CN112170850A - Rapid auxiliary selective laser melting forming part heat treatment equipment - Google Patents
Rapid auxiliary selective laser melting forming part heat treatment equipment Download PDFInfo
- Publication number
- CN112170850A CN112170850A CN202011008768.5A CN202011008768A CN112170850A CN 112170850 A CN112170850 A CN 112170850A CN 202011008768 A CN202011008768 A CN 202011008768A CN 112170850 A CN112170850 A CN 112170850A
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- China
- Prior art keywords
- furnace body
- selective laser
- base
- heat treatment
- formed part
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
Abstract
The invention provides a rapid auxiliary selective laser melting forming part heat treatment device, which comprises a forming bin, a furnace body and a base, wherein the forming bin is arranged on the furnace body; the forming bin and the furnace body are connected up and down to form a whole barrel shape, the base is horizontally arranged in the whole barrel, the side surface of the bottom of the forming bin is provided with an ultrasonic pulse generator, and the top of the furnace body is provided with a furnace cover capable of transversely stretching. The formed part does not need to be cooled along with the furnace in the heat treatment process, so that the part is prevented from being deformed in the cooling process due to the fact that the part needs to be taken out after manual powder cleaning; the precise temperature control is convenient to realize, so that the effective heat treatment of the part is realized, the deformation is reduced, and the performance of the part is improved; the forming part is subjected to heat treatment quickly in real time, the residual stress is released quickly, and the part deformation is avoided effectively.
Description
Technical Field
The invention relates to a rapid auxiliary selective laser melting part heat treatment device, and belongs to the technical field of selective laser melting manufacturing.
Background
Selective Laser Melting (SLM) is a new type of Rapid Prototyping technology. It combines CAD/CAM, numerical control, optics and material science, uses various pure metal or alloy powder materials as processing raw materials, adopts a medium-small power laser to rapidly and completely melt selective metal powder, and combines a rapid cooling solidification technology, so that a non-equilibrium supersaturated solid solution and a uniform and fine metallographic structure can be obtained, the density of a formed part is nearly 100%, and the mechanical property is equivalent to that of a forged part. Moreover, the SLM technology has the characteristics of simple process, wide range of molding materials (single metal powder, composite powder, high melting point refractory alloy powder, and the like), capability of manufacturing complex metal parts which are difficult to manufacture by the traditional process method, and the like, and has become the most promising technology in all the rapid molding technologies at present. However, in the selective laser melting process, the rapid heating and rapid cooling process is prone to form stress concentration in the forming layer, which causes deformation of the part, so that after the forming is finished, heat treatment is required to be performed in time to release stress, and the deformation of the part is reduced. In general, a selective laser melting forming machine and a heat treatment furnace belong to two different systems, and after the part is formed, heat treatment cannot be performed in time, so that the part is deformed, and the use is influenced.
Disclosure of Invention
In order to solve the technical problem, the invention provides the rapid auxiliary selective laser melting part heat treatment equipment, which is characterized in that a heat treatment furnace body is arranged below a forming bin, after the part is formed, powder in the forming bin is cleaned by adopting ultrasonic pulse and vacuum adsorption, and then the formed part is moved into the furnace body for heat treatment, so that the time can be effectively saved, and the part is prevented from being rapidly cooled in room temperature to cause large deformation.
The invention is realized by the following technical scheme.
The invention provides a rapid auxiliary selective laser melting forming part heat treatment device, which comprises a forming bin, a furnace body and a base, wherein the forming bin is provided with a plurality of forming holes; the forming bin and the furnace body are connected up and down to form a whole barrel shape, the base is horizontally arranged in the whole barrel, the side surface of the bottom of the forming bin is provided with an ultrasonic pulse generator, and the top of the furnace body is provided with a furnace cover capable of transversely stretching.
The furnace cover is driven by a driving mechanism, and the driving mechanism is arranged on the outer side of the top of the furnace body.
The base is provided with a substrate; the bottom surface of the base is provided with a heat insulation coating.
The bottom of the base is fixed at the top end of the screw rod, the lower end of the screw rod is installed in the motor, and the motor is located outside the bottom of the furnace body and drives the screw rod to act.
The side edge of the bottom of the forming bin is provided with a powder falling hopper, the powder falling hopper is over against the ultrasonic pulse generator, and the powder falling hopper is communicated to the material collecting device.
The inner side wall of the furnace body is provided with a thermocouple and an electric heating element.
The bottom of the furnace body is provided with an opening.
And the side edge of the base is surrounded with felt for heat insulation.
The thermocouple and the electric heating element are arranged around the furnace body, the electric heating element is positioned at the position close to the bottom of the furnace body, and the thermocouple is positioned at the upper part of the furnace body.
The ultrasonic pulse frequency of the ultrasonic pulse generator is 5 MHz-10 MHz, the working voltage of the electric heating element is 50-100V, and the heating temperature is 200-850 ℃.
The invention has the beneficial effects that: the part does not need to be cooled along with the furnace in the heat treatment process of the formed part, so that the part is prevented from being deformed in the cooling process due to the fact that the part needs to be taken out after manual powder cleaning; the precise temperature control is convenient to realize, so that the effective heat treatment of the part is realized, the deformation is reduced, and the performance of the part is improved; the forming part is subjected to heat treatment quickly in real time, the residual stress is released quickly, and the part deformation is avoided effectively.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1-forming bin, 2-powder falling hopper, 3-collecting device, 4-substrate, 5-base, 6-felt, 7-ultrasonic pulse generator, 8-driving mechanism, 9-furnace cover, 10-thermocouple, 11-electrothermal element, 12-lead screw, 13-motor, 14-furnace body, 15-computer, 16-voltmeter, 17-ammeter, 18-switch and 19-temperature controller.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in figure 1, the rapid auxiliary selective laser melting forming part heat treatment equipment comprises a forming bin 1, a furnace body 14 and a base 5; the forming bin 1 and the furnace body 14 are connected up and down to form a whole barrel shape, the base 5 is horizontally arranged in the whole barrel, the side surface of the bottom of the forming bin 1 is provided with an ultrasonic pulse generator 7, and the top of the furnace body 14 is provided with a furnace cover 9 which can transversely stretch out and draw back.
The furnace cover 9 is driven by a driving mechanism 8, and the driving mechanism 8 is arranged outside the top of the furnace body 14.
The base 5 is provided with a substrate 4; the bottom surface of the base 5 is provided with a heat insulation coating.
The bottom of the base 5 is fixed on the top end of a screw 12, the lower end of the screw 12 is installed in a motor 13, and the motor 13 is positioned outside the bottom of the furnace body 14 and drives the screw 12 to move.
The side edge of the bottom of the forming bin 1 is provided with a powder falling hopper 2, the powder falling hopper 2 is over against the ultrasonic pulse generator 7, and the powder falling hopper 2 is communicated with the material collecting device 3.
The inner side wall of the furnace body 14 is provided with a thermocouple 10 and an electric heating element 11.
The bottom of the furnace body 14 is provided with an opening.
The base 5 is surrounded on its side by felt 6 for thermal insulation.
The thermocouple 10 and the electric heating element 11 are arranged around the furnace body 14, the electric heating element 11 is positioned at the position close to the bottom of the furnace body 14, and the thermocouple 10 is positioned at the upper part of the furnace body 14.
Preferably, the ultrasonic pulse frequency of the ultrasonic pulse generator 7 is 5 MHz-10 MHz, the working voltage of the electric heating element 11 is 50-100V, and the heating temperature is 200-850 ℃.
Example 1
The furnace body 14 is arranged below the forming bin 1 and is a central line with the forming bin 1.
The bottom of the furnace body 14 is provided with an opening, and when the base 5 runs to the opening at the bottom of the furnace body 14, a sealing structure is formed with the furnace body 14.
The furnace cover 9 is arranged above the furnace body 14 and is controlled by the driving mechanism 8 to contract;
the furnace cover 9 is of a telescopic structure, when the residual powder in the forming bin is cleaned and the base 5 moves into the furnace body 14, the driving mechanism 8 controls the furnace cover 9 to move to the right side of the furnace body 14 to form a sealing structure with the furnace body 14.
And a heat preservation coating is arranged on the surface of one side of the furnace cover close to the inside of the furnace.
The base plate 4 is fixed on the base 5, the base 5 is fixed on the screw rod 12, and the base reciprocates up and down along the directions of the forming bin 1 and the furnace body 14 under the action of the motor 13;
the base 5 is a high-temperature-resistant material, and the bottom surface of the base 5 is provided with a heat-insulating coating, so that the lead screw 12 is prevented from being damaged due to downward heat transfer.
The felt 6 is fixed on the periphery of the base 5 and connected with the forming bin 1, and the felt 6 is made of high-temperature resistant material and has the temperature higher than 900 ℃.
The powder falling hopper 2 is arranged at the side edge of the bottom of the forming bin 1 and is connected with the material collecting device 3 through a metal hose;
the ultrasonic pulse generator 7 is arranged on the forming bin 1 at a position corresponding to the powder falling hopper 2;
the driving mechanism 8, the motor 13, the driving device of the ultrasonic pulse generator 7 and the motor of the vacuum adsorption and filtration device are all arranged in the explosion-proof device.
After the part is formed, when base plate 4 descends to the position that powder hopper 2 lower limb just is higher than ultrasonic pulse generator 7 that falls, adopts the device clearance that gathers materials to form the interior powder of storehouse to adopt ultrasonic pulse to strike the base plate, clear up the remaining powder in part surface, the powder is reserved after getting into the device that gathers materials and using next time after sieving.
The electric thermocouple 10 and the thermal element 11 surround the periphery of the furnace wall;
the voltmeter 16, the ammeter 17, the switch 18 and the temperature controller 19 are integrated in the computer 15 and are connected with the electric heating element 10 and the thermocouple 11 through leads.
When the parts are in the furnace, the temperature in the furnace is controlled by controlling the voltage and the current of the electric heating element, and the heat treatment of the parts is realized.
The frequency of the ultrasonic pulse is 5 MHz-10 MHz
The voltage of the electric heating element is 50-100V, and the heating temperature is 200-850 ℃.
From the above, the present invention:
(1) ultrasonic pulse and vacuum adsorption are adopted to clean the powder, the part does not need to be cooled along with the furnace, and the part is prevented from being deformed in the cooling process due to the fact that the part needs to be taken out during manual powder cleaning.
(2) The temperature control can be accurately realized, so that the effective heat treatment of the parts is realized, the deformation is reduced, and the performance of the parts is improved.
(3) The method can realize real-time and quick heat treatment on the formed parts, quickly release residual stress and effectively avoid part deformation.
Claims (10)
1. The utility model provides a quick supplementary district laser melting of selecting takes shape part heat treatment facility, includes shaping storehouse (1), furnace body (14), base (5), its characterized in that: the forming bin (1) and the furnace body (14) are connected up and down to form a whole barrel, the base (5) is horizontally arranged in the whole barrel, the ultrasonic pulse generator (7) is arranged on the side surface of the bottom of the forming bin (1), and the top of the furnace body (14) is provided with a furnace cover (9) capable of transversely stretching.
2. The apparatus for heat treating a rapidly assisting selective laser melt formed part of claim 1, further comprising: the furnace cover (9) is driven by a driving mechanism (8), and the driving mechanism (8) is arranged on the outer side of the top of the furnace body (14).
3. The apparatus for heat treating a rapidly assisting selective laser melt formed part of claim 1, further comprising: the base (5) is provided with a substrate (4); the bottom surface of the base (5) is provided with a heat insulation coating.
4. The apparatus for heat treating a rapidly assisting selective laser melt formed part of claim 1, further comprising: the bottom of the base (5) is fixed at the top end of a screw rod (12), the lower end of the screw rod (12) is installed in a motor (13), and the motor (13) is located outside the bottom of the furnace body (14) and drives the screw rod (12) to move.
5. The apparatus for heat treating a rapidly assisting selective laser melt formed part of claim 1, further comprising: the side edge of the bottom of the forming bin (1) is provided with a powder falling hopper (2), the powder falling hopper (2) is over against the ultrasonic pulse generator (7), and the powder falling hopper (2) is communicated to the material collecting device (3).
6. The apparatus for heat treating a rapidly assisting selective laser melt formed part of claim 1, further comprising: the inner side wall of the furnace body (14) is provided with a thermocouple (10) and an electric heating element (11).
7. The apparatus for heat treating a rapidly assisting selective laser melt formed part of claim 1, further comprising: the bottom of the furnace body (14) is provided with an opening.
8. The apparatus for heat treating a rapidly assisting selective laser melt formed part of claim 1, further comprising: and a felt (6) is arranged on the side edge of the base (5) in a surrounding mode and used for heat insulation.
9. The apparatus for heat treating a rapidly assisting selectively laser melt formed part as claimed in claim 6, wherein: the thermocouple (10) and the electric heating element (11) are arranged around the furnace body (14), the electric heating element (11) is positioned at the position close to the bottom of the furnace body (14), and the thermocouple (10) is positioned at the upper part of the furnace body (14).
10. The apparatus for heat treating a rapidly assisting selective laser melt formed part of claim 1, further comprising: the ultrasonic pulse frequency of the ultrasonic pulse generator (7) is 5 MHz-10 MHz, the working voltage of the electric heating element (11) is 50-100V, and the heating temperature is 200-850 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011008768.5A CN112170850A (en) | 2020-09-23 | 2020-09-23 | Rapid auxiliary selective laser melting forming part heat treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011008768.5A CN112170850A (en) | 2020-09-23 | 2020-09-23 | Rapid auxiliary selective laser melting forming part heat treatment equipment |
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| Publication Number | Publication Date |
|---|---|
| CN112170850A true CN112170850A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011008768.5A Pending CN112170850A (en) | 2020-09-23 | 2020-09-23 | Rapid auxiliary selective laser melting forming part heat treatment equipment |
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| Country | Link |
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| CN (1) | CN112170850A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023006738A1 (en) * | 2021-07-28 | 2023-02-02 | Plastiprint 3D LTD. | Method of forming an object by additive manufacturing within a furnace, and furnace for additive manufacture of an object |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202133271U (en) * | 2011-06-16 | 2012-02-01 | 西北工业大学 | Surface atmosphere heating furnace for laser quick formation |
| DE102012206125A1 (en) * | 2012-04-13 | 2013-10-17 | MTU Aero Engines AG | Process for the production of low-pressure turbine blades made of TiAl |
| CN105499569A (en) * | 2015-12-24 | 2016-04-20 | 华中科技大学 | Active temperature field regulating and controlling system for manufacturing high-energy beam reinforced material and control method for active temperature field regulating and controlling system |
| CN106180719A (en) * | 2016-09-27 | 2016-12-07 | 飞而康快速制造科技有限责任公司 | Selective laser fusing increases IN718 component, system, heat treatment method and the device that material manufactures |
| CN108115129A (en) * | 2016-11-29 | 2018-06-05 | 中国兵器装备研究院 | A kind of 3D printing room with thermal treatment bin |
| CN108746613A (en) * | 2018-05-31 | 2018-11-06 | 华中科技大学 | A kind of online heat treatment system of selective laser fusing |
| CN108907198A (en) * | 2018-09-21 | 2018-11-30 | 天津镭明激光科技有限公司 | A kind of increasing material manufacturing laser formation system integrated apparatus and method |
| CN209669293U (en) * | 2019-01-10 | 2019-11-22 | 成都优材科技有限公司 | Heat-treatment furnace suitable for increasing material manufacturing dental prosthesis |
-
2020
- 2020-09-23 CN CN202011008768.5A patent/CN112170850A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202133271U (en) * | 2011-06-16 | 2012-02-01 | 西北工业大学 | Surface atmosphere heating furnace for laser quick formation |
| DE102012206125A1 (en) * | 2012-04-13 | 2013-10-17 | MTU Aero Engines AG | Process for the production of low-pressure turbine blades made of TiAl |
| CN105499569A (en) * | 2015-12-24 | 2016-04-20 | 华中科技大学 | Active temperature field regulating and controlling system for manufacturing high-energy beam reinforced material and control method for active temperature field regulating and controlling system |
| CN106180719A (en) * | 2016-09-27 | 2016-12-07 | 飞而康快速制造科技有限责任公司 | Selective laser fusing increases IN718 component, system, heat treatment method and the device that material manufactures |
| CN108115129A (en) * | 2016-11-29 | 2018-06-05 | 中国兵器装备研究院 | A kind of 3D printing room with thermal treatment bin |
| CN108746613A (en) * | 2018-05-31 | 2018-11-06 | 华中科技大学 | A kind of online heat treatment system of selective laser fusing |
| CN108907198A (en) * | 2018-09-21 | 2018-11-30 | 天津镭明激光科技有限公司 | A kind of increasing material manufacturing laser formation system integrated apparatus and method |
| CN209669293U (en) * | 2019-01-10 | 2019-11-22 | 成都优材科技有限公司 | Heat-treatment furnace suitable for increasing material manufacturing dental prosthesis |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023006738A1 (en) * | 2021-07-28 | 2023-02-02 | Plastiprint 3D LTD. | Method of forming an object by additive manufacturing within a furnace, and furnace for additive manufacture of an object |
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