CN205254109U - Pure atmosphere selectivity of protection laser melting system of superelevation - Google Patents
Pure atmosphere selectivity of protection laser melting system of superelevation Download PDFInfo
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- CN205254109U CN205254109U CN201521053513.5U CN201521053513U CN205254109U CN 205254109 U CN205254109 U CN 205254109U CN 201521053513 U CN201521053513 U CN 201521053513U CN 205254109 U CN205254109 U CN 205254109U
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Abstract
The utility model discloses a pure atmosphere selectivity of protection laser melting system of superelevation, a serial communication port, include: selectivity laser melting device body, multistage dust collection device, purifier, wind circulating device, argon gas source and central control unit, wherein, selectivity laser melting device body is placed in a sealed enclosure, and this sealed enclosure and multistage dust collection device soft breeze circulating device form the closed loop, and the argon gas is at this closed loop inner loop. The utility model has the beneficial effects of: atmosphere water content in the system reaches <= and 1PPM index, oxygen content reach <= the 1PPM index, reaches the pure atmosphere environment of superelevation, and the product of processing can directly use.
Description
Technical field
The utility model relates to a kind of selective laser melting system, is specifically related to a kind of ultra-pureThe selective laser melting system of atmosphere protection, belongs to 3D printing technique field.
Background technology
Selective laser melting (SelectiveLaserMelting, SLM) technology is to make metalworkA kind of method of straight forming is the latest development of rapid shaping technique.
The basic thought of selective laser melting technology based on rapid shaping, i.e. successively cladding" increment " manufacture, has geometry in particular according to three-dimensional CAD model straight formingPart, in forming process, metal dust melts completely, produces metallurgical binding. Adopt traditional machineManufacturing process cannot produced shape and structure complexity metal parts, be laser fast shapingOne of main direction of technology application.
Selective laser melting technology has some following advantages:
(1) can directly make terminal metal product, need not any aftertreatment technology or simple tableFace processing, selects can directly process and can directly make by simple CAD moulding and materialWith part, greatly shortened product development cycle;
(2) can obtain having the reality of nonequilibrium state supersaturated solid solution and even tiny metallographic structureBody, density almost can reach 100%, and part machinery performance is suitable with Forging Technology gained;
(3) use the laser instrument with high power density, with the very little laser beam processing gold of hot spotBelong to, the metal parts that makes to process have very high dimensional accuracy (reaching 0.1mm) and(Ra30-50 μ m) for good surface roughness;
(4) because laser spot diameter is very little, therefore can be dystectic with lower power fusingMetal, making to carry out finished parts with the metal dust of single component becomes possibility, and can be for choosingWith metal dust kind also greatly expanded;
(5) workpiece of applicable various complicated shapes, being especially applicable to inside has complicated abnormal shape structure,As cavity, three-dimensional grid and the complex part that cannot manufacture by conventional method.
But find through long-term use, selective laser melting technology also exists certain shortcoming,For example:
(1) all selective laser melting equipment all adopts flowing gas protection, this present stageKind method is the oxygen content that easily increases shaping object at metals such as shaping titanium alloy, aluminium alloys,And in forming process, device moisture is around also very large, and for special metal, nitrogen containsMeasure also highly, finally the performance of parts is impacted;
(2) adopt flowing gas protection, not stopping to consume inert gas, increase considerably alwaysProduction cost;
(3) the selective laser melting equipment of present stage, its dedusting, purification, temperature can not joinClose control, the production effect in product later stage is caused to very large impact;
(4) the selective laser melting equipment of present stage, its water oxygen content is less demanding, general≤ 50PPM gets final product work, makes the product after processing also need to carry out simple sanding and polishing placeReason, can not disposablely obtain final products, and owing to adopting flowing gas protection, makes to addTerritory, work area can not well ensure the environment into≤50PPM, and atmosphere is unstable;
(5) the selective laser melting equipment of present stage can produce large in metal molten processFlue dust and the dust of amount, cause the destruction to processing atmosphere, affects the production effect of product.
Utility model content
For solving the deficiencies in the prior art, it is a kind of ultra-pure that the purpose of this utility model is to provideThe selective laser melting system of atmosphere protection, this system not only can provide ultra-pure atmosphere ringBorder, and can significantly reduce the consumption of inert gas, can also realize dedusting, clean simultaneouslyChange, temperature jointly control, and the production effect that improves the product later stage is had to positive effect.
In order to realize above-mentioned target, the utility model adopts following technical scheme:
A selective laser melting system for ultra-pure atmosphere protection, comprising: selective laserMelting appartus body (1), is characterized in that, also comprises: multistage dust collecting (2),Purifier (3), wind EGR (5), argon gas source (8) and CCU (9);
Aforementioned CCU (9) and multistage dust collecting (2), purifier (3),Wind EGR (5) is connected with argon gas source (8) signal, and their work is controlled;
Aforementioned selective laser melting device body (1) is positioned in an airtight casing, aforementioned closeClose on casing and be provided with: pressure sensor (11), oxygen level sensor (12) and water contentSensor (13), three kinds of sensors are all connected with aforementioned CCU (9) signal;
Aforementioned argon gas source (8) is to the closed box of placing selective laser melting device body (1)In body, directly pour argon gas;
Aforementioned airtight casing and multistage dust collecting (2) and wind EGR (5) formClosed loop, multistage dust collecting (2) is collected gas from the gas outlet of airtight casing, from manyLevel dust collecting (2) clean gas out directly enters in wind EGR (5),Or after purifying, purifier (3) enters again in wind EGR (5), from wind circulation dressPut (5) gas flow playback out and put the closed box of selective laser melting device body (1)In body.
The selective laser melting system of aforesaid ultra-pure atmosphere protection, is characterized in that, alsoComprise: effective filter (4), from purifier (3) gas out through aforementioned efficientFilter (4) enters into wind EGR (5) after filtering again.
The selective laser melting system of aforesaid ultra-pure atmosphere protection, is characterized in that, alsoComprise: cooling device (6), from wind EGR (5) gas out through aforementioned cooling dressPutting (6) brings the argon gas in argon gas source (8) in airtight casing into after cooling again.
The selective laser melting system of aforesaid ultra-pure atmosphere protection, is characterized in that, usesOn the airtight casing of placing aforementioned selective laser melting device body (1), be provided with twoAbove glove port (10), aforementioned glove port has gloves on (10).
The selective laser melting system of aforesaid ultra-pure atmosphere protection, is characterized in that, usesOn the airtight casing of placing aforementioned selective laser melting device body (1), be provided with vacuumTransfer chamber (7).
Usefulness of the present utility model is:
(1) receive for airtight casing and the multistage dust of placing selective laser melting device bodyAcquisition means and wind EGR form closed loop, and the argon gas in argon gas source circulates in this closed loop, makesReach≤1PPM of atmosphere water content index, reach≤1PPM of oxygen content index in the system of obtaining,Reach ultra-pure atmosphere, the product of processing can directly use;
(2) cooling device of setting up in closed loop, makes the atmosphere in system keep constant workMake temperature, the hydrone in casing is in existence and inert gas, and the temperature of inert gas moreHeight, hydrone is more active, and evaporation capacity is higher, and the temperature of inert gas is lower, and hydrone willCondense on the wall of casing, the intrasystem hydrone of inertia is just few, and water content is just low;
(3) glove port and vacuum transition cabin are set on airtight casing, glove port makes in processingWhen good product, can not destroy ultra-pure atmosphere, take out product from vacuum transition cabin, shortenProcess time, save gas cost;
(4), under the control of CCU, whole system has realized the full-automatic clean of atmosphereChange function, use very convenient.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of glove box;
Fig. 2 is the composition schematic diagram of selective laser melting system of the present utility model.
The implication of Reference numeral in figure: 1-selective laser melting device body, the multistage dust of 2-Gathering-device, 3-purifier, 4-effective filter, 5-wind EGR, the cooling dress of 6-Put, 7-vacuum transition cabin, 8-argon gas source, 9-CCU, 10-glove port, 11-pressureSensor, 12-oxygen level sensor, 13-water content sensor, 14-valve, 15-valve,16-valve, 17-valve, 18-air intake valve.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is done to concrete introduction.
The selective laser melting system of ultra-pure atmosphere protection of the present utility model, it has been used for referenceThe design principle of glove box, can realize the Full automatic purifying function of atmosphere, thereby superelevation is providedPure atmosphere.
One, the composition of glove box
In order to facilitate everybody to understand mentality of designing of the present utility model, the group of paper glove boxBecome.
With reference to Fig. 1, glove box comprises: main box, purifier (molecular sieve and copper catalyst)And EGR (blower fan).
Main box is closed box, forms closed-loop system with purifier and EGR. Main tankIn body, be inert gas, under the drive of EGR, purifier is to the inertia in main boxGas purifies, and makes reach≤1PPM of water content index, the oxygen of inert gas in main boxReach≤1PPM of content index.
In order to facilitate material turnover main box inside, main box is provided with transfer chamber and transmits material,Transfer chamber, by vacuumizing and mend the mode of the inner source of the gas of main box, makes inert gas in main boxReach≤1PPM of water content index, reach≤1PPM of oxygen content index.
For the experiment article in handled easily main box, on main box, be also provided with pluralGlove port, has gloves on glove port, become closed system with main box.
Two, the composition of the selective laser melting system of ultra-pure atmosphere protection of the present utility model
With reference to Fig. 2, the selective laser melting system of ultra-pure atmosphere protection of the present utility modelComprise: selective laser melting device body 1, multistage dust collecting 2, purifier3, effective filter 4, wind EGR 5, cooling device 6, argon gas source 8 and central authorities' controlDevice 9 processed.
1, selective laser melting device body
Selective laser melting device body 1 is positioned in an airtight casing, on this airtight casingBe provided with: 13, three kinds of pressure sensor 11, oxygen level sensor 12 and water content sensorsSensor is all connected with CCU 9 signals.
In order to facilitate printing and to take out the article after printing, place selective laser melting dressPut on the airtight casing of body 1 and be provided with more than two glove port 10, on glove port 10, cover hasGloves, gloves and airtight casing become closed system.
For the inside of the article turnover seal case after convenient printing, place selective laser moltenOn the seal case of gasifying device body 1, be also provided with vacuum transition cabin 7 to transmit material, vacuum mistakeCross cabin 7 by vacuumizing and mend the mode of airtight box house source of the gas, make inertia in airtight casingReach≤1PPM of the water content of gas index, reach≤1PPM of oxygen content index.
2, multistage dust collecting
Multistage dust collecting 2 is for elementary dedusting, and it is communicated with the gas outlet of airtight casing.
Multistage dust collecting 2 can be selected centrifugal screw-type dust arrester, concrete modelThere are CP1200, CP1600.
The filter effect of multistage dust collecting 2 can reach 100%, and the powder of collectingDirt (titanium alloy powder) can recycle.
3, purifier
Purifier 3 is for purifying from multistage dust collecting 2 effluent airs, and it is with manyThe outlet of level dust collecting 2 is communicated with.
The optional type of purifier 3 has molecular sieve and copper catalyst, concrete model have GP20G,GP20、GP200、GP2100、GP2200、GP2400、GP6400。
4, effective filter
Because purifier 3 self can produce fine solid particle, thus need to set up corresponding device-Effective filter 4 filters out fine solid particle, ensures to enter into placement selective laser meltingThe cleanliness factor of the gas of the seal case of device body 1.
Effective filter 4 is communicated with the outlet of purifier 3, from purifier 3 outGas enters into wind EGR 5 after effective filter 4 filters again.
Effective filter 4 adopts hundred grades of filters, can select blower fan filter unit, concreteModel have DWZQ-570, DWZQ-1170, DWZQ-1220.
5, wind EGR
Wind EGR 5 is for driving the gas flow of closed-loop system.
The blower fan that wind EGR 5 can select Siemens Company to produce, concrete model has2BH1300-7AH15、2BH1600-7AH16、2BH1600-7AH26。
6, cooling device
Cooling device 6 for cooling be about to return place selective laser melting device body 1Gas in seal case, makes the atmosphere in selective laser melting system keep constant workMake temperature, the hydrone in casing is in existence and inert gas, and the temperature of inert gas moreHeight, hydrone is more active, and evaporation capacity is higher, and the temperature of inert gas is lower, and hydrone willCondense on the wall of casing, the intrasystem hydrone of inertia is just few, and water content is just low.
Cooling device 6 is communicated with the outlet of wind EGR 5. From wind EGR 5 outGas returns after cooling device 6 is cooling again places the close of selective laser melting device body 1In joint sealing body.
7, argon gas source
Argon gas source 8 passes through air intake valve 18 to placing the close of selective laser melting device body 1Close and in casing, directly pour argon gas.
8, CCU
CCU 9 and multistage dust collecting 2, purifier 3, high efficiency filter dressPut 4, wind EGR 5, cooling device 6 be connected with argon gas source 8 signals, to their workWork is controlled.
For placing airtight casing and the multistage dust collection of selective laser melting device body 1Device 2, wind EGR 5 and cooling device 6 form closed loop, multistage dust collecting 2Collect gas from the gas outlet of airtight casing, from out clean of multistage dust collecting 2Gas directly enters in wind EGR 5, or purifies and through high efficiency filter through purifier 3After filtering, device 4 enters again in wind EGR 5, from wind EGR 5 gas warp outAfter cooling device 6 is cooling, flow back to the airtight casing of placing selective laser melting device body 1In.
Three, the work of the selective laser melting system of ultra-pure atmosphere protection of the present utility modelProcess
First by air intake valve 18, the gas in argon gas source 8 is filled with to selective laser melting dressPut in the airtight casing at body 1 place, under the regulation and control of CCU 9, make this airtightIn casing, the pressure of atmosphere reaches balance, then makes in airtight casing by wind EGR 5Gas pass through successively multistage dust collecting 2, purifier 3, effective filter 4,Wind EGR 5 and cooling device 6, finally get back in airtight casing; After repeatedly circulating,Oxygen content≤1PPM, water content sensor 13 in oxygen level sensor 12 records airtight casingWhile recording the interior water content≤1PPM of airtight casing, by CCU 9 by-pass valve control 14 HesValve 17 is closed, by-pass valve control 15 and valve 16 are opened, meanwhile, and by CCU9 regulate the flow velocity of wind EGR 5, the atmosphere in airtight casing are flowed uniformly, nowSelective laser melting device body 1 can be started working; Qualified products after printing pass through handRunning-on 10 is put in vacuum transition cabin 7, then vacuumizes by 3 times, mends selective laserAfter gas in melting appartus body 1, product is taken out.
As can be seen here, because the airtight casing of placing selective laser melting device body 1 is with manyLevel dust collecting 2 and wind EGR 5 have formed closed loop, and the argon gas in argon gas source 8 existsCirculation in this closed loop, so make reach≤1PPM of water content index, the oxygen content in systemReach≤1PPM index, reaches ultra-pure atmosphere, and the product that processing obtains can be directUse.
It should be noted that, above-described embodiment does not limit the utility model, all adopting in any formThe technical scheme obtaining by the mode that is equal to replacement or equivalent transformation, all drops on the utility modelProtection domain in.
Claims (5)
1. a selective laser melting system for ultra-pure atmosphere protection, comprising: selectively swashLight melting appartus body (1), is characterized in that, also comprises: multistage dust collecting (2),Purifier (3), wind EGR (5), argon gas source (8) and CCU (9);
Described CCU (9) and multistage dust collecting (2), purifier (3),Wind EGR (5) is connected with argon gas source (8) signal, and their work is controlled;
Described selective laser melting device body (1) is positioned in an airtight casing, described closeClose on casing and be provided with: pressure sensor (11), oxygen level sensor (12) and water contentSensor (13), three kinds of sensors are all connected with described CCU (9) signal;
Described argon gas source (8) is to the closed box of placing selective laser melting device body (1)In body, directly pour argon gas;
Described airtight casing and multistage dust collecting (2) and wind EGR (5) formClosed loop, multistage dust collecting (2) is collected gas from the gas outlet of airtight casing, from manyLevel dust collecting (2) clean gas out directly enters in wind EGR (5),Or after purifying, purifier (3) enters again in wind EGR (5), from wind circulation dressPut (5) gas flow playback out and put the closed box of selective laser melting device body (1)In body.
2. the selective laser melting of ultra-pure atmosphere protection according to claim 1 systemSystem, is characterized in that, also comprises: effective filter (4), goes out from purifier (3)The gas coming enters into wind EGR (5) after described effective filter (4) filters againIn.
3. the selective laser melting of ultra-pure atmosphere protection according to claim 1 systemSystem, is characterized in that, also comprises: cooling device (6), from wind EGR (5) outGas after described cooling device (6) is cooling, again the argon gas in argon gas source (8) is brought into closeClose in casing.
4. according to the selective laser of the ultra-pure atmosphere protection described in claim 1,2 or 3Melting systems, is characterized in that, for placing described selective laser melting device body (1)Airtight casing on be provided with more than two glove port (10), the upper cover of described glove port (10)There are gloves.
5. the selective laser melting of ultra-pure atmosphere protection according to claim 4 systemSystem, is characterized in that, for placing the close of described selective laser melting device body (1)Close and on casing, be provided with vacuum transition cabin (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521053513.5U CN205254109U (en) | 2015-12-16 | 2015-12-16 | Pure atmosphere selectivity of protection laser melting system of superelevation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521053513.5U CN205254109U (en) | 2015-12-16 | 2015-12-16 | Pure atmosphere selectivity of protection laser melting system of superelevation |
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| CN205254109U true CN205254109U (en) | 2016-05-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618751A (en) * | 2015-12-16 | 2016-06-01 | 伊特克斯惰性气体系统（北京）有限公司 | Selective laser melting system protected by ultra-pure atmosphere |
| CN107290190A (en) * | 2017-07-31 | 2017-10-24 | 赣州市恒源科技股份有限公司 | A kind of rare earth metal inertia sampler and sampling method |
| EP3292927A1 (en) * | 2016-09-13 | 2018-03-14 | Linde Aktiengesellschaft | Method for additive manufacturing |
| CN109381929A (en) * | 2018-12-14 | 2019-02-26 | 天津镭明激光科技有限公司 | A kind of increasing material manufacturing factory concentration filter system and its control method |
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2015
- 2015-12-16 CN CN201521053513.5U patent/CN205254109U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618751A (en) * | 2015-12-16 | 2016-06-01 | 伊特克斯惰性气体系统（北京）有限公司 | Selective laser melting system protected by ultra-pure atmosphere |
| CN105618751B (en) * | 2015-12-16 | 2018-03-27 | 伊特克斯惰性气体系统（北京）有限公司 | A kind of selective laser melting system of ultra-pure atmosphere protection |
| EP3292927A1 (en) * | 2016-09-13 | 2018-03-14 | Linde Aktiengesellschaft | Method for additive manufacturing |
| CN107290190A (en) * | 2017-07-31 | 2017-10-24 | 赣州市恒源科技股份有限公司 | A kind of rare earth metal inertia sampler and sampling method |
| CN109381929A (en) * | 2018-12-14 | 2019-02-26 | 天津镭明激光科技有限公司 | A kind of increasing material manufacturing factory concentration filter system and its control method |
| CN109381929B (en) * | 2018-12-14 | 2024-03-19 | 天津镭明激光科技有限公司 | Centralized filtering system of additive manufacturing factory and control method thereof |
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