CN105397296B - Laser deposition-melt injection synchronous compound connecting method - Google Patents
Laser deposition-melt injection synchronous compound connecting method Download PDFInfo
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- CN105397296B CN105397296B CN201511027899.7A CN201511027899A CN105397296B CN 105397296 B CN105397296 B CN 105397296B CN 201511027899 A CN201511027899 A CN 201511027899A CN 105397296 B CN105397296 B CN 105397296B
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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
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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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
Abstract
The invention relates to a laser deposition-melt injection synchronous compound connecting method. The laser deposition-melt injection synchronous compound connecting method aims at solving the problems that a metal matrix composite welding reinforcement phase is damaged by fire, air hole defect tendency is great, brittle intermetallic compounds are easy to produce, early-stage preparation process of laser powder filling welding is relatively complex, and the more reinforcement phase is dissolved in high temperature liquid metal. The method disclosed by the invention comprises the following steps of machining a to-be-welded workpiece, installing a powder feeding head, setting welding technological parameters, and starting a machine for welding. According to the method disclosed by the invention, energy input is accurate and controllable, material components are convenient to adjust, reinforcement phase particles can be prevented from being damaged by fire as far as possible due to adoption of a melt injection method, the flexibility is great, the automation degree is high, and minimum feature size and heat input are only limited by minimum spot size.
Description
Technical field
The present invention relates to a kind of metal-base composites laser welding new method, belongs to materials processing engineering field.
Background technology
High specific strength that metal-base composites (Metal Matrix Composites, abbreviation MMCs) has, compare mould
Excellent comprehensive such as amount, good heat conduction, electric conductivity, wearability, high-temperature behavior, low thermal coefficient of expansion, high dimensional stability
Performance is closed, metal-base composites is respectively provided with space flight, aviation, electronics, automobile and sophisticated and futuristic weapons system and widely should
Use prospect.Relative to simple metal material, due to metal-base composites complex manufacturing technology, cost intensive, this is to a certain degree
On limit the application of metal-base composites.Metal-base composites can be divided into continuous fibre according to the difference of reinforcement morphology
Dimension composite, short fiber composite material, particulate reinforced composite, woven composite etc..Preparation technology mainly has powder
Metallurgy, stirring casting, jet deposition and Pressure Infiltration etc..
Due to the special microstructure of metal-base composites, physicochemical properties exist very big between matrix and reinforcement
Difference, this had both caused metal-base composites to have the excellent properties of metallic matrix and reinforcement concurrently, and the two can be overcome again
Performance is not enough.But, also exactly this special microstructure feature of metal-base composites determines that its welding difficulty is relative
It is much bigger in conventional metal material.
At present, the connection to metal-base composites is studied and concentrates on melting, Solid-State Welding, soldering using more
Three major types.Melting mainly includes TIG, MIG, MAG weldering etc.；Solid-State Welding mainly has Transient Liquid-phase Bonding (TLP), solid-state diffusion
Weldering, agitating friction weldering etc.；Soldering then has the soldering in air atmosphere, the soldering in protective atmosphere, vacuum brazing etc..During melting welding,
The presence of reinforcement reduces molten bath mobility, easily causes the defects such as poor appearance of weld, pore and crackle；Meanwhile, in high tender feeling
Under condition, strengthen and interfacial reaction generation frangible compounds are mutually susceptible to and parent metal between.Therefore, conventional fusion welding side
Method particles reiforced metal-base composition high-quality connection difficult to realize.
The normal melting welding of metal-base composites is primarily present following problem：
First, appearance of weld is poor.Enhancing mutually reduces molten bath mobility, while metallic matrix easily occurs in welding process flying
Splash, form welding depression, strengthen phase residue and be attached to weld edge.
2nd, distributed mutually is strengthened uneven.Parent metal melts and strengthens mutually non-fusible in welding process, and reinforcement is advanced by
In liquid-solid boundary elapsed, cause the enhancing distributed mutually in weld seam uneven.
3rd, interfacial reaction forms frangible compounds.Parent metal material mutually would generally occur boundary with strengthening in welding process
Face is reacted, and such as in SiCp/Al composite plate welds, SiC particulate occurs following reaction with Al：
SiC(s)+Al(l)|Al4C3(s)+Si(s)
Interfacial reaction can not only consume enhancing phase, weaken its reinforced effects；And, interfacial reaction product mostly is fragility
Phase, seriously undermines joint performance.
4th, weld defect tendency is big.Due to physical property marked difference, welding process between metallic matrix and enhancing phase
The defects such as middle crackle, pore, incomplete fusion tendency is big.
Compare melting, although solid diffusivity is avoided that the fusing of composite, do not occur to strengthen granule and parent metal
Between interfacial reaction, it is to avoid the generation of brittlement phase, but during Solid-State Welding, materials to be welded need to apply larger pressure, easily make
Mutually itself destroy with the joint interface composite or enhancing for strengthening phase into mother metal.
And for soldering, compared with other welding methods, heating temperature is low, mother metal is non-fusible, is difficult to cause matrix
The interfacial reaction alternate with enhancing；And brazing deformation is little, joint is attractive in appearance, but strengthens the presence of phase granule, serious to hinder solder to exist
The moistening on mother metal surface with sprawl, while there is matrix-enhancing phase, strengthening the alternate Weak link of phase-enhancing, have a strong impact on joint
Performance.
The content of the invention
The invention aims to solve to strengthen when metal-base composites is welded phase scaling loss, gas hole defect tendency it is big,
Easily generate weld metal zone brittle intermetallic thing, laser powder-filled welding process has that early-stage preparations process is relative complex, enhancing is in height again
The problems such as dissolving more in warm liquid metal.And provide a kind of laser deposition-molten note synchronization composite connecting method.
A kind of laser deposition of the present invention-molten note synchronization composite connecting method, it is followed the steps below：
Step one：Double V-groove is processed into at the position to be welded of workpiece to be welded；
Step 2：Groove and neighbouring position surface are cleared up, polished, and is fixed on clamping workpiece to be welded with fixture
On workbench；
Step 3：Coaxial and paraxonic feeding head is installed, welding condition is set：
Laser power is 600W～5000W, and spot diameter is 1mm～4mm, and speed of welding is 3mm/s～15mm/s；Powder feeding
Speed is 2g/min～15g/min, and powder feeding carrier gas flux is 3L/min～20L/min, and it is 2g/ to strengthen phase granule injection rate
Min～20g/min, implant angle is 30 °～70 °, and shielding gas and line throughput are 5L/min；Laser head is along welding side
Turn forward 5 °；
Step 4：Powder filler is sent into position while welding using coaxial powder feeding head, generating device of laser execution step is controlled
Three technological parameter, produces laser beam, powder is melted under laser irradiation and forms molten bath；
Step 5：While coaxial feeding powder filler is welded, paraxonic feeding head is passed through to molten bath at the rear portion in molten bath
Middle injection strengthens phase granule, that is, complete described laser deposition-molten note synchronization composite joint.
The present invention mixs homogeneously powder filler with phase particle powder ball mill is strengthened, and mixing powder filler is obtained；Will
Mixing powder filler is fitted in powder feeding machine；Wherein, the body of the volume more than workpiece weld groove position to be welded of powder filler is mixed
Product.
Mixing powder filler in powder filler with strengthen phase granule ratio according to matrix material in workpiece to be welded with enhancing
The ratio of phase mixes the body of the volume of powder filler more than matrix in metal-base composites to be welded and enhancing phase determining
Product.
Powder filler material of the present invention is typically chosen and welding base metal composition phase according to the different and different of material to be welded
The alloy powder matched somebody with somebody.
It is identical that the enhancing phase granule of the present invention strengthens phase granule with mother metal；To avoid strengthening phase granule with laser or high temperature melting
Pond direct effect and there is scaling loss, and form new composite layer in weld seam and connect two mother metals.
The present invention includes following beneficial effect:
Using the method for laser powder-filled deposition-molten note, powder filler is separately introduced into weld seam with phase granule is strengthened, it is to avoid
Mixed-powder mechanical milling process during Preparatory work of experiment, and can be according to experimental conditions real-time regulation powder filler and enhancing phase
The feeding speed of grain and feeding amount.
Method of the present invention energy input controllable precise；It is convenient to adjust material component；Flexible big, high degree of automation；Most
Little characteristic size and heat input are limited solely by minimum spot size.In addition most distinguishing feature is to strengthen mutually to fill out using the method for molten note
Weld seam molten bath rear is charged to, not with laser energy direct effect, can avoid strengthening phase granule scaling loss as far as possible, while strengthening from temperature
The relatively low molten bath rear of degree is sent into, and can effectively suppress to strengthen dissolving of the phase granule in liquid metal.
Description of the drawings
Fig. 1 is laser deposition of the present invention-molten note synchronization composite joint schematic diagram；
Fig. 2 is the welding point metallograph of embodiment 1；
Fig. 3 is the welding point micro-organization chart of embodiment 1；
Fig. 4 is the welding point metallograph of embodiment 2；
Fig. 5 is the welding point micro-organization chart of embodiment 2.
Specific embodiment
Specific embodiment one：A kind of synchronous composite connecting method of laser deposition of present embodiment-molten note, it be according to
What following steps were carried out：
Step one：Double V-groove is processed into at the position to be welded of workpiece to be welded；
Step 2：Groove and neighbouring position surface are cleared up, polished, and is fixed on clamping workpiece to be welded with fixture
On workbench；
Step 3：Coaxial and paraxonic feeding head is installed, welding condition is set：
Laser power is 600W～5000W, and spot diameter is 1mm～4mm, and speed of welding is 3mm/s～15mm/s；Powder feeding
Speed is 2g/min～15g/min, and powder feeding carrier gas flux is 3L/min～20L/min, and it is 2g/ to strengthen phase granule injection rate
Min～20g/min, implant angle is 30 °～70 °, and shielding gas and line throughput are 5L/min；Laser head is along welding side
Turn forward 5 °；
Step 4：Powder filler is sent into position while welding using coaxial powder feeding head, generating device of laser execution step is controlled
Three technological parameter, produces laser beam, powder is melted under laser irradiation and forms molten bath；
Step 5：While coaxial feeding powder filler is welded, paraxonic feeding head is passed through to molten bath at the rear portion in molten bath
Middle injection strengthens phase granule, that is, complete described laser deposition-molten note synchronization composite joint.
Present embodiment mixs homogeneously powder filler with phase particle powder ball mill is strengthened, and mixing filling powder is obtained
End；Mixing powder filler is fitted in powder feeding machine；Wherein, the volume for mixing powder filler is more than workpiece weld groove position to be welded
Volume.
Mixing powder filler in powder filler with strengthen phase granule ratio according to matrix material in workpiece to be welded with enhancing
The ratio of phase mixes the body of the volume of powder filler more than matrix in metal-base composites to be welded and enhancing phase determining
Product.
Specific embodiment two：Present embodiment from unlike specific embodiment one：Transmitting laser laser instrument be
Semiconductor laser, CO2Gas laser, YAG solid state lasers or optical fiber laser.Other and the phase of specific embodiment one
Together.
Specific embodiment three：Present embodiment from unlike specific embodiment one：The technological parameter of step 3 is：
Laser power is 800W～5000W, and spot diameter is 1mm～4mm, and speed of welding is 3mm/s～15mm/s；Powder feed rate is
2g/min～15g/min, powder feeding carrier gas flux is 3L/min～20L/min, strengthen phase granule injection rate be 2g/min～
20g/min, implant angle is 30 °～70 °, and shielding gas and line throughput are 5L/min；Laser head is before welding direction
Incline 5 °.Other are identical with specific embodiment one.
Specific embodiment four：Present embodiment from unlike specific embodiment one：The technological parameter of step 3 is：
Laser power is 1000W～5000W, and spot diameter is 1mm～4mm, and speed of welding is 5mm/s～15mm/s；Powder feed rate is
5g/min～15g/min, powder feeding carrier gas flux is 5L/min～20L/min, strengthen phase granule injection rate be 5g/min～
20g/min, implant angle is 30 °～70 °, and shielding gas and line throughput are 5L/min；Laser head is before welding direction
Incline 5 °.Other are identical with specific embodiment one.
Specific embodiment five：Present embodiment from unlike specific embodiment one：The technological parameter of step 3 is：
Laser power is 2000W～5000W, and spot diameter is 1mm～4mm, and speed of welding is 8mm/s～15mm/s；Powder feed rate is
8g/min～15g/min, powder feeding carrier gas flux is 8L/min～20L/min, strengthen phase granule injection rate be 8g/min～
20g/min, implant angle is 30 °～70 °, and shielding gas and line throughput are 5L/min；Laser head is before welding direction
Incline 5 °.Other are identical with specific embodiment one.
Specific embodiment six：Present embodiment from unlike specific embodiment one：The technological parameter of step 3 is：
Laser power is 3000W～5000W, and spot diameter is 1mm～4mm, and speed of welding is 10mm/s～15mm/s；Powder feed rate is
10g/min～15g/min, powder feeding carrier gas flux is 10L/min～20L/min, strengthen phase granule injection rate be 10g/min～
20g/min, implant angle is 30 °～70 °, and shielding gas and line throughput are 5L/min；Laser head is before welding direction
Incline 5 °.Other are identical with specific embodiment one.
Specific embodiment seven：Present embodiment from unlike specific embodiment one：The technological parameter of step 3 is：
Laser power is 4000W～5000W, and spot diameter is 1mm～4mm, and speed of welding is 12mm/s～15mm/s；Powder feed rate is
12g/min～15g/min, powder feeding carrier gas flux is 15L/min～20L/min, strengthen phase granule injection rate be 15g/min～
20g/min, implant angle is 30 °～70 °, and shielding gas and line throughput are 5L/min；Laser head is before welding direction
Incline 5 °.Other are identical with specific embodiment one.
Specific embodiment eight：Present embodiment from unlike specific embodiment one：The technological parameter of step 3 is：
Laser power is 4500W, and spot diameter is 1mm～4mm, and speed of welding is 10mm/s；Powder feed rate is 10g/min, and powder feeding is carried
Throughput is 15L/min, and it is 15g/min to strengthen phase granule injection rate, and implant angle is 30 °～70 °, shielding gas and line
Throughput is 5L/min；Laser head leans forward 5 ° along welding direction.Other are identical with specific embodiment one.
Specific embodiment nine：Present embodiment from unlike specific embodiment one：The technological parameter of step 3 is：
Laser power is 3000W, and spot diameter is 1mm～4mm, and speed of welding is 15mm/s；Powder feed rate is 15g/min, and powder feeding is carried
Throughput is 20L/min, and it is 20g/min to strengthen phase granule injection rate, and implant angle is 30 °～70 °, shielding gas and line
Throughput is 5L/min；Laser head leans forward 5 ° along welding direction.Other are identical with specific embodiment one.
Specific embodiment ten：Present embodiment from unlike specific embodiment one：The technological parameter of step 3 is：
Laser power is 1000W, and spot diameter is 1mm～4mm, and speed of welding is 3mm/s；Powder feed rate is 3g/min, powder feeding carrier gas
Flow is 2L/min, and it is 3g/min to strengthen phase granule injection rate, and implant angle is 30 °～70 °, shielding gas and line air-flow
Amount is 5L/min；Laser head leans forward 5 ° along welding direction.Other are identical with specific embodiment one.
Specific embodiment 11：Present embodiment from unlike specific embodiment one：Described workpiece to be welded is
Metal-base composites, such as aluminum matrix composite, magnesium base composite material, titanium matrix composite or nickel-base composite material.Other
It is identical with specific embodiment one.
Present invention is not limited only to the content of the respective embodiments described above, the group of one of them or several specific embodiments
Contract sample can also realize the purpose invented.
Beneficial effects of the present invention are verified by following examples：
The Sip/ of laser powder-filled deposit weld method and method of the present invention 1mm thickness volume fraction 60% is respectively adopted
LD11 composites implement welding.
Embodiment 1
Laser powder-filled deposit weld method is as follows：
To Sip/LD11 composite processings to be welded into 80 × 40 × 1mm3, monolateral 30 ° of double V-grooves beat position to be welded
Mill cleaning, gapless is fixed on the table.
Laser instrument selects semiconductor laser, spot diameter 4mm that AlSi12 alloy powders and Si particle powders are pressed into 2:3
Spheroidal graphite uniformly makes mixing powder filler；Using domestic new loose monotubular powder feeder, with laser coaxial position while welding is sent into.Laser work(
Rate 1200W, speed of welding 5mm/s, powder feed rate 5g/min, powder feeding carrier gas flux 10L/min, shielding gas and line throughput
It is 5L/min.
Welding point metallographic and microstructure are as shown in Figures 2 and 3, it is seen then that joint macroscopic view shaping is preferable, there is undercut
Defect and a small amount of pore.The predominantly thicker block Si phases of microstructure and a (Al) solid solution, Si granule scaling loss is more serious.
Embodiment 2
A kind of laser deposition of the present embodiment-molten note synchronization composite connecting method, it is followed the steps below：
Laser instrument selects semiconductor laser, and powder feeder is bitubular powder feeder.After sheet material polishing cleaning to be welded, open monolateral
30 ° of double V-grooves, gapless docking.Laser power 1200W, speed of welding 5mm/s, powder feed rate 5g/min, powder feeding carrier gas flux
8L/min, enhancing phase granule injection rate scope 4g/min, 50 ° of implant angle scope, shielding gas and line throughput are
5L/min。
Powder filler is sent into position while welding using coaxial powder feeding head, powder filler material is according to the different of material to be welded
Difference, such as welding Si granules strengthen LD11 materials, and powder filler can be the mixed-powder of AlSi12 alloy powders and Si granules,
Can also be the mixed-powder of pure Al powder and Si granules, as Al：The ratio of Si alloy powders is needed according to strengthening phase in mother metal
Ratio-dependent, in the present embodiment condition, Al：Si alloy powders ratio can be 2:3-1:2.Control generating device of laser is held
The technological parameter of row step 3, produces laser beam, powder is melted under laser irradiation and forms molten bath；Powder filler is sent into coaxial
While welding, enhancing phase granule Si granules are injected in molten bath by paraxonic feeding head at the rear portion in molten bath.
The joint metallographic for carrying out Sip/LD11 composite plate welds using laser deposition-molten note synchronization composite connecting method shines
Piece and microstructure such as Fig. 4 and Fig. 5
It is shown, it is seen then that weld seam no significant defect, mother metal fusing amount is few, interface is clear.Seam organization is a (Al) solid solution
And the Si granules of Dispersed precipitate, compare that laser powder-filled deposit weld microstructure is more uniform fine and closely woven, reach the knot of anticipation
Really.
Embodiment 3
A kind of laser deposition of the present embodiment-molten note synchronization composite connecting method, it is followed the steps below：
Laser instrument selects optical fiber laser, and powder feeder is bitubular powder feeder.After sheet material polishing cleaning to be welded, monolateral 30 ° of V are opened
Type groove, gapless docking.Laser power 2000W, speed of welding 10mm/s, powder feed rate 10g/min, powder feeding carrier gas flux
15L/min, enhancing phase granule injection rate scope 8g/min, 50 ° of implant angle scope, shielding gas and line throughput are
5L/min。
Powder filler is sent into position while welding using coaxial powder feeding head, powder filler material is according to the different of material to be welded
Difference, such as welding Si granules strengthen LD11 materials, and powder filler can be the mixed-powder of AlSi12 alloy powders and Si granules,
Can also be the mixed-powder of pure Al powder and Si granules, as Al：The ratio of Si alloy powders is needed according to strengthening phase in mother metal
Ratio-dependent, in this condition, Al：Si alloy powders ratio can be 2:3-1:2., control generating device of laser and perform step
Rapid three technological parameter, produces laser beam, powder is melted under laser irradiation and forms molten bath；Powder filler welding is sent into coaxial
While, enhancing phase Si granule is injected in molten bath by paraxonic feeding head at the rear portion in molten bath.
Embodiment 4
A kind of laser deposition of the present embodiment-molten note synchronization composite connecting method, it is followed the steps below：
Laser instrument selects optical fiber laser, and powder feeder is bitubular powder feeder.After sheet material polishing cleaning to be welded, monolateral 30 ° of V are opened
Type groove, gapless docking.Laser power 5000W, speed of welding 5mm/s, powder feed rate 5g/min, powder feeding carrier gas flux 5L/
Min, enhancing phase granule injection rate scope 8g/min, 50 ° of implant angle scope, shielding gas and line throughput are 5L/
min。
Powder filler powder filler material is sent into according to the different of material to be welded to position while welding using coaxial powder feeding head
Difference, such as welding Si granules strengthen LD11 materials, and powder filler can be the mixed-powder of AlSi12 alloy powders and Si granules,
Can also be the mixed-powder of pure Al powder and Si granules, as Al：The ratio of Si alloy powders is needed according to strengthening phase in mother metal
Ratio-dependent, in this condition, Al：Si alloy powders ratio can be 2:3-1:2.Control generating device of laser execution step
Three technological parameter, produces laser beam, powder is melted under laser irradiation and forms molten bath；Send into what powder filler was welded coaxial
Meanwhile, enhancing phase Si granule is injected in molten bath by paraxonic feeding head at the rear portion in molten bath.
Embodiment 5
A kind of laser deposition of the present embodiment-molten note synchronization composite connecting method, it is followed the steps below：
Laser instrument selects optical fiber laser, and powder feeder is bitubular powder feeder.After sheet material polishing cleaning to be welded, monolateral 30 ° of V are opened
Type groove, gapless docking.Laser power 4000W, speed of welding 15mm/s, powder feed rate 15g/min, powder feeding carrier gas flux
15L/min, enhancing phase granule injection rate scope 8g/min, 50 ° of implant angle scope, shielding gas and line throughput are
5L/min。
Powder filler powder filler material is sent into according to the different of material to be welded to position while welding using coaxial powder feeding head
Difference, such as welding Si granules strengthen LD11 materials, and powder filler can be the mixed-powder of AlSi12 alloy powders and Si granules,
Can also be the mixed-powder of pure Al powder and Si granules, as Al：The ratio of Si alloy powders is needed according to strengthening phase in mother metal
Ratio-dependent, in this condition, Al：Si alloy powders ratio can be 2:3-1:2.Control generating device of laser execution step
Three technological parameter, produces laser beam, powder is melted under laser irradiation and forms molten bath；Send into what powder filler was welded coaxial
Meanwhile, enhancing phase particulates reinforcements Si granules are injected in molten bath by paraxonic feeding head at the rear portion in molten bath.Above example
Method energy input controllable precise；It is convenient to adjust material component；Flexible big, high degree of automation；Minimum feature size and heat
Input is limited solely by minimum spot size.In addition most distinguishing feature is to strengthen mutually to be filled into behind weld seam molten bath using the method for molten note
Side, not with laser energy direct effect, can avoid strengthening phase granule scaling loss, while strengthening from after the relatively low molten bath of temperature as far as possible
Side sends into, and can effectively suppress to strengthen dissolving of the phase granule in liquid metal.
Claims (10)
1. the synchronous composite connecting method of a kind of laser deposition for metal-base composites-molten note, it is characterised in that it be by
Carry out according to following steps：
Step one：Double V-groove is processed into at the position to be welded of workpiece to be welded；
Step 2：Groove and neighbouring position surface are cleared up, polished, and clamping workpiece to be welded is fixed on into work with fixture
On platform；
Step 3：Coaxial and paraxonic feeding head is installed, welding condition is set：
Laser power is 600W～5000W, and spot diameter is 1mm～4mm, and speed of welding is 3mm/s～15mm/s；Powder feed rate
For 2g/min～15g/min, powder feeding carrier gas flux is 3L/min～20L/min, strengthen phase granule injection rate be 2g/min～
20g/min, implant angle is 30 °～70 °, and shielding gas and line throughput are 5L/min；Laser head is before welding direction
Incline 5 °；
Step 4：Powder filler is sent into position while welding using coaxial powder feeding head, generating device of laser execution step three is controlled
Technological parameter, produces laser beam, powder is melted under laser irradiation and forms molten bath；
Step 5：While coaxial feeding powder filler is welded, noted in molten bath by paraxonic feeding head at the rear portion in molten bath
Enter to strengthen phase granule, that is, complete described laser deposition-molten note synchronization composite joint.
2. the synchronous composite joint side of a kind of laser deposition for metal-base composites according to claim 1-molten note
Method, it is characterised in that the laser instrument of transmitting laser is semiconductor laser, CO2Gas laser, YAG solid state lasers or optical fiber
Laser instrument.
3. the synchronous composite joint side of a kind of laser deposition for metal-base composites according to claim 1-molten note
Method, it is characterised in that the technological parameter of step 3 is：Laser power is 800W～5000W, and spot diameter is 1mm～4mm, is welded
Speed is 3mm/s～15mm/s；Powder feed rate is 2g/min～15g/min, and powder feeding carrier gas flux is 3L/min～20L/min,
It is 2g/min～20g/min to strengthen phase granule injection rate, and implant angle is 30 °～70 °, and shielding gas and line throughput are equal
For 5L/min；Laser head leans forward 5 ° along welding direction.
4. the synchronous composite joint side of a kind of laser deposition for metal-base composites according to claim 2-molten note
Method, it is characterised in that the technological parameter of step 3 is：Laser power is 1000W～5000W, and spot diameter is 1mm～4mm, is welded
Speed is connect for 5mm/s～15mm/s；Powder feed rate is 5g/min～15g/min, and powder feeding carrier gas flux is 5L/min～20L/
Min, it is 5g/min～20g/min to strengthen phase granule injection rate, and implant angle is 30 °～70 °, shielding gas and line air-flow
Amount is 5L/min；Laser head leans forward 5 ° along welding direction.
5. the synchronous composite joint side of a kind of laser deposition for metal-base composites according to claim 4-molten note
Method, it is characterised in that the technological parameter of step 3 is：Laser power is 2000W～5000W, and spot diameter is 1mm～4mm, is welded
Speed is connect for 8mm/s～15mm/s；Powder feed rate is 8g/min～15g/min, and powder feeding carrier gas flux is 8L/min～20L/
Min, it is 8g/min～20g/min to strengthen phase granule injection rate, and implant angle is 30 °～70 °, shielding gas and line air-flow
Amount is 5L/min；Laser head leans forward 5 ° along welding direction.
6. the synchronous composite joint side of a kind of laser deposition for metal-base composites according to claim 5-molten note
Method, it is characterised in that the technological parameter of step 3 is：Laser power is 3000W～5000W, and spot diameter is 1mm～4mm, is welded
Speed is connect for 10mm/s～15mm/s；Powder feed rate is 10g/min～15g/min, and powder feeding carrier gas flux is 10L/min～20L/
Min, it is 10g/min～20g/min to strengthen phase granule injection rate, and implant angle is 30 °～70 °, shielding gas and line gas
Flow is 5L/min；Laser head leans forward 5 ° along welding direction.
7. the synchronous composite joint side of a kind of laser deposition for metal-base composites according to claim 6-molten note
Method, it is characterised in that the technological parameter of step 3 is：Laser power is 4000W～5000W, and spot diameter is 1mm～4mm, is welded
Speed is connect for 12mm/s～15mm/s；Powder feed rate is 12g/min～15g/min, and powder feeding carrier gas flux is 15L/min～20L/
Min, it is 15g/min～20g/min to strengthen phase granule injection rate, and implant angle is 30 °～70 °, shielding gas and line gas
Flow is 5L/min；Laser head leans forward 5 ° along welding direction.
8. the synchronous composite joint side of a kind of laser deposition for metal-base composites according to claim 7-molten note
Method, it is characterised in that the technological parameter of step 3 is：Laser power is 4500W, and spot diameter is 1mm～4mm, and speed of welding is
10mm/s；Powder feed rate is 10g/min, and powder feeding carrier gas flux is 15L/min, and it is 15g/min to strengthen phase granule injection rate, is noted
It is 30 °～70 ° to enter angle, and shielding gas and line throughput are 5L/min；Laser head leans forward 5 ° along welding direction.
9. the synchronous composite joint side of a kind of laser deposition for metal-base composites according to claim 8-molten note
Method, it is characterised in that the technological parameter of step 3 is：Laser power is 3000W, and spot diameter is 1mm～4mm, and speed of welding is
15mm/s；Powder feed rate is 15g/min, and powder feeding carrier gas flux is 20L/min, and it is 20g/min to strengthen phase granule injection rate, is noted
It is 30 °～70 ° to enter angle, and shielding gas and line throughput are 5L/min；Laser head leans forward 5 ° along welding direction.
10. the synchronous composite joint side of a kind of laser deposition for metal-base composites according to claim 9-molten note
Method, it is characterised in that the technological parameter of step 3 is：Laser power is 1000W, and spot diameter is 1mm～4mm, and speed of welding is
3mm/s；Powder feed rate is 3g/min, and powder feeding carrier gas flux is 2L/min, strengthens phase granule injection rate for 3g/min, injector angle
Spend for 30 °～70 °, shielding gas and line throughput are 5L/min；Laser head leans forward 5 ° along welding direction.
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| CN106694888B (en) * | 2016-12-31 | 2019-01-18 | 广东明路电力电子有限公司 | Cylinder metal foam welding procedure and metal foam sheets roughening process |
| CN109483071B (en) * | 2018-12-27 | 2021-01-26 | 长沙理工大学 | Method for laser-friction stir composite welding of large-thickness plate |
| CN109570765B (en) * | 2019-01-04 | 2020-12-18 | 沈阳工业大学 | Manufacturing method for laser material increase connection of titanium alloy and nickel-based superalloy |
| CN113146042B (en) * | 2021-03-12 | 2022-10-18 | 中国工程物理研究院材料研究所 | Laser welding B capable of effectively reducing welding holes 4 Method for producing C/Al |
| CN113664218A (en) * | 2021-08-31 | 2021-11-19 | 北京煜鼎增材制造研究院有限公司 | Composite manufacturing method of ultra-large metal structure |
| CN114147353A (en) * | 2021-12-01 | 2022-03-08 | 华东交通大学 | Laser powder filling welding method for SiCp/Al-based composite material |
| CN114273662A (en) * | 2021-12-19 | 2022-04-05 | 南京理工大学 | Laser deposition-based thick plate high-nitrogen steel connecting method |
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