CN107520409A - A kind of method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing - Google Patents
A kind of method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing Download PDFInfo
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- CN107520409A CN107520409A CN201710640961.2A CN201710640961A CN107520409A CN 107520409 A CN107520409 A CN 107520409A CN 201710640961 A CN201710640961 A CN 201710640961A CN 107520409 A CN107520409 A CN 107520409A
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- sand
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- cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention relates to a kind of method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing, the core is the 3D printing core of monoblock type, some cavities are provided with core, not glued loose sand is stacked in cavity, each surface of the core opens up some clearance holes connected with internal cavity, when removing the loose sand of core inner chamber, preliminary shake-out is carried out first：The loose sand of inner chamber is vibrated into discharge from each clearance hole respectively by way of vibration and carries out preliminary sand removal；Then fluid scouring sand removal is carried out：Fluid is injected with certain flow rate to core inner chamber, and constantly change influent stream and go out to flow direction to change flow direction of the fluid in cavity, enable flow across and wash away the bore passages of core, cavity inwall soft transition layer of sand is impacted by the release effect of washing away of fluid, the sand material fallen is rushed and is discharged with fluid.The method of the present invention sets up some sediment outflows being connected with inner chamber, and hole can realize the sand removal of monoblock type 3D printing core bore passages by vibrating sediment outflow and fluid scouring sediment outflow.
Description
Technical field
The present invention relates to the auxiliary sand removal technology field of 3D printing sand mold, more particularly to a kind of monoblock type of 3D printing
The method for cleaning of the unnecessary sand material in core inner chamber.
Background technology
3D printing brings revolutionary influence by increasing material manufacturing method to conventionally manufactured field, is embodied in multiple fields
Powerful advantage.For example directly printing has the part, mould etc. of labyrinth, can shorten the cycle, R＆D costs are reduced, will
Manufacturing industry brings the new world of Flexible Production into.But 3D printing technique mainly also rests on small lot research and development trial-production at present, or
Small lot customizes the stage, is also far from moving towards batch flexibility manufacture.To find out its cause, the influence in terms of except cost and efficiency
Outside, an also main influence factor is exactly the removal difficulty that 3D integrally prints part excess stock.
The 3D printing technique of main flow can be divided into two kinds, and one kind is stacked in layers method, and another kind is that powder is selectively hard
Change, including laser sintered, injection bonding etc..Usually required during using the complicated part of stacked in layers method print structure various
Support, outer surface support is easier to remove, but the support of internal cavity structure is often difficult to remove.Comparatively speaking, make
It need not be supported when carrying out parts printing with powder selective sclerosing scheme, there are greater advantages.Casting 3D printing core is
Using such a technical scheme.
Casting 3D printing technique, successively selective jet binder prints to sand grains, and the selection of sand grains is from diameter
0.1mm (140 mesh) arrives diameter 0.4mm (the 40 a diameter of 0.38mm of mesh sand grains).When casting 3D printer work, often spread
One layer of sand grains, it is selective therewith to spray a binding agent, inherently there is certain frictional force between sand grains, given again when sanding operates
Certain pressure is given, the degree of packing for laying sand grains is preferable.The printer of single liquid material, sand grains can be premixed into catalysis at present in addition
Agent, sandy mobile is poor, and after the completion of the printing of complicated core, the unnecessary sand grains in internal passage can not be by simply toppling over
Remove.On the other hand, binding agent makes the sand grains of one layer of low hardenability of core surface adhesion, introduced in the interstitial diffusion of sand grains
The problem of core removing surface, make the cleaning of complicated sand core internal cavity more difficult.For this problem, current more uses
Mode is that core is split into polylith core, makes internal passage also exposed, is cleared up using compressed air, after this method is brought
Continuous assembly operation, have also been introduced assembling deviation and gap problem, 3D printing is lost the advantage of directly production complex parts.
The overall internal cleaning problem for printing complicated core is put up with herein proposes a solution.
The content of the invention
The present invention for being not easy to inner chamber sand removal after the sand core structure entirety 3D printing of complicated inner cavity in the prior art
Problem, there is provided a kind of method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing, to solve the clear of complicated inner cavity core
Sand problem.
The object of the present invention is achieved like this, a kind of cleaning side of the unnecessary sand material of Integral sand in-core chamber of 3D printing
Method, the core are the 3D printing core of monoblock type, and some cavities are provided with core, not glued loose sand is stacked in cavity, its
Feature is being that each surface of the core opens up some clearance holes connected with internal cavity, removes core inner chamber
During loose sand, preliminary shake-out is carried out first：The loose sand of inner chamber is vibrated from each clearance hole respectively by way of vibration and discharged
Carry out preliminary sand removal；Then fluid scouring sand removal is carried out：Fluid is injected with certain flow rate to core inner chamber, and constantly changes influent stream
With going out to flow direction to change flow direction of the fluid in cavity, enable flow across and wash away the bore passages of core, pass through fluid
Release effect impact cavity inwall soft transition layer of sand is washed away, the sand material fallen is rushed and is discharged with fluid.
In the sweep-out method of the core bore passages loose sand of the present invention, the internal passage of script closing is opened into some and table
The clearance hole of face connection, printing internal passage and extraneous connection, then make not to be bonded hardening in cavity by mode of vibration
Loose sand carry out preliminary sand removal from the discharge of each clearance hole respectively, the internal passage after preliminary sand removal is due to the effect of binding agent
The surface depletion layer that there be one layer of certain hardening strength on surface needs to remove.This surface depletion layer sand bond is low, has one again
Thickness is determined, so as to which the surface quality of casting, dimensional accuracy and inner inclusion defect can be influenceed, so must go to remove.Through preliminary clear
Sand, inner passage have been got through, and in method of the invention, internal passage surface are cleared up using the fluid of motion, fluid
With it is unsetting the characteristics of, can with all-pervasive, in passage flow when to wall formed rubbing action, by the mistake of surface adhesion
Layer is crossed to peel off and transport.The fluid of motion can be the vias inner walls surface got through with the sand grains reason on the wall of peel adhesion
Sand grains be unilateral adhesion, the fluid molecule of high speed directed movement will form percussion to sand grains, so as to progressively removing transition
Layer of sand, and discharged with the fluid of flowing from outflow port.
Then appropriate steel ball is poured into the cavity of preliminary sand removal, steel ball will simultaneously be enclosed in cavity, and be made by vibration
Steel ball hits the filtering layer of sand of the low hardening of cavity wall, progressively shoots down the sand of transition layer of sand, most afterwards through clearance hole discharge steel ball and
Loose sand, complete the sand removal process of Integral sand in-core road cavity.
To be further easy to implement the connection of sand core internal passage and outer surface, the position of the core inner-cavity structure mutation
A clearance hole being connected with nearest surface is at least opened up, the structural mutation refers to the position that latus rectum size is mutated in core cavity
Or core cavity contour curvature has the position of mutation.The present invention structure in, sand core structure mutation position open up with recently
The clearance hole of surface connection, can be by the inner-cavity structure of complexity by clearance hole and ft connection, in order to loose sand in cavity
Discharge.
For ease of the closure at clearance hole position in sediment outflow, the clearance hole is the straight hole connected with neighbouring internal passage,
A diameter of 4-the 50mm of clearance hole.Because the begin to rehearse position of sand hole of core is belonged to originally in the position of closing, need to arrange after sand removal processing
Sand hole closure reduction core original structure state, in this structure, the clearance hole of straight hole structure, closure is convenient, and close after blocking
Closing property is good.
For ease of the preliminary loose sand removed in cavity, the preliminary shake-out process of shake-out specifically comprises the following steps：
The first step, 3D printing core is fixed on a vibration table, makes to have one of core surface of clearance hole downward, and make clearance hole
Keep sediment outflow unimpeded；Second step, shake table is applied to become and hands over vibration certain time, is made in the cavity that is connected with downward clearance hole
Loose sand is progressively discharged；3rd step, upset core make other core surfaces for having clearance hole or having opening downward, repeat the first step and
The sediment outflow process of second step；Continue to overturn the core repetition first step and the sediment outflow process of second step, until all has clearance hole
And have place and vibrate under the equal warp-wise in surface of opening after without loose sand discharge untill.
The preliminary sand removal method of this method, a kind of process vibrated and topple over loose sand in sediment outflow cavity is realized, is specially：Core
Vibrate sediment outflow during, unhardened unnecessary sand grains, established due to the mantle friction of itself and the compacting operation of equipment compared with
For stable accumulation body, so as to which the mobility of sand grains in itself can not be played.This can be broken by applying a body vibration to core
Kind stable accumulation body.It is sand grains moment is obtained high-speed motion to vibrate to the practical function of sand grains, that is, obtains larger acceleration,
According to Newton's second law, sand grains produces inertia force under own wt effect, so as to depart from the rubbing action of other sand grains, and
Move to new position.Disengaging effect under this effect of vibration is the most prominent from the nearest sand grains performance of clearance hole, so as to used
Property power effect under easily escape rubbing action, and mobility is obtained under self gravitation, and from downward clearance hole stream nearby
Go out, the surface sand grains nearest from clearance hole is gradually cleaned, while sand grain surface gradually inwardly elapses, and passage is gradually got through.Together
When in the presence of vibration, sand grains can not establish taper accumulation in the presence of mantle friction, and occurred level transports row by sand grains
Level sand grains to be transported into quicksand mouth, so as to reach the effect for removing the most unnecessary sand grains of bore passages.
To further speed up sediment outflow speed, when core vibrates with the platform that shakes, negative-pressure ward pipe is provided with outside downward clearance hole
Road is used to aid in sediment outflow.
Further, during preliminary shake-out, the vibration of core is that frequency is 1-31Hz, and amplitude should be less than 1mm's
Oscillation exchange.
It is too small and be not easy to connect with internal passage for ease of clearance hole aperture, before preliminary shake-out, to close to each core
The clearance hole on surface and the loose sand of opening carry out mechanical dredging.
During fluid scouring sand removal, at least one influent stream is set in the surface opening that the bore passages with core are connected
Mouth and at least one outflow port, flow inlet are connected with influent stream for flow tube road, and outflow port is connected to collect out stream with outflow conduit
Fluid and the sand material of discharge, while block other openings, inject wash fluid to flow inlet with certain flow, to flow inlet with
Bore passages between outflow port carry out fluid scouring, to wash away the transition layer of sand on cavity surface, after washing away 3-5 minutes, and switching
Outflow port, or switch flow inlet and outflow port simultaneously, to change fluid flow direction, continue to wash away 3-5 minutes, change fluid again
Flow direction, until each vias inner walls of core inner chamber, after fluid scouring sand removal, that completes inner chamber transition layer of sand washes away cleaning.It is logical
The above-mentioned fluid scouring process of the present invention is crossed, the complete erosion of transition layer of sand on sand core internal cavity is fallen and discharged with fluid.On
Fluid scouring process is stated, for the extremely complex core of internal channel structure, a large amount of bending pipelines and fork be present, fluid is herein
Flow regime in class pipeline can not be judged by experience.Found by computer sim- ulation, stream of the fluid in complex passages
It is dynamic to have following several features：First, the shortest path from flow inlet to outflow port will establish main flood discharge passage, be path integral length
The most short passage of degree, speed also highest, is optimal cleaning effect scope；Secondly, in fork node assignment of traffic will occur for fluid,
Pressure reduces, and pressure reduction size is relevant with sectional area ratio before and after bifurcation point, and each assignment of traffic that diverges is relevant with path length.Cause
This can establish the secondary flow zone of influence in the region close with main flood discharge passage length, claim time flood discharge passage, formed to wall
Enough rubbing actions；3rd, vortex is commonly formed in the bulge-structure of primary and secondary flood discharge passage near field, although these vortexes do not have
The Radial Flow for having convection body forms direct contribution, but fluid motion speed is larger at the big centrifugation radius of vortex, i.e., near
Rate of flow of fluid at wall is high, so effective souring can also be formed, the main flood discharge passage of the above, secondary flood discharge passage and whirlpool
Stream area is the effective cleaning zone of influence.The change and the change of startup time that different flow inlets and outflow port set, flowed to
The different cleaning zones of influence will be established, so the fluid scouring process of the present invention can make by combining different flow through scenario
Clear up the zone of influence and cover all bore passages regions, realize the cleaning to internal all cavities.
To ensure the flow velocity of the flow of fluid, when the flow inlet selects, the larger cast gate of bore, rising head, row are preferentially selected
Gas port or clearance hole are as flow inlet.
It is mixed with the granule medium of volume of fluid 10-15% further to improve flush efficiency, in the fluid, described
The particle diameter of granule medium is 2-4mm.
Further, the fluid is compressed air stream or the immiscible and nonreactive liquid of sand material and binding agent with core
Body, such as the coating of sand mold flow coat.
Brief description of the drawings
Fig. 1 is the sand core structure of the cast iron cylinder head of the 3D printing of monoblock type（Begun to rehearse sand hole）Schematic diagram.
Fig. 2 to 4 is that different influent streams flow to zone of influence schematic diagram with the fluid for going out to flow direction.
Wherein, 1 cast gate；2 steam vents；3 rising heads；4th, 5,6,7,8,9 clearance hole.
Embodiment
Describe the Integral sand in-core chamber of the present invention in detail by taking the overall 3D printing core of cast iron cylinder head casting as an example below
The method for cleaning of unnecessary sand material.
As shown in Figure 1 to print the sand core structure of the cast iron cylinder head of 3D printing, the core is per se with pouring for cast
Mouth 1, steam vent 2 and rising head 5.Also needed for ease of realizing the sediment outflow of the core after overall printing, during Integral sand core structure designs
In other sides, clearance hole 4, clearance hole 5, clearance hole 6, clearance hole 7, clearance hole 8, clearance hole 9, each clearance hole are also set respectively
It is straight hole and is connected respectively with internal neighbouring internal passage, the cast iron cylinder head sand cores of castings internal passage of the present embodiment compares
It is narrow, and there is the position of structural mutation cavity many places, and other structures mutation refers mainly to the mutation of the minimum latus rectum size of cavity
With the mutation of cavity Internal periphery face curvature, said structure mutable site is required to set the clearance hole led directly to neighbouring surface, row
According to the size aperture of bore passages be 4-50mm when sand hole is set, end and adjacent to the bore passages being connected inside clearance hole
It is connected smoothly, baroque inner chamber can be further combined with fluid emulation software, and the sand body of simulation flowing in advance is in cavity
Interior flow regime is with determine suitably to begin to rehearse sand hole position and suitable quantity, the clearance hole in suitable aperture.
The Integral sand cored structure with some clearance holes set as stated above passes through 3D sandings, selective dump spray
The core of binding agent hardening, after 3D printing outlet, the sand of space-consuming outside core is taken away or other works by sand suction pipe
Tool shovel is walked, and core is integrally exposed, now the cavity of sand core internal is full of not glued loose sand.During preliminary shake-out,
The first step, 3D printing core is fixed on a vibration table, makes to have one of core surface of clearance hole downward, and make clearance hole
Keep sediment outflow unimpeded,, can be in the non-row in core bottom when core is fixed on shaking table to ensure the unimpeded of bright clearance hole
Sand position sets support member, prevents clearance hole to be plugged, can first machinery dredging sediment outflow before vibration for narrow clearance hole
Hole makes its normal quicksand under vibrational state；Second step, it is 1-3Hz to apply frequency to shake table, and amplitude should be less than 1mm friendship
Become vibration, time of vibration is no less than 10 seconds, and the loose sand in cavity for making to connect with downward clearance hole is progressively discharged from clearance hole；The
Three steps, upset core make other core surfaces for having clearance hole or having opening downward, repeat the first step and the sediment outflow mistake of second step
Cheng Jinhang vibrates sediment outflow；Continue to overturn the sediment outflow process that core repeats the first step and second step, until it is all have clearance hole and
Have untill being discharged after placing and vibrate under the equal warp-wise in surface of opening without loose sand, complete preliminary sand removal process.
After completing preliminary sand removal, during then carrying out fluid scouring sand removal, during sheet, according to cast iron cylinder head casting
Internal channel structure, by computer software before implementing, analog compression air internally wash away in passage by emulation flowing, divides following
Three fluid scouring implementation Process the present embodiment scour process, first as shown in Fig. 2 using cast gate 3 and rising head 3 as flow inlet,
Exhaust outlet 2, clearance hole 9 and clearance hole get well other clearance holes and exhaust outlet respectively as outflow port, closure, carry out fluid scouring,
Flow inlet is connected by influent stream pipeline with fluid tank, and influent stream pipeline is provided with flow pump and flow valve, controls fluid stream
Speed is 10-30 meter per seconds, washes away desanding efficiency to improve, and is provided for adding the branch line of granule medium on influent stream pipeline,
The granule medium that particle is 2-4mm is added into influent stream pipeline, particle with certain elastic ball to be advisable, in order to avoid right
Core causes major injury, and addition is 10 ~ 50/second, and outflow port passes through outflow conduit connecting fluid collecting box, flushing time
For 5 minutes, for the fluid zone of influence in scour process as shown in Fig. 2 wherein solid line represents main flood discharge passage, dotted line represented time flood discharge
Passage, " " represent vortex；After 5 minutes wash away, the transition layer of sand of cleaning zone of influence inner passage is removed totally substantially,
Then outflow port is switched, as shown in figure 3, outflow port is switched into clearance hole 5 and clearance hole 8, flow inlet is constant, blocks other rows
Sand hole and exhaust outlet, continue to wash away 5 minutes；Switch outflow port again to clearance hole 6 and clearance hole 7, flow inlet is constant, blocks it
Its clearance hole and exhaust outlet, continue to wash away 5 minutes.The sand core structure of the present embodiment, by above-mentioned fluid scouring process, in core
The complete erosion of transition layer of sand on portion's cavity is fallen and discharged with fluid, realizes the cleaning to internal all cavities.
After completing above-mentioned inner chamber sand removal work, must reduction sand core structure do not open up the structure before clearance hole, by with core
It is firm that the corresponding sand material plug of material blocks each clearance hole, then carries out the casting technique mistakes such as follow-up core flow coat, mould assembling
Journey.
Casting 3D is broken in the mechanical oscillation that employ of the above-mentioned Integral sand core bore passages sand removal method innovation of the present invention
The accumulation balance of excess stock is printed, sand grains is recaptured mobility, and enter using the transport effect of steel ball to inner chamber channel table face
Row cleaning, has following clear superiority：
（1）Vibratory equipment can carry out electrical control, realize automation cleaning, advantageously ensure that cleaning effect, and realize flowing water
Wire type operation；
（2）Vibratory equipment control parameter is programmable parameter, including vibration frequency, amplitude etc. are easily achieved Programmed control, work
Skill standardizes and Flexible Production；
（3）Foundry may be selected often with fluid such as compressed air, coating etc. in fluid media (medium), does not increase extra store keeping.
（4）Scale removal process is only applicable the rubbing action of fluid and core, does not produce pollutant, and the sand grains cleaned out is recyclable
Recycle, it is green.
（5）The cleaning removal that this programme solves the casting whole core internal process cavity excess stock of 3D printing complexity core is asked
Topic, enables the maximum performance of advantage of 3D printing increasing material manufacturing.
Claims (10)
1. a kind of method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing, the core is the 3D printing sand of monoblock type
Core, core is interior to be provided with some cavities, stacks not glued loose sand in cavity, its feature is being, each surface of the core
Some clearance holes connected with internal cavity are opened up, when removing the loose sand of core inner chamber, carry out preliminary shake-out first：It is logical
The loose sand of inner chamber is vibrated the preliminary sand removal of discharge progress by the mode for crossing vibration from each clearance hole respectively；Then it is clear to carry out fluid scouring
Sand：Fluid is injected with certain flow rate to core inner chamber, and constantly changes influent stream and goes out to flow direction to change fluid in cavity
Flow direction, enables flow across and washes away the bore passages of core, impacts cavity inwall soft by the release effect of washing away of fluid
Transition layer of sand, rush the sand material fallen and discharged with fluid.
2. the method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing according to claim 1, it is characterised in that
The position of the core inner-cavity structure mutation at least opens up a clearance hole being connected with nearest surface, and the structural mutation refers to sand
There is the position of mutation at the position or core cavity contour curvature that latus rectum size is mutated in core cavity road.
3. the method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing according to claim 1, it is characterised in that
The clearance hole is the straight hole that is connected with neighbouring internal passage, a diameter of 4-50mm of clearance hole.
4. the method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing according to claim 1, it is characterised in that
Preliminary shake-out process specifically comprises the following steps：The first step, 3D printing core is fixed on a vibration table, makes have clearance hole
One of core surface it is downward, and make clearance hole keep sediment outflow it is unimpeded；Second step, shake table is applied to become and hands over vibration certain
Time, the loose sand in cavity for making to connect with downward clearance hole are progressively discharged；3rd step, upset core make it is other have clearance hole or
Have that the core surface of opening is downward, repeat the first step and the sediment outflow process of second step；Continue to overturn core and repeat the first step and the
The sediment outflow process of two steps, until being arranged after placing and vibrate under all equal warp-wises in the surface for having clearance hole and having opening without loose sand
Untill going out.
5. the method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing according to claim 4, it is characterised in that
When core vibrates with the platform that shakes, negative-pressure ward pipeline is provided with outside downward clearance hole and is used to aid in sediment outflow.
6. the method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing according to claim 1, it is characterised in that
During preliminary shake-out, the vibration of core is that frequency is 1-31Hz, and amplitude should be less than 1mm oscillation exchange.
7. the method for cleaning of the unnecessary sand material of Integral sand in-core chamber of the 3D printing according to claim any one of 1-6, its
Be characterised by, during fluid scouring sand removal, set in the surface opening that the bore passages with core are connected it is at least one enter
Head piece and at least one outflow port, flow inlet are connected with influent stream for flow tube road, and outflow port is connected with outflow conduit, while blocks it
It is open, and injects wash fluid with certain flow to flow inlet, the bore passages between flow inlet and outflow port are flowed
Body washes away, and to wash away the transition layer of sand on cavity surface, after washing away 3-5 minutes, switches outflow port, to change fluid flow direction, or together
When switch flow inlet and outflow port, continue to wash away 3-5 minutes, change fluid flow direction again, until in each passage of core inner chamber
For wall after fluid scouring sand removal, that completes inner chamber transition layer of sand washes away cleaning.
8. the method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing according to claim 7, it is characterised in that
During the flow inlet selection, the larger cast gate of bore, rising head, exhaust outlet or clearance hole are preferentially selected as flow inlet.
9. the method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing according to claim 7, it is characterised in that
The granule medium of volume of fluid 10-15% is mixed with the fluid, the particle diameter of the granule medium is 2-4mm.
10. the method for cleaning of the unnecessary sand material of Integral sand in-core chamber of 3D printing according to claim 7, its feature exist
In the fluid is compressed air stream or the immiscible and nonreactive liquid of sand material and binding agent with core.
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| CN201710640961.2A CN107520409B (en) | 2017-07-31 | 2017-07-31 | A kind of method for cleaning of the extra sand material of Integral sand in-core chamber of 3D printing |
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| CN201710640961.2A CN107520409B (en) | 2017-07-31 | 2017-07-31 | A kind of method for cleaning of the extra sand material of Integral sand in-core chamber of 3D printing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108262447A (en) * | 2018-03-14 | 2018-07-10 | 共享智能铸造产业创新中心有限公司 | Sand integrates cleaning equipment more than a kind of whole core of 3D printing |
| CN108772780A (en) * | 2018-06-08 | 2018-11-09 | 太原理工大学 | A kind of horizontal exciting polishing and grinding apparatus and method of light alloy casting complex-shaped surface mould |
| CN108817326A (en) * | 2018-06-27 | 2018-11-16 | 共享智能铸造产业创新中心有限公司 | A kind of cleaning plant and its working method for 3D printing sand core |
| CN114025917A (en) * | 2019-06-13 | 2022-02-08 | 沃克斯艾捷特股份有限公司 | Method and apparatus for producing 3D molded articles by a layering technique using a core cleaning station |
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| CN108772780A (en) * | 2018-06-08 | 2018-11-09 | 太原理工大学 | A kind of horizontal exciting polishing and grinding apparatus and method of light alloy casting complex-shaped surface mould |
| CN108817326A (en) * | 2018-06-27 | 2018-11-16 | 共享智能铸造产业创新中心有限公司 | A kind of cleaning plant and its working method for 3D printing sand core |
| CN114025917A (en) * | 2019-06-13 | 2022-02-08 | 沃克斯艾捷特股份有限公司 | Method and apparatus for producing 3D molded articles by a layering technique using a core cleaning station |
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