CN108213886A - A kind of profile-followed runner radiator based on stack of sheets connection and preparation method thereof - Google Patents
A kind of profile-followed runner radiator based on stack of sheets connection and preparation method thereof Download PDFInfo
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- CN108213886A CN108213886A CN201810058872.1A CN201810058872A CN108213886A CN 108213886 A CN108213886 A CN 108213886A CN 201810058872 A CN201810058872 A CN 201810058872A CN 108213886 A CN108213886 A CN 108213886A
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- Prior art keywords
- profile
- runner
- stack
- sheet metal
- followed
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
Abstract
The invention discloses a kind of profile-followed runner radiators based on stack of sheets connection and preparation method thereof；The design and foundation of runner heat sink part model are carried out in threedimensional model design software, and import slices software is layered part model to be prepared by appointed thickness cutting, it generates code file needed for Laser Processing and imports laser cutting system and cut into sheet metal, then each sheet metal is layering according to profile-followed runner sequence after accumulation clamps successively carries out the vacuum pressure thermal diffusion welding containing middle layer；The complicated water runner radiator with complicated inner cavity is directly manufactured using the lamination Joining Technology of thin slice, it is small that it is manufactured rear part overall deformation, inner cavity continuity is excellent, properties of product consistency is good, simultaneously eliminate long period, high cost die sinking process, conducive to the design that advanced optimizes of runner radiator, the surface of runner precision fitting complex curved surface parts is realized, and then improve formed precision and its heat dissipation performance.
Description
Technical field
The present invention relates to complicated profile-followed runner radiator manufacture more particularly to a kind of profile-followed streams based on stack of sheets connection
Road radiator and preparation method thereof.
Background technology
Diffusion Welding containing middle layer refers to process intermediate layer material between interface to be welded, workpiece to be welded is pressed
Together, it is placed in vacuum or protective atmosphere, after certain temperature and pressure effect regular hour, work piece interface atom
It fully spreads to realize a kind of solid-state bonding process being reliably connected each other.
Traditional runner radiator needs to make multiple molds, drills in each mold, passes through various pieces
It is welded to connect and is simple to manufacture runner radiator, this runner radiator generally only has linear type or straight line chiasma type runner, nothing
Method manufactures the runner with spiral shape or with more complex-curved chamber, causes radiator heat-dissipation performance general, available
Approach is also few, meanwhile, the service life that secondary operation also easily leads to mold greatly shortens, precision also big heavy discount, manufactured
Simple runner radiator can not meet practical manufacture needs, therefore, efficiently complicated runner radiator is in a very long time
It is inside merely resting on theory stage always.
Invention content
The shortcomings that it is an object of the invention to overcome the above-mentioned prior art and deficiency provide a kind of based on stack of sheets connection
Profile-followed runner radiator and preparation method thereof, to realize the rapid shaping of complicated water runner radiator, save long period, high cost
Manufacturing process, preparation process of the present invention can enable runner inner cavity have good formed precision and improve with it is complicated
The overlapping degree of curved surface part.
The present invention is achieved through the following technical solutions：
A kind of preparation method of the profile-followed runner radiator based on stack of sheets connection, includes the following steps：
Step 1：The design and foundation of runner heat sink part model are carried out in threedimensional model design software, is protected
Stl file is saved as, and imports computer Slice Software, using computer Slice Software to part model to be prepared by specified
Thickness cutting layering, obtains the surface layer X-Y scheme profile needed for each CAD model, the cross section of each layer is extracted by computer
Profile information, code file needed for generation Laser Processing；
Step 2：The code file of step 1 extraction is imported into laser cutting system, laser cutting system, which automatically generates, to be added
Work path, computer control laser cutting head motion path, by thickness 0.05-0.1mm sheet metal fly-cutting shape
The laminate structure consistent with CAD model cross-sectional shape into multi-disc, while treated gained sheet metal with the method for machinery
Face of weld is removed surface oxides, and surface roughness to be welded is made to reach 3.2 μm or more；
Step 3：Vacuum heat diffusion is welded；By step 2 sheet metal according to part model in threedimensional model design software
Flow channel shape carry out mechanical means and stack positioning, and paste solder is coated between each layer of sheet metal, then with fixture into
Row fixes to clamp, and ensures that each interlayer is in the state that fits closely, and forms one according to profile-followed runner design sequence successively layer stackup
Add the layer of metal foil of accumulation, be placed into the glass tube with vacuum full of inert gas argon gas, then glass tube with vacuum is put into height
It warms in treatment furnace 5, carries out vacuum pressure thermal diffusion welding, eventually form connecting based on stack of sheets for required complicated water runner shape
The profile-followed runner radiator connect；
Profile-followed runner radiator after thermal diffusion welding fabrication is surface-treated, its surface is made to reach requirement.
Appointed thickness cutting lift height is 50-100 μm described in step 1, which flows between can avoiding the occurrence of adjacent layer
The stepped phenomenon of road hole.
Sheet metal described in step 2 is 304 stainless steels, copper or spring steel leaf.
Paste solder described in step 3 is brazing solder.
Described in step 3 to sheet metal carry out mechanical positioning methods be with two kinds of different size positioning pins of M1 and M2 into
Row positioning is fixed, to improve the precision that thin slice stacking positions in the process.
Constant vacuum pressure thermodiffusion welding jointing temp described in step 3 is 1000 DEG C；
The vacuum pressure thermal diffusion welding heated at constant temperature time is 10h；
The vacuum degree of the vacuum environment is 50kPa, and inert atmosphere is argon gas.
Surface treatment method described in step 3 includes mechanical polishing, oozes Lasaxing Oilfield, nital processing.
A kind of profile-followed runner radiator based on stack of sheets connection, which is to offer hole by multi-disc
Connection stacks the sheet metal in hole layer by layer successively, is interconnected per the hole on adjacent layer sheet metal, to form heat dissipation
The global shape of the profile-followed runner of device.
This per adjacent layer sheet metal on hole be interconnected, refer to hole on adjacent layer sheet metal axis that
This deviates or overlaps；The axis runout angle of each adjacent holes and coincidence angle, it is whole relative to profile-followed runner by this layer of hole
Depending on sectional position where body setting shape.
The sheet metal is 304 stainless steels, copper or the spring steel plate that thickness is 50-100 μm.
The present invention is had the following advantages and effect relative to the prior art：
The Joining Technology of the sheet metal of the present invention, eliminates that the period is long, and mold production process of high cost effectively saves
Manpower and expense are saved.
The Joining Technology of sheet metal of the present invention can largely improve the manufacture essence with complicated inner cavity part
Degree, avoids the occurrence of stepped phenomenon, part is enable to better adapt to complex working condition, and the product made has higher molding essence
Degree, the design and optimization for metal parts provide more accurate experimental result.
The Joining Technology of sheet metal of the present invention is utilized intermediate brazing solder layer and carries out thin slice connection, reduces experiment
Required welding temperature and time, and switching performance is more preferably, improves the molding consistency of part；In appropriate experiment parameter
Lower carry out vacuum diffusion bonding, the welded rate being effectively improved between thin slice reduce the degree of camber and deformation between thin slice, into one
Step improves the using effect of part.
It after prolonged Diffusion Welding, is completely embedded between sheet metal, non-deformability greatly improves, and improves production
The service life of product.
Radiator after Diffusion Welding can be arbitrary shape, such as complicated helical cavity, this structure
The more traditional simple runner radiator of runner has better heat dissipation performance, and service life is longer, improves the use effect of radiator
Rate.
The thin slice Joining Technology of the present invention, connect the profile-followed runner radiator after being formed through sheet metal has again with corresponding
The heat source part fitting of miscellaneous curved surface improves heat conduction and heat radiation performance so that radiating efficiency improves more than 30%.
Description of the drawings
Fig. 1 is the present invention is based on the preparation process general flow charts of profile-followed runner radiator that stack of sheets connects.
Fig. 2 is the process schematic of vacuum heat diffusion soldering.
Fig. 3 is runner heat sink model schematic diagram.
Fig. 4 is runner radiator middle section schematic diagram.
In figure：Sheet metal 1；Laser cutting head 2；Layer of metal foil 3 after stacking gradually；Fixture 4；High temperature heat treatment furnace
5。
Specific embodiment
The present invention is more specifically described in detail with reference to specific embodiment.
Embodiment
The present invention is based on the preparation methods of the profile-followed runner radiator of stack of sheets connection, can be achieved by the steps of：
(1) by the analysis of the purposes of complicated water runner radiator and effect prediction, with the 3 d modeling software of computer into
Row complicated water runner heat sink model establish, model three-dimensional axonometric drawing and median surface schematic cross-section as shown in Figure 3 and Figure 4, by mould
Type saves as (* STL) formatted file.
(2) stl file is imported in the Slice Software in computer, heat sink model is carried out with 50-100 μm of thickness
Cutting layering, forming multilayer has the CAD model of varying cross-section shape, and the profile information of each layer is extracted with computer, raw
Into the code file needed for laser dicing sheet；
(3) profile information of each layer is sequentially introduced into laser-processing system, the Path selection of generation cutting metal, laser
Cutting head carries out excision forming according to the machining path that computer generates to (stainless steel) sheet metal that thickness is 50-100 μm,
Obtain each layer (entity) layer of metal foil identical with virtual level cross-sectional shape, by cut complete multilayer metal foil layer into
Row sequence is put, and sanding and polishing is carried out to the surface to be welded of every layer of sheet metal, and burr and the oxygen on surface occurs in removal processing
Compound, the grease of skim-coat is removed with nital, and surface impurity is washed away with ultrasonic activation, makes each interlayer contact surface thick
Rugosity reaches 3.2 μm or more.
(4) each layer sheet metal is superimposed in order, judges every layer of metal with two different size of dowel holes
The correct of the positive and negative of thin slice is put, and completed stack sorts after good whole sheet metals, is applied in the interlayer of each layer of sheet metal
Appropriate paste brazing solder is spread, fixes each flap position with M1 and M2 positioning pin, it is ensured that each layer of metal foil is equal
Pressure clamping is carried out to each layer sheet metal with fixture after correctly putting, ensures to paste in close between each sheet metal synusia
Conjunction state, and by glass tube with vacuum of the one-piece machine member merging full of inert gas argon gas, glass tube with vacuum is put into high warm
In treatment furnace, the technological parameter of vacuum heat diffusion experiment, welding temperature is 1000 DEG C, diffusion time 10h, and vacuum degree is
50kPa, inert atmosphere are argon gas.
(5) the sheet metal synusia connection in vacuum tube, the gold between adjacent metal synusia are observed in thermal diffusion furnace
Belong to atom adequately to be spread, stomata and gap disappear between synusia, and situation is bonded between synusia and reaches requirement of experiment, will be passed through
Forming part after the welding of long-time vacuum heat diffusion takes out from high temperature thermal diffusion furnace, and being carried out in the environment of 500 DEG C should
Power is annealed, and is eliminated the internal stress that experiment part generates in the welding process, is positioned in room temperature and forming part is carried out surface again
Sanding and polishing improves surface roughness, the roughness of piece surface is made well to reach hereinafter, eventually forming formed precision at 5 μm
20-50 μm, the profile-followed runner radiator 6 of the high complexity of inner cavity continuity.
Time and cost present invention eliminates multiple mold manufacturings, using the lamination Joining Technology between sheet metal, directly
Connect manufacture part all has higher formed precision in terms of the continuity of thickness and piece interlayer, is connected by sheet metal lamination
The profile-followed runner radiator precision of method manufacture reaches 20-50 microns, and surface roughness Ra is below 5 microns.Piece interlayer is basic
There is no stepped phenomenon to occur, be suitble to the part manufacture with complicated inner cavity or surface；Sheet metal manufactures the mistake of part model
Journey also makes the design of part model and structure optimization period shorter；Being completely embedded between part thin slice after Diffusion Welding makes the property of part
Can more it stablize, using effect is more preferably；Molding inner cavity of component has and the corresponding runner of curved surface part, heat dissipation performance
Radiator compared with traditional handicraft manufacture is more excellent, effectively improves radiating efficiency up to more than 30%, service life greatly improves.
As described above, the present invention can be better realized.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, other any Spirit Essences without departing from the present invention
With made under principle change, modification, replacement, combine, simplification, should be equivalent substitute mode, be included in the present invention
Within protection domain.
Claims (10)
1. a kind of preparation method of the profile-followed runner radiator based on stack of sheets connection, it is characterised in that include the following steps：
Step 1：The design and foundation of runner heat sink part model are carried out in threedimensional model design software, is saved as
Stl file, and computer Slice Software is imported, appointed thickness is pressed to part model to be prepared using computer Slice Software
Cutting layering, obtains the surface layer X-Y scheme profile needed for each CAD model, the cross-sectional profiles of each layer is extracted by computer
Information, code file needed for generation Laser Processing；
Step 2：The code file of step 1 extraction is imported into laser cutting system, laser cutting system generation machining path, meter
Calculation machine controls the motion path of laser cutting head, and sheet metal fly-cutting formation multi-disc of the thickness in 0.05-0.1mm is same
The consistent laminate structure of CAD model cross-sectional shape, while with the method for machinery by the surface to be welded of gained sheet metal
Surface oxides are removed, surface roughness to be welded is made to reach 3.2 μm or more；
Step 3：Vacuum heat diffusion is welded；By step 2 sheet metal according to the stream of part model in threedimensional model design software
Road shape carries out mechanical means and stacks positioning, and paste solder is coated between each layer of sheet metal, then consolidated with fixture
Clamp is tight, ensures that each interlayer is in and fits closely state, forms one and is layering successively heap according to profile-followed runner design sequence
Long-pending layer of metal foil is placed into the glass tube with vacuum full of inert gas argon gas, then glass tube with vacuum is put into high warm
In treatment furnace 5, carry out vacuum pressure thermal diffusion welding, eventually form needed for complicated water runner shape connected based on stack of sheets
Profile-followed runner radiator；
Profile-followed runner radiator after thermal diffusion welding fabrication is surface-treated, its surface is made to reach requirement.
2. the preparation method of the profile-followed runner radiator according to claim 1 based on stack of sheets connection, it is characterised in that：
Appointed thickness cutting lift height is 50-100 μm described in step 1, which can avoid the occurrence of runner hole rank between adjacent layer
Scalariform phenomenon.
3. the preparation method of the profile-followed runner radiator according to claim 2 based on stack of sheets connection, it is characterised in that：
Sheet metal described in step 2 is 304 stainless steels, copper or spring steel leaf.
4. the preparation method of the profile-followed runner radiator according to claim 3 based on stack of sheets connection, it is characterised in that：
Paste solder described in step 3 is brazing solder.
5. the preparation method of the profile-followed runner radiator according to claim 3 based on stack of sheets connection, it is characterised in that：
It is with two kinds of different size positioning pins of M1 and M2 position admittedly to the mechanical positioning methods that sheet metal carries out described in step 3
It is fixed, to improve the precision that thin slice stacking positions in the process.
6. the preparation method of the profile-followed runner radiator according to claim 3 based on stack of sheets connection, it is characterised in that：
Constant vacuum pressure thermodiffusion welding jointing temp described in step 3 is 1000 DEG C；
The vacuum pressure thermal diffusion welding heated at constant temperature time is 10h；
The vacuum degree of the vacuum environment is 50kPa, and inert atmosphere is argon gas.
7. the preparation method of the profile-followed runner radiator according to claim 1 based on stack of sheets connection, it is characterised in that：
Surface treatment method described in step 3 includes mechanical polishing, oozes Lasaxing Oilfield, nital processing.
8. a kind of profile-followed runner radiator based on stack of sheets connection, which is characterized in that the profile-followed runner radiator is by more
Piece opens up the sheet metal of hole, and connection stacks layer by layer successively, is interconnected per the hole on adjacent layer sheet metal,
To form the global shape of the profile-followed runner of radiator.
9. the profile-followed runner radiator according to claim 8 based on stack of sheets connection, which is characterized in that this is per adjacent layer
Hole on sheet metal is interconnected, and refers to that the axis of the hole on adjacent layer sheet metal offsets with one another or overlaps；Respectively
The axis runout angle of adjacent holes and coincidence angle, as this layer of hole relative to cutting where profile-followed runner set overall shape
Depending on the position of face.
10. the profile-followed runner radiator according to claim 9 based on stack of sheets connection, which is characterized in that the metal
Thin slice is 304 stainless steels, copper or the spring steel plate that thickness is 50-100 μm.
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| CN201810058872.1A CN108213886A (en) | 2018-01-22 | 2018-01-22 | A kind of profile-followed runner radiator based on stack of sheets connection and preparation method thereof |
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| CN201810058872.1A CN108213886A (en) | 2018-01-22 | 2018-01-22 | A kind of profile-followed runner radiator based on stack of sheets connection and preparation method thereof |
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Cited By (5)
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|---|---|---|---|---|
| CN107962358A (en) * | 2017-12-15 | 2018-04-27 | 佛山租我科技有限公司 | The three-dimensionally shaped method of metal parts based on stack of sheets connection |
| CN110883418A (en) * | 2019-11-28 | 2020-03-17 | 苏州创阔金属制品有限公司 | Spiral-flow type atomizing nozzle machining process |
| CN111272530A (en) * | 2018-12-05 | 2020-06-12 | 中广核工程有限公司 | Manufacturing method of coil pipe of nuclear power high-temperature sampling cooler |
| CN113695590A (en) * | 2021-08-06 | 2021-11-26 | 宿迁学院 | Layer-by-layer stacking forming method for low-boiling-point two-dimensional material |
| CN114193104A (en) * | 2021-12-22 | 2022-03-18 | 潍柴动力股份有限公司 | Valve body machining method and valve body |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107962358A (en) * | 2017-12-15 | 2018-04-27 | 佛山租我科技有限公司 | The three-dimensionally shaped method of metal parts based on stack of sheets connection |
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| CN113695590A (en) * | 2021-08-06 | 2021-11-26 | 宿迁学院 | Layer-by-layer stacking forming method for low-boiling-point two-dimensional material |
| CN114193104A (en) * | 2021-12-22 | 2022-03-18 | 潍柴动力股份有限公司 | Valve body machining method and valve body |
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