CN108394099A - A kind of multi-functional SLM device - Google Patents
A kind of multi-functional SLM device Download PDFInfo
- Publication number
- CN108394099A CN108394099A CN201810047150.6A CN201810047150A CN108394099A CN 108394099 A CN108394099 A CN 108394099A CN 201810047150 A CN201810047150 A CN 201810047150A CN 108394099 A CN108394099 A CN 108394099A
- Authority
- CN
- China
- Prior art keywords
- baffle
- gas
- partition board
- bottom plate
- substrate
- 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
Links
- 239000007789 gas Substances 0.000 claims abstract description 76
- 238000000465 moulding Methods 0.000 claims abstract description 66
- 238000001914 filtration Methods 0.000 claims abstract description 35
- 239000001301 oxygen Substances 0.000 claims abstract description 34
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims description 48
- 238000005192 partition Methods 0.000 claims description 39
- 239000000843 powder Substances 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000010992 reflux Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 239000010425 asbestos Substances 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 21
- 239000011261 inert gas Substances 0.000 abstract description 14
- 238000010146 3D printing Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 229910052786 argon Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/264—Arrangements for irradiation
- B29C64/268—Arrangements for irradiation using laser beams; using electron beams [EB]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/35—Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Optics & Photonics (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Plasma & Fusion (AREA)
- Filtering Materials (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The present invention discloses a kind of multi-functional SLM device, belongs to laser 3D printing technical field, by warm-up block, vacuumizes module, gas circulation filtering module and four part of PLC controller and forms；Molding room is filled vacuum, is passed through inert gas by the present invention repeatedly first, oxygen content is set to be rapidly decreased in limits, and sensing heating is combined with infrared heating two ways, heating speed is fast, application material range is wide, heating time can substantially be shortened, significantly improve workpiece quality, reduce the temperature gradient of molded part, after heating process, it is continually fed into inert gas and uses secondary cycle filtration, effectively filter impurity particle present in gas, the secondary service efficiency for significantly improving gas, reduces economic cost.
Description
Technical field
The invention belongs to laser 3D printing technical fields, and in particular to a kind of multi-functional SLM device.
Background technology
Selective laser melting technology (Selective Laser Melting, SLM) is used as in rapid prototyping ＆ manufacturing technology
One kind, selectively heating is carried out to single layer powder as heat source using laser beam and is melted, is in single layer and the powder of interlayer
Particle bonds, and finally energy Quick-forming goes out the 3D solid of complicated shape.During component shaping, due to workbench bottom
Plate temperature is relatively low, and the temperature that laser fusion single layer powder generates is high, with the increase of forming height, gradually forms larger temperature
Gradient is spent, causes thermal stress, and then cause inside workpiece cracked, affects the mechanical properties.
By adding warm-up block in technique, seminess can effectively improve.It is industrial to be added using the installation in bottom plate position
Hot pin transfers heat to current powder bed by the powder with contacts baseplate.Although simple in structure, due to shaping plane
It is gradually distance from bottom plate, bottom plate preheating is obvious for initial several layers of forming effects close to bottom plate, and for subsequent forming
Layer influences little.It is found in commercial Application, the preheating temperature of which is difficult, if improving heating rod power, to hold more than 200 DEG C
Easily burn out even short circuit phenomenon.When heating higher temperature, the rate of heat addition is limited, increase time of production at
This.Meanwhile for higher preheating temperature, shaping indoor adjacent material and easily reacting with the oxygen in air, and then generate
Oxidative phenomena is unfavorable for the maintenance of molding room.By constantly injecting inert gas into molding room, pressure carries out convection circulation,
Air oxygen content is constantly diluted and reduces in molding room, so that oxygen content is down to 100ppm (0.01%) hereinafter, but
Time-consuming for this method, wastes inert gas, and deficiency in economic performance increases production cost.Meanwhile in laser forming process, swash
The dust that light evokes is taken out of by inert gas, and the gas of Particulate Inclusion impurity can not be used again, and is unfavorable for examining for economic cost
Consider.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of multi-functional SLM device, which first takes out molding room true
Sky, oxygen free condition combine sensing heating with infrared heating two ways, and heating speed is fast, and application material range is wide, energy
It is enough substantially to shorten heating time, significantly improve workpiece quality.
A kind of multi-functional SLM device, including warm-up block, module, gas circulation filtering module, powder supply mechanism are vacuumized,
The warm-up block is connected with module is vacuumized, and warm-up block is connected with gas circulation filtering module；
Warm-up block includes work box 1, substrate 2, bottom plate 4, load coil 5, leading screw 6, piston 7, moulding cylinder 8, cold
Water pipe 9, sleeve 10, molding room 15, infrared heat lamp 18, rotary head 181, bearing 182, path channels 19, workbench 21, hatch door
42, temperature sensor 43, muff 44；
Vacuumize module include dust-proof sieve 11, solenoid valve I 12, vacuum pump 13, muffler 14, oxygen content detector 16,
Pressure sensor 17, safety valve 20；
Gas circulation filtering module includes air inlet 22, exhaust outlet 23, filter device shell 24, gas outlet 25, solenoid valve
II 27, gas cylinder 28, level-one inlet air filtration mouth 30, baffle I 31, baffle II 32, retaining ring 33, filter core 34, support shaft 36, two are grading
Gas filters mouth 37, air guide port 38, gas channel 39, partition board I 40, partition board II 41；
Bottom plate 4, load coil 5, leading screw 6, piston 7, moulding cylinder 8, cold water pipe 9, sleeve are equipped in the work box 1
10, muff 44, are equipped with workbench 21 between work box 1 and molding room 15,21 middle part of workbench is equipped with hole, is equipped in hole
Substrate 2, substrate 2 are connect with one end of bottom plate 4, and the other end of bottom plate 4 is connected with piston 7, and leading screw 6, bottom plate 4 are also connected on piston 7
Outside be equipped with muff 44, the outside of muff 44 is equipped with load coil 5, bottom plate 4, load coil 5, muff
44, leading screw 6, piston 7 are arranged inside moulding cylinder 8, and 8 outside of moulding cylinder is equipped with cold water pipe 9, and moulding cylinder 8, cold water pipe 9 are arranged
Inside sleeve 10；Aspirating hole is also provided on workbench 21, aspirating hole is equipped with dust-proof sieve 11, and aspirating hole connects with vacuum pump 13
It connects, vacuum pump 13 is equipped with muffler 14；Solenoid valve I 12 is equipped between aspirating hole and vacuum pump 13；
15 side of molding room is provided with hatch door 42, and molding room 15 is additionally provided with oxygen content detector 16, pressure sensor 17, infrared
Heating lamp 18, safety valve 20, temperature sensor 43, oxygen content detector 16 are used to monitor the oxygen content in molding room 15, pressure
Force snesor 17 is used to monitor the pressure condition in molding room 15, and the probe of temperature sensor 43 is insert molded 8 inside of cylinder and is used for
The temperature of monitoring substrate 2, infrared heat lamp 18 are arranged in rotary head 181 for heating the substrate 2 surfaces, infrared heat lamp 18, turn
First 181 are arranged by bearing 182 at the top of 15 inner wall of molding room, and the quantity of infrared heat lamp 18 is that more than one and correspondence are set
Set rotary head and bearing, the setting of path channels 19 15 top of molding room and with 2 upper surface face of substrate, 15 both sides of molding room are equipped with
Air inlet 22 and exhaust outlet 23；
Air inlet 22 is connect with gas cylinder 28, and solenoid valve II 27 is equipped between air inlet 22 and gas cylinder 28；
Gas outlet 23 is connect with the level-one inlet air filtration mouth 30 on filter device shell 24, inside filter device shell 24
Equipped with baffle I 31, baffle II 32, retaining ring 33, filter core 34, support shaft 36, gas channel 39, partition board I 40, partition board II 41；It crosses
24 top setting level-one inlet air filtration mouth 30 of device case is filtered, gas outlet 25, baffle I 31 is arranged in the side of filter device shell 24
It is arranged on 24 inner wall of filter device shell with one end of baffle II 32, the other end is hanging, and baffle I 31 and baffle II 32 are staggeredly set
It sets on two pieces of opposite inner walls of filter device shell 24, forms gas channel 39, support between baffle I 31 and baffle II 32
Axis 36 passes through 24 top of filter device case, retaining ring 33 that filter core 34 is fixed in support shaft 36, and 34 both sides of filter core are equipped with partition board
I 40, partition board II 41, partition board I 40 are equipped with secondary inlet and filter mouth close to baffle I 31 and this side of baffle II 32, I 40 lower part of partition board
37, partition board II 41 is arranged with filter core 34 for formed symmetrical with partition board I 40, and II 41 top of partition board is equipped with air guide port 38；
Portion in the device is arranged in the powder supply mechanism in a conventional manner.
Refluxing opening 26 is equipped between the solenoid valve II 27 and gas cylinder 28, refluxing opening 26 is connect with gas outlet 25.
The solenoid valve I 12, vacuum pump 13, oxygen content detector 16, pressure sensor 17, safety valve 20, solenoid valve
II 27, temperature sensor 43, the rotary head 181 of infrared heat lamp 18, powder supply mechanism motor pass through conducting wire and the electricity of PLC controller 29
Property connection, PLC controller 29 carries out automatically controlling all parts, and PLC controller 29 is regular market purchase controller.
The substrate 2 is connect with bottom plate 4 by trip bolt 3.
6 lower end of the leading screw connect with servo motor and by Serve Motor Control elevating movement, and servo motor is controlled with PLC
Device 29 processed connects.
7 surface of the piston is covered with heat-barrier material, and heat-barrier material includes glass fibre, asbestos and silicate, silicate packet
Include alumina silicate, magnesium silicate etc..
The bottom plate 4 be stainless steel plate or carbon steel sheet, the substrate 2 be stainless steel plate, carbon steel sheet or titanium alloy sheet, according to
Practical formed powder is selected；The thickness of the bottom plate 4 is more than the thickness of substrate 2.
The quantity of the baffle I 31 is more than one, and the quantity of baffle II 32 is more than one.
The support shaft 36 is fixed on by sunk screw 35 on filter device shell 24.
The filter core 34 is polyester fiber non-woven fabric.
Inert gas is housed, inert gas includes nitrogen, argon gas etc. in the gas cylinder 28.
The work step of the multi-functional SLM device is as follows：
Step 1：It vacuumizes
(1) setting of PLC controller 29 is lower opens evacuation, connects solenoid valve I 12, Opening pressure sensor 17, oxygen
Content detection instrument 16 opens vacuum pump 13, and the muffler 14 on vacuum pump 13 starts simultaneously at work, vacuumized to molding room 15；
(2) when the pressure being evacuated in the display of pressure sensor 17 molding room 15 is -30kPa, stop vacuum pump 13,
Opens solenoid valve II 27 opens gas cylinder 28, is passed through inert gas, when pressure sensor 17 shows that the pressure in molding room 15 is high
When to 10kPa, solenoid valve II 27 is closed, safety valve 20 is opened, so that pressure in molding room 15 is dropped to 2kPa, and observe oxygen content
Oxygen content shown in detector 16 changes, if oxygen content value is higher than 100ppm, above-mentioned flow is repeated, until oxygen content detector 16
When showing that oxygen content concentration is less than 100ppm in molding room 15, solenoid valve I 12 is closed, closes vacuum pump 13；
Step 2：PLC controller 29 drives powder supply mechanism, it would be desirable to carry out molding dusty material with printed product one
Thickness height is laid in 2 upper surface of substrate；
Step 3：Preheating
(1) cooling-water machine is opened, flow is flowed into from 9 lower end of cold water pipe, keeps load coil 5 logical by PLC controller 29
Electricity, load coil 5 heat bottom plate 4, and under the protection of muff 44, temperature passes to substrate 2 by bottom plate 4 and formed
Accumulation of heat；
(2) PLC controller 29 is opened infrared heat lamp 18 and is heated to 2 surface of substrate, and PLC controller 29 is turned by control
First 181 to adjust 18 heat source angle of radiation of infrared heat lamp, and 2 surface of microwave radiation range covering substrate, accelerated heat is made to accumulate,
43 real-time display substrate of temperature sensor, 2 preheating temperature；
Step 4：It is passed through inert gas
Gas cylinder 28 is opened, 29 opens solenoid valve II 27 of PLC controller is passed through at air inlet 22 into molding room 15 lazy
Property gas, air-flow by after 21 plane of workbench by 23 inflow filter shell 24 of exhaust outlet；
Step 5：Laser formation and gas filtration
(1) temperature of 43 real-time display substrate 2 of temperature sensor is continually fed into inert gas after reaching preheating temperature,
Lasing light emitter is opened, starts to print, laser melts dusty material on a substrate 2 by the irradiation of path channels 19, you can is printed
Molding；
(2) in forming process, the air-flow entered from air inlet 22 is mixed into the miscellaneous of laser scaling loss powder by 2 surface of substrate
Matter enters and traveling along gas channel 39 from level-one inlet air filtration mouth 30 and moves, by the collision with baffle I 31 and baffle II 32,
Enter in filter core 34 along the secondary inlet filtering mouth 37 of the lower section of partition board I 40 after completing by-pass filtration, complete after secondary filtration from
The air guide port 38 of II 41 top of partition board flows out, and flows to refluxing opening 26 by gas outlet 25 and back flows back into molding room 15, completes to follow
Ring uses；
(3) after being molded layer of material on substrate 2, lead screw 6 moves down under the action of servo motor, 6 band of lead screw
Dynamic bottom plate 4 moves downward, and bottom plate 4 drives the identical thickness height of 2 downlink of substrate, repaves powder and prints next layer, successively scans through
After being printed at workpiece shaping, close lasing light emitter, PLC controller 29 close infrared heat lamp 18, load coil 5, close with
The connected servo motor of lead screw 6, closes gas cylinder 28 and solenoid valve II 27, persistently opens cooling water, waits for that temperature sensor 43 is shown
2 surface of substrate temperature be cooled to room temperature open hatch door 42, take out workpiece.
The present invention advantage be：
(1) being compared to traditional resistance wire or electrical bar heating bottom plate, the mode of sensing heating combination infrared heating makes
Heating speed increases, and the efficiency of heating surface is high, and operating cost is low, it is ensured that workpiece bottom has thermal accumlation.
(2) vacuumize repeatedly, be filled with inert gas and can reduce rapidly oxygen content, avoid the waste of gas, save the time at
This and economic cost, while under vacuum conditions, avoid remaining oxygen and molding it is indoor it is materials from oxidizing react, have
Conducive to the maintenance of molding room.
(3) the lasting injection of inert gas avoids flue dust that laser in forming process evokes for molding unfavorable shadow
It rings, and maintains the oxygen content of gas in limits, avoid dust and fire danger.
(4) the secondary filtration structure of circulation filter, has effectively filtered the granule foreign carried in gas, significantly purifies
Gas improves the utilization rate of gas, extends the service life of filter core, reduces economic cost.
(5) high temperature preheating of substrate advantageously reduces the thermal stress in forming process, reduces temperature gradient, significantly improves zero
Part mechanical property.
Description of the drawings
Fig. 1 is the structural schematic diagram of 1 device of the embodiment of the present invention；
Fig. 2 is the part-structure sectional view of 1 device of the embodiment of the present invention；
Fig. 3 is the part-structure sectional view of 1 device of the embodiment of the present invention；
In figure：1- work boxs, 2- substrates, 3- trip bolts, 4- bottom plates, 5- load coils, 6- leading screws, 7- pistons,
8- moulding cylinders, 9- cold water pipes, 10- sleeves, the dust-proof sieves of 11-, 12- solenoid valves I, 13- vacuum pumps, 14- mufflers, 15- moldings
Room, 16- oxygen content detectors, 17- pressure sensors, 18- infrared heat lamps, 181- rotary heads, 182- bearings, 19- light paths are logical
Road, 20- safety valves, 21- workbench, 22- air inlets, 23- exhaust outlets, 24- filter device shells, the gas outlets 25-, 26- reflux
Mouthful, 27- solenoid valves II, 28- gas cylinders, 29-PLC controllers, 30- level-one inlet air filtration mouths, 31- baffles I, 32- baffles II, 33-
Retaining ring, 34- filter cores, 35- sunk screws, 36- support shafts, 37- secondary inlets filtering mouth, 38- air guide ports, 39- gas channels,
40- partition boards I, 41- partition boards II, 42- hatch doors, 43- temperature sensors, 44- muffs.
Specific implementation mode
Below with reference to attached drawing, invention is further described in detail, and to the present invention, how applied technology method is come whereby
Technical problem is solved, and the realization process for reaching technique effect can be fully understood and implemented.The embodiment of the present application and reality
Each feature be combineding with each other under the premise of not colliding in example is applied, within protection scope of the present invention, but the present invention
Protection domain be not limited to the content.
Embodiment 1
A kind of multi-functional SLM device, as shown in Figure 1, 2, 3, including warm-up block, vacuumize module, gas circulation filtering
Module, powder supply mechanism, the warm-up block are connected with module is vacuumized, and warm-up block is connected with gas circulation filtering module；
Warm-up block includes work box 1, substrate 2, bottom plate 4, load coil 5, leading screw 6, piston 7, moulding cylinder 8, cold
Water pipe 9, sleeve 10, molding room 15, infrared heat lamp 18, rotary head 181, bearing 182, path channels 19, workbench 21, hatch door
42, temperature sensor 43, muff 44；It includes dust-proof sieve 11, solenoid valve I 12, vacuum pump 13, muffler to vacuumize module
14, oxygen content detector 16, pressure sensor 17, safety valve 20；Gas circulation filtering module includes air inlet 22, exhaust outlet
23, filter device shell 24, gas outlet 25, solenoid valve II 27, gas cylinder 28, level-one inlet air filtration mouth 30, baffle I 31, baffle II
32, retaining ring 33, filter core 34, support shaft 36, secondary inlet filtering mouth 37, air guide port 38, gas channel 39, partition board I 40, partition board
Ⅱ41；
Be equipped in work box 1 bottom plate 4, load coil 5, leading screw 6, piston 7, moulding cylinder 8, cold water pipe 9, sleeve 10,
Muff 44, is equipped with workbench 21 between work box 1 and molding room 15,21 middle part of workbench is equipped with hole, base is equipped in hole
Plate 2, substrate 2 are connect with one end of bottom plate 4 by trip bolt 3, and bottom plate 4 is stainless steel plate, and substrate 2 is stainless steel plate, specifically
It is selected according to practical formed powder, the thickness of bottom plate 4 is bigger 2cm than the thickness of substrate 2；The other end of bottom plate 4 is connected with piston 7, living
It fills in 7 surfaces and is covered with heat-barrier material, heat-barrier material is asbestos, asbestos thickness 5cm, is also connected with leading screw 6 on piston 7, under leading screw 6
End connect with servo motor and by Serve Motor Control elevating movement, the outside of bottom plate 4 equipped with muff 44, muff 44 outside
Portion is equipped with load coil 5, and bottom plate 4, load coil 5, muff 44, leading screw 6, piston 7 are arranged in moulding cylinder 8
Portion, 8 outside of moulding cylinder are equipped with cold water pipe 9, and moulding cylinder 8, cold water pipe 9 are arranged inside sleeve 10；Pumping is also provided on workbench 21
Stomata, aspirating hole are equipped with dust-proof sieve 11, and aspirating hole is connect with vacuum pump 13, and vacuum pump 13 is equipped with muffler 14, pumping
Solenoid valve I 12 is equipped between hole and vacuum pump 13；
15 side of molding room is provided with hatch door 42, and molding room 15 is additionally provided with oxygen content detector 16, pressure sensor 17, infrared
Heating lamp 18, safety valve 20, temperature sensor 43, oxygen content detector 16 are used to monitor the oxygen content in molding room 15, pressure
Force snesor 17 is used to monitor the pressure condition in molding room 15, and the probe of temperature sensor 43 is insert molded 8 inside of cylinder and is used for
The temperature value of monitoring substrate 2, infrared heat lamp 18 are arranged for heating the substrate 2 surfaces, infrared heat lamp 18 in rotary head 181,
Rotary head 181 is arranged by bearing 182 at the top of 15 inner wall of molding room, and the quantity of infrared heat lamp 18 is two and is correspondingly arranged
Rotary head and bearing, the setting of path channels 19 the top of molding room 15 and with 2 upper surface face of substrate, 15 both sides of molding room be equipped with into
Gas port 22 and exhaust outlet 23；Air inlet 22 is connect with gas cylinder 28, and inert gas argon gas, air inlet 22 and gas cylinder are housed in gas cylinder 28
It is equipped with solenoid valve II 27 between 28, refluxing opening 26 is equipped between solenoid valve II 27 and gas cylinder 28, refluxing opening 26 connects with gas outlet 25
It connects；
Gas outlet 23 is connect with the level-one inlet air filtration mouth 30 on filter device shell 24, is set inside filter device shell 24
There are baffle I 31, baffle II 32, retaining ring 33, filter core 34, support shaft 36, gas channel 39, partition board I 40, partition board II 41；Filtering
24 top setting level-one inlet air filtration mouth 30 of device case, gas outlet 25, I 31 He of baffle is arranged in the side of filter device shell 24
One end of baffle II 32 is arranged on 24 inner wall of filter device shell, and the other end is hanging, and baffle I 31 and baffle II 32 are staggered
On two pieces of opposite inner walls of filter device shell 24, gas channel 39, baffle I are formed between baffle I 31 and baffle II 32
31 quantity is three, and the quantity of baffle II 32 is three, and support shaft 36 passes through 24 top of filter device case, support shaft above
36 are fixed on by sunk screw 35 on filter device shell 24, and filter core 34 is fixed in support shaft 36 by retaining ring 33, filter core
34 be polyester fiber non-woven fabric, and 34 both sides of filter core are equipped with partition board I 40, partition board II 41, and partition board I 40 is close to baffle I 31 and baffle II
32 this side, I 40 lower part of partition board are equipped with secondary inlet and filter mouth 37, and partition board II 41 is formed symmetrical with filter core 34 with partition board I 40
Setting, II 41 top of partition board are equipped with air guide port 38.
Portion in the device is arranged in powder supply mechanism in a conventional manner, and powder supply mechanism conventional arrangement does not occur in the accompanying drawings,
The present embodiment powder supply mechanism includes motor, shaft, mechanical arm, connecting rod, scraper plate, shaft, mechanical arm, connecting rod, scraper plate setting
Inside molding room 15, motor is arranged in work box 1, and shaft lower end is connected to the motor, and mechanical arm is fixed in shaft, machinery
Arm is connected with connecting rod, and scraper plate is fixed on by screw in connecting rod, is rotated by motor, and shaft drives manipulator motion, in turn
Scraper plate is set to move.
Solenoid valve I 12, vacuum pump 13, oxygen content detector 16, pressure sensor 17, safety valve 20, solenoid valve II 27, temperature
Spend sensor 43, the rotary head 181 of infrared heat lamp 18, powder supply mechanism motor by conducting wire and PLC controller 29 electric connection,
PLC controller 29 carries out automatically controlling all parts, and PLC controllers 29 are regular market purchase controller, model OEMAX
NX70 series, the servo motor being connect with lead screw 6 are connect with PLC controller 29.
The work step of multi-functional SLM device is as follows：
Step 1：It vacuumizes
(1) setting of PLC controller 29 is lower opens evacuation, connects solenoid valve I 12, Opening pressure sensor 17, oxygen
Content detection instrument 16 opens vacuum pump 13, and the muffler 14 on vacuum pump 13 starts simultaneously at work, vacuumized to molding room 15；
(2) when the pressure being evacuated in the display of pressure sensor 17 molding room 15 is -30kPa, stop vacuum pump 13,
Opens solenoid valve II 27 opens gas cylinder 28, is passed through argon gas, when pressure sensor 17 shows the pressure in molding room 15 up to
When 10kPa, solenoid valve II 27 is closed, safety valve 20 is opened, so that pressure in molding room 15 is dropped to 2kPa, and observe oxygen content
Oxygen content shown in detector 16 changes, if oxygen content value is higher than 100ppm, above-mentioned flow is repeated, until oxygen content detector 16
When showing that oxygen content concentration is less than 100ppm in molding room 15, solenoid valve I 12 is closed, closes vacuum pump 13；
Step 2：PLC controller is to drive powder supply mechanism, and powder supply mechanism is by motor, shaft, mechanical arm, connecting rod, scraper plate
Composition, motor are arranged in work box 1, and shaft, mechanical arm, connecting rod, scraper plate are arranged in molding room 15, shaft lower end and electricity
Machine is connected, and mechanical arm is fixed in shaft, and mechanical arm is connected with connecting rod, and scraper plate is fixed on by screw in connecting rod, passes through electricity
Machine rotates, and shaft drives manipulator motion, and then scraper plate is made to move, and anaerobic copper powders are laid in the thickness height of 0.03mm
2 upper surface of substrate；
Step 3：Preheating
(1) cooling-water machine is opened, flow is flowed into from 9 lower end of cold water pipe, keeps load coil 5 logical by PLC controller 29
Electricity, load coil 5 heat bottom plate 4, and under the protection of muff 44, temperature passes to substrate 2 by bottom plate 4 and formed
Accumulation of heat；
(2) PLC controller 29 opens infrared heat lamp 18 and starts to heat to 2 surface of substrate, and PLC controller 29 passes through control
Rotary head 181 makes 2 surface of microwave radiation range covering substrate, accelerated heat product to adjust 18 heat source angle of radiation of infrared heat lamp
It is tired, 43 real-time display substrate of temperature sensor, 2 preheating temperature；
Step 4：It is passed through inert gas
Gas cylinder 28 is opened, 29 opens solenoid valve II 27 of PLC controller is passed through argon at air inlet 22 into molding room 15
Gas, air-flow by after 21 plane of workbench by 23 inflow filter shell 24 of exhaust outlet；
Step 5：Laser formation and gas filtration
(1) temperature of 43 real-time display substrate 2 of temperature sensor is continually fed into argon gas after reaching 150 DEG C, opens and swashs
Light source starts to print, and laser is irradiated by path channels 19 and melts anaerobic copper powders on a substrate 2, you can carries out printing shaping；
(2) in forming process, the air-flow entered from air inlet 22 is mixed into the miscellaneous of laser scaling loss powder by 2 surface of substrate
Matter enters and traveling along gas channel 39 from level-one inlet air filtration mouth 30 and moves, by the collision with baffle I 31 and baffle II 32,
Enter in filter core 34 along the secondary inlet filtering mouth 37 of the lower section of partition board I 40 after completing by-pass filtration, complete after secondary filtration from
The air guide port 38 of II 41 top of partition board flows out, and flows to refluxing opening 26 by gas outlet 25 and back flows back into molding room 15, completes to follow
Ring uses；
(3) after being molded one layer of anaerobic copper powders on substrate 2, lead screw 6 moves down under the action of servo motor, silk
Bar 6 drives bottom plate 4 to move downward, and bottom plate 4 drives the thickness height of 2 downlink 0.03mm of substrate, repaves powder and prints next layer, successively
After workpiece shaping printing is completed in scanning, lasing light emitter is closed, PLC controller 29 closes infrared heat lamp 18, load coil 5,
The servo motor being connected with lead screw 6 is closed, gas cylinder 28 and solenoid valve II 27 is closed, persistently opens cooling water, wait for temperature sensor
The temperature on 2 surface of substrate of 43 displays, which is cooled to room temperature, opens hatch door 42, takes out oxygen-free copper part.
The quantity of baffle I 31 and baffle II 32 changes, and 7 surface of piston changes coated with heat-barrier material, substrate 2 and bottom plate 4
Material variation when, can equally obtain good using effect.
Claims (10)
1. a kind of multi-functional SLM device, which is characterized in that including warm-up block, vacuumize module, gas circulation filtering module,
Powder supply mechanism, the warm-up block are connected with module is vacuumized, and warm-up block is connected with gas circulation filtering module；
Warm-up block includes work box（1）, substrate（2）, bottom plate（4）, load coil（5）, leading screw（6）, piston（7）, at
Type cylinder（8）, cold water pipe（9）, sleeve（10）, molding room（15）, infrared heat lamp（18）, rotary head（181）Bearing（182）, light path
Channel（19）, workbench（21）, hatch door（42）, temperature sensor（43）, muff（44）；
It includes dust-proof sieve to vacuumize module（11）, solenoid valve I（12）, vacuum pump（13）, muffler（14）, oxygen content detector
（16）, pressure sensor（17）, safety valve（20）；
Gas circulation filtering module includes air inlet（22）, exhaust outlet（23）, filter device shell（24）, gas outlet（25）, electricity
Magnet valve II（27）, gas cylinder（28）, level-one inlet air filtration mouth（30）, baffle I（31）, baffle II（32）, retaining ring（33）, filter core
（34）, support shaft（36）, secondary inlet filter mouth（37）, air guide port（38）, gas channel（39）, partition board I（40）, partition board II
（41）；
The work box（1）It is interior to be equipped with bottom plate（4）, load coil（5）, leading screw（6）, piston（7）, moulding cylinder（8）, cold water
Pipe（9）, sleeve（10）, muff（44）, work box（1）With molding room（15）Between be equipped with workbench（21）, workbench（21）
Middle part is equipped with hole, and substrate is equipped in hole（2）, substrate（2）With bottom plate（4）One end connection, bottom plate（4）The other end be connected with
Piston（7）, piston（7）On be also connected with leading screw（6）, bottom plate（4）Outside be equipped with muff（44）, muff（44）Outside set
There is load coil（5）, bottom plate（4）, load coil（5）, muff（44）, leading screw（6）, piston（7）Setting at
Type cylinder（8）Inside, moulding cylinder（8）Outside is equipped with cold water pipe（9）, moulding cylinder（8）, cold water pipe（9）It is arranged in sleeve（10）It is internal；
Workbench（21）On be also provided with aspirating hole, aspirating hole is equipped with dust-proof sieve（11）, aspirating hole and vacuum pump（13）Connection, vacuum
Pump（13）It is equipped with muffler（14）；Aspirating hole and vacuum pump（13）Between be equipped with solenoid valve I（12）；
Molding room（15）Side is provided with hatch door（42）, molding room（15）Equipped with oxygen content detector（16）, pressure sensor（17）、
Infrared heat lamp（18）, safety valve（20）, temperature sensor（43）, infrared heat lamp（18）It is arranged in rotary head（181）On, rotary head
（181）Pass through bearing（182）It is arranged in molding room（15）At the top of inner wall, the quantity of infrared heat lamp 18 is more than one and corresponds to
Rotary head and bearing, path channels are set（19）It is arranged in molding room（15）Top and and substrate（2）Upper surface face, molding room
（15）Both sides are equipped with air inlet（22）And exhaust outlet（23）；
Air inlet（22）With gas cylinder（28）Connection, air inlet（22）With gas cylinder（28）Between be equipped with solenoid valve II（27）；
Gas outlet（23）With filter device shell（24）On level-one inlet air filtration mouth（30）Connection, filter device shell（24）It is interior
Portion is equipped with baffle I（31）, baffle II（32）, retaining ring（33）, filter core（34）, support shaft（36）, gas channel（39）, partition board I
（40）, partition board II（41）；Filter device shell（24）Level-one inlet air filtration mouth is arranged in top（30）, filter device shell（24）'s
Gas outlet is arranged in side（25）, baffle I（31）With baffle II（32）One end be arranged in filter device shell（24）On inner wall, separately
One end is hanging, baffle I（31）With baffle II（32）It is staggered in filter device shell（24）Two pieces of opposite inner walls on, gear
Plate I（31）With baffle II（32）Between form gas channel（39）, support shaft（36）Across filter device case（24）Top, locking
Ring（33）By filter core（34）It is fixed on support shaft（36）On, filter core（34）Both sides are equipped with partition board I（40）, partition board II（41）, partition board I
（40）Close to baffle I（31）With baffle II（32）This side, partition board I（40）Lower part is equipped with secondary inlet and filters mouth（37）, partition board
Ⅱ（41）With partition board I（40）With filter core（34）It is arranged for formed symmetrical, partition board II（41）Top is equipped with air guide port（38）；
Portion in the device is arranged in the powder supply mechanism in a conventional manner.
2. multi-functional SLM device according to claim 1, which is characterized in that the solenoid valve II（27）With gas cylinder（28）It
Between be equipped with refluxing opening（26）, refluxing opening（26）With gas outlet（25）Connection.
3. multi-functional SLM device according to claim 1, which is characterized in that the solenoid valve I（12）, vacuum pump（13）、
Oxygen content detector（16）, pressure sensor（17）, safety valve（20）, solenoid valve II（27）, temperature sensor（43）, it is infrared plus
Thermolamp（18）Rotary head（181）, powder supply mechanism and PLC controller（29）It is electrically connected.
4. multi-functional SLM device according to claim 1, which is characterized in that the substrate（2）With bottom plate（4）Pass through fastening
Screw（3）Connection.
5. multi-functional SLM device according to claim 3, which is characterized in that the leading screw（6）Lower end connects with servo motor
It connects, servo motor and PLC controller（29）Connection.
6. multi-functional SLM device according to claim 1, which is characterized in that the piston（7）Surface is covered with heat-barrier material,
Heat-barrier material is glass fibre, asbestos or silicate.
7. multi-functional SLM device according to claim 1, which is characterized in that the bottom plate（4）For stainless steel plate or carbon steel
Plate, the substrate（2）For stainless steel plate, carbon steel sheet or titanium alloy sheet, selected according to practical formed powder；The bottom plate（4）'s
Thickness is more than substrate（2）Thickness.
8. multi-functional SLM device according to claim 1, which is characterized in that the baffle I（31）Quantity be one with
On, baffle II（32）Quantity be more than one.
9. multi-functional SLM device according to claim 1, which is characterized in that the support shaft（36）Pass through sunk screw
（35）It is fixed on filter device shell（24）On.
10. multi-functional SLM device according to claim 1, which is characterized in that the filter core（34）For polyester fiber nonwoven
Cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810047150.6A CN108394099B (en) | 2018-01-18 | 2018-01-18 | A kind of multi-functional SLM device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810047150.6A CN108394099B (en) | 2018-01-18 | 2018-01-18 | A kind of multi-functional SLM device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108394099A true CN108394099A (en) | 2018-08-14 |
| CN108394099B CN108394099B (en) | 2019-12-03 |
Family
ID=63094748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810047150.6A Active CN108394099B (en) | 2018-01-18 | 2018-01-18 | A kind of multi-functional SLM device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108394099B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110027216A (en) * | 2019-04-04 | 2019-07-19 | 上海航天设备制造总厂有限公司 | A kind of 3D printing device and method improving workpiece shaping quality |
| CN110641015A (en) * | 2019-08-30 | 2020-01-03 | 威斯坦(厦门)实业有限公司 | SLS nylon powder 3D laser printer forming cylinder and using method thereof |
| CN112846242A (en) * | 2020-12-31 | 2021-05-28 | 天津镭明激光科技有限公司 | Integrated system and method for monitoring environment in printing cabin of 3D printer |
| CN113056336A (en) * | 2018-11-15 | 2021-06-29 | 格布尔.贝克尔有限责任公司 | Method and device for operating a metal printing device |
| CN113084168A (en) * | 2021-04-06 | 2021-07-09 | 哈尔滨工业大学 | Laser melting deposition forming ultrasonic workbench |
| CN113125672A (en) * | 2021-04-20 | 2021-07-16 | 吉林大学 | 3D printing metal performance test equipment and performance test method under different oxygen contents |
| CN114789519A (en) * | 2022-05-26 | 2022-07-26 | 山东中鲁管业有限公司 | High-frequency induction heating device for pipeline production |
| CN115283702A (en) * | 2022-07-28 | 2022-11-04 | 武汉大学 | Method and device for inhibiting anisotropy and crack of laser energy deposition high-temperature alloy |
| CN116984633A (en) * | 2023-09-25 | 2023-11-03 | 四川工程职业技术学院 | Purging device for 3D printing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012006037A (en) * | 2010-06-24 | 2012-01-12 | Kobe Steel Ltd | Spray-forming deposition method |
| CN104016686A (en) * | 2014-03-07 | 2014-09-03 | 南京理工大学 | Selective laser fusion molding equipment for ceramic material |
| CN204975280U (en) * | 2015-08-27 | 2016-01-20 | 昆明理工大学 | High frequency magnetic field refines device that metal solidifies tissue with pulse current in coordination |
| CN107379527A (en) * | 2017-07-25 | 2017-11-24 | 华中科技大学 | A kind of pre-heating mean and device suitable for powdering formula increasing material manufacturing |
| US20170348792A1 (en) * | 2016-06-01 | 2017-12-07 | Arcam Ab | Method for additive manufacturing |
| JP2018003087A (en) * | 2016-06-30 | 2018-01-11 | キヤノン株式会社 | Three-dimensional molding apparatus, and method for manufacturing three-dimensionally molded article |
-
2018
- 2018-01-18 CN CN201810047150.6A patent/CN108394099B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012006037A (en) * | 2010-06-24 | 2012-01-12 | Kobe Steel Ltd | Spray-forming deposition method |
| CN104016686A (en) * | 2014-03-07 | 2014-09-03 | 南京理工大学 | Selective laser fusion molding equipment for ceramic material |
| CN204975280U (en) * | 2015-08-27 | 2016-01-20 | 昆明理工大学 | High frequency magnetic field refines device that metal solidifies tissue with pulse current in coordination |
| US20170348792A1 (en) * | 2016-06-01 | 2017-12-07 | Arcam Ab | Method for additive manufacturing |
| JP2018003087A (en) * | 2016-06-30 | 2018-01-11 | キヤノン株式会社 | Three-dimensional molding apparatus, and method for manufacturing three-dimensionally molded article |
| CN107379527A (en) * | 2017-07-25 | 2017-11-24 | 华中科技大学 | A kind of pre-heating mean and device suitable for powdering formula increasing material manufacturing |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113056336B (en) * | 2018-11-15 | 2023-08-08 | 格布尔.贝克尔有限责任公司 | Method and device for operating a metal printing device |
| CN113056336A (en) * | 2018-11-15 | 2021-06-29 | 格布尔.贝克尔有限责任公司 | Method and device for operating a metal printing device |
| CN110027216B (en) * | 2019-04-04 | 2021-06-11 | 上海航天设备制造总厂有限公司 | 3D printing device and method for improving workpiece forming quality |
| CN110027216A (en) * | 2019-04-04 | 2019-07-19 | 上海航天设备制造总厂有限公司 | A kind of 3D printing device and method improving workpiece shaping quality |
| CN110641015A (en) * | 2019-08-30 | 2020-01-03 | 威斯坦(厦门)实业有限公司 | SLS nylon powder 3D laser printer forming cylinder and using method thereof |
| CN110641015B (en) * | 2019-08-30 | 2021-09-17 | 威斯坦(厦门)实业有限公司 | SLS nylon powder 3D laser printer forming cylinder and using method thereof |
| CN112846242A (en) * | 2020-12-31 | 2021-05-28 | 天津镭明激光科技有限公司 | Integrated system and method for monitoring environment in printing cabin of 3D printer |
| CN113084168A (en) * | 2021-04-06 | 2021-07-09 | 哈尔滨工业大学 | Laser melting deposition forming ultrasonic workbench |
| CN113125672A (en) * | 2021-04-20 | 2021-07-16 | 吉林大学 | 3D printing metal performance test equipment and performance test method under different oxygen contents |
| CN114789519A (en) * | 2022-05-26 | 2022-07-26 | 山东中鲁管业有限公司 | High-frequency induction heating device for pipeline production |
| CN114789519B (en) * | 2022-05-26 | 2024-01-26 | 山东中鲁管业有限公司 | High-frequency induction heating device for pipeline production |
| CN115283702A (en) * | 2022-07-28 | 2022-11-04 | 武汉大学 | Method and device for inhibiting anisotropy and crack of laser energy deposition high-temperature alloy |
| CN116984633A (en) * | 2023-09-25 | 2023-11-03 | 四川工程职业技术学院 | Purging device for 3D printing |
| CN116984633B (en) * | 2023-09-25 | 2023-12-22 | 四川工程职业技术学院 | Purging device for 3D printing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108394099B (en) | 2019-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108394099B (en) | A kind of multi-functional SLM device | |
| CN106365419A (en) | 3D glass processing production line | |
| CN101893373B (en) | Vertical and horizontal efficient energy-saving vacuum controlled atmosphere furnace for continuous production | |
| CN106111986A (en) | A kind of laser 3D printing device | |
| CN206033558U (en) | 3D glass processing production line | |
| CN2709905Y (en) | Bell multi-firepot induction heating furnace | |
| CN101377383B (en) | Rapid vacuum induction melting furnace | |
| CN107093536A (en) | A kind of hot-melting mechanism for being used to seal relay air-vent and its method for sealing air-vent | |
| CN101782325A (en) | Vacuum intermediate frequency induction furnace | |
| CN218155455U (en) | Refractory brick firing device | |
| CN207143088U (en) | A kind of new 3D glass heats bender | |
| CN213955969U (en) | Nickel-based alloy smelting induction furnace with ultrasonic omni-directional reaching function | |
| CN210945637U (en) | Brown sugar production facility | |
| CN207183170U (en) | A kind of hot-melting mechanism for being used to seal relay air-vent | |
| CN208136100U (en) | A kind of high-purity and highly active calcium oxide calcining kiln | |
| KR20060011764A (en) | Injection mold provided with momentary mold surface heating apparatus | |
| CN208671664U (en) | A kind of box electric kiln may filter that furnace gas | |
| CN201628472U (en) | Vacuum mid-frequency induction furnace | |
| CN106739028A (en) | A kind of automatic heat treatment equipment for polylactide material mould | |
| CN220366690U (en) | Nitriding alloy vacuum nitriding furnace | |
| CN110421161A (en) | A kind of multi chamber vacuum continuous oven for the preparation of samarium cobalt permanent magnet body | |
| CN110643747A (en) | Brown sugar production facility | |
| CN2073099U (en) | Resistance furnace with variable power and high efficiency energy-saving box | |
| CN218410745U (en) | Top-opening type gas and electric heating high-temperature furnace | |
| CN2669117Y (en) | Aluminium alloy air circulating furnace |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |