CN108796496A - For in the system and method for substrate deposit coating - Google Patents
For in the system and method for substrate deposit coating Download PDFInfo
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- CN108796496A CN108796496A CN201710307647.2A CN201710307647A CN108796496A CN 108796496 A CN108796496 A CN 108796496A CN 201710307647 A CN201710307647 A CN 201710307647A CN 108796496 A CN108796496 A CN 108796496A
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- energy beam
- electrode
- dusty material
- powder feeding
- feeding channel
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
Abstract
The present invention relates to a kind of in the system and method for substrate deposit coating, system includes energy source and electric spark deposition device.The energy source is used for providing energy beam, which is selected from laser beam, electron beam, ion beam and combination thereof.The electric spark deposition device includes energy beam passage, powder feeding channel and electrode, wherein, the energy beam passage is used for that the energy beam is allowed to pass through, the powder feeding channel is used for conveying the dusty material that can be deposited on and form depositing coating in described matrix, the shared pathway communicated with the energy beam passage and powder feeding channel is equipped in the electrode, the shared pathway can allow the dusty material and the energy beam to enter the discharging gap between the electrode and described matrix after wherein passing through, and the dusty material is at least partly melted during by the shared pathway by the energy beam.
Description
Technical field
The present invention relates to a kind of system and methods being used in substrate deposit coating, and in particular to a kind of to be used in combination
The system and method for electric spark and energy beam.
Background technology
Metal and alloying element in various commercial Applications often need to carry out certain coating or welding operation, for example,
Fuel nozzle for gas-turbine unit after used a period of time, may degenerate in its edge, thus
The method with plated film or depositing coating is needed to be repaired.
Electric spark deposition (ESD) is a kind of pulse micro-arc cold welding technique, with the short pulse of high peak current electrode material
Base metal surface is deposited to, micro electrode material melts under the action of impulse plasma arc and quickly consolidates in matrix surface
Change forms coating, and coating is in metallurgical binding with matrix skin material.Pulse used in electric spark deposition technique is several milliseconds,
Range of the pulse frequency at 0.1 to 4 kilo hertz so that metallic matrix rate of heat dissipation can reach 99%, therefore, electric spark deposition technique with
The advantage of its minimum heat input is different from other arc-welding processing procedures.Due to there is no the problem of welding heat affected zone, Er Qieyou
Easy to carry, the using flexible in electric spark deposition equipment both can carry out local route repair to part or equipment surface, also can be to one
As geometry plane or curved surface, as the position easy to wear of cutter, mold carry out coating processing to improve hardness and wearability.
Therefore, electric spark deposition has prodigious advantage in the application of workpiece plated film or reparation.
However, electric spark deposition technique also have the shortcomings that it is certain, to limit its use scope.For example, the technique is usual
It is manual operation, it is difficult to the quality of coating is controlled, further, since electric spark is a kind of heat source of low energy, electric spark deposition work
For skill in the reparation for larger area, not only deposition velocity is slow but also cost is too high.
Come in substrate deposit coating therefore, it is necessary to develop a kind of improved new system and method.
Invention content
On the one hand the embodiment of the present invention provides a kind of composite coating system being used in substrate deposit coating.This is
System includes energy source and electric spark deposition device.The energy source be used for energy beam is provided, the energy beam be selected from laser beam,
Electron beam, ion beam and combination thereof.The electric spark deposition device includes energy beam passage, powder feeding channel and electrode,
In, the energy beam passage is used for that the energy beam is allowed to pass through, and the powder feeding channel is used for conveying and being deposited in described matrix
The dusty material of depositing coating is formed, the electrode is interior common logical equipped with what is communicated with the energy beam passage and powder feeding channel
Road, the shared pathway can allow the dusty material from the powder feeding channel and the energy beam from the energy beam passage from wherein
By the rear discharging gap between the electrode and described matrix, and make the dusty material common logical by this
It is at least partly melted by the energy beam during road.
On the other hand the embodiment of the present invention provides a kind of electric spark deposition device, the device include energy beam passage,
Powder feeding channel and electrode, wherein the energy beam passage is used for that the energy beam is allowed to pass through, which is selected from laser beam, electricity
Beamlet, ion beam and combination thereof, the powder feeding channel are used for conveying the powder that can be deposited on and form depositing coating on matrix
Material, the electrode is interior to be equipped with the shared pathway communicated with the energy beam passage and powder feeding channel, which, which can allow, comes
From the dusty material in the powder feeding channel and the energy beam from the energy beam passage enters the electrode after wherein passing through
Discharging gap between described matrix, and make the dusty material during by the shared pathway at least partly
It is melted by the energy beam.
On the other hand the embodiment of the present invention provides a kind of method for composite coating being used in substrate deposit coating.It should
Method includes：Keep the channel that dusty material and energy beam are formed in commonly through one in the electrode of electric spark deposition device laggard
Enter the discharging gap between the electrode and described matrix；In the dusty material and energy beam commonly through in the electrode
During channel, the dusty material is made at least partly to be melted by the energy beam；And it in the energy beam and described puts
Under the collective effect of electric spark in electric gap, by the dusty material being at least partly melted in the channel in the electrode
It deposits in described matrix.
Description of the drawings
The embodiment of the present invention is described in conjunction with the accompanying drawings, the present invention may be better understood, in the accompanying drawings：
Fig. 1 is a kind of schematic diagram of high energy beam-electro-spark deposition system in one embodiment of the present of invention.
Fig. 2 is a kind of schematic diagram of laser-electro-spark deposition system in one embodiment of the present of invention.
Fig. 3 shows the microstructure for being formed by coating and the combination situation of itself and matrix.
Specific implementation mode
The specific implementation mode of the present invention will be described in detail below.In order to avoid excessive unnecessary details,
Known structure or function will be described in detail in the following contents.
An aspect of of the present present invention is related to a kind of system being used in substrate deposit coating, which has been used in combination electrical fire
Dusty material is deposited to as composite heat power supply and forms coating on matrix by flower and high-energy beam.Below with reference to attached Fig. 1 and 2
The specific implementation mode of the composite heat power supply system is described in citing.
Fig. 1 shows that a kind of schematic diagram of composite heat power supply system 100, the composite heat power supply system 100 include electrode 102, uses
To form deposited plating layer on matrix 200 by electric spark deposition.It is equipped with powder feeding channel 104 in the electrode 102 and energy beam is logical
Road 106 is respectively intended to introduce powder in the discharging gap 110 between the front end of the electrode 102 108 and described matrix 200
Material 114 and energy beam 116.The energy beam 116 can be laser beam, electron beam, ion beam or combination thereof.The electricity
Pole 102 and matrix 200 are connected to the positive and negative electrode of power supply 150, when in use, can be by power supply 150 to the electrode 102
Apply certain voltage with matrix 200, and by electrode front end 108 close to matrix 200 so that between the electrode 102 and matrix 200
Discharging gap 110 in generate spark discharge, the dusty material 114 into the discharging gap 110 forms small series electrical
Pole, the powder and electrode material of fusing are transferred to 200 surface of matrix to form depositing coating.In some embodiments, between electric discharge
Voltage between gap is between 50~150V, or further, between 100~150V.The energy beam may be from energy
Amount source (not shown), for example, the energy beam can be the laser beam for coming from laser generator, the system can further comprise
Laser generator, for providing the laser beam.
The setting in the powder feeding channel 104 and the energy beam passage 106 makes the dusty material 114 described in entrance
It meets with the energy beam 116 before discharging gap 110, so that the dusty material 114 can be between entering the electric discharge
It is at least partly melted by the energy beam 116 before gap 110.Specifically, in some embodiments, 104 He of powder feeding channel
Energy beam passage 106 interconnects in electrode 102 at a joint 118 of the electrode front end 108, then converges
The dusty material 114 and energy beam 116 shared pathway 120 through them together can be allowed by being formed together, this is common logical
Road 120 is connected to the exterior space of the joint 118 and the electrode front end 108, so as to be connected to the joint 118 and institute
Discharging gap 110 is stated, such setting may make dusty material 114 and energy beam 116 to meet at joint 118, then together
Enter discharging gap 110 by shared pathway 120, is at least partly melted in this process by energy beam 116.As shown in Figure 1, institute
The joint 118 of powder feeding channel 104 and energy beam passage 106 is stated inside electrode 102, dusty material flows from joint 118
To at least partly being melted by energy beam during discharging gap 110, discharging gap 110 is entered back into.In addition, the energy beams such as laser
Induced discharge and so that the discharge effect more concentrated, therefore, the composite heat power supply system 100 are also acted as into discharging gap 110
Take full advantage of the heat of energy beam and electric spark, it can be achieved that low_input_power high energy efficiency powder deposition process, it is high-quality to be formed
The coating of amount.
If can so that dusty material 114 enter discharging gap 110 before meet with energy beam 116 and at least partly by
Energy beam 116 preheats and local melting, and the location and shape of the powder feeding channel 104 and energy beam passage 106 can flexibly be set
It sets.In some embodiments, the powder feeding channel 104 and energy beam passage 106 are coaxially disposed, that is, 104 He of powder feeding channel
The setting of energy beam passage 106 may make central axis and the center of powder stream (dusty material flows the powder stream to be formed)
The axis of energy beam substantially overlaps.In some embodiments, the energy beam passage 106 includes the axial direction along the electrode 102
Axially extending through-hole, the powder feeding channel 104 surround the energy beam passage 106.Specifically, the powder feeding channel 104 can
Include around the annular channel of the energy beam passage 106 or multiple holes, slot etc..It is described in some specific embodiments
Powder feeding channel 104 includes the circle angling hole around the energy beam passage 106, these angling holes are relative to the energy
The central axis of beam passage 106 tilts, and is connected with the energy beam passage 106.It is described in some specific embodiments
Powder feeding channel 104 includes the inverted conical shape annular channel around the energy beam passage, the inverted conical shape annular channel and the energy
Beam passage 106 is coaxial and is connected with the energy beam passage.
Between watt level, the joint 118 and the electrode front end 108 that can be by controlling the energy beam away from
From (in some embodiments, the distance be it is described can allow dusty material and energy beam commonly through shared pathway 120 axial direction
Length), it should to avoid at least partly being blocked by the dusty material of energy beam fusing described in the shared pathway 120
Shared pathway.In some embodiments, using the relatively low energy beam of power, apply to avoid to the dusty material
Excessive heat thus prevents dusty material to block the shared pathway 120.In some specific embodiments, the energy
The power for measuring beam is less than or equal to 500 watts, or further, in 100 watts to 500 watts of range.In some embodiments, described to send
The distance between the joint 118 of powder channel 104 and energy beam passage 106 and the electrode front end 108 are up to about 20 at about 5 millimeters
The range of millimeter, or further, in about 10 millimeters to about 16 millimeters of range.
In some embodiments, the radial dimension of the energy beam passage and shared pathway is more than the beam spot of the energy beam
Size so that the madial wall of the energy beam and the energy beam passage and shared pathway has certain distance, to encounter
The madial wall, the madial wall that energy beam passage is applied to avoid the energy beam bring adverse effect.In some embodiments,
The distance between the energy beam and the madial wall of energy beam passage are at least 0.1 millimeter, or further, at least 0.2 milli
Rice, for example, can be between 0.2 millimeter to 0.5 millimeter.In a specific embodiment, the beam spot diameter, of the energy beam is about
It it is 1 millimeter, the internal orifice dimension of the energy beam passage is about 1.5 millimeters.
The material for being possibly used for making the electrode includes but not limited to copper, stainless steel, nickel-base alloy, tungsten and graphite etc..
In some embodiments, the high high-melting-point conductive material of the electrode utilisable energy beam reflectivity is made, alternatively, at least described
The inside of energy beam passage, that is, the high high-melting-point conductive material layer of the reflectivity is coated on the side wall of the energy beam.
In some specific embodiments, the energy beam is laser beam, and the high high-melting-point conductive material of the energy beam reflectivity is
The high high-melting-point conductive material of laser reflectivity, including but not limited to red copper, tungsten etc..
The material for possibly serving for the powder includes but not limited to stainless steel, nickel-base alloy, nickel package alumina etc..The electricity
The material of pole and powder possibility is identical may also be different.The dusty material can use carrier gas to convey, and carrier gas used can be with
It is reactant gas, such as oxygen can also be inert gas, such as argon gas.In some embodiments, the flow velocity of the dusty material
Between 1~3 gram/minute, or further, between 1~1.5 gram/minute.In some embodiments, dusty material
The flow velocity of carrier gas is between 5~15 liters/min, or further, between 5~10 liters/min.
Fig. 2 shows a kind of longitudinal direction of a part for composite heat power supply system 300 using laser beam in one embodiment
Schematic cross-section, this schematically shows the general configuration of electrode, nozzle and laser channeling, some connections is omitted in figure
Device and part detailed structure.As shown in Fig. 2, the system 300 includes laser condensing lens 301, laser transmission apparatus 302, spray
Head agent structure 306, electrode tip 314 and electrode tip clamping device 312.Wherein, the laser condensing lens 301 are used for focusing coming from
The laser beam of laser generator (not shown), the laser transmission apparatus 302 are interior poly- from laser to allow equipped with laser channeling 304
The laser of burnt mirror 301 passes through.The nozzle body structure 306 is equipped with stomata 308, for leading to camera lens to the focus lamp 301
Protect gas to protect the focus lamp 301.In some embodiments, the laser transmission apparatus 302 and the nozzle body structure
The structure being set with by sleeve between 306 is assembled, and is had Telescopic, can be adjusted two by the Telescopic
The axial overall length of person, to adjust the distance between laser condensing lens 301 and matrix (not shown).
The clamping device 312 is used for that the electrode tip 314 is clamped, and it can be connected with motor (not shown), in motor
Lower band moving electrode head 314 is driven to move, for example, driving rotation of electrode tip 314 etc..It usually, also can be by the clamping device 312
It is collectively referred to as electrode with the electrode tip 314 for being fixed on clamping device 312, is set by what clamping device 312 and electrode tip 314 detached
It sets, electrode tip is only needed to change in the case where electrode tip is lost and may continue to use, without replacing entire electrode.
Powder feeding channel 310 is additionally provided between the clamping device 312 and nozzle body structure 306, for conveying powder into electrode tip 314
Powder material.Through-hole 316 is set in the electrode tip 314, can be used as the shared pathway of dusty material and laser, is allowed from powder feeding channel
Enter electrode tip 314 and matrix together after the effect of crossing wherein of 310 dusty material and laser from laser condensing lens 301
Between discharging gap.In some specific embodiments, the through-hole 316 along the rotary shaft of the electrode tip 314 side
To through the electrode tip 314, or further, the entire electrode is also extended through.
In deposition process, dusty material is transported to the through-hole 316 in electrode tip 314 by powder feeding channel, and by being somebody's turn to do
Through-hole 316 enters the discharging gap between electrode tip and matrix, and laser beam (or other energy beams) is also entered by laser channeling
Through-hole 316 in electrode tip 314, and enter discharging gap by the through-hole 316.In dusty material and laser beam by described logical
During hole 316, dusty material by laser beam preheat and at least partly dusty material is melted by laser beam, then laser and
This is preheated and the dusty material of local melting is all introduced into discharging gap, and using electrode as anode, matrix is cathode, between electric discharge
Spark discharge is generated in gap, meanwhile, the laser into discharging gap plays the role of triggering and reinforces electric discharge, in the process
Dusty material between the electrode and matrix forms small series connection electrode, and the powder and electrode material of fusing are transferred to matrix table
Face forms deposited plating layer.Under the collective effect of the laser and electric spark, the dusty material at least partly melted is sunk
Deposited plating layer is formed in product to described matrix.Very strong metallurgical junction resultant force is formed between the deposited plating layer and matrix.
Due to the addition of powder so that the discharging gap between electrode and matrix can increase, so as to be reduced or avoided
The abrasion of electrode.In addition, laser-induced plasma makes discharging gap that can further increase.With traditional electric spark deposition
System is compared, and in foregoing composite heat power supply depositing system, discharging gap significantly increases, so that entire deposition process
It is more controllable.In some embodiments, the distance between electrode and matrix (discharging gap) be between 0.1~0.5mm, or more into
One step, between 0.3~0.5mm.
In addition, the addition of powder is so that the consumption rate of electrode substantially reduces, in some embodiments, when the enough powder of use
When last, electrode can not consumed.In some embodiments, if electrode is different with the material of powder, and it is desirable that only by powder material
Material rather than deposit electrode material can use high-melting-point electrode material such as tungsten electrode or on the electrode plating in advance when on matrix
Upper dusty material is to avoid pollution.In addition, since heat input is low, the composite heat power supply system can also will be in some traditional handicrafts
Think not solderable material, such as the nickel base superalloy containing higher titanium aluminium content, deposits on matrix and form high quality painting
Layer.
The energy beams such as laser play the role of triggering, reinforcement, guiding electric spark, so as to eliminate some spuious electric discharges
(stray discharging) simultaneously improves deposition rate.Further, since in dusty material and energy beam together by electrode
During channel, energy of the dusty material constant absorption from energy beam is preheated or local melting, can improve energy beam
Capacity usage ratio and improve deposition efficiency.In addition, powder feeding channel and energy beam passage are coaxially disposed simultaneously in the depositing system
A shared pathway is finally converged to, to allow powder and energy beam to be come out from electrode together and enter discharging gap so that heavy
Product process does not have directionality, and dusty material and energy beam can be allowed to be easier to enter discharge channel, to improve deposition effect
Rate.As it can be seen that the deposition is the advantage that system and method combine laser and electric spark deposition, to realize higher deposition rate
With lower heat input, better deposition effect is obtained.
Example
In this example, powder sedimentation experiment is carried out by composite heat power supply depositing system as shown in Figure 2, by particle
Size is that 45~75 microns of high-temperature nickel-based 108 powder of superalloy Rene deposits to 108 matrixes of Rene that thickness is 2 millimeters
On.Wherein, lasing light emitter used in the depositing system be optical fiber laser, electrode tip used be an outer diameter be 5 millimeters, it is interior
The hollow copper electrode that diameter is 2 millimeters.The experiment carries out in following condition：
Laser power：150-200W；
Defocus：20mm；
Discharging gap (the distance between electrode and matrix)：0.5mm；
Powder feeding rate：3g/min；
Electrode voltage：100V, IGBT electric spark deposition power supply；
Frequency：100Hz；
Pulsewidth：1ms；
Matrix movement speed (Scanning speed):2mm/s；
Electrode rotating speed：1000r/min；
Flow rate of carrier gas：5l/min.
Since the percent of total of aluminium and titanium in Rene 108 is high, welding and strain-age cracking, Rene 108 can be caused
It is typically considered a kind of not solderable alloy, but in this experiment, by the composite heat power supply depositing system for having used laser,
108 dusty materials of Rene are deposited to the deposition efficiency for foring coating on matrix, and having reached about every layer of 0.5mm by success.
Fig. 3 shows the microstructure for being formed by coating 402 and the combination situation of itself and matrix 404, as shown in figure 3, coating 402
Have no apparent micro-crack, be well combined between coating 402 and matrix 404, and since heat input is small, matrix 404 has no bright
Aobvious heat affected layer.
Although the present invention is described in conjunction with the specific embodiments, it will be appreciated by those skilled in the art that right
The present invention can be with many modifications may be made and modification.It is therefore contemplated that claims are intended to be covered in the present invention very
All such modifications and modification in positive conception and scope.
Claims (11)
1. a kind of system being used in substrate deposit coating comprising：
Energy source, for providing energy beam, which is selected from laser beam, electron beam, ion beam and combination thereof；And
Electric spark deposition device comprising energy beam passage, powder feeding channel and electrode, wherein the energy beam passage is used for allowing
The energy beam passes through, and the powder feeding channel is used for conveying the powder material that can be deposited on and form the depositing coating in described matrix
Material, the electrode is interior to be equipped with the shared pathway communicated with the energy beam passage and powder feeding channel, which can allow and come from
The dusty material in the powder feeding channel and energy beam from the energy beam passage enter after wherein passing through the electrode and
Discharging gap between described matrix, and make the dusty material during by the shared pathway at least partly by
The energy beam fusing.
2. the system as claimed in claim 1, wherein the axial length of the shared pathway is at about 5 millimeters to about 20 millimeters
Range.
3. the system as claimed in claim 1, wherein the shared pathway include along the electrode axially extending axial direction it is logical
Hole.
4. the system as claimed in claim 1, wherein the energy beam passage is coaxially communicated with the shared pathway, described to send
Powder channel surrounds the energy beam passage.
5. the system as claimed in claim 1, wherein the powder feeding channel includes multiple inclinations around the energy beam passage
Hole, these angling holes are axially inclined relative to the energy beam passage.
6. the system as claimed in claim 1, wherein the powder feeding channel includes the inverted conical shape ring around the energy beam passage
Shape channel, the inverted conical shape annular channel and the energy beam passage are coaxial.
7. the system as claimed in claim 1, wherein the electrode includes electrode tip and electrode tip clamping device, the electrode
Head is detachably secured to the electrode tip clamping device, and the electrode tip clamping device can drive the electrode tip to move.
8. a kind of electric spark deposition device comprising：
Energy beam passage, for allowing energy beam to pass through, which is selected from laser beam, electron beam, ion beam and combination thereof；
Powder feeding channel can be deposited on the dusty material that depositing coating is formed on matrix for conveying；And
Electrode, interior to be equipped with the shared pathway communicated with the energy beam passage and powder feeding channel, which can allow and come from
The dusty material in the powder feeding channel and energy beam from the energy beam passage enter after wherein passing through the electrode and
Discharging gap between described matrix, and make the dusty material during by the shared pathway at least partly by
The energy beam fusing.
9. a kind of method being used in substrate deposit coating comprising：
Enter institute after making the channel that dusty material and energy beam be formed in commonly through one in the electrode of electric spark deposition device
State the discharging gap between electrode and described matrix；
During the dusty material and energy beam are commonly through channel in the electrode, make the dusty material at least
It is melted by the energy beam part；And
Under the collective effect of electric spark in the energy beam and the discharging gap, by the channel in the electrode
The dusty material being at least partly melted deposits in described matrix.
10. method as claimed in claim 9 further comprises triggering electricity by the energy beam in the discharging gap
Spark.
11. system as claimed in claim 9, wherein the power of the energy beam is less than or equal to 500 watts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307647.2A CN108796496A (en) | 2017-05-04 | 2017-05-04 | For in the system and method for substrate deposit coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307647.2A CN108796496A (en) | 2017-05-04 | 2017-05-04 | For in the system and method for substrate deposit coating |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320857A (en) * | 1992-05-15 | 1993-12-07 | Sumitomo Metal Ind Ltd | Plasma thermal spraying method |
| JP2002011585A (en) * | 2000-06-28 | 2002-01-15 | Yoshiteru Hosoda | Fusion working device using laser beam and arc |
| US20040262269A1 (en) * | 2001-09-13 | 2004-12-30 | Olivier Matile | Hybrid laser-arc welding method with gas flow rate adjustment |
| US20140065320A1 (en) * | 2012-08-30 | 2014-03-06 | Dechao Lin | Hybrid coating systems and methods |
-
2017
- 2017-05-04 CN CN201710307647.2A patent/CN108796496A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320857A (en) * | 1992-05-15 | 1993-12-07 | Sumitomo Metal Ind Ltd | Plasma thermal spraying method |
| JP2002011585A (en) * | 2000-06-28 | 2002-01-15 | Yoshiteru Hosoda | Fusion working device using laser beam and arc |
| US20040262269A1 (en) * | 2001-09-13 | 2004-12-30 | Olivier Matile | Hybrid laser-arc welding method with gas flow rate adjustment |
| US20140065320A1 (en) * | 2012-08-30 | 2014-03-06 | Dechao Lin | Hybrid coating systems and methods |
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