CN108500261A - A kind of high vacuum multi-function metal 3D printing equipment - Google Patents

A kind of high vacuum multi-function metal 3D printing equipment Download PDF

Info

Publication number
CN108500261A
CN108500261A CN201710110216.7A CN201710110216A CN108500261A CN 108500261 A CN108500261 A CN 108500261A CN 201710110216 A CN201710110216 A CN 201710110216A CN 108500261 A CN108500261 A CN 108500261A
Authority
CN
China
Prior art keywords
powder
vacuum chamber
printing
vacuum
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710110216.7A
Other languages
Chinese (zh)
Other versions
CN108500261B (en
Inventor
李宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huazhong University of Science and Technology
Original Assignee
Kunshan Hong Tian Kai Electronic Material Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunshan Hong Tian Kai Electronic Material Co Ltd filed Critical Kunshan Hong Tian Kai Electronic Material Co Ltd
Priority to CN201710110216.7A priority Critical patent/CN108500261B/en
Publication of CN108500261A publication Critical patent/CN108500261A/en
Application granted granted Critical
Publication of CN108500261B publication Critical patent/CN108500261B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00Additive manufacturing of workpieces or articles from metallic powder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20Direct sintering or melting
    • B22F10/28Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30Process control
    • B22F10/32Process control of the atmosphere, e.g. composition or pressure in a building chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/20Cooling means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/40Radiation means
    • B22F12/49Scanners
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/50Means for feeding of material, e.g. heads
    • B22F12/52Hoppers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/60Planarisation devices; Compression devices
    • B22F12/63Rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE 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
    • B33Y30/00Apparatus for additive manufacturing; Details thereof or accessories therefor
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C24/00Coating starting from inorganic powder
    • C23C24/08Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20Direct sintering or melting
    • B22F10/25Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The invention discloses a kind of high vacuum multi-function metal 3D printing equipment, including vacuum chamber, galvanometer at the top of the vacuum chamber, the laser being connected with the galvanometer, the vacuum chamber is internally provided with powder-laying roller, the bottom of the vacuum chamber is equipped with workbench, and the bottom of the workbench is equipped with working cylinder and hoistable platform;Sealing unit is set between the workbench and the hoistable platform, for realizing the sealing of the working cylinder and hoistable platform;Powder falling unit, including powder falling bucket and powder bucket;The cooling integrated unit of heating, is set on affiliated workbench, for the metal powder or 3D printing part to be heated or cooled.The equipment of the present invention is, it can be achieved that 10‑3Pa and higher vacuum degree realize that selective laser melting, laser near-net-shape or laser melting coating repair multifunctional unit, and heating-refrigerating function of substrate is integrated, it can be achieved that powder preheating and drip molding rapid cooling, largely reduce production cost.

Description

A kind of high vacuum multi-function metal 3D printing equipment
Technical field
The invention belongs to metal 3D printer manufacturing fields, and in particular to a kind of high vacuum multi-function metal 3D printing is set It is standby.
Background technology
High energy beam 3D printing (also known as increasing material manufacturing) is one kind of rapid shaping technique.The technology is with digital model file Basis is superimposed with adhesive materials such as powdery metal or plastics by continuous physical layer, and complicated Three-dimension process is turned Become simple two dimension processing, greatly reduces the forming difficulty of complex parts, it can not to be expected to solution conventional machining techniques The figuration manufacture problem of the complex structural member of completion.In recent years, 3D printing technique is gradually applied to the manufacture of actual product, In, the 3D printing technique development of metal material is especially rapid.In national defence, European and American developed countries pay much attention to 3D printing technique Development, do not stint input huge fund studied, and 3D printing metal component be always study and application emphasis.With laser High output and control, the development of adjustment technology, new 3D printing machine occur in succession.According to statistics, metal 3D printer Equipment and material in the world up to 300,000,000 dollars.Although compared with advanced resin printer, only 1/10 or so, It is expected that the year two thousand twenty is up to 1,200,000,000~2,100,000,000 dollars.Metal 3D printer has shown very wide application prospect, in automobile The fields such as manufacture, mold, aerospace, weaponry, medical treatment, ship, the energy have powerful growth momentum.
Although metal receives expectation with 3D printer, and shows explosive growth situation, there are still more technologies Sex chromosome mosaicism.
(1) commercial equipment is when carrying out the laser 3D printing of metal powder, it usually needs is continually fed into inert protective gas To prevent metal powder from being aoxidized under laser action, but manufacturing cost can be undoubtedly significantly increased in consumption to inert gas for a long time.It is low true Reciprocal of duty cycle, rich oxygen content are easily formed oxide when to the material 3D printing of oxidisability sensitive metal, to reduce 3D printing part Mechanical property.
(2) functions of the equipments are single, and a such as 3D printing equipment can only often realize selective laser melting (SLM), laser Near-net-shape (LENS) or laser melting coating reparation share laser, galvanometer, a machinery if can be integrated by above-mentioned function The resources such as device then can largely reduce production cost.
(3) substrate heating helps to reduce temperature gradient and thermal stress, avoids drip molding deformation and cracking;Substrate cools down then Help to adjust drip molding heterogeneous microstructure.But current equipment mostly uses greatly substrate heating and is preheated to powder, no cooling Function, and substrate/stage is adiabatic using thermal insulation board.If can be integrated by substrate heating-refrigerating function, will be promoted 3D printing functions of the equipments adapt to the 3D printing of wider metal material.
Invention content
For the disadvantages described above or Improvement requirement of the prior art, a kind of high vacuum of present invention offer, multi-functional metal 3D Printing device.The equipment can meet the condition of high vacuum degree requirement of printing chamber, avoid the lasting consumption of inert gas;Collection selectivity Laser fusion (SLM), laser near-net-shape (LENS) and laser melting coating repair function are in one, and by heating-cooling of substrate Function is integrated.
To achieve the above object, the present invention provides a kind of high vacuum multi-function metal 3D printing equipment, is used for geometry The increasing material manufacturing of complicated metal parts and device comprising vacuum chamber, the galvanometer being located at the top of the vacuum chamber, with institute The connected laser of galvanometer is stated, the vacuum chamber is internally provided with powder-laying roller, and the bottom of the vacuum chamber is equipped with workbench, The bottom of the workbench is equipped with working cylinder and hoistable platform, which further includes:
Sealing unit is set between the workbench and the hoistable platform, including connecting rod and sealing threaded pipe, institute Connecting rod is stated for connecting the workbench and hoistable platform, it is made to make elevating movement, the sealing spiral shell in the working cylinder Line pipe is connect with working cylinder and hoistable platform, for realizing the sealing of the working cylinder and hoistable platform;
Powder falling unit, including powder falling bucket and powder bucket, the powder falling bucket be set to the workbench above, by tube cell with it is described Powder bucket connects, and for persistently providing metal powder, the powder bucket is set to the outside of the vacuum chamber, for reducing vacuum chamber Size improves vacuum degree and shortens the pumpdown time;
The cooling integrated unit of heating, is set on affiliated workbench, for carrying out heating or cold to the metal powder But, to promote the function of 3D printing equipment, the 3D printing of wider metal material is adapted to.
Further, which further includes vacuum treatment unit comprising vacuum valve, mechanical pump and molecular pump, it is described Vacuum valve is set on the vacuum chamber side wall, and the mechanical pump and molecular pump are connect with the vacuum valve successively, are used for Vacuumize process is carried out to the vacuum chamber.
Further, groove depth groove width is adjustable on the wheel hub of the powder falling bucket, and hub rotation speed is adjustable, to control powder falling Amount meets the laser 3D printing forming of different size parts.
Further, it is equipped with cover board on the upside of the powder falling bucket, metal powder is avoided to overflow.
Further, the vacuum chamber is two, and one of vacuum chamber is for being arranged selective laser melting list Member, another vacuum chamber is for being arranged laser near-net-shape and laser melting coating unit.
Preferably, the tube cell is equipped with two or more sealing valves, in the selective laser melting unit or When laser near-net-shape and laser melting coating cell operation, the supply of the metal powder is controlled.
Preferably, the number of the quantity and the vacuum chamber of the sealing unit, powder falling unit, the cooling integrated unit of heating Measure it is equal, to realize multi-functional 3D printing.
Further, the cooling integrated unit of the heating includes upper substrate and lower substrate, and perforation, institute are offered in lower substrate Perforation is stated for accommodating Elema or other electric heating bodies.
Further, the upper substrate is equipped with runner, for being passed through water or other cooling liquid to the 3D printing material Or drip molding is cooled down.
Further, the lower substrate is equipped with lower flow channel, for be passed through water or other cooling liquid to the connecting rod and Hoistable platform is cooled down.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show Beneficial effect:
(1) in technical scheme of the present invention, cancel powder cylinder, working cylinder uses sylphon seal with lifting platform surface, larger Degree diminution shapes chamber volume.And it is combined with molecular pump, it can be achieved that 10 using mechanical pump-3Pa and higher vacuum degree.
(2) in technical scheme of the present invention, the vacuum degree of chamber is shaped up to 10-3Pa or more, condition of high vacuum degree, hypoxemia contain Amount, avoids under laser action, and metal material is reacted with oxide to be generated brittle oxide and drip molding performance is caused to decline.
(3) in technical scheme of the present invention, by selective laser melting (SLM), laser near-net-shape (LENS) or laser Cladding reparation is integrated, shares the resources such as laser, galvanometer, a mechanical device, then can largely reduce production cost.
(4) in technical scheme of the present invention, by heating-refrigerating function of substrate it is integrated, it can be achieved that powder preheating and The regulation and control of part tune shape are effectively formed in drip molding rapid cooling.In addition, cooling duct is arranged in a substrate, will can effectively heat the substrate It is thermally shielded between working cylinder, hoistable platform.
Description of the drawings
Fig. 1 is that a kind of working cylinder that high vacuum multi-function metal 3D printing equipment is related to of the embodiment of the present invention and lifting fill Set sealing schematic diagram;
Fig. 2 is a kind of selective laser melting that high vacuum multi-function metal 3D printing equipment is related to of the embodiment of the present invention (SLM), laser near-net-shape (LENS) and laser melting coating one layout drawing;
Fig. 3 is a kind of powder falling bucket wheel hub section that high vacuum multi-function metal 3D printing equipment is related to of the embodiment of the present invention Figure;
Fig. 4 is that a kind of integrated substrate of high vacuum multi-function metal 3D printing equipment heating-cooling of the embodiment of the present invention is set Meter figure.
In all attached drawings, the same reference numeral indicates identical structure and part, wherein:1-SLM formings vacuum chamber, 2- heating, cooling integrated substrate, 3- workbench, 4- working cylinders, 5- connecting rods, 6- sealing threaded pipes, 7- hoistable platforms, 8- lifting Leading screw, 9- galvanometers, 10- powder-laying rollers, 11- powder fallings bucket, 12- vacuum valves, 13- tube cells, the sealing valve on 14- tube cells 13,15- powder Metal powder, the 22- that bucket, the sealing valve on 16-- tube cells 17,18- nozzles, 19- vacuum valves, 20- laser, 21- nozzles spray Laser, 23-LENS and laser melting coating repair vacuum chamber, 24- vacuum pump systems, 25- upper substrates, 26- for cooling down sample Runner, 27- lower substrates, 28- are used to be inserted into the through-hole of calandria for the runner of heat-insulated connecting rod and lifting gear, 29-.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that Conflict is not constituted between this to can be combined with each other.
Laser 3D printing chamber is different from general chamber, and there are elevating mechanisms.The up and down motion of elevating mechanism so that its is close Envelope is more difficult.If entire elevating mechanism is placed in vacuum chamber, it is slow that it will cause pumping speed, and time-consuming, and vacuum degree is low, lazy Property gas usage is big, it is less economical the problems such as.Fig. 1 is a kind of high vacuum multi-function metal 3D printing equipment of the embodiment of the present invention The working cylinder being related to seals schematic diagram with lifting gear.As shown in Figure 1, hoistable platform 7 is avoided directly to be connected with workbench 3, Connecting rod 5 is designed between, and when the leading screw 8 of elevating mechanism is moved with moving platform 7, connecting rod 5 lifts therewith, to band Dynamic workbench 3 moves together, realizes elevating function.Motion platform 7 and working cylinder 4 are sealed using bellows 6, bellows 6 The flexible up and down motion that can meet elevating mechanism, and its leakproofness is not influenced, to realize the sealing of 3D printing chamber.
In a preferred embodiment of the invention, as shown in Fig. 2, being combined using mechanical pump+molecular pump, 3D printing vacuum is realized The condition of high vacuum degree of chamber.In order to meet this requirement and improve efficiency, the present invention cancels powder cylinder, using powder falling bucket and external powder bucket In conjunction with mode, realize continue powder supply.On the one hand elevating mechanism cost is saved in the cancellation of powder cylinder, reduce metal powder pollution;Separately On the one hand vacuum chamber size is reduced, conducive to improving vacuum degree and shortening the operating time.
Fig. 3 is a kind of powder falling bucket wheel hub section that high vacuum multi-function metal 3D printing equipment is related to of the embodiment of the present invention Figure.As shown in figure 3, in a preferred embodiment of the invention, the wheel hub of powder falling bucket is designed using gear type, groove depth groove width on wheel hub Adjustable, hub rotation speed is adjustable, controls powder falling amount accordingly.Powder falling bucket width direction size adjustable meets swashing for different size parts Light 3D printing shapes.
In a preferred embodiment of the invention, it is equipped with cover board on the upside of powder falling bucket, metal powder is avoided to overflow.
As shown in Figure 1, in a preferred embodiment of the invention, 5 monometallic bars of shown connecting rod, bimetallic lever or mostly golden Belong to bar.
Fig. 2 is a kind of selective laser melting that high vacuum multi-function metal 3D printing equipment is related to of the embodiment of the present invention (SLM), laser near-net-shape (LENS) and laser melting coating one layout drawing.As shown in Fig. 2, the present invention is by selective laser melting (SLM), laser near-net-shape (LENS) carries out integrated design with laser melting coating.
As shown in Fig. 2, in a preferred embodiment of the invention, according to selective laser melting (SLM), laser near-net-shape (LENS) with the processing characteristic of laser melting coating, selective laser melting (SLM) function is placed on a vacuum chamber 1, will be swashed Light near-net-shape (LENS) is placed on adjoining vacuum chambers 23 with laser melting coating function.
When carrying out selective laser melting (SLM) progress part forming:
(1) sealing valve 16 on powder conduit that external powder bucket 15 is connected with chamber 23 first is closed;By vacuum pump set The sealing valve of 24 (mechanical pumps+molecular pump) and chamber 23 is closed.
(2) substrate 2 is fixed on workbench 3.
(3) metal powder for meeting requirement is placed in powder bucket 15, it is ensured that powder accessible can be delivered to powder falling bucket 11。
(4) it is vacuumized after closing vacuum chamber 1.
(5) wait for the vacuum degree of vacuum chamber 1 up to 5 × 10-3Gas washing when Pa, after gas washing when the vacuum degree of vacuum chamber 1 again Up to 5 × 10-3When Pa, it is passed through circulated inert gas.
(6) powder falling in working region of powder falling bucket 11, the powdering therewith of powder-laying roller 10.
(7) laser 22 is opened, SLM formings are carried out to powder using galvanometer system 9, by adjusting turning for powder falling bucket wheel hub Speed controls the angle of rotation (angles θ in such as Fig. 3) of tooth socket, controls powder falling amount.
When carrying out laser near-net-shape (LENS) or laser melting coating is repaired:
(1) sealing valve 14 on powder conduit that external powder bucket 15 is connected with chamber 1 is closed;By 24 (machine of vacuum pump set Tool pump+molecular pump) it is closed with the sealing valve of chamber 1.
(2) fixed substrate or part on workbench 2.
(3) metal powder for meeting requirement is placed in powder bucket 15, it is ensured that powder accessible can be delivered to nozzle 18.
(4) it is vacuumized after closing vacuum chamber 23.
(5) wait for the vacuum degree of vacuum chamber 23 up to 5 × 10-3Gas washing when Pa, when vacuum degree is again up to 5 × 10 after gas washing-3Pa When, it is passed through circulated inert gas.
(6) laser 22 is opened, using nozzle 18 to carrying out laser near-net-shape (LENS) or laser melting coating reparation.
As shown in Fig. 2, in a preferred embodiment of the invention, powder bucket connect powder conduit with each chamber and is equipped with valve Door, you can adjust powder flow, can also seal, vacuum chamber and external powder bucket are separated.
When carrying out selective laser melting (SLM) progress part forming, big temperature gradient often causes big heat Stress/residual stress is cracked or is deformed so as to cause workpiece.It needs to heat the substrate at this time, reduces temperature gradient, to Reduce thermal stress/residual stress, workpiece is avoided to deform or crack.To certain materials, such as amorphous alloy, then need to carry out quick Cooling is to obtain certain heterogeneous microstructure of higher amorphous content or material.Fig. 4 is one kind of the embodiment of the present invention High vacuum multi-function metal 3D printing equipment heating-cooling integrates substrate design figure.As shown in figure 4, adding for the present invention is hot-cold Integrated substrate can realize above-mentioned function well, promote 3D printing functions of the equipments, meet the 3D of wider metal material Printing.
As shown in figure 4, substrate is made of upper substrate 27 and lower substrate 25, the processing perforation 29 on lower substrate 27, by silicon-carbon Stick or other electric heating bodies, which are inserted into hole 29, can carry out substrate heating.The upper substrate be equipped with upper runner, for be passed through water or Other cooling liquid cool down the 3D printing material or drip molding;The lower substrate is equipped with lower flow channel, for being passed through water Or other cooling liquid cool down the connecting rod and hoistable platform.During heating, in order to avoid substrate temperature pair Elevating mechanism impacts, to being passed through the cooling water of certain flow close to the runner 28 of operating position.After heating, close Heating power supply leads to cooling water to runner 26, cools down to the upper machine plate 25 close to part position rapidly.
In a preferred embodiment of the invention, for the ease of processing, flow channel depth is respectively accounting for half, is closing substantially above and below It is exactly a whole runner to be sealed.
As shown in figure 4, in a preferred embodiment of the invention, the upper substrate, lower substrate can select stainless steel, copper/ The metal materials such as copper alloy, aluminium/aluminium alloy, titanium/titanium alloy, cast iron, steel.
As shown in figure 4, in a preferred embodiment of the invention, the upper runner, lower flow channel can with the degree of lip-rounding, back-shaped, field shape, Other geometries such as mesh shape, day shape design.
As shown in figure 4, in a preferred embodiment of the invention, in close hoistable platform or substrate close to powder cylinder side Position can design runner, be passed through cooling water, avoid influence of the high temperature to elevating mechanism or powder cylinder.
In technical scheme of the present invention, cancel powder cylinder, working cylinder uses sylphon seal with lifting platform surface, largely Reduce forming chamber volume.And it is combined with molecular pump, it can be achieved that 10 using mechanical pump-3Pa and higher vacuum degree, metal material It is reacted with oxide and generates brittle oxide and drip molding performance is caused to decline.Meanwhile the present invention is by selective laser melting (SLM), laser near-net-shape (LENS) or laser melting coating are repaired integrated, share laser, galvanometer, a mechanical device etc. Resource then can largely reduce production cost, in addition, the present invention is integrated by heating-refrigerating function of substrate, it can be real Existing powder preheating and drip molding rapid cooling, are effectively formed the regulation and control of part tune shape.In addition, cooling duct is arranged in a substrate, can have Effect will be heated the substrate to be thermally shielded between working cylinder, hoistable platform.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include Within protection scope of the present invention.

Claims (10)

1. a kind of high vacuum multi-function metal 3D printing equipment, the increasing material system for geometry complexity metal parts and device It makes comprising vacuum chamber, the galvanometer being located at the top of the vacuum chamber, the laser being connected with the galvanometer, the vacuum Chamber is internally provided with powder-laying roller, and the bottom of the vacuum chamber is equipped with workbench, and the bottom of the workbench is equipped with working cylinder And hoistable platform, which is characterized in that the equipment further includes:
Sealing unit is set between the workbench and the hoistable platform, including connecting rod and sealing threaded pipe, the company Extension bar makes it make elevating movement, the sealing threaded pipe in the working cylinder for connecting the workbench and hoistable platform It is connect with working cylinder and hoistable platform, for realizing the sealing of the working cylinder and hoistable platform;
Powder falling unit, including powder falling bucket and powder bucket, the powder falling bucket are set to above the workbench, pass through tube cell and the powder bucket Connection, for persistently providing metal powder, the powder bucket is set to the outside of the vacuum chamber, for reducing vacuum chamber ruler It is very little, it improves vacuum degree and shortens the pumpdown time;
The cooling integrated unit of heating, is set on affiliated workbench, for adding to the metal powder or 3D printing part Heat is cooling, to promote the function of 3D printing equipment, adapts to the 3D printing of wider metal material.
2. a kind of high vacuum multi-function metal 3D printing equipment according to claim 1, which is characterized in that the equipment is also wrapped Include vacuum treatment unit comprising vacuum valve, mechanical pump and molecular pump, the vacuum valve are set to the vacuum chamber side wall On, the mechanical pump and molecular pump are connect with the vacuum valve successively, for carrying out vacuumize process to the vacuum chamber.
3. a kind of high vacuum multi-function metal 3D printing equipment according to claim 1, which is characterized in that the powder falling bucket Wheel hub on groove depth groove width it is adjustable, hub rotation speed is adjustable, to control powder falling amount, meets the laser 3D of different size parts Printing-forming.
4. a kind of high vacuum multi-function metal 3D printing equipment according to claim 3, which is characterized in that the powder falling bucket Upside is equipped with cover board, and metal powder is avoided to overflow.
5. a kind of high vacuum multi-function metal 3D printing equipment according to claim 1, which is characterized in that the vacuum chamber Room is two, and for one of vacuum chamber for selective laser melting unit to be arranged, another vacuum chamber is sharp for being arranged Light near-net-shape and laser melting coating unit.
6. a kind of high vacuum multi-function metal 3D printing equipment according to claim 1 or 5, which is characterized in that the powder Pipe is equipped with two or more sealing valves, in the selective laser melting unit or laser near-net-shape and laser melting coating When cell operation, the supply of the metal powder and the sealing of vacuum chamber are controlled.
7. a kind of high vacuum multi-function metal 3D printing equipment according to after claim 1,56, which is characterized in that described Sealing unit, powder falling unit, the quantity of the cooling integrated unit of heating are equal with the quantity of the vacuum chamber, to realize more work( It can 3D printing.
8. a kind of high vacuum multi-function metal 3D printing equipment according to claim 1 or 6, which is characterized in that described to add The cooling integrated unit of heat includes upper substrate and lower substrate, offers perforation in lower substrate, it is described perforate for accommodate Elema or Other electric heating bodies.
9. a kind of high vacuum multi-function metal 3D printing equipment according to claim 8, which is characterized in that the upper substrate Equipped with upper runner, the 3D printing material or drip molding are cooled down for being passed through water or other cooling liquid.
10. a kind of high vacuum multi-function metal 3D printing equipment according to claim 8, which is characterized in that the lower base Plate is equipped with lower flow channel, is cooled down to the connecting rod and hoistable platform for being passed through water or other cooling liquid.
CN201710110216.7A 2017-02-27 2017-02-27 A kind of high vacuum multi-function metal 3D printing equipment Active CN108500261B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710110216.7A CN108500261B (en) 2017-02-27 2017-02-27 A kind of high vacuum multi-function metal 3D printing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710110216.7A CN108500261B (en) 2017-02-27 2017-02-27 A kind of high vacuum multi-function metal 3D printing equipment

Publications (2)

Publication Number Publication Date
CN108500261A true CN108500261A (en) 2018-09-07
CN108500261B CN108500261B (en) 2019-10-22

Family

ID=63374211

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710110216.7A Active CN108500261B (en) 2017-02-27 2017-02-27 A kind of high vacuum multi-function metal 3D printing equipment

Country Status (1)

Country Link
CN (1) CN108500261B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111893480A (en) * 2019-05-05 2020-11-06 中国科学院半导体研究所 Tool bottom plate for laser cladding of thin plate, tool device and cladding method
CN112475321A (en) * 2020-09-28 2021-03-12 西安增材制造国家研究院有限公司 Large EBSM equipment based on auxiliary preheating system
WO2021090043A1 (en) * 2019-11-04 2021-05-14 Ecole Polytechnique Federale De Lausanne (Epfl) Laser treatment systems and methods for in-situ laser shock peening (lsp) treatment of parts during production thereof by a selective laser sintering or melting (sls/slm) process, and additive manufacturing systems and methods implementing the same
CN115255400A (en) * 2022-07-29 2022-11-01 深圳市华阳新材料科技有限公司 Amorphous alloy 3D printing base station device and 3D printing method
CN117282988A (en) * 2023-11-23 2023-12-26 江苏永年激光成形技术有限公司 Metal 3D printing equipment cylinder that takes shape

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034468A1 (en) * 1994-06-14 1995-12-21 Soligen, Inc. Powder handling apparatus for additive fabrication equipment
CN203764976U (en) * 2013-09-18 2014-08-13 江苏永年激光成形技术有限公司 Laser forming manufacture integration platform equipment
CN105269147A (en) * 2015-10-15 2016-01-27 哈尔滨工业大学 Three-dimensional vacuum laser machining device and method for carrying out laser machining through device
CN105290401A (en) * 2015-11-05 2016-02-03 合肥中加激光技术有限公司 Metal three-dimensional printing vacuum molding cavity structure
CN105414545A (en) * 2016-01-08 2016-03-23 江苏永年激光成形技术有限公司 Slm round working cylinder
CN105728942A (en) * 2016-04-22 2016-07-06 哈尔滨工业大学 Vacuum laser wire filling processing device and vacuum laser wire filling method
WO2016182790A1 (en) * 2015-05-11 2016-11-17 Wisconsin Alumni Research Foundation Three-dimension printer with mechanically scanned cathode-comb

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034468A1 (en) * 1994-06-14 1995-12-21 Soligen, Inc. Powder handling apparatus for additive fabrication equipment
CN203764976U (en) * 2013-09-18 2014-08-13 江苏永年激光成形技术有限公司 Laser forming manufacture integration platform equipment
WO2016182790A1 (en) * 2015-05-11 2016-11-17 Wisconsin Alumni Research Foundation Three-dimension printer with mechanically scanned cathode-comb
CN105269147A (en) * 2015-10-15 2016-01-27 哈尔滨工业大学 Three-dimensional vacuum laser machining device and method for carrying out laser machining through device
CN105290401A (en) * 2015-11-05 2016-02-03 合肥中加激光技术有限公司 Metal three-dimensional printing vacuum molding cavity structure
CN105414545A (en) * 2016-01-08 2016-03-23 江苏永年激光成形技术有限公司 Slm round working cylinder
CN105728942A (en) * 2016-04-22 2016-07-06 哈尔滨工业大学 Vacuum laser wire filling processing device and vacuum laser wire filling method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111893480A (en) * 2019-05-05 2020-11-06 中国科学院半导体研究所 Tool bottom plate for laser cladding of thin plate, tool device and cladding method
CN111893480B (en) * 2019-05-05 2022-07-26 中国科学院半导体研究所 Tool bottom plate for laser cladding of thin plate, tool device and cladding method
WO2021090043A1 (en) * 2019-11-04 2021-05-14 Ecole Polytechnique Federale De Lausanne (Epfl) Laser treatment systems and methods for in-situ laser shock peening (lsp) treatment of parts during production thereof by a selective laser sintering or melting (sls/slm) process, and additive manufacturing systems and methods implementing the same
CN112475321A (en) * 2020-09-28 2021-03-12 西安增材制造国家研究院有限公司 Large EBSM equipment based on auxiliary preheating system
CN115255400A (en) * 2022-07-29 2022-11-01 深圳市华阳新材料科技有限公司 Amorphous alloy 3D printing base station device and 3D printing method
CN117282988A (en) * 2023-11-23 2023-12-26 江苏永年激光成形技术有限公司 Metal 3D printing equipment cylinder that takes shape
CN117282988B (en) * 2023-11-23 2024-02-09 江苏永年激光成形技术有限公司 Metal 3D printing equipment cylinder that takes shape

Also Published As

Publication number Publication date
CN108500261B (en) 2019-10-22

Similar Documents

Publication Publication Date Title
CN108500261B (en) A kind of high vacuum multi-function metal 3D printing equipment
Wang et al. An approach to predict the residual stress and distortion during the selective laser melting of AlSi10Mg parts
CN104630706B (en) A kind of many primitive alloy nitride films of high-performance optical thermal transition and preparation method thereof
CN105081321B (en) Cooling system for amorphous metal member formed in laser 3D printed manner and cooling method of cooling system
CN110142332A (en) A kind of forming of NiAl alloy epitaxy thin-wall pipe and control property integral method
CN108857031A (en) The autonomous induction heating increasing material manufacturing device and method of continuous wire feed
CN105598448B (en) A kind of control method of metal material laser 3D printing preheating temperature in situ
CN103861912A (en) Aluminum alloy pipe bend forming method
CN109732089A (en) A kind of pure tungsten 3D printing increasing material manufacturing method
WO2020078055A1 (en) Metal additive manufacturing method and device employing continuous powder supply and induction heating
CN105568098B (en) The preparation method of heat-resistance high-strength magnesium alloy materials
CN108723161A (en) A kind of large aluminum alloy complex structural member cold-hot sequence coupling forming technology
CN111250853B (en) Synchronous cooling device and method based on electron beam fuse additive manufacturing
CN108145006A (en) A kind of titanium alloy box-shaped part Hot drawing method
CN205341922U (en) Quick shaping polar coordinates 3D printing apparatus of metal melting
TW202023974A (en) Multi-mold hot-bending forming apparatus
CN106239880A (en) Superplastic forming and the device of hot forming combination process is realized under vacuum environment
CN108188245A (en) A kind of manufacturing process of airplane intake lip superplastic forming die
CN107855395A (en) A kind of titanium alloy box-shaped part Hot drawing device
CN103521738B (en) The quick aluminising device and method of silicon carbide IGBT substrate framework vacuum hydraulic pressure
CN106735191B (en) A method of preparing Powder High-speed Steels
CN106256473B (en) A kind of Laser Rapid Prototyping System and method for aluminium wire
CN207447308U (en) A kind of heat-insulated die casting
CN108483878B (en) 3D cover plate glass hot bending machine and processing method thereof
CN109300797A (en) A kind of depth chamber leadless chip eutectic welder and method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20181225

Address after: 430074 A11-633, 1st floor, Guanggu Pioneer Street, Donghu New Technology Development Zone, Wuhan City, Hubei Province

Applicant after: Wuhan Chuanyuan Photoelectric Co., Ltd.

Address before: 215300 No. 2 Workshop at the Crossing of Hengjing Road and Zijin Road, Zhangpu Town, Kunshan City, Jiangsu Province

Applicant before: Kunshan Hong Tian Kai electronic material Co., Ltd.

GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20211228

Address after: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 1037

Patentee after: HUAZHONG University OF SCIENCE AND TECHNOLOGY

Address before: 430074 A11-633, 1st floor, Guanggu Pioneer Street, Donghu New Technology Development Zone, Wuhan City, Hubei Province

Patentee before: Wuhan Chuanyuan Photoelectric Co.,Ltd.