be tested, and groove and neighbouring surface of position are cleared up, polished, and the docking of its gapless is fixed on the table.
Step 3: regenerator section:
Electric current 40A, shielding gas flow amount 8L/min, 8 °, welding gun angle of inclination.Arc center and laser spot center distance d12mm.
Welding portion:
Laser power scope 400W, spot diameter 2mm, speed of welding scope 3mm/s, powder feed rate scope 5g/min, powder feeding carrier gas flux 5L/min, protection gas and line throughput are 5L/min.In order to prevent surface of the work reflects laser from damaging laser head, laser head leans forward 5 ° along welding direction.
Step 4: fill in Ar groove at backing plate and be filled with Ar gas, range of flow is 5L/min.
Step 5: preheating TIG electric arc first acts on material surface to be welded, control preheat temperature 100 DEG C ~ 200 DEG C, subsequently, laser beam acts on material surface to be welded, send into powder filler by coaxial or paraxonic powder feeder simultaneously and implement welding, preheating TIG welding gun is synchronous with laser beam to walk welding along weld seam.
When the present embodiment does not add pre-heating technique (method of attachment of laser powder-filled deposition), welding point metallograph as shown in Figure 3 and Figure 4, visible joint quality is obviously better than single laser and connects, but appoints in weld edge position and so occurred obvious crackle, affects joint quality.
When adopting TIG electric arc as preheating thermal source, welding point metallograph as shown in Figure 5 and Figure 6, visible joint without defects such as visible cracks, even tissue; Meanwhile, owing to the addition of pre-heating technique, laser utilization is significantly improved, and reaches desired effect.
Embodiment 3
The present embodiment adopts the synchronous preheating of TIG electric arc to assist the method for attachment manufactured based on laser gain material to the thick Ti of 1.0mm
3al sheet material welds, and concrete test method is as follows:
Step one: realized communicating by welding robot with laser instrument by tig arc welding machine, by being synchronized with the movement of control control TIG welding gun and laser beam, schematic diagram as shown in Figure 1.
Step 2: the monolateral 45 ° of double V-grooves of mother metal position to be welded processing will be tested, and groove and neighbouring surface of position are cleared up, polished, and the docking of its gapless is fixed on the table.
Step 3: regenerator section:
Electric current 20A, shielding gas flow amount 5L/min, 5 °, welding gun angle of inclination.Arc center and laser spot center distance d scope 5mm.
Welding portion:
Laser power scope 300W, spot diameter 1mm, speed of welding scope 3mm/s.Powder feed rate scope 2g/min, powder feeding carrier gas flux 5L/min, protection gas and line throughput are 5L/min.In order to prevent surface of the work reflects laser from damaging laser head, laser head leans forward 5 ° along welding direction.
Step 4: fill in Ar groove at backing plate and be filled with Ar gas, range of flow is 5L/min.
Step 5: preheating TIG electric arc first acts on material surface to be welded, control preheat temperature 100 DEG C ~ 200 DEG C, subsequently, laser beam acts on material surface to be welded, send into powder filler by coaxial or paraxonic powder feeder simultaneously and implement welding, preheating TIG welding gun is synchronous with laser beam to walk welding along weld seam.
Embodiment 4
The present embodiment adopts the synchronous preheating of TIG electric arc to assist the method for attachment manufactured based on laser gain material to the thick Ti of 1.0mm
3al sheet material welds, and concrete test method is as follows:
Step one: realized communicating by welding robot with laser instrument by tig arc welding machine, by being synchronized with the movement of control control TIG welding gun and laser beam, schematic diagram as shown in Figure 1.
Step 2: the monolateral 45 ° of double V-grooves of mother metal position to be welded processing will be tested, and groove and neighbouring surface of position are cleared up, polished, and the docking of its gapless is fixed on the table.
Step 3: regenerator section:
Electric current 60A, shielding gas flow amount 20L/min, 15 °, welding gun angle of inclination.Arc center and laser spot center distance d scope 20mm.
Welding portion:
Laser power scope 4000W, spot diameter 4mm, speed of welding 40mm/s.Powder feed rate scope 25g/min, powder feeding carrier gas flux 5L/min, protection gas and line throughput are 5L/min.In order to prevent surface of the work reflects laser from damaging laser head, laser head leans forward 5 ° along welding direction.
Step 4: fill in Ar groove at backing plate and be filled with Ar gas, range of flow is 5L/min.
Step 5: preheating TIG electric arc first acts on material surface to be welded, control preheat temperature 100 DEG C ~ 200 DEG C, subsequently, laser beam acts on material surface to be welded, send into powder filler by coaxial or paraxonic powder feeder simultaneously and implement welding, preheating TIG welding gun is synchronous with laser beam to walk welding along weld seam.
Claims (10)
1. the synchronous preheating of TIG electric arc assist based on laser gain material manufacture a method of attachment, it is characterized in that it carries out according to following steps:
Step one: double V-groove is processed in position to be welded for workpiece to be welded, and to groove and the cleaning of neighbouring surface of position, polishing and with fixture by fixing for clamping workpiece to be welded on the table;
Step 2: technological parameter is set:
Regenerator section:
Electric current is 20A ~ 60A, and shielding gas flow amount is 5L/min ~ 20L/min, and welding gun angle of inclination is 5 ° ~ 15 °, and arc center and laser spot center distance d are 5mm ~ 20mm;
Welding portion:
Laser power is 300W ~ 4000W, and spot diameter is 1mm ~ 4mm, and speed of welding is 3mm/s ~ 40mm/s, powder feed rate is 2g/min ~ 25g/min, powder feeding carrier gas flux is 3L/min ~ 12L/min, and protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction;
Step 3: fill in Ar groove at backing plate and be filled with Ar gas, Ar throughput is 5L/min ~ 15L/min;
Step 4: first, preheating TIG electric arc first acts on material surface to be welded, control preheat temperature to 100 DEG C ~ 200 DEG C, subsequently, laser beam acts on surface of the work to be welded, send into powder filler by coaxial or paraxonic powder feeder simultaneously and implement welding, preheating TIG welding gun is synchronous with laser beam to walk welding along weld seam, namely completes the connection based on laser gain material manufacture that the described synchronous preheating of TIG electric arc is assisted.
2. the synchronous preheating of a kind of TIG electric arc according to claim 1 assist based on laser gain material manufacture method of attachment; it is characterized in that the technological parameter of regenerator section is: electric current is 30A ~ 60A; shielding gas flow amount is 8L/min ~ 20L/min; welding gun angle of inclination is 8 ° ~ 15 °, and arc center and laser spot center distance d are 8mm ~ 20mm.
3. the synchronous preheating of a kind of TIG electric arc according to claim 2 assist based on laser gain material manufacture method of attachment; it is characterized in that the technological parameter of regenerator section is: electric current is 30A ~ 60A; shielding gas flow amount is 10L/min ~ 20L/min; welding gun angle of inclination is 10 ° ~ 15 °, and arc center and laser spot center distance d are 10mm ~ 20mm.
4. the synchronous preheating of a kind of TIG electric arc according to claim 3 assist based on laser gain material manufacture method of attachment; it is characterized in that the technological parameter of regenerator section is: electric current is 30A ~ 60A; shielding gas flow amount is 15L/min ~ 20L/min; welding gun angle of inclination is 10 ° ~ 15 °, and arc center and laser spot center distance d are 10mm ~ 20mm.
5. the synchronous preheating of a kind of TIG electric arc according to claim 4 assist based on laser gain material manufacture method of attachment; it is characterized in that the technological parameter of regenerator section is: electric current is 40A ~ 60A; shielding gas flow amount is 10L/min ~ 15L/min; welding gun angle of inclination is 10 ° ~ 12 °, and arc center and laser spot center distance d are 10mm ~ 15mm.
6. the synchronous preheating of a kind of TIG electric arc according to claim 1 assist based on laser gain material manufacture method of attachment; it is characterized in that the technological parameter of welding portion is: laser power is 500W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 8mm/s ~ 40mm/s; powder feed rate is 5g/min ~ 25g/min; powder feeding carrier gas flux is 5L/min ~ 12L/min, and protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.
7. the synchronous preheating of a kind of TIG electric arc according to claim 6 assist based on laser gain material manufacture method of attachment; it is characterized in that the technological parameter of welding portion is: laser power is 1000W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 12mm/s ~ 40mm/s; powder feed rate is 10g/min ~ 25g/min; powder feeding carrier gas flux is 8L/min ~ 12L/min, and protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.
8. the synchronous preheating of a kind of TIG electric arc according to claim 7 assist based on laser gain material manufacture method of attachment; it is characterized in that the technological parameter of welding portion is: laser power is 2000W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 18mm/s ~ 40mm/s; powder feed rate is 15g/min ~ 25g/min; powder feeding carrier gas flux is 8L/min ~ 12L/min, and protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.
9. the synchronous preheating of a kind of TIG electric arc according to claim 8 assist based on laser gain material manufacture method of attachment; it is characterized in that the technological parameter of welding portion is: laser power is 3000W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 25mm/s ~ 40mm/s; powder feed rate is 18g/min ~ 25g/min; powder feeding carrier gas flux is 10L/min ~ 12L/min, and protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.
10. the synchronous preheating of a kind of TIG electric arc according to claim 9 assist based on laser gain material manufacture method of attachment; it is characterized in that the technological parameter of welding portion is: laser power is 3500W ~ 4000W; spot diameter is 1mm ~ 4mm; speed of welding is 30mm/s ~ 40mm/s; powder feed rate is 20g/min ~ 25g/min; powder feeding carrier gas flux is 10L/min ~ 12L/min, and protection gas and line throughput are 5L/min, and laser head leans forward 5 ° along welding direction.
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| CN111014951A (en) * | 2019-12-27 | 2020-04-17 | 广东海洋大学 | Method for solving high reflectivity of copper-aluminum laser welding |
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| CN109689267A (en) * | 2016-07-08 | 2019-04-26 | 挪威钛公司 | Method and apparatus for constructing metal object by solid free fo manufacture by two welding guns |
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| CN109604766A (en) * | 2018-11-21 | 2019-04-12 | 南京理工大学张家港工程院有限公司 | Suitable for reducing the laser welding system and its working method of weld cracking tendency |
| CN110961628B (en) * | 2019-12-24 | 2021-09-03 | 昆明理工大学 | High-density pure copper complex part electron beam selective melting 3D printing method |
| CN110961628A (en) * | 2019-12-24 | 2020-04-07 | 昆明理工大学 | High-density pure copper complex part electron beam selective melting 3D printing method |
| CN111014951A (en) * | 2019-12-27 | 2020-04-17 | 广东海洋大学 | Method for solving high reflectivity of copper-aluminum laser welding |
| US11738400B2 (en) | 2020-02-18 | 2023-08-29 | Airbus (Beijing) Engineering Centre Company Limited | Additive manufacturing system and additive manufacturing method |
| CN111604597A (en) * | 2020-06-01 | 2020-09-01 | 华北水利水电大学 | Double-electric-arc preheating laser swing welding method for K-shaped connector |
| CN111604597B (en) * | 2020-06-01 | 2022-05-24 | 华北水利水电大学 | Double-electric-arc preheating laser swing welding method for K-shaped connector |
| CN113832458A (en) * | 2020-06-23 | 2021-12-24 | 天津大学 | Laser cladding method for inhibiting cracking of FeCoCrNiMnAl high-entropy alloy cladding layer |
| CN112453709A (en) * | 2020-11-20 | 2021-03-09 | 西安热工研究院有限公司 | Welding method for crack damage of deformed high-temperature alloy thin-wall part |
| CN114951956A (en) * | 2022-05-26 | 2022-08-30 | 南京航空航天大学 | Method for eliminating surface thinning amount and root weak connection defects of friction stir welding |
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