CN107309428B - Purification system and method for metal 3D printer - Google Patents
Purification system and method for metal 3D printer Download PDFInfo
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- CN107309428B CN107309428B CN201710745457.9A CN201710745457A CN107309428B CN 107309428 B CN107309428 B CN 107309428B CN 201710745457 A CN201710745457 A CN 201710745457A CN 107309428 B CN107309428 B CN 107309428B
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/10—Formation of a green body
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/70—Recycling
- B22F10/77—Recycling of gas
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/70—Gas flow means
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/90—Means for process control, e.g. cameras or sensors
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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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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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
- B22F2201/00—Treatment under specific atmosphere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Automation & Control Theory (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
Abstract
The invention discloses a purification system and a purification method for a metal 3D printer, which comprise a forming chamber, a pressure gauge, an oxygen analyzer, a control system, a gas cylinder, a circulating fan and a purification device, wherein the pressure gauge, the control system and the oxygen analyzer are all connected with the forming chamber, a gas outlet of the gas cylinder is communicated with the forming chamber through an air inlet valve, a gas outlet of the circulating fan is communicated with the forming chamber, a gas outlet of the forming chamber is communicated with air through an exhaust valve, the other gas outlet of the forming chamber is respectively communicated with the purification device and the circulating fan through a purification valve and a circulating valve, and a gas outlet of the purification device is communicated with the circulating fan. The invention can control the oxygen content in the forming chamber to be lower than the preset content, reduces the influence of oxygen on the manufacture of parts and effectively ensures the forming precision and quality of the parts.
Description
Technical Field
The invention relates to the technical field of additive manufacturing, in particular to a purification system and method for a metal 3D printer.
Background
The metal 3D printing technology takes powder as a material, the three-dimensional model is formed by curing and molding the powder through controlling optical fiber laser by a computer, a cutter or a tool clamp is not needed, and the three-dimensional model has the advantages of high molding speed, high precision of a workpiece, high surface quality, wide material application and the like, becomes one of 3D printing technologies which are developed fastest and commercialized successfully at present, is widely applied to prototype manufacturing, performance testing and design verification of products in the fields of molds, automobiles, household appliances, medical treatment, dentistry, jewelry and the like, greatly improves the development speed of new products, reduces the development cost, enhances the market competitiveness of enterprises, and shows wide market prospect.
At present, all metal 3D printers operate in a low-oxygen environment, such as a device without a purification column, the oxygen content can only be controlled to thousands of ppm, if the oxygen content is reduced to dozens, the oxygen content needs to be controlled to be longer, the oxygen content is difficult to maintain to dozens of ppm for a long time, and with the purification column, the oxygen content can be controlled to be within 80ppm for a long time, and the time needed to be controlled to be short, for active metals such as: aluminum alloy, titanium alloy, etc. must print in very low oxygen content and can produce fine quality, and too high oxygen content can appear balling, oxidation, influence part preparation even, and the shaping precision and the quality of part are influenced to the black cigarette that all can appear of oxygen content.
Disclosure of Invention
In order to solve the technical problem, a purification system and a purification method for a metal 3D printer are provided, so that the oxygen content in a forming chamber is reduced, and the forming precision and quality of parts are effectively guaranteed.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a purification system for metal 3D printer, it includes the shaping room, still includes manometer, oxygen branch appearance, control system, gas cylinder, circulating fan and purifier, manometer, control system and oxygen divide the appearance all to link to each other with the shaping room, the gas outlet of gas cylinder pass through the admission valve with the shaping room is linked together, circulating fan's gas outlet with the shaping room is linked together, a shaping room gas outlet is linked together through discharge valve and air, another gas outlet of shaping room communicates with purifier and circulating fan through purge valve and circulating valve respectively, purifier's gas outlet with the circulating fan communicates with.
Preferably, a filter box is communicated between the forming chamber and the purge valve and between the forming chamber and the circulating valve.
Preferably, the control system is a PLC controller.
Preferably, the purification device is a purification column.
In order to achieve the above purpose, the invention also provides another technical scheme: a purification method for a metal 3D printer, the method comprising:
1) firstly, opening an air inlet valve, an air outlet valve and a circulating valve which are communicated with a forming chamber, wherein the other port of the air inlet valve is communicated with an air bottle, and the forming chamber is communicated with a circulating fan through the circulating valve;
2) opening a pressure gauge, an oxygen analyzer and a control system which are connected with the forming chamber, wherein the control system detects the reading of the oxygen analyzer in real time, and closes the exhaust valve and the circulating valve when the reading of the oxygen analyzer reaches a set value for starting the purification device, wherein the control system controls the opening and closing of the air inlet valve and the exhaust valve by controlling the pressure in the forming chamber;
3) opening a purification valve communicated with the forming chamber, communicating the purification device between the purification valve and the circulating fan, when protective gas in the forming chamber passes through the purification device, adsorbing oxygen in the gas by an oxygen scavenger in the purification device, and closing the purification valve when the gas circulated from the purification device into the forming chamber reaches a set value of micro-oxygen content,
4) and opening the circulating valve to obtain purified forming chamber gas.
Preferably, a filter box is communicated between the forming chamber and the purge valve and between the forming chamber and the circulating valve.
Preferably, the control system is a PLC controller.
Preferably, the purification device is a purification column.
Through the technical scheme, the purification system and the purification method for the metal 3D printer have the advantages that the gas in the forming chamber is removed, the deaerated gas is injected into the forming chamber, the oxygen content in the forming chamber is detected in real time in the printing process, the oxygen content is prevented from rising again in the printing process, and therefore the precision and the quality of part forming are effectively guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a purification system for a metal 3D printer as disclosed in an embodiment of the present invention;
fig. 2 is a flowchart of a purification method for a metal 3D printer according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes the embodiments of the present invention in further detail with reference to the schematic drawings.
Referring to fig. 1, a purification system for metal 3D printer, it includes shaping room 1, still includes manometer 2, oxygen branch appearance 3, control system 4, gas cylinder 5, circulating fan 6 and purifier 7, manometer 2, control system 4 and oxygen branch appearance 3 all link to each other with shaping room 1, the gas outlet of gas cylinder 5 pass through admission valve 7 with shaping room 1 is linked together, circulating fan 6 the gas outlet with shaping room 1 is linked together, 1 gas outlet of shaping room is linked together through discharge valve 8 and air, another gas outlet of shaping room 1 is linked together with purifier 7 and circulating fan 6 through purge valve 9 and circulating valve 10 respectively, purifier 7 the gas outlet with circulating fan 6 is linked together.
Wherein, a filter box 11 is communicated between the forming chamber 1 and the purge valve 9 and the circulating valve 10 for filtering the gas in the forming chamber 1.
Specifically, the control system 4 is a PLC controller, and may be other controllers, and is used for controlling the oxygen analyzer and the pressure gauge in real time.
In particular, the purification device 7 is a purification column for removing oxygen or other gas components affecting the formation of the part.
In addition, referring to fig. 2, an embodiment of the present invention further provides a purification method for a metal 3D printer, having the system according to the foregoing embodiment, where the method includes:
s101: firstly, opening an air inlet valve, an air outlet valve and a circulating valve which are communicated with a forming chamber, wherein the other port of the air inlet valve is communicated with an air bottle, and the forming chamber is communicated with a circulating fan through the circulating valve;
s102: opening a pressure gauge, an oxygen analyzer and a control system which are connected with the forming chamber, wherein the control system detects the reading of the oxygen analyzer in real time, and closes the exhaust valve and the circulating valve when the reading of the oxygen analyzer reaches a set value for starting the purification device, wherein the control system controls the opening and closing of the air inlet valve and the exhaust valve by controlling the pressure in the forming chamber;
s103: opening a purification valve communicated with the forming chamber, communicating the purification device between the purification valve and the circulating fan, when protective gas in the forming chamber passes through the purification device, adsorbing oxygen in the gas by an oxygen scavenger in the purification device, and closing the purification valve when the gas circulated from the purification device into the forming chamber reaches a set value of micro-oxygen content,
s104: and opening the circulating valve to obtain purified forming chamber gas.
Wherein, a filter box is communicated among the forming chamber, the purge valve and the circulating valve.
Specifically, the control system is a PLC controller, and can also be other controllers, and is used for controlling the oxygen analyzer and the pressure gauge in real time.
Specifically, the purification device is a purification column used for removing oxygen or other gas components influencing part forming.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (8)
1. A purification system for metal 3D printer, it includes the shaping room, its characterized in that still includes manometer, oxygen and divides appearance, control system, gas cylinder, circulating fan and purifier, manometer, control system and oxygen divide the appearance all to link to each other with the shaping room, the gas outlet of gas cylinder pass through the admission valve with the shaping room is linked together, circulating fan's gas outlet with the shaping room is linked together, a shaping room gas outlet is linked together through discharge valve and air, another gas outlet of shaping room communicates with purifier and circulating fan through purge valve and circulating valve respectively, purifier's gas outlet with the circulating fan communicates with each other.
2. The purification system for metal 3D printers as recited in claim 1, wherein a filter box is further connected between the forming chamber and the purge valve and circulation valve.
3. The purification system for metal 3D printers of claim 1, wherein the control system is a PLC controller.
4. The purification system for a metal 3D printer according to claim 1, wherein the purification device is a purification column.
5. A purification method using the purification system for metal 3D printer of claims 1 to 4, characterized in that the method comprises:
1) firstly, opening an air inlet valve, an air outlet valve and a circulating valve which are communicated with a forming chamber, wherein the other port of the air inlet valve is communicated with an air bottle, and the forming chamber is communicated with a circulating fan through the circulating valve;
2) opening a pressure gauge, an oxygen analyzer and a control system which are connected with the forming chamber, wherein the control system detects the reading of the oxygen analyzer in real time, and closes an exhaust valve and a circulating valve when the reading of the oxygen analyzer reaches a set value for starting the purification device, wherein the control system controls the opening and closing of an air inlet valve and the exhaust valve by controlling the pressure in the forming chamber;
3) opening a purification valve communicated with the forming chamber, communicating the purification device between the purification valve and the circulating fan, when protective gas in the forming chamber passes through the purification device, adsorbing oxygen in the gas by an oxygen scavenger in the purification device, and closing the purification valve when the gas circulated from the purification device into the forming chamber reaches a set value of micro-oxygen content,
4) and opening the circulating valve to obtain purified forming chamber gas.
6. The purification method of the purification system for the metal 3D printer according to claim 5, wherein a filter box is further communicated between the forming chamber and the purge valve and the circulation valve.
7. The purification method of the purification system for the metal 3D printer according to claim 5, wherein the control system is a PLC controller.
8. The purification method of the purification system for the metal 3D printer according to claim 5, wherein the purification device is a purification column.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710745457.9A CN107309428B (en) | 2017-08-26 | 2017-08-26 | Purification system and method for metal 3D printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710745457.9A CN107309428B (en) | 2017-08-26 | 2017-08-26 | Purification system and method for metal 3D printer |
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| Publication Number | Publication Date |
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| CN107309428A CN107309428A (en) | 2017-11-03 |
| CN107309428B true CN107309428B (en) | 2020-02-21 |
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| CN201710745457.9A Active CN107309428B (en) | 2017-08-26 | 2017-08-26 | Purification system and method for metal 3D printer |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746605B (en) * | 2018-06-20 | 2019-12-17 | 西安琦丰光电科技有限公司 | Deoxidizing forming cavity, deoxidizing device and deoxidizing method for molybdenum-silicon-boron material additive manufacturing |
| CN109759585A (en) * | 2018-12-27 | 2019-05-17 | 广东汉邦激光科技有限公司 | 3D printing equipment, monitoring and control method and computer readable storage medium |
| EP3838444A1 (en) * | 2019-12-18 | 2021-06-23 | Linde GmbH | Method and device for removing impurities in additive manufacture using helium and hydrogen gases |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353832A (en) * | 2014-10-24 | 2015-02-18 | 华南理工大学 | Method and equipment of sealed chamber atmosphere deoxygenization and circulating purification for metal 3D printer |
| CN104550951A (en) * | 2014-12-11 | 2015-04-29 | 广东汉唐量子光电科技有限公司 | Gas protecting system of metal powder laser quick forming machine |
| CN207086905U (en) * | 2017-08-26 | 2018-03-13 | 吴江中瑞机电科技有限公司 | Purification system for metal 3D printer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10316712B2 (en) * | 2015-12-18 | 2019-06-11 | Exxonmobil Research And Engineering Company | Lubricant compositions for surface finishing of materials |
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- 2017-08-26 CN CN201710745457.9A patent/CN107309428B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353832A (en) * | 2014-10-24 | 2015-02-18 | 华南理工大学 | Method and equipment of sealed chamber atmosphere deoxygenization and circulating purification for metal 3D printer |
| CN104550951A (en) * | 2014-12-11 | 2015-04-29 | 广东汉唐量子光电科技有限公司 | Gas protecting system of metal powder laser quick forming machine |
| CN207086905U (en) * | 2017-08-26 | 2018-03-13 | 吴江中瑞机电科技有限公司 | Purification system for metal 3D printer |
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Address after: 215223 No. 13 Tongan West Road, Wujiang District, Jiangsu, Suzhou Applicant after: Suzhou Zhong Rui Zhi Chuang 3D Polytron Technologies Inc Address before: 215223 No. 13 Tongan West Road, Wujiang District, Jiangsu, Suzhou Applicant before: Z Rapid Technologies Co., Ltd. |
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