CN107999754A - A kind of manufacture method of cemented carbide parts - Google Patents
A kind of manufacture method of cemented carbide parts Download PDFInfo
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- CN107999754A CN107999754A CN201711362862.9A CN201711362862A CN107999754A CN 107999754 A CN107999754 A CN 107999754A CN 201711362862 A CN201711362862 A CN 201711362862A CN 107999754 A CN107999754 A CN 107999754A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
- B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to cemented carbide parts processing technique field, discloses a kind of manufacture method of cemented carbide parts, including：By part section formed on the bottom plate on high energy beam scanning powder bed or the bottom plate, part section temperature formed on bottom plate or bottom plate is set to reach preset temperature；Spherical cemented carbide powder is laid with bottom plate or on the bottom plate in formed part section；Preheating is scanned to the cemented carbide powder last layer laid；Fusing is scanned to the cemented carbide powder last layer after preheating, shapes new part section；The laying, preheating and fusing step of cemented carbide powder last layer are repeated, until shaping cemented carbide parts.The present invention makes bottom plate or formed part section be in higher state of temperature by high energy beam scanning so that cemented carbide parts shaping stress is low, and print procedure cemented carbide parts will not cracking or tearing tendency is small, and the cemented carbide parts consistency shaped is high.
Description
Technical field
The present invention relates to cemented carbide parts processing technique field, more particularly to a kind of manufacturer of cemented carbide parts
Method.
Background technology
Hard alloy is by refractory metal compound (such as WC, TiC, TaC, NbC) and binding metal (Co, Ni, Fe etc.)
Composition, a kind of metal-ceramic with hard phase and Binder Phase characteristics of organizational structure produced with powder metallurgy process is compound
Material.Traditional cemented carbide parts generally use powder metallurgy process, and above traditional handicraft is there are problems with, first, technique
Long flow path, second, needing mold, can not embark on journey some complex-shaped components, third, vacuum-sintering high energy consumption, fourth, can not
Realize digital production.
In view of the above-mentioned problems, at present increasing material manufacturing (3D printing) technology can be used to carry out directly making for cemented carbide parts
Make, it uses data-driven, is directly driven, can directly be manufactured without mould, and can shape by the digital model of part
Arbitrarily complicated shape, the technological process of increases material manufacturing technology is short in addition, is conducive to small lot personalized customization.Therefore, using increasing
Material manufactures (3D printing) technology, can preferably realize the manufacture to cemented carbide parts.
Existing increasing material manufacturing (3D printing) technology mainly carries out the manufacture of cemented carbide parts using following several ways：
1st, hard alloy and organic adhesive are subjected to wet-milling, the slurry that wet-milling is obtained is extruded with nozzle, controls nozzle
Movement locus, blank is prepared by the method being successively superimposed.Then it is sintered.Itself and conventional method difference are little, only
It is that the process of die forming has been made into nozzle accumulation, however it remains the characteristics of technological process is long, sintering process high energy consumption.
2nd, 3DP technologies, powder raw material are the powder of hard alloy, often one layer of powder of paving, nozzle printing organic adhesive,
Obtain a section.Method by successively printing organic adhesive obtains blank, is then sintered, organic adhesive is taken off
Remove, obtain cemented carbide parts.This technology there are the problem of have：It is sintered first, still needing, causes its manufacturing process
Long flow path；Second, the cemented carbide parts internal void that organic adhesive after removing, obtains is more, consistency is low；Third, removing
During organic adhesive, part can be shunk, and be unfavorable for controlling forming accuracy.
3rd, SLM technologies, i.e. selective laser melt, and powder raw material is the powder of hard alloy, often spreads one layer of powder, laser
Scan and melt the dusty material in section.Cemented carbide parts are directly obtained by successively melting.Asked existing for this technology
Topic has：First, in SLM technologies, its powder bed tempertaure is low, and shaping stress is big, this brittle material of height of unsuitable hard alloy, zero
Part is very easy to cracking in print procedure, and refractory metal compound (WC, TiC, TaC, NbC etc.) content is higher, and cracking inclines
Xiang Yue great；Second, laser power is low, it is difficult to is completely melt refractory metal compound, causes drip molding consistency insufficient.
The content of the invention
It is an object of the invention to provide a kind of manufacture method of cemented carbide parts, in print procedure cemented carbide parts
It will not cracking or tearing tendency is small, the forming accuracy and consistency higher of the cemented carbide parts of shaping.
For this purpose, the present invention uses following technical scheme：
A kind of manufacture method of cemented carbide parts, comprises the following steps：
By part section formed on the bottom plate on high energy beam scanning powder bed or the bottom plate, make the bottom plate or institute
State part section temperature formed on bottom plate and reach preset temperature；
Spherical cemented carbide powder is laid with the bottom plate or on the bottom plate in formed part section；
Preheating is scanned to the cemented carbide powder last layer laid；
Fusing is scanned to the cemented carbide powder last layer after preheating, shapes new part section；
The laying, preheating and fusing step of cemented carbide powder last layer are repeated, until shaping cemented carbide parts.
Preferably, further include：
The percentage composition of low melting point binding metal in the spherical cemented carbide powder is arranged to x+ △ x, wherein：
X is the target component percentage of the low melting point binding metal in the cemented carbide parts, and △ x are to shape the hard alloy
Spherical cemented carbide powder needed for part is in fusing, the loss amount of its low melting point binding metal.
Preferably, the value of the △ x is directly proportional to the energy density of the high energy beam.
Preferably, the energy density of the high energy beam is calculated using the following formula：
Energy density=high energy beam power/(between the scan line of sweep speed × high energy beam of layer thickness × high energy beam
Away from).
Preferably, the high energy beam is electron beam, and the electron beam is under vacuum environment, and the vacuum environment
Pass through helium perfusion.
Preferably, the spherical cemented carbide powder is made of plasma spheroidization technique.
Preferably, the preset temperature is 700 DEG C -2000 DEG C.
Preferably, the preheating is scanned using grid type scan mode.
Preferably, the grid type scanning includes：
The cemented carbide powder last layer is vertically divided into M1A horizontal zone, puts down in each horizontal zone
Row is equipped with N1A scanning pattern H；
The cemented carbide powder last layer is divided into M in the horizontal direction2A vertical region, puts down in each vertical region
Row is equipped with N2A scanning pattern V；
The high energy beam is controlled along M1Scanning pattern H (m in a horizontal zone1, n1) and M2Sweeping in a vertical region
Retouch path V (m2, n2) alternately the cemented carbide powder last layer is scanned, until all scanning patterns all use, wherein
m1=1,2,3 ... M1, n1=1,2,3 ... N1, m2=1,2,3 ... M2, n2=1,2,3 ... N2。
Preferably, it is described shape cemented carbide parts after, further include：
The unfused spherical cemented carbide powder on the cemented carbide parts periphery is cleared up, and to the hard alloy zero
The surface of part carries out smoothing processing.
The present invention can realize the increasing material manufacturing for the part of raw material to hard alloy, and the cemented carbide parts shaped
Forming accuracy higher.Bottom plate or formed part section are scanned by high energy beam scanning so that bottom plate or into
The part section of shape is in higher state of temperature so that cemented carbide parts shaping stress is low, print procedure hard alloy zero
Part will not cracking or tearing tendency is small, and preheating is scanned to the cemented carbide powder last layer of laying by high energy beam and is scanned molten
Change, can be completely melt cemented carbide powder so that the cemented carbide parts consistency shaped is high.
Brief description of the drawings
Fig. 1 is the flow chart of the manufacture method of cemented carbide parts of the present invention；
Fig. 2 is the schematic diagram of the manufacture method high energy beam scanning pattern of cemented carbide parts of the present invention.
Embodiment
Further illustrate technical scheme below with reference to the accompanying drawings and specific embodiments.
The present invention provides a kind of manufacture method of cemented carbide parts, it is by increases material manufacturing technology by cemented carbide powder
Cemented carbide parts are printed as, specifically, the manufacture method comprises the following steps：
S10, by part section formed on the bottom plate or bottom plate on high energy beam scanning powder bed, make on bottom plate or bottom plate
Formed part section temperature reaches preset temperature.
In this step, the fusing point of above-mentioned baseboard material and the fusing point of cemented carbide powder powder material approach.Preferably, above-mentioned bottom
The material of plate is also hard alloy, and the material of its property and fusing point and cemented carbide powder approaches or identical.
Before the printing of cemented carbide powder powder material is carried out first, bottom plate is scanned by high energy beam first, is made
Obtain backplate surface temperature and rise to preset temperature.In the present embodiment, above-mentioned preset temperature is 700 DEG C -2000 DEG C, is preferably 800
℃-1000℃.By by plate scanning to the preset temperature, enabling to the printing to cemented carbide powder to be in higher temperature
Degree state so that cemented carbide parts shaping stress is low, and cemented carbide parts will not cracking in print procedure or tearing tendency is small.
It is that bottom plate is scanned to make it should be noted that when carrying out the printing of cemented carbide powder powder material first
Surface temperature reaches preset temperature.And when not being that cemented carbide powder powder material is printed first, on bottom plate at this time
Part section formed with shaping, is at this time then directly scanned the part section of the shaping by high energy beam so that this into
The surface temperature of the part section of shape reaches preset temperature.
Spherical cemented carbide powder is laid with S20, part section formed on bottom plate or on bottom plate.
I.e. after step S10 is heated to preset temperature to bottom plate or the scanning of formed part section, by increasing material system
Make device power spreading device carry out cemented carbide powder laying, due to traditional cemented carbide powder particle be it is irregular,
Increasing material manufacturing is cannot be used for, therefore, spherical cemented carbide powder is used in the present embodiment.It is formed i.e. on bottom plate or on bottom plate
Part section on be laid with spherical cemented carbide powder, form cemented carbide powder last layer.In the present embodiment, above-mentioned cemented carbide powder
The thickness of last layer is 50 microns -200 microns, is preferably 50 microns -100 microns.
In this step, above-mentioned spherical cemented carbide powder is made of plasma spheroidization technique, specifically, the plasmasphere
The technical principle of change is：Under high frequency electric source effect, inert gas (such as argon gas) is ionized, and forms stable high temperature inert gas
Plasma；Material powder in irregular shape is sprayed into plasmatorch with delivery gas (nitrogen) through powder feeder, powder particle
Substantial amounts of heat is absorbed in high-temperature plasma, surface is melted rapidly, and enters reactor with high speed, in inert atmosphere
Lower quick cooling.Under the action of surface tension, cooled and solidified globulate cemented carbide powder；Subsequently enter and received in rewinding room
Collection gets up.By controlling plasma spheroidization technique or by screening, the spherical hard alloy for setting particle size range can be obtained
Powder.In the present embodiment, above-mentioned spherical cemented carbide powder particle size range is 15 microns -150 microns, preferable powder diameter model
Enclose for 45 microns -105 microns.
In the present embodiment, the raw material of above-mentioned cemented carbide powder include but not limited to W-Co kind (WC+Co), tungsten titanium cobalt class
(WC+TiC+Co), the hard alloy of the series such as tungsten tantalum cobalt class (WC+TaC+Co), tungsten titanium tantalum cobalt class (WC+TiC+TaC+Co).Tool
Body, the present embodiment has selected the hard alloy such as WC+10%Co, WC+20%Co as raw material.
S30, be scanned preheating to the cemented carbide powder last layer laid.
After step S20 forms cemented carbide powder last layer, preheating is scanned to cemented carbide powder last layer by high energy beam,
I.e. first so that the cemented carbide powder last layer be in a higher temperature, in the present embodiment, scanning preheat after cemented carbide powder
The temperature of last layer is 700 DEG C -2000 DEG C.
S40, be scanned fusing to the cemented carbide powder last layer after preheating, shapes new part section.
After design temperature is preheated to the scanning of cemented carbide powder last layer, by high energy beam to the hard alloy after the preheating
Powder bed is scanned fusing, to form new part section.In fusion process is scanned, the process of above-mentioned scanning fusing includes
Melt the profile in section, melt the filling line of cross-sectional internal.In this step, cemented carbide powder is completely melt by high energy beam,
Then solidify again and form new part section.
It is pointed out that during increasing material manufacturing, when high energy beam melts cemented carbide powder powder material, hard alloy
High melting point metal compound (such as WC) volatilization in dusty material is few, and it is more to volatilize if the binding metal (such as Co) of low melting point, this
After resulting in increasing material manufacturing, the ratio of the low melting point binding metal in material declines, and is unfavorable for the optimal of cemented carbide parts
Shaping.Therefore, in this step, it is also necessary to the percentage composition of cemented carbide powder is designed, by cemented carbide powder
The percentage composition of low melting point bonded metal properly increase, to compensate the loss of the low melting point bonded metal in increasing material manufacturing,
It is specific as follows：
The percentage composition of low melting point binding metal in spherical cemented carbide powder is arranged to x+ △ x, wherein：X is
The target component percentage of low melting point binding metal in the cemented carbide parts, △ x are to shape the hard alloy zero
Spherical cemented carbide powder needed for part is in fusing, the loss amount of its low melting point binding metal.With cemented carbide powder powder material
Exemplified by WC+20%Co, by after high energy beam increasing material manufacturing, the percentage composition of Co can drop to 15%, that is,
During increasing material manufacturing, Co can volatilize 5%.Therefore, before the increasing material manufacturing of part section is carried out every time, by the component hundred of Co
Point ratio is arranged to 25%, after increasing material manufacturing, since Co can volatilize 5% so that Co in finally formed part section
Percentage composition is 20%.I.e. by this way, realize and volatilize to the low melting point binding metal in spherical cemented carbide powder
Loss amount compensation.
It should be noted that in the present embodiment, the value of above-mentioned △ x is directly proportional to the energy density of the high energy beam.It is i.e. high
The energy density of beam is higher, and the loss amount of low melting point bonded metal is bigger, and △ x values are bigger；Conversely, the energy density of high energy beam
Lower, the loss amount of low melting point bonded metal is smaller, and △ x values are smaller.Specifically, △ x values can be obtained according to experiment.
The energy density of above-mentioned high energy beam depends on layer thickness, the power of high energy beam, the sweep speed of high energy beam, height
Scan line spacing of beam etc..The energy density of high energy beam is calculated using the following formula：
Energy density=high energy beam power/(between the scan line of sweep speed × high energy beam of layer thickness × high energy beam
Away from).The average heat input that the cemented carbide powder of namely unit volume obtains within the unit interval.
In the present embodiment, above-mentioned high energy beam when being scanned preheating, is realized using grid type scan mode.Specifically
, Fig. 2 is can refer to, grid type scanning includes：
Cemented carbide powder last layer is vertically divided into M in advance1A horizontal zone, above-mentioned M1A region overlay is entirely hard
The cross section of matter alloy part, N is equipped with each area in parallel1A scanning pattern H；Afterwards, by cemented carbide powder last layer
It is divided into M in the horizontal direction2A vertical region, N is equipped with each vertical area in parallel2A scanning pattern, likewise, above-mentioned M2
A region also covers the cross section of whole cemented carbide parts.
Afterwards, high energy beam is controlled along M1Scanning pattern H (m in a horizontal zone1, n1) and M2In a vertical region
Scanning pattern V (m2, n2) alternately cemented carbide powder last layer is scanned, until all scanning patterns all use, wherein m1
=1,2,3 ... M1, n1=1,2,3 ... N1, m2=1,2,3 ... M2, n2=1,2,3 ... N2。
When carrying out pre-heating scan, first, the scanning pattern in above-mentioned each region is numbered, for example, by M1A region
First interior scanning pattern number consecutively is H (1,1), H (2,1), H (3,1) ... H (m1, 1), by M1Article 2 in a region
Scanning pattern number consecutively is H (1,2), H (2,2), H (3,2) ... H (m1, 2), and so on, by M1N in a region1Bar
Scanning pattern number consecutively is H (1, n1), H (2, n1), H (3, n1)…H(m1, n1).Meanwhile by M2First in a region is swept
Path number consecutively is retouched as H (1,1), H (2,1), H (3,1) ... H (m2, 1), by M2Article 2 scanning pattern in a region is successively
Numbering is H (1,2), H (2,2), H (3,2) ... H (m2, 2), and so on, by M2N in a region2Bar scanning pattern is successively
Numbering is H (1, n2), H (2, n2), H (3, n2)…H(m2, n2).By above-mentioned numbering, that is, form the scanning needed for grid type scanning
Path.
Then, control high energy beam is scanned according to the grid type scanning pattern of above-mentioned formation successively, and specifically control is high
Beam is successively scanned cemented carbide powder last layer by following scanning rule：
H(1-1)、V(1-1)、H(2-1)、V(2-1)、H(3-1)、V(3-1)……H(m1-1)、V(m2-1)；H(1-2)、V
(1-2)、H(2-2)、V(2-2)、H(3-2)、V(3-2)……H(m1-2)、V(m2-2)；……；H(1-n1)、V(1-n2)、H(2-
n1)、V(2-n2)H(3-n1)、V(3-n2)……H(m1-n1)、V(m2-n2), until high energy beam closes hard along all scanning patterns
Bronze last layer run-down, that is, complete the scanning of whole grid type, then repeatedly above procedure, heats the cemented carbide powder repeatedly
Last layer is preheated, until the temperature of whole cemented carbide powder last layer reaches design temperature.
S50, the laying for repeating cemented carbide powder last layer, preheating and fusing step, until shaping cemented carbide parts.
I.e. after the part section of one layer of shaping is formed, the laying, pre- of next layer of cemented carbide powder last layer can be carried out
Heat and fusing step, i.e. repeat step S20-S40, until shaping cemented carbide parts.
S60, the unfused spherical cemented carbide powder on cleaning cemented carbide parts periphery, and to cemented carbide parts
Surface carries out smoothing processing.
I.e. after cemented carbide parts are shaped, by the unfused spherical cemented carbide powder on cemented carbide parts periphery
Clean out, smoothing processing then is carried out to the surface of the cemented carbide parts, forms final finished.
The present embodiment can realize the printing to cemented carbide parts by above-mentioned steps S10-S60 by increasing material manufacturing
Shaping, and the forming accuracy higher of the cemented carbide parts of which shaping.And the hard alloy by high energy beam to laying
Powder bed is scanned preheating and scanning fusing, can be completely melt cemented carbide powder so that the hard alloy zero shaped
Part consistency is high.
It should be noted that in the present embodiment, above-mentioned high energy beam is specially electron beam, which is placed in a vacuum ring
Under border, and the vacuum environment is by helium perfusion, specifically, being that air pressure is 0.1Pa- in vacuum environment under helium perfusion
0.5Pa.By being scanned under the high vacuum environment using electron beam to cemented carbide powder, cemented carbide powder can be prevented
End oxidation, and by helium perfusion, can reduce the evaporation loss of low melting point binding metal in cemented carbide powder, can be with
Effectively prevent accumulation of the electric charge in cemented carbide powder powder material, avoid cemented carbide powder last layer defeated and dispersed.
Obviously, the above embodiment of the present invention is just for the sake of clear explanation example of the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (10)
1. a kind of manufacture method of cemented carbide parts, it is characterised in that comprise the following steps：
By part section formed on the bottom plate or bottom plate on high energy beam scanning powder bed, make on the bottom plate or the bottom plate
Formed part section temperature reaches preset temperature；
Spherical cemented carbide powder is laid with the bottom plate or on the bottom plate in formed part section；
Preheating is scanned to the cemented carbide powder last layer laid；
Fusing is scanned to the cemented carbide powder last layer after preheating, shapes new part section；
The laying, preheating and fusing step of cemented carbide powder last layer are repeated, until shaping cemented carbide parts.
2. the manufacture method of cemented carbide parts according to claim 1, it is characterised in that further include：
The percentage composition of low melting point binding metal in the spherical cemented carbide powder is arranged to x+ △ x, wherein：X is
The target component percentage of low melting point binding metal in the cemented carbide parts, △ x are to shape the hard alloy zero
Spherical cemented carbide powder needed for part is in fusing, the loss amount of its low melting point binding metal.
3. the manufacture method of cemented carbide parts according to claim 2, it is characterised in that the value of the △ x with it is described
The energy density of high energy beam is directly proportional.
4. the manufacture method of cemented carbide parts according to claim 3, it is characterised in that the energy of the high energy beam is close
Degree is calculated using the following formula：
Energy density=high energy beam power/(the scan line spacing of sweep speed × high energy beam of layer thickness × high energy beam).
5. the manufacture method of cemented carbide parts according to claim 1, it is characterised in that the high energy beam is electronics
Beam, and the electron beam is under vacuum environment, and the vacuum environment passes through helium perfusion.
6. the manufacture method of cemented carbide parts according to claim 1, it is characterised in that the spherical cemented carbide powder
End is made of plasma spheroidization technique.
7. the manufacture method of cemented carbide parts according to claim 1, it is characterised in that the preset temperature is 700
℃-2000℃。
8. the manufacture method of cemented carbide parts according to claim 1, it is characterised in that the preheating uses grid type
Scan mode is scanned.
9. the manufacture method of cemented carbide parts according to claim 8, it is characterised in that the grid type scanning bag
Include：
The cemented carbide powder last layer is vertically divided into M1A horizontal zone, it is parallel in each horizontal zone to set
There is N1A scanning pattern H；
The cemented carbide powder last layer is divided into M in the horizontal direction2A vertical region, sets in each vertical area in parallel
There is N2A scanning pattern V；
The high energy beam is controlled along M1Scanning pattern H (m in a horizontal zone1, n1) and M2Scanning road in a vertical region
Footpath V (m2, n2) alternately the cemented carbide powder last layer is scanned, until all scanning patterns all use, wherein m1=
1,2,3…M1, n1=1,2,3 ... N1, m2=1,2,3 ... M2, n2=1,2,3 ... N2。
10. the manufacture method of cemented carbide parts according to claim 1, it is characterised in that described to shape hard conjunction
After metal parts, further include：
The unfused spherical cemented carbide powder on the cemented carbide parts periphery is cleared up, and to the cemented carbide parts
Surface carries out smoothing processing.
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| CN201711362862.9A CN107999754A (en) | 2017-12-18 | 2017-12-18 | A kind of manufacture method of cemented carbide parts |
| CN201811006376.8A CN109128164A (en) | 2017-12-18 | 2018-08-30 | A kind of manufacturing method of cemented carbide parts |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201800010161A1 (en) * | 2018-11-08 | 2020-05-08 | Samputensili Cutting Tools S R L | SELECTIVE LASER FUSION PROCESS AND HARD METAL CUTTING TOOL |
| CN111215628A (en) * | 2019-12-06 | 2020-06-02 | 西北有色金属研究院 | Planning method for scanning path of 3D printing dot matrix material |
| CN112139494A (en) * | 2020-06-28 | 2020-12-29 | 西安航天发动机有限公司 | High-precision and unsupported selective laser melting forming method |
| CN112143927A (en) * | 2020-09-16 | 2020-12-29 | 台州华联粉末冶金制品股份有限公司 | Method and device for preparing hard alloy parts |
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| CN110042292B (en) * | 2019-06-03 | 2020-05-26 | 湖南伊澍智能制造有限公司 | Hard alloy-diamond composite material and preparation method thereof |
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| US20050242473A1 (en) * | 2004-04-28 | 2005-11-03 | 3D Systems, Inc. | Uniform thermal distribution imaging |
| CN103949640B (en) * | 2014-05-19 | 2016-05-04 | 北京航空航天大学 | A kind of electron beam RP technique is prepared the method for Nb-Si based ultra-high temperature alloy |
| CN103949646B (en) * | 2014-05-19 | 2016-05-04 | 北京航空航天大学 | A kind of preparation method of Nb-Si based ultra-high temperature alloy turbine blade |
| CN105328913A (en) * | 2015-11-30 | 2016-02-17 | 天津清研智束科技有限公司 | Powder laying device and additive manufacturing device |
| CN205148936U (en) * | 2015-11-30 | 2016-04-13 | 天津清研智束科技有限公司 | Spread powder device and vibration material disk device |
| CN105458256A (en) * | 2015-12-07 | 2016-04-06 | 株洲西迪硬质合金科技股份有限公司 | Metal-based composite material and material additive manufacturing method thereof |
| CN105458260B (en) * | 2015-12-28 | 2019-06-25 | 天津清研智束科技有限公司 | A kind of increasing material manufacturing device and method |
| CN106367652B (en) * | 2016-09-18 | 2018-05-18 | 广东工业大学 | A kind of hard alloy particle and preparation method thereof and hard alloy and preparation method thereof |
| CN106282718B (en) * | 2016-09-18 | 2018-11-02 | 广东工业大学 | A kind of gradient distribution hard alloy and preparation method thereof |
| CN106825569B (en) * | 2017-03-02 | 2018-12-11 | 天津清研智束科技有限公司 | Increasing material manufacturing method and increasing material manufacturing device with pre- heat function |
| CN107020380B (en) * | 2017-06-02 | 2020-01-14 | 清华大学天津高端装备研究院 | Additive manufacturing device and method capable of performing online heat treatment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201800010161A1 (en) * | 2018-11-08 | 2020-05-08 | Samputensili Cutting Tools S R L | SELECTIVE LASER FUSION PROCESS AND HARD METAL CUTTING TOOL |
| CN111215628A (en) * | 2019-12-06 | 2020-06-02 | 西北有色金属研究院 | Planning method for scanning path of 3D printing dot matrix material |
| CN111215628B (en) * | 2019-12-06 | 2020-11-24 | 西北有色金属研究院 | Planning method for scanning path of 3D printing dot matrix material |
| CN112139494A (en) * | 2020-06-28 | 2020-12-29 | 西安航天发动机有限公司 | High-precision and unsupported selective laser melting forming method |
| CN112143927A (en) * | 2020-09-16 | 2020-12-29 | 台州华联粉末冶金制品股份有限公司 | Method and device for preparing hard alloy parts |
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