CN108220951A - A kind of ultrahigh speed laser melting coating system - Google Patents
A kind of ultrahigh speed laser melting coating system Download PDFInfo
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- CN108220951A CN108220951A CN201711405746.0A CN201711405746A CN108220951A CN 108220951 A CN108220951 A CN 108220951A CN 201711405746 A CN201711405746 A CN 201711405746A CN 108220951 A CN108220951 A CN 108220951A
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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
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
Abstract
The invention belongs to field of laser processing, specially a kind of ultrahigh speed laser melting coating system.The system is characterized in that using the high speed rotation of workpiece, ultrahigh speed laser melting coating linear velocity is obtained, by the interaction of laser and powder, the adjustment of systematic parameter is arranged in pairs or groups, and fine and close cladding layer is formed in workpiece surface.The present invention improves decades of times compared with conventional laser cladding efficiency, and the cladding layer obtained is complete metallurgical binding, and surface smoothness is high, and stock utilization is high, and energy consumption is few, can greatly save production cost, improves production efficiency.
Description
Technical field
The present invention relates to a kind of ultrahigh speed laser melting coating system and method, belong to field of laser processing.
Background technology
In engineering machinery field, many axis eka-gold metal elements have surface the requirements such as anti-corrosion, wearability, and it is special to need to carry out
Processing, common processing system have following a few classes.
First, electroplating technology, this technology coating is thin, is usually no more than 100 μm, therefore be easy under the conditions of special operation condition
Lead to entire part failure since local coating is damaged.And coating is weak with basal body binding force, is usually no more than 100MPa, it is corrosion-resistant
Property it is poor, easily peel off.The serious wasting of resources and environmental pollution are also caused, is the industry that there is an urgent need to discongest.
2nd, plasma spray technology is mechanical bond between this technology coating and matrix, and binding force is weak, generally 100 ~
200MPa is easily peeled off.Since coating stomata prepared by thermal spraying is more, it is necessary to be prepared using plane SH wave mode (every layer big
About 25-50 μ m-thicks), processing efficiency is caused to reduce.And process dusty material and gas consumption are larger, stock utilization is most
It is big by only 50% or so.
3rd, technique for overlaying, the coating of this technology are generally all thicker（About 2 ~ 3mm）, but part needs to preheat, heat input
Amount is big, and heat affected area is big, causes part moderate finite deformation, and mechanical performance declines.
4th, laser melting and coating technique, referring to Fig. 2, this traditional technology has bond strength high, and hot quantity is small, and deformation is small etc.
Advantage, and can be by adjusting cladding layer capability needed for powdered ingredients acquisition, therefore start to realize in all conglomeraties and apply, but
It is that the technology processing efficiency is relatively low, cladding rate is generally 0.5 ~ 3m/min, and powder using efficiency is low, and general 50% or so, and swash
Light energy is focused on basis material, is mixed and combining powder by melting basis material, this causes laser energy using effect
Rate and cladding rate are low, are still solid granulates when powder is combined with basis material, finished surface smoothness is poor.Since its efficiency is low
Under, it is of high cost, limit its extensive commercial application and at present bottleneck problem urgently to be resolved hurrily.
Invention content
Present invention aims at provide a kind of ultrahigh speed laser melting coating system, to realize that large area is completed in the short time to be applied
The quick preparation of layer, while part requirement is met, greatly improves working efficiency.Meanwhile low energy consumption and material profit
With rate height, production cost is saved.It should be noted that the ultrahigh speed in the present invention is relative to existing laser melting coating speed
For, which specifically refers to laser scanning linear velocity more than or equal to 25m/min.
According to an aspect of the present invention, the invention discloses a kind of ultrahigh speed laser melting coating system, a kind of specific ultrahigh speed swashs
Light cladding system, which is characterized in that the system includes：
Ultrahigh speed laser melting coating machining tool clamps tool part for passing through chuck；
Adjustable ultrahigh speed laser melting coating head；
Feeding head；
Control unit is connect with the lathe, adjustable ultrahigh speed laser melting coating head and feeding head；And
Parameter storage unit is connect with control unit, for storing lathe, adjustable ultrahigh speed laser melting coating head and feeding head
Running parameter；
Wherein, the laser defocusing amount that laser melting coating head is adjusted according to the state modulator that parameter storage unit stores for control unit is
1 ~ 2mm, spot size Φ 1.0 ~ Φ 1.5mm adjust lathe X-axis（Workpiece is radially）Make feeding head apart from 10 ~ 13mm of workpiece surface,
For powder focus point apart from 0.2 ~ 2mm of workpiece surface, amyloid plaque size is 0.5 ~ 1mm of Φ.
According to a further aspect of the invention, the powder sending quantity of control unit control feeding head is 15 ~ 45 g/min.
According to a further aspect of the invention, the laser output power of the adjustable ultrahigh speed laser melting coating head is 0.8 ~ 3kW,
Constant laser scanning linear velocity in surface is 25 ~ 200m/min, and laser melting coating head is along Z-direction（Workpiece is axial）It is every to turn feeding distance
0.2~1mm。
According to a further aspect of the invention, a kind of ultrahigh speed laser melting coating system is provided, it is characterised in that including：
Power control unit, the small part energy for controlling laser act on basis material upper surface and form shallower molten bath,
Laser major part energy is acted on the alloy powder above basis material；
Ultrahigh speed laser melting coating unit, for alloy powder temperature before molten bath is entered to be made to rise to fusing point and melt, with drop
Form instill molten bath combined with basis material.
According to a further aspect of the invention, ultrahigh speed laser melting coating unit make alloy powder instill in droplets molten bath with
Basis material relies on basis material itself cooled and solidified after combining.
According to a further aspect of the invention, power control unit causes the laser energy of more than 80% laser beam to act on alloy
On powder.
According to a further aspect of the invention, power control unit is specially laser energy attenuation unit, for relative to matrix
Upper surface setting the laser defocusing amount 1 ~ 2mm above basis material, laser spot size 1.0 ~ Φ of Φ 1.5mm of material.
According to a further aspect of the invention, alloy powder grain size intervals are 15 ~ 45 μm, sphericity >=90%, Han Yang Liang≤
150ppm, Liu Dong≤20s/50g, hollow powder rate ＜ 1%.
It is understood that since traditional system is all that focusing laser energy is melted densification on basis material
Matrix in itself, under identical laser energy effect, melts the needs of the time spent by matrix and greatly increases, this is dramatically
Cladding speed is limited, reduces the utilization rate of powder, on the contrary, laser energy dexterously is acted on alloy powder in the present invention
On so that powder is combined in a manner that drop is non-particulate with basis material, has both reduced the waste of expensive powder, more improve
Cladding speed obtains higher combined with firmness and surface flatness.Laser energy is acted on alloy powder and for example may be used
To be realized by controlling and adjusting the focal position of laser energy.
Compared with traditional laser melting and coating technique, ultrahigh speed laser melting coating system has dramatically different, high energy in principle
Beam small part energy, which is acted on basis material, forms shallower molten bath, and most of energy has been acted on dusty material, is made
Powder temperature before molten bath is entered rises to fusing point and melts, and instills molten bath in droplets and is combined with basis material, then according to
By matrix itself cooled and solidified.Based on this principle, ultrahigh speed laser melting coating substantially reduces powder fusing time, so as to make to melt
It covers efficiency to significantly improve, generally can reach 10 times of conventional laser cladding or more.
Cladding layer prepared by ultrahigh speed laser melting coating system is complete metallurgical binding, and interface bond strength is high, not easy-peel
It falls.And laser output power is generally below 3kW when working, heat input is small, and deformation is small.Ultrahigh speed laser melting coating system matches
Dusty material granularity is small, and cladding head precision is high, powder feeding is stablized, and powder using efficiency can reach 90%, very big compared to conventional laser cladding
The waste for reducing material.Clad layer surface prepared by ultrahigh speed laser melting coating is highly polished, and post processing only needs grinding,
The process for saving one of Vehicle Processing than conventional laser cladding table.
Description of the drawings
Fig. 1 is the step schematic diagram of the superelevation rate laser cladding method of the present invention.
Fig. 2 is conventional laser cladding system principle schematic diagram.
Fig. 3 is ultrahigh speed laser melting coating system principle schematic diagram.
Fig. 4 is ultrahigh speed laser melting coating hydraulic support column schematic diagram.
Fig. 5 is ultrahigh speed laser melting coating automobile brake disc schematic diagram.
Reference numeral：
1-laser beam, 2-powder stream, 3-molten bath, 4-cladding layer, 5-fusion area
6-heat affected area, 7-matrix, 8-hydraulic support column, 9-brake disc
Specific embodiment
It is described further below in conjunction with the drawings and specific embodiments.
Embodiment 1
Preferably, the invention discloses a kind of ultrahigh speed laser melting coating systems.The system preferably includes：
Ultrahigh speed laser melting coating machining tool clamps tool part for passing through chuck；
Adjustable ultrahigh speed laser melting coating head；
Feeding head；
Control unit is connect with the lathe, adjustable ultrahigh speed laser melting coating head and feeding head；And
Parameter storage unit is connect with control unit, for storing lathe, adjustable ultrahigh speed laser melting coating head and feeding head
Running parameter；
Wherein, the laser defocusing amount that laser melting coating head is adjusted according to the state modulator that parameter storage unit stores for control unit is
1 ~ 2mm, spot size Φ 1.0 ~ Φ 1.5mm adjust lathe X-axis（Workpiece is radially）Make feeding head apart from 10 ~ 13mm of workpiece surface,
For powder focus point apart from 0.2 ~ 2mm of workpiece surface, amyloid plaque size is 0.5 ~ 1mm of Φ.
Preferably, the powder sending quantity of control unit control feeding head is 15 ~ 45 g/min.
Preferably, the laser output power of the adjustable ultrahigh speed laser melting coating head be 0.8 ~ 3kW, surface constant laser
Scanning linear velocity is 25 ~ 200m/min, and laser melting coating head is along Z-direction（Workpiece is axial）It is every to turn 0.2 ~ 1mm of feeding distance.
Preferably, the present invention also provides a kind of ultrahigh speed laser melting coating system, including：
Power control unit, the small part energy for controlling laser act on basis material upper surface and form shallower molten bath,
Laser major part energy is acted on the alloy powder above basis material；
Ultrahigh speed laser melting coating unit, for alloy powder temperature before molten bath is entered to be made to rise to fusing point and melt, with drop
Form instill molten bath combined with basis material.
Preferably, ultrahigh speed laser melting coating unit makes alloy powder instill molten bath in droplets to be combined with basis material
Basis material itself cooled and solidified is relied on afterwards.
Preferably, power control unit causes the laser energy of more than 80% laser beam to act on alloy powder.
Preferably, power control unit is specially laser energy attenuation unit, for relative to the upper surface of basis material
Laser defocusing amount 1 ~ 2mm above basis material, laser spot size 1.0 ~ Φ of Φ 1.5mm are set.
Preferably, alloy powder grain size intervals are 15 ~ 45 μm, sphericity >=90%, Han Yang Liang≤150ppm, Liu Dong≤
20s/50g, hollow powder rate ＜ 1%.
It is understood that since traditional system is all that focusing laser energy is melted densification on basis material
Matrix in itself, under identical laser energy effect, melts the needs of the time spent by matrix and greatly increases, this is dramatically
Cladding speed is limited, reduces the utilization rate of powder, on the contrary, laser energy dexterously is acted on alloy powder in the present invention
On so that powder is combined in a manner that drop is non-particulate with basis material, has both reduced the waste of expensive powder, more improve
Cladding speed obtains higher combined with firmness and surface flatness.Laser energy is acted on alloy powder and for example may be used
To be realized by controlling and adjusting the focal position of laser energy.
Compared with traditional laser melting and coating technique, ultrahigh speed laser melting coating system has dramatically different, high energy in principle
Beam small part energy, which is acted on basis material, forms shallower molten bath, and most of energy has been acted on dusty material, is made
Powder temperature before molten bath is entered rises to fusing point and melts, and instills molten bath in droplets and is combined with basis material, then according to
By matrix itself cooled and solidified.Based on this principle, ultrahigh speed laser melting coating substantially reduces powder fusing time, so as to make to melt
It covers efficiency to significantly improve, generally can reach 10 times of conventional laser cladding or more.
Embodiment 2
Referring to Fig. 1, the present invention also provides a kind of ultrahigh speed laser cladding method, specifically using following steps：
（1）The rust spot for treating cladding workpiece surface is wiped into cleaning with sand paper, it is clean with alcohol washes；
（2）Workpiece is packed into ultrahigh speed laser melting coating machining tool, chuck clamps；
（3）Ultrahigh speed laser melting coating alloy powder is used as cladding material；
（4）Laser melting coating head Z-direction knob is adjusted, laser 1 ~ 2mm of defocusing amount, spot size 1.0 ~ Φ of Φ 1.5mm are set；It adjusts
Lathe X-axis（Workpiece is radially）Making feeding head, powder focus point is apart from 0.2 ~ 2mm of workpiece surface, powder apart from 10 ~ 13mm of workpiece surface
Spot size is 0.5 ~ 1mm of Φ；
（5）Powder feeder powder feeding disk rotating speed control powder sending quantity is adjusted, powder sending quantity size is set according to required cladding layer thickness；
（6）Laser output power is set, machine spindle speed is adjusted according to diameter of work, setting surface constant laser scans linear speed
Degree sets laser melting coating head along Z-direction（Workpiece is axial）It is every to turn feeding distance；Main shaft high speed rotation and laser head Z-direction are linear
Mobile Union Movement, carries out ultrahigh speed laser melting coating processing；
（7）After ultrahigh speed laser melting coating process finishing, workpiece is unloaded, is subsequently machined.
Preferably, step（2）In, the workpiece can be column, tubular, plate-like, according to workpiece concrete shape, weight,
Size is clamped using top or bracket engagement chuck.
Preferably, step（3）In, the ultrahigh speed laser melting coating alloy powder, which is characterized in that using inert gas
Prepared by atomization method, powder size section is 15 ~ 45 μm, sphericity >=90%, Han Yang Liang≤150ppm, Liu Dong≤20s/
50g, hollow powder rate ＜ 1%；Material is ferrous alloy or nickel-base alloy or cobalt-base alloys or metal-base composites.
Preferably, step（5）In, the powder sending quantity is 15 ~ 45 g/min, and cladding layer thickness is 50 ~ 400 μm.
Preferably, step（6）In, the laser output power is 0.8 ~ 3kW, and constant laser scanning linear velocity in surface is 25
~ 200m/min, laser melting coating head is along Z-direction（Workpiece is axial）It is every to turn 0.2 ~ 1mm of feeding distance.
Referring to Fig. 3, laser beam 1 is shown and focuses on and is radiated in powder stream 2, simple melt is formed on matrix 7
Pond 3, and fusion area 5 and heat affected area 6 are formed, ultimately form cladding layer 4.The ultrahigh speed laser melting and coating technique of the present invention is a kind of
Novel, efficient laser melting and coating technique, 1 small part energy of laser beam, which is acted on basis material, forms shallower molten bath 3, and
Most of energy has acted on dusty material（Such as powder stream 2）On, powder temperature before molten bath 3 is entered is made to rise to fusing point simultaneously
Fusing, is combined in droplets with basis material, then by itself cooled and solidified of matrix 7.Due to not needing in matrix surface
Deeper molten bath 3 is formed, therefore compared with conventional laser melting and coating technique, laser energy consumption is decreased obviously, and working efficiency also improves several
Ten even hundreds of times.The high solidification rate of powder molten drop makes cladding layer 3, i.e. coating substantially not oxidized in preparation process,
It ensure that the performance of coating.
Preferably, as illustrated in figures 4-5, the present invention is shown to apply in hydraulic support column 8 and automobile brake disc 9
On.
Embodiment 3
The present invention also provides a kind of ultrahigh speed laser cladding methods, it is characterised in that includes the following steps：
The small part energy of control laser acts on basis material upper surface and forms shallower molten bath 3, and laser major part energy is made
With on the alloy powder above basis material；
Alloy powder temperature before molten bath 3 is entered rises to fusing point and melts, and instills molten bath 3 and basis material in droplets
With reference to.
It is understood that since traditional method is all that focusing laser energy is melted densification on basis material
Matrix in itself, under identical laser energy effect, melts the needs of the time spent by matrix and greatly increases, this is dramatically
Cladding speed is limited, reduces the utilization rate of powder, on the contrary, laser energy dexterously is acted on alloy powder in the present invention
On so that powder is combined in a manner that drop is non-particulate with basis material, has both reduced the waste of expensive powder, more improve
Cladding speed obtains higher combined with firmness and surface flatness.Laser energy is acted on alloy powder and for example may be used
To be realized by controlling and adjusting the focal position of laser energy.
Preferably, alloy powder instills in droplets relies on basis material itself after molten bath 3 is combined with basis material
Cooled and solidified.
Preferably, focusing on laser beam 1 makes more than 80% laser energy act on alloy powder.It is understood that example
It is also feasible that such as more than 60% laser energy, which is acted on alloy powder,.
Preferably, laser defocusing amount 1 ~ 2mm above basis material, laser light are set relative to the upper surface of basis material
Spot size 1.0 ~ Φ of Φ 1.5mm.
Preferably, alloy powder grain size intervals are 15 ~ 45 μm, sphericity >=90%, Han Yang Liang≤150ppm, Liu Dong≤
20s/50g, hollow powder rate ＜ 1%.
Compared with traditional laser melting and coating technique, ultrahigh speed laser cladding method has dramatically different, high energy in principle
Beam small part energy, which is acted on basis material, forms shallower molten bath 3, and most of energy has been acted on dusty material, is made
Powder temperature before molten bath 3 is entered rises to fusing point and melts, and instills molten bath 3 in droplets and is combined with basis material, then
By matrix itself cooled and solidified.Based on this principle, ultrahigh speed laser melting coating substantially reduces powder fusing time, so as to make
Cladding efficiency significantly improves, and generally can reach 10 times of conventional laser cladding or more.
Embodiment 4：This example illustrates the ultrahigh speed laser cladding method of the present invention by taking cylindrical parts as an example, workpiece
Basis material is 27SiMn, and size is diameter of phi 100mm × length 1000mm.
A kind of ultrahigh speed laser cladding method, specifically using following steps：
（1）The rust spot for treating cladding workpiece surface is wiped into cleaning with sand paper, it is clean with alcohol washes；
（2）Workpiece is packed into ultrahigh speed laser melting coating machining tool, with chuck, top clamping；
（3）Ultrahigh speed laser melting coating alloy powder is used as cladding material, the mass percent of alloying component is：Cr 16.0%
~ 18.0%, Ni 10.0% ~ 14.0%, Mo 2.0% ~ 3.0%, Mn ＜ 2.0%, C≤0.03%, Si≤1.0%, P≤0.045%, S≤
0.03%, remaining is Fe；Powder size section is 15 ~ 45 μm, sphericity >=90%, Han Yang Liang≤150ppm, Liu Dong≤20s/
50g, hollow powder rate ＜ 1%；
（4）Adjust laser melting coating head Z-direction knob, setting laser defocusing amount 2mm, spot size Φ 1.0mm；Adjust lathe X-axis
（Workpiece is radially）Make feeding head apart from workpiece surface 11mm, for powder focus point apart from workpiece surface 1.0mm, amyloid plaque size is Φ
0.8mm；
（5）It is 5.5 r/min to adjust powder feeder powder feeding disk rotating speed, and powder sending quantity is 18 g/min, and required cladding layer thickness is 150 μ
m；
（6）Setting laser output power is 1.5kW, and setting surface constant laser scans linear velocity 50m/min, sets laser melting coating
Head is along Z-direction（Workpiece is axial）It is every to turn feeding distance 0.5mm；Main shaft high speed rotation combines fortune with laser head Z-direction linear movement
It is dynamic, carry out ultrahigh speed laser melting coating processing；
（7）After ultrahigh speed laser melting coating process finishing, workpiece is unloaded, grinding machine is packed into and carries out grinding.
Obtained cladding layer is tested for the property, reaches following index：
Through non-destructive testing, cladding layer flawless；Cladding layer hardness reaches more than 45HRC, and cladding layer is reached with substrate combinating strength
More than 500MPa；9 grades are rated to cladding layer corrosion resistance by national standard GB_T6461-2002.
Embodiment 5：This example illustrates the ultrahigh speed laser cladding method of the present invention by taking discoid part as an example, workpiece
Basis material is gray cast iron 250, and size is diameter of phi 280mm × 30mm.
A kind of ultrahigh speed laser cladding method, specifically using following steps：
（1）The rust spot for treating cladding workpiece surface is wiped into cleaning with sand paper, it is clean with alcohol washes；
（2）Workpiece is packed into ultrahigh speed laser melting coating machining tool, is clamped with chuck；
（3）Ultrahigh speed laser melting coating alloy powder is used as cladding material, the mass percent of alloying component is：C 0.6%~
1.0%, Cr 14.0% ~ 17.0%, Fe≤15.0%, Si 3.0% ~ 4.5%, B 2.5% ~ 4.5%, remaining is Ni；Powder size section
It is 15 ~ 45 μm, sphericity >=90%, Han Yang Liang≤150ppm, Liu Dong≤20s/50g, hollow powder rate ＜ 1%；
（4）Adjust laser melting coating head Z-direction knob, setting laser defocusing amount 1mm, spot size Φ 1.0mm；Adjust lathe X-axis
（Workpiece is radially）Make feeding head apart from workpiece surface 11.5mm, for powder focus point apart from workpiece surface 1.5mm, amyloid plaque size is Φ
0.8mm；
（5）It is 6.5 r/min to adjust powder feeder powder feeding disk rotating speed, and powder sending quantity is 23 g/min, and required cladding layer thickness is 200 μ
m；
（6）Setting laser output power is 1.6kW, and setting surface constant laser scans linear velocity 75m/min, sets laser melting coating
Head is along Z-direction（Workpiece is axial）It is every to turn feeding distance 0.45mm；Main shaft high speed rotation combines fortune with laser head Z-direction linear movement
It is dynamic, carry out ultrahigh speed laser melting coating processing；
（7）After ultrahigh speed laser melting coating process finishing, workpiece is unloaded, grinding machine is packed into and carries out grinding.
Obtained cladding layer is tested for the property, reaches following index：
Through non-destructive testing, cladding layer flawless；Cladding layer hardness reaches more than 55HRC, cladding layer dilution rate ＜ 1%, cladding layer and base
Body bond strength reaches more than 400MPa.
Claims (8)
1. a kind of ultrahigh speed laser melting coating system, which is characterized in that the system includes：
Ultrahigh speed laser melting coating machining tool clamps tool part for passing through chuck；
Adjustable ultrahigh speed laser melting coating head；
Feeding head；
Control unit is connect with the lathe, adjustable ultrahigh speed laser melting coating head and feeding head；And
Parameter storage unit is connect with control unit, for storing lathe, adjustable ultrahigh speed laser melting coating head and feeding head
Running parameter；
Wherein, the laser defocusing amount that laser melting coating head is adjusted according to the state modulator that parameter storage unit stores for control unit is
1 ~ 2mm, spot size Φ 1.0 ~ Φ 1.5mm adjust lathe X-axis（Workpiece is radially）Make feeding head apart from 10 ~ 13mm of workpiece surface,
For powder focus point apart from 0.2 ~ 2mm of workpiece surface, amyloid plaque size is 0.5 ~ 1mm of Φ.
2. ultrahigh speed laser melting coating system according to claim 1, which is characterized in that control unit control feeding head
Powder sending quantity is 15 ~ 45 g/min.
3. ultrahigh speed laser melting coating system according to claim 1 or 2, which is characterized in that the adjustable ultrahigh speed swashs
The laser output power of light cladding head is 0.8 ~ 3kW, and surface constant laser scans linear velocity as 25 ~ 200m/min, laser melting coating
Head is along Z-direction（Workpiece is axial）It is every to turn 0.2 ~ 1mm of feeding distance.
4. a kind of ultrahigh speed laser melting coating system, it is characterised in that including：
Power control unit, the small part energy for controlling laser act on basis material upper surface and form shallower molten bath,
Laser major part energy is acted on the alloy powder above basis material；
Ultrahigh speed laser melting coating unit, for alloy powder temperature before molten bath is entered to be made to rise to fusing point and melt, with drop
Form instill molten bath combined with basis material.
5. system according to claim 4, it is characterised in that ultrahigh speed laser melting coating unit makes alloy powder with drop
Form is instilled after molten bath is combined with basis material by basis material itself cooled and solidified.
6. system according to claim 4, it is characterised in that power control unit enables the laser of more than 80% laser beam
Amount is acted on alloy powder.
7. according to claim 4-6 any one of them systems, it is characterised in that power control unit is specially laser energy control
Unit processed, for setting laser defocusing amount 1 ~ 2mm above basis material, laser facula ruler relative to the upper surface of basis material
Very little 1.0 ~ Φ of Φ 1.5mm.
8. system according to claim 7, it is characterised in that alloy powder grain size intervals are 15 ~ 45 μm, sphericity >=
90%, Han Yang Liang≤150ppm, Liu Dong≤20s/50g, hollow powder rate ＜ 1%.
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| CN114686876A (en) * | 2020-12-26 | 2022-07-01 | 天津中科玛斯特激光科技有限公司 | Broadband high-speed laser cladding process method and device |
| CN114959681A (en) * | 2022-04-29 | 2022-08-30 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | High-hardness and high-wear-resistance coating and preparation method thereof |
| CN114990547A (en) * | 2022-07-26 | 2022-09-02 | 江西瑞曼增材科技有限公司 | Method for strengthening railway wheel through ultra-high-speed laser cladding |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011100456B4 (en) * | 2011-05-04 | 2015-05-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Extreme high-speed laser deposition welding process |
-
2017
- 2017-12-22 CN CN201711405746.0A patent/CN108220951A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011100456B4 (en) * | 2011-05-04 | 2015-05-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Extreme high-speed laser deposition welding process |
Non-Patent Citations (1)
| Title |
|---|
| THOMAS SCHOPPHOVEN ET.AL.: "Investigations on ultra-high-speed laser material deposition as alternative for hard chrome plating and thermal spraying", 《JOURNAL OF LASER APPLICATIONS》 * |
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| CN114686873A (en) * | 2020-12-26 | 2022-07-01 | 天津中科玛斯特激光科技有限公司 | Broadband high-speed laser cladding method and system |
| CN114686876A (en) * | 2020-12-26 | 2022-07-01 | 天津中科玛斯特激光科技有限公司 | Broadband high-speed laser cladding process method and device |
| CN114686873B (en) * | 2020-12-26 | 2024-01-12 | 天津中科玛斯特激光科技有限公司 | Broadband high-speed laser cladding method and system |
| CN114959681A (en) * | 2022-04-29 | 2022-08-30 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | High-hardness and high-wear-resistance coating and preparation method thereof |
| CN114990547A (en) * | 2022-07-26 | 2022-09-02 | 江西瑞曼增材科技有限公司 | Method for strengthening railway wheel through ultra-high-speed laser cladding |
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