CN110257824A - A kind of 3D printing method and device of the wear-resisting composite coating of rich chromium cast iron base - Google Patents
A kind of 3D printing method and device of the wear-resisting composite coating of rich chromium cast iron base Download PDFInfo
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- CN110257824A CN110257824A CN201910629734.9A CN201910629734A CN110257824A CN 110257824 A CN110257824 A CN 110257824A CN 201910629734 A CN201910629734 A CN 201910629734A CN 110257824 A CN110257824 A CN 110257824A
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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
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Abstract
A kind of 3D printing method and device of the wear-resisting composite coating of rich chromium cast iron base, the method choose matrix of the rich chromium cast iron as cladding, the WC-Co alloy powder centainly matched are uniformly layered on matrix surface by the way of prefabricated powder；WC-Co alloy powder is put into powder feeder, using synchronous powder feeding system mode, laser irradiation is carried out to WC-Co alloy powder using high-power semiconductor laser and forms composite coating to successively accumulate in matrix surface so that powder and matrix melt simultaneously.By adjusting the parameters such as laser scanning speed, powder feeding rate, laser power, to prepare wear-resisting composite coating on rich chromium cast iron matrix.Described device includes robot, YC52 cladding laser Machining head, powder feeder, laser, water cooling unit, robot control cabinet, regulated power supply, robot slide unit and molten multiple platform.The present invention repair to rich chromium cast iron and be remanufactured, and can extend the service life of rich chromium cast iron, reduces entreprise cost.
Description
Technical field
The present invention relates to a kind of 3D printing method and devices of wear-resisting composite coating of rich chromium cast iron base, belong to 3D printing technique neck
Domain.
Background technique
3D printing (3DP) i.e. one kind of rapid shaping technique, it is one kind based on digital model file, with powder
The adhesive materials such as shape metal or plastics construct the technology of object by layer-by-layer printing.
Rich chromium cast iron have excellent wear-resisting property, the serious wears such as mine, metallurgy, oil exploitation operating condition occasion all
It is widely used.Since rich chromium cast iron is likely to occur the major accidents such as localized delamination in use, make its application
Range receives severely restricts.For this situation, laser is carried out on the surface of rich chromium cast iron using laser 3D printing technology and is melted
It covers, successively accumulation forms the composite coating of excellent in mechanical performance.3D printing technique is good, reinforcing to rich chromium cast iron surface and repairs
It is multiple, it can be well solved the resources costs problem of rich chromium cast iron.
Summary of the invention
The object of the present invention is to which it is resistance to that the present invention provides a kind of rich chromium cast iron base in order to promote the service life of rich chromium cast iron
Grind the 3D printing method and device of composite coating.
Realize that technical scheme is as follows, a kind of 3D printing method of the wear-resisting composite coating of rich chromium cast iron base, this hair
It is bright using WC-Co as cladding material, quickly heated using laser melting and coating technique, quickly solidification, thus on rich chromium cast iron matrix
Form WC-Co composite coating.
A kind of 3D printing method of the wear-resisting composite coating of rich chromium cast iron base, comprising the following steps:
(1) matrix of the rich chromium cast iron as cladding is chosen, its surface is polished and cleaned up；
(2) configure WC-Co alloy powder, the WC-Co alloy powder ingredient be (8~16) wt.% cobalt powder, (84~
92) tungsten powder and carbon dust of wt.%；The mass percent of tungsten powder and carbon dust is 1:15；
(3) WC-Co alloy powder is uniformly layered on rich chromium cast iron matrix surface by the way of prefabricated powder；
(4) on laser melting coating platform, the matrix for being covered with WC-Co alloy powder is put into powder feeder, high power is used
Semiconductor laser carries out laser scanning irradiation to above-mentioned powder, so that powder and matrix melt simultaneously, thus in matrix surface
Successively accumulation forms rich chromium cast iron base composite coating.
Prepare the technological parameter of the rich chromium cast iron base composite coating are as follows:
Peak load weight: 30Kg；
Maximum working radius: 2033mm；
Maximum laser power: 3000W；
Automatic powder feeding system: synchronous powder feeding system；
Powder feeding rate: 0.6r/min；
Supply voltage: AC380V；
Supply current: 63A；
Repetitive positioning accuracy: ± 0.05mm；
Laser power is 900~1900W；
Sweep speed is 600~700mm/min；
Protective gas is Ar gas；
3D laser printing is carried out by above-mentioned parameter, until required coating layer thickness.
The rich chromium cast iron matrix surface is polished with 1200 mesh sand paper, and is cleaned by ultrasonic with acetone and dehydrated alcohol.
The partial size of raw material tungsten powder, carbon dust and cobalt powder is 40~150 μm in the WC-Co alloy, wherein the average crystal grain of WC
Having a size of 0.42~0.68 μm.
The prefabricated powder is with a thickness of 1~1.5mm.
The wear rate of the rich chromium cast iron base composite coating is 0.002~0.003 times of matrix.
A kind of 3D printing device of the wear-resisting composite coating of rich chromium cast iron base, including robot, YC52 cladding laser Machining head,
Powder feeder, laser, water cooling unit, robot control cabinet, regulated power supply, robot slide unit and molten multiple platform；Robot is mounted on
On robot machine people's slide unit；Molten multiple platform is provided with beside robot, for placing the workpiece that need to be coated with；The YC52 cladding
Laser Machining head and powder feeder are mounted in robot；It is attached that protective gas by pipeline is connected to YC52 cladding laser Machining head
Closely；Laser connects YC52 cladding laser Machining head；The cooling water of water cooling unit is connected to YC52 cladding laser processing by pipeline
Head is internal to cool down it；PLC300 controller is installed in control cabinet；PLC300 controller to the powder feeding rate of powder feeder,
The output power and sweep speed of laser are controlled, and are controlled to protective gas, with winged water cooling unit；Needed for 3D printing
WC-Co alloy powder is filled in powder feeder in advance.
The robot uses KR30HA robot.
The invention has the advantages that the rich chromium cast iron base composite coating that the present invention prints has excellent wear-resisting property,
Its wear rate is 0.002~0.003 times of matrix.The present invention repair to rich chromium cast iron and be remanufactured, and can extend rich chromium cast iron
Service life, substantially reduce entreprise cost.
The present invention is suitable for the 3D printing of rich chromium cast iron base composite coating.
Detailed description of the invention
Fig. 1 is the preparation 3D printing flow chart of the wear-resisting composite coating of rich chromium cast iron base；
The XRD diagram of Fig. 2 WC-12Co spherical shape composite powder；
Fig. 3 is the rich chromium cast iron base composite coating surface SEM figure that embodiment 1 provides；
Fig. 4 is the rich chromium cast iron base composite coating section SEM figure that embodiment 1 provides；
Fig. 5 is the rich chromium cast iron base composite coating surface SEM figure that embodiment 2 provides；
Fig. 6 is the rich chromium cast iron base composite coating section SEM figure that embodiment 2 provides；
Fig. 7 rich chromium cast iron base wear-resistant coating section Vickers hardness with distance change curve；
Fig. 8 is the 3D printing apparatus structure schematic diagram of the wear-resisting composite coating of rich chromium cast iron base of the present invention；
In figure, 1 is robot；2 be powder feeder；3 be robot control cabinet；4 be regulated power supply；5 be laser；6 be water
Cold；7 be robot slide unit；8 be molten multiple platform.
Specific embodiment
A specific embodiment of the invention is as shown in Figure 1.
A kind of 3D printing method of the wear-resisting composite coating of rich chromium cast iron base of the present embodiment, comprising the following steps:
(1) matrix of the rich chromium cast iron as cladding is chosen, its surface is polished and cleaned up；
(2) configure WC-Co alloy powder, the WC-Co alloy powder ingredient be (8~16) wt.% cobalt powder, (84~
92) tungsten powder and carbon dust of wt.%；The mass percent of tungsten powder and carbon dust is 1:15；
(3) WC-Co alloy powder is uniformly layered on rich chromium cast iron matrix surface by the way of prefabricated powder；
(4) on laser melting coating platform, the matrix for being covered with WC-Co alloy powder is put into powder feeder, high power is used
Semiconductor laser carries out laser scanning irradiation to above-mentioned powder, so that powder and matrix melt simultaneously, thus in matrix surface
Successively accumulation forms rich chromium cast iron base composite coating.
The present embodiment is used as cladding material using WC-12Co is (as shown in Figure 2), using the method for laser melting coating, uses half
Conductor laser carries out laser irradiation to powder, so that powder and matrix melt simultaneously, to successively accumulate shape in matrix surface
At composite coating, by adjusting the parameters (such as Fig. 3-6) such as laser scanning speed, powder feeding rate, laser power, to be cast in high chromium
Wear-resisting composite coating (such as Fig. 7) is prepared in iron matrix.
Embodiment 1:
In the present embodiment, laser output power 900W, sweep speed 700mm/min, the printing number of plies are 4, powder feeding
Rate is 0.6r/min, as shown in Figures 3 and 4.Compared with matrix, the present embodiment rich chromium cast iron base composite coating wear rate is matrix
0.003 times.
Embodiment 2:
In the present embodiment, laser output power 1100W, sweep speed 600mm/min, the printing number of plies are 4, powder feeding
Rate is 0.6r/min, as illustrated in Figures 5 and 6.
Compared with matrix, the present embodiment rich chromium cast iron base composite coating wear rate is 0.002 times of matrix.
Embodiment 3
A kind of 3D printing device of the wear-resisting composite coating of rich chromium cast iron base of the present embodiment, including robot 1, YC52 cladding swash
Light processing head, powder feeder 2, laser 5, water cooling unit 6, robot control cabinet 3, regulated power supply 4, robot slide unit 7 and molten multiple flat
Platform 8.
Robot 1 is mounted on 7 on robot slide unit；It is provided with molten multiple platform 8 beside robot 1, needs to be coated with for placing
Workpiece and workpiece is carried out molten multiple.
The YC52 cladding laser Machining head and powder feeder 2 are mounted in robot 1；Protective gas is connected to by pipeline
Near YC52 cladding laser Machining head；Laser 5 connects YC52 cladding laser Machining head；The cooling water of water cooling unit 6 passes through pipeline
It is connected to inside YC52 cladding laser Machining head and it is cooled down；PLC300 controller is installed in control cabinet 3；PLC300 control
Device processed controls the powder feeding rate of powder feeder, the output power of laser and sweep speed, to protective gas, water cooling unit into
Row control；WC-Co alloy powder needed for 3D printing is filled in powder feeder in advance.
Claims (7)
1. a kind of 3D printing method of the wear-resisting composite coating of rich chromium cast iron base, which is characterized in that the described method comprises the following steps:
(1) matrix of the rich chromium cast iron as cladding is chosen, its surface is polished and cleaned up；
(2) WC-Co alloy powder is configured, the WC-Co alloy powder ingredient is the cobalt powder of (8 ~ 16) wt.%, (84 ~ 92) wt.%
Tungsten powder and carbon dust；The mass percent of tungsten powder and carbon dust is 1:15；
(3) WC-Co alloy powder is uniformly layered on rich chromium cast iron matrix surface by the way of prefabricated powder；
(4) on laser melting coating platform, the matrix for being covered with WC-Co alloy powder is put into powder feeder, is partly led using high power
Body laser carries out laser scanning irradiation to above-mentioned powder, so that powder and matrix melt simultaneously, thus layer-by-layer in matrix surface
Accumulation forms rich chromium cast iron base composite coating.
2. a kind of 3D printing method of wear-resisting composite coating of rich chromium cast iron base according to claim 1, which is characterized in that institute
State the technological parameter of rich chromium cast iron base composite coating preparation are as follows:
Peak load weight: 30 Kg；
Maximum working radius: 2033 mm；
Maximum laser power: 3000 W；
Automatic powder feeding system: synchronous powder feeding system；
Powder feeding rate: 0.6 r/min；
Supply voltage: AC380V；
Supply current: 63 A；
Repetitive positioning accuracy: ± 0.05 mm；
Laser power is 900 ~ 1900 W；
Sweep speed is 600 ~ 700 mm/min；
Protective gas is Ar gas；
3D laser printing is carried out by above-mentioned parameter, until required coating layer thickness.
3. a kind of 3D printing method of wear-resisting composite coating of rich chromium cast iron base according to claim 1, which is characterized in that institute
It states rich chromium cast iron matrix surface to be polished with 1200 mesh sand paper, and is cleaned by ultrasonic with acetone and dehydrated alcohol.
4. a kind of 3D printing method of wear-resisting composite coating of rich chromium cast iron base according to claim 1, which is characterized in that institute
The partial size for stating raw material tungsten powder, carbon dust and cobalt powder in WC-Co alloy is 40 ~ 150 mm, and wherein the average grain size of WC is
0.42 ~ 0.68 mm。
5. a kind of 3D printing method of wear-resisting composite coating of rich chromium cast iron base according to claim 1, which is characterized in that institute
Prefabricated powder is stated with a thickness of 1 ~ 1.5 mm.
6. the preparation method of the rich chromium cast iron base wear-resisting composite coating according to claim 1 based on 3D printing technique,
It is characterized in that, the wear rate of the rich chromium cast iron base composite coating is 0.002 ~ 0.003 times of matrix.
7. a kind of 3D printing device of the wear-resisting composite coating of rich chromium cast iron base, which is characterized in that described device include robot,
YC52 cladding laser Machining head, powder feeder, laser, water cooling unit, robot control cabinet, regulated power supply, robot slide unit and molten
Multiple platform；Robot is mounted on robot slide unit；Molten multiple platform is provided with beside robot, for placing the workpiece that need to be coated with
And workpiece is carried out molten multiple；The YC52 cladding laser Machining head and powder feeder are mounted in robot；Protective gas passes through pipe
Road is connected near YC52 cladding laser Machining head；Laser connects YC52 cladding laser Machining head；The cooling water of water cooling unit is logical
Piping is connected to inside YC52 cladding laser Machining head and cools down to it；PLC300 controller is installed in control cabinet；
PLC300 controller controls the powder feeding rate of powder feeder, the output power of laser and sweep speed, to protective gas,
Water cooling unit is controlled；WC-Co alloy powder needed for 3D printing is filled in powder feeder in advance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910629734.9A CN110257824A (en) | 2019-07-12 | 2019-07-12 | A kind of 3D printing method and device of the wear-resisting composite coating of rich chromium cast iron base |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910629734.9A CN110257824A (en) | 2019-07-12 | 2019-07-12 | A kind of 3D printing method and device of the wear-resisting composite coating of rich chromium cast iron base |
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| CN110257824A true CN110257824A (en) | 2019-09-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0230704A (en) * | 1988-07-18 | 1990-02-01 | Brother Ind Ltd | Method for forming sintered hard alloy film |
| CN202643844U (en) * | 2012-06-12 | 2013-01-02 | 沈阳新松机器人自动化股份有限公司 | Laser cladding equipment for working face of roller |
| CN106624350A (en) * | 2017-01-23 | 2017-05-10 | 南通大学 | High-precision flexible laser processing system |
| CN106637045A (en) * | 2016-12-19 | 2017-05-10 | 江苏泽金激光科技有限公司 | Technique for preparing Co-based WC coating on metal surface |
| CN109989061A (en) * | 2019-04-28 | 2019-07-09 | 江西省科学院应用物理研究所 | A kind of method that laser 3D printing prepares wearable hard alloy ball grinder liner plate |
-
2019
- 2019-07-12 CN CN201910629734.9A patent/CN110257824A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0230704A (en) * | 1988-07-18 | 1990-02-01 | Brother Ind Ltd | Method for forming sintered hard alloy film |
| CN202643844U (en) * | 2012-06-12 | 2013-01-02 | 沈阳新松机器人自动化股份有限公司 | Laser cladding equipment for working face of roller |
| CN106637045A (en) * | 2016-12-19 | 2017-05-10 | 江苏泽金激光科技有限公司 | Technique for preparing Co-based WC coating on metal surface |
| CN106624350A (en) * | 2017-01-23 | 2017-05-10 | 南通大学 | High-precision flexible laser processing system |
| CN109989061A (en) * | 2019-04-28 | 2019-07-09 | 江西省科学院应用物理研究所 | A kind of method that laser 3D printing prepares wearable hard alloy ball grinder liner plate |
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Application publication date: 20190920 |
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