CN112247161A - Protective gas treatment device for material-increasing and material-decreasing composite manufacturing equipment - Google Patents
Protective gas treatment device for material-increasing and material-decreasing composite manufacturing equipment Download PDFInfo
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- CN112247161A CN112247161A CN202011024313.2A CN202011024313A CN112247161A CN 112247161 A CN112247161 A CN 112247161A CN 202011024313 A CN202011024313 A CN 202011024313A CN 112247161 A CN112247161 A CN 112247161A
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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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
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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
- B33Y10/00—Processes of additive manufacturing
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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
- 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
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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
- B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
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Abstract
A protective gas treatment device for material-increasing and material-decreasing composite manufacturing equipment comprises a gas-liquid-gas conversion module, wherein the gas-liquid-gas conversion module comprises a gas liquefaction system and a liquid-gas conversion device, the gas liquefaction system recovers and stores gas in a sealed box body, the gas-liquid-gas conversion module comprises a gas filter, a gas purifier and a gas liquefaction device which are sequentially connected in series, the liquid-gas conversion device comprises a vaporizer, a gas control unit and a cold air device which are sequentially connected in series, the vaporizer is connected with the output end of the gas liquefaction device, and the cold air device outputs the cold air device to a processing position in the sealed box body. The invention realizes the complete circulation of cooling gas in the material increasing and decreasing composite manufacturing process through the gas liquefaction system and the liquid-gas conversion device of the gas-liquid-gas conversion module, avoids the principle side effect generated in the material increasing and decreasing composite manufacturing process by the traditional cutting fluid cooling mode, and enhances the cooling and lubricating effect of workpieces during processing.
Description
Technical Field
The invention belongs to the field of additive manufacturing, and particularly relates to a protective gas treatment device for additive and subtractive composite manufacturing equipment.
Background
The material-increasing and material-decreasing composite manufacturing technology is a rapid direct forming technology formed based on material-increasing manufacturing and material-decreasing manufacturing processes, the technology takes common advantages of the material-increasing manufacturing technology and the material-decreasing manufacturing technology into account, so that mechanical parts with complex structures, compact structures, high shape precision and high surface quality can be rapidly and directly obtained, the material-increasing and material-decreasing composite manufacturing of metal materials is developed more thoroughly, and the performance requirements of industrial high-precision fields such as aerospace, intelligent manufacturing and the like on precision parts are met.
In the process of the material-increasing and material-decreasing composite manufacturing process, in order to integrally improve the forming efficiency of the part and ensure that the part has good surface quality, a forming strategy of 'increasing and decreasing alternately' is generally adopted. The forming process is usually carried out in a sealed box body environment, the material increase process has strict requirements on elements related to the sealed environment, for example, the work of material increase and decrease composite manufacturing equipment based on laser melting deposition (SLM) + milling not only needs the protective environment of an argon atmosphere, but also needs to strictly control the water and oxygen levels inside a forming chamber to ensure the forming quality of parts, but the cooling and lubricating mode in the traditional material decrease cutting process usually carries out cooling and lubricating by using a wet medium mainly comprising cutting fluid and the like, and when the cutting fluid contacts a cutting part with higher temperature, a layer of steam film is quickly formed to block the direct contact of the subsequent cooling fluid with a cutting area, so that the cooling and lubricating effect is greatly weakened; in addition, the traditional cooling and lubricating mode is easy to form cooling medium-related residues on the machined surface of the part, which can have uncertain influence on the subsequent part additive process; more importantly, in general, after the additive forming is completed, the argon gas in the sealed box body is released into the atmosphere, so that local air pollution is caused, resource waste is caused, and the manufacturing cost is increased. Based on the analysis, the traditional cutting fluid cooling and lubricating mode is difficult to adapt to the process requirements of the metal additive and subtractive material composite manufacturing process. Therefore, the development of a device for recovering, storing and recycling protective gas such as argon based on the material increase and decrease composite manufacturing equipment has positive engineering application value.
Disclosure of Invention
The invention aims to solve the problem of environmental gas treatment in the material increasing and decreasing process in the prior art, and provides a protective gas treatment device for material increasing and decreasing composite manufacturing equipment, which can effectively avoid the influence of the traditional cooling and lubricating mode on the atmosphere environment in a sealed box body in the material increasing and decreasing composite manufacturing process, can well realize the cooling and lubricating effect in the material decreasing process, and is helpful for controlling parts not to be oxidized in the forming process.
In order to achieve the purpose, the invention has the following technical scheme:
a protective gas treatment device for material-increasing and material-decreasing composite manufacturing equipment comprises a gas-liquid-gas conversion module, wherein the gas-liquid-gas conversion module comprises a gas liquefaction system and a liquid-gas conversion device, the gas liquefaction system recovers and stores gas in a sealed box body, the gas-liquid-gas conversion module comprises a gas filter, a gas purifier and a gas liquefaction device which are sequentially connected in series, the liquid-gas conversion device comprises a vaporizer, a gas control unit and a cold air device which are sequentially connected in series, the vaporizer is connected with the output end of the gas liquefaction device, and the cold air device outputs the cold air device to a processing position in the sealed box body.
Preferably, the gas control unit and the cold air device are connected with the control display module.
Preferably, the sealed box body is connected with the air source and emptying module, the air source and emptying module comprises an air source device and an emptying device, the air source device and the emptying device are both connected with the control display module, the air source device is filled with protective gas in the sealed box body, and the emptying device is used for adjusting the pressure of the protective gas in the sealed box body.
Preferably, the inside sensor module that sets up of sealed box, sensor module includes water sensor, oxygen sensor, pressure sensor and temperature sensor, sensor module links to each other with control display module, detects and feeds back water, oxygen content, pressure and temperature state to control display module through sensor module real-time.
Preferably, the sealed box connect gaseous purification module, gaseous purification module links to each other with control display module, and gaseous purification module retrieves the inside gas of storing sealed box to through drying, adsorption mechanism, reduce the water, the oxygen level of retrieving gas, and with the gaseous input of after purifying to the sealed box in, accomplish gaseous purification.
Preferably, the device connection modes of the gas-liquid-gas conversion module are all pipeline connection, and the sealing mode is integral sealing or pipeline sealing.
Preferably, the gas filter performs primary filtration, intermediate-efficiency filtration and high-efficiency filtration on the gas, the primary filtration is used for filtering larger particles in metal dust and smoke dust, the intermediate-efficiency filtration is used for completing the supplementary filtration of the primary filtration, and the high-efficiency filtration reaches the H14 standard; the gas purifier is internally provided with a partition wall containing a plurality of layers of zeolite molecular sieves.
Preferably, the gas liquefaction device includes compressor, heat exchanger, joule-thomson throttle relief valve and reservoir, the compressor be used for obtaining the required energy of circulation for the gas pressurization, the pressurized gas forms heat exchange with the refluence gas in the heat exchanger and obtains the initial cooling, joule-thomson throttle relief valve passes through secondary cooling and turns into gas liquid and carries to the reservoir, and the gas that does not reach liquid lets in the heat exchanger again, and the energy increases after the heat exchanger absorbs heat, gets into the compressor again as make-up gas.
Preferably, the vaporizer converts the liquid medium into a gaseous state by means of an air bath, and the air flows in the opposite direction; the gas control unit performs uniform distribution optimization control on gas; the cold air device cools down, makes low temperature gas export with appointed flow and temperature.
Preferably, the gas control unit is provided with a pressure regulating valve for regulating the pressure or flow of the outlet gas, and the pressure regulating valve can control the on-off of the gas.
Compared with the prior art, the invention has the following beneficial effects: the gas liquefaction system and the liquid-gas conversion device of the gas-liquid-gas conversion module realize complete circulation of cooling gas in the material increasing and decreasing composite manufacturing process, avoid the principle side effect generated in the material increasing and decreasing composite manufacturing process by the traditional cutting fluid cooling mode, enhance the cooling and lubricating effect of workpieces during processing, and eliminate the influence on the water and oxygen level in the sealed box body due to processing and cooling in principle due to the fact that the circulating cooling gas source is used for self-sealing the inside of the box body. Compared with the prior similar device, the device can theoretically and completely realize the recovery, storage and cyclic utilization of the protective gas in the sealed box body, avoids the phenomena of inert gas pollution, resource waste and the like caused by the fact that the protective gas is directly discharged in the air, and has obvious and positive engineering application value.
Furthermore, the display of the control display module is used for displaying the information of the related data in the sealed box body, the working conditions of the gas source and evacuation module, the gas purification module and the gas-liquid-gas conversion module, the system working time and the like detected by the sensor module, and the operating panel is used for controlling the working states of the gas source and evacuation module, the gas purification module and the gas-liquid-gas conversion module, so that the working environment in the sealed box body can be conveniently and dynamically mastered in real time, and the operation process is simplified.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;
FIG. 2 is a schematic diagram of the gas liquefaction train of the present invention;
FIG. 3 is a schematic view of the liquid-gas conversion apparatus of the present invention;
FIG. 4 is a schematic view of the construction of the gas filter of the present invention;
FIG. 5 is a schematic diagram of the gas purifier of the present invention;
FIG. 6 is a schematic diagram of the operation of the gas liquefaction plant of the present invention;
fig. 7 is a schematic diagram of the operating principle of the vaporizer of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, 2 and 3, an embodiment of the protective gas processing apparatus for additive and subtractive composite manufacturing equipment according to the present invention includes a control display module 1, a sensor module 2, a gas source and evacuation module 3, a gas purification module 4 and a gas-liquid-gas conversion module 5. The control display module 1 comprises a display 11 and an operation panel 12, the display 11 is used for displaying relevant data inside the sealed box body, detected by the sensor module 2, information such as working conditions of the gas source and evacuation module 3, the gas purification module 4 and the gas-liquid-gas conversion module 5, system working time and the like, and the operation panel 12 is used for controlling working states of the gas source and evacuation module 3, the gas purification module 4 and the gas-liquid-gas conversion module 5. When the gas pressure regulating device works, a user starts the control display module 1, the gas source and emptying module 3, the gas purification module 4 and the gas-liquid-gas conversion module 5, at the moment, the gas source and emptying module 3 starts to exchange gas in the sealed box body, the internal gas pressure value is regulated and controlled by the gas source and emptying module 3, and the user can regulate the internal gas pressure of the sealed box body by regulating the output gas flow of the emptying module 32. The air source and the emptying module 3 are connected with the control display module 1, the numerical values of the working conditions of the air source and the emptying module are displayed on a display 11 carried by the control display module 1 in real time, and a user can check the working state of the module through the display 11 in real time. The material increasing and decreasing composite manufacturing process has strict requirements on the forming environment atmosphere, and the device is helpful for a user to effectively master the forming environment atmosphere pressure.
As shown in fig. 1, a sensor module 2 is installed inside the sealed box body, and includes a water sensor 21, an oxygen sensor 22, a pressure sensor 23 and a temperature sensor 24, the water sensor 21 is used for monitoring the water content in the forming environment in real time, the oxygen sensor 22 is used for monitoring the oxygen content in the forming environment in real time, the material adding and reducing composite manufacturing process of the part has strict requirements on the atmosphere of the forming environment, the requirements on the water oxygen level are especially strict, after the air source and evacuation module 3 starts to work, the monitoring data are required to be transmitted to the control display module 1 by the water sensor 21 and the oxygen sensor 22 and displayed on the display 11, so that a user can check whether the water oxygen level in the sealed box body meets the requirements, and thus a basis is provided for deciding whether to start the part. The pressure sensor 23 is used for monitoring the forming environment atmosphere pressure in real time, the temperature sensor 24 is used for monitoring the whole atmosphere temperature in the sealed box body in real time, and the pressure sensor and the temperature sensor are connected with the control display module 1 and display monitoring data on the display 11 so that a user can master the forming environment atmosphere state.
As shown in fig. 1, a gas purification module 4 is installed outside the sealed box of the present invention, and after a user starts the gas source and evacuation module 3, the water and oxygen components in the atmosphere environment inside the sealed box are adsorbed and filtered based on the air circulation flow process, so as to reduce the atmosphere water and oxygen level in the sealed box, that is, to meet the requirements of the part forming conditions. The gas purification module 4 is connected with the control display module 1 and displays the working condition data on the display 11 for a user to master the working state of the equipment.
As shown in fig. 1, 2 and 3, the gas-liquid-gas conversion module 5 includes a gas liquefaction module 51 and a liquid-gas conversion module 52, and all the modules are connected by pipes. The user activates the gas-liquid-gas conversion module 5, the gas liquefaction module 51 and the liquid-gas conversion module 52 to start operating at the same time. The gas liquefaction module 51 is formed by serially connecting a gas filter 511, a gas purifier 512 and a gas liquefaction device 513, wherein the gas filter 511 receives gas in the sealed box body through a pipeline to filter particles such as dust and the like, the filtered gas is transmitted to the gas purifier 512, the gas is purified and then enters the gas liquefaction device 513 to be converted into a liquid state, the liquid state of the gas obtained here is a low-temperature state and is suitable for storage, and the gas obtained here can be collected and stored to be used as a standby cooling medium.
As shown in fig. 4, considering the characteristics of the part additive forming process, the main impurities of the argon atmosphere inside the sealed box are metal dust and a small amount of metal smoke dust, so the gas filter 511 mainly filters the metal dust and smoke dust, and the filtering process includes three main steps, namely primary filtering, intermediate filtering and high-efficiency filtering, according to the airflow direction of the recovered and stored argon gas, and the primary filtering mainly filters the larger particles in the metal dust and smoke dust; the intermediate-efficiency filtering step further improves the filtering grade, namely smaller powder and smoke dust particles are filtered, and meanwhile, the supplementary filtering of the primary filtering step is completed; argon gas after primary and intermediate filtration enters a high-efficiency filtration step, and the filtration efficiency of the high-efficiency filtration step can reach the standard of H14.
As shown in fig. 2, the input of the gas purifier 512 is the argon stream filtered by the gas filter 511. Considering that the forming process of metal is a process of melting and cooling metal powder by using a high-energy laser beam, in which there are both physical processes and certain chemical reaction processes, the argon atmosphere environment inside the sealed box body is actually a complex atmosphere environment in which a small amount of one or more of water vapor, oxygen, nitrogen, oxynitride and oxycarbide is included. A partition wall containing a plurality of layers of zeolite molecular sieves is arranged in the gas purifier 512, the zeolite molecular sieves have the effects of efficient dehydration, physical adsorption, chemical catalysis and the like, and the dehydration characteristics are utilized to effectively reduce or even eliminate water vapor in the argon flow; the physical adsorption process mainly adsorbs and eliminates one or more of oxynitride and oxycarbide in the argon flow; the chemical catalysis effect of the composite material can be used for effectively absorbing oxygen, nitrogen and the like in the argon flow. As shown in fig. 5, the gas purifier 512 includes two or more banks filled with zeolite molecular sieves, and the banks have the same function, and the replacement period of the first bank is short. The second dividing wall complements the effectiveness of the first dividing wall to ensure that the argon gas stream output by the gas purifier 512 is of sufficient purity.
As shown in fig. 2, the input end of the gas liquefaction device 513 is the argon gas stream purified by the gas purifier 512, and the argon gas stream purified by the gas filter 511 and the gas purifier 512 is considered to have reached the standard of the use and storage grade of argon gas. As known from the nature of gas, there are two general ways of transforming gas from gas to liquid, namely, pressurizing and cooling.
As shown in fig. 6, the conversion of the argon gas stream into a circulating liquefied stream can be effectively realized based on the gas circulating liquefaction principle of a simple linde-hanpson system. The liquefaction process of the argon gas flow is briefly described below, the filtered and purified argon gas flow firstly enters a compressor, the compressor works by taking the piston movement of a push rod in a sealed inner cavity of the compressor as main movement, the pressurized argon gas obtains energy required by circulation, then the argon gas passes through a heat exchanger and forms heat exchange with reflux gas to obtain initial cooling, and then the argon gas flow passes through a Joule-Thomson throttling and reducing valve (hereinafter represented by a J-T valve) to be further cooled, the heat is reduced and certain potential energy is kept, and the argon gas is converted into liquid argon to enter and be stored in a liquid storage device which is a high-strength heat insulation steel cylinder. Furthermore, the argon gas flow which passes through the J-T valve and does not reach the liquid state partially returns to the heat exchanger due to certain potential energy, the energy is increased after the heat is absorbed by the heat exchanger, and the argon gas flow is used as supplementary gas to enter the compressor again, so that the circulating liquefaction of the argon gas flow is realized.
Because the interior of the liquid storage device for storing the liquid argon is usually in a high-pressure state, a pipeline with a cut-off valve and a pressure reducing valve is arranged below the liquid storage device, and the safe storage and the efficient utilization of the liquid argon can be ensured by operating the cut-off valve and the pressure reducing valve.
As shown in fig. 1, 2, and 3, the low-temperature liquid medium is transported through a pipeline to enter the liquid-gas conversion module 52, the liquid-gas conversion module 52 is formed by serially connecting a vaporizer 521, a gas control unit 522, and a cold air device 523, the vaporizer 521 converts the liquid medium into a gaseous state, the gaseous state is optimally controlled by the gas control unit 522 to be uniformly distributed, and finally the cold air device 523 outputs the low-temperature gas to a forming position at a specified flow rate and temperature, so that the gas-liquid-gas conversion and utilization process of the circulating cooling medium is completed.
The gas control unit 522 and the cold air device 523 of the present invention are both connected to the control display module 1, and display the working condition data on the display 11 of the control display module 1 for the user to master the working state of the device.
As shown in fig. 7, the vaporizer 521 converts the liquid argon into a gaseous state using an air bath. Liquid argon is subjected to heat exchange with air through a vaporizer cooling fin, so that the liquid argon is vaporized and output, a pressure gauge at an outlet can read the pressure value after gas vaporization, and a safety valve can regulate and control the pressure after gas vaporization, so that the safety problem caused by overhigh pressure after gas vaporization is effectively avoided; furthermore, the air and the liquid argon are arranged in opposite flowing directions, so that the vaporization heat exchange efficiency of the liquid argon is greatly improved.
The gas control unit 522 of the present invention is equipped with a pressure regulating valve for regulating the pressure or flow of the outlet gas, and at the same time has the function of controlling the on-off of the gas, which is convenient to support the demand of the equipment that is ready to be opened.
The cold air device 523 cools the vaporized gas and delivers the low-temperature gas to the processing site through a pipe.
As shown in fig. 1, 2 and 3, the gas-liquid-gas conversion module 5 of the present invention includes a gas liquefaction module 51 and a liquid-gas conversion module 52, and the sealing manner is an integral seal or a pipe seal.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and it should be understood by those skilled in the art that the technical solution can be modified and replaced by a plurality of simple modifications and replacements without departing from the spirit and principle of the present invention, and the modifications and replacements also fall into the protection scope covered by the claims.
Claims (10)
1. A protective gas processing device for material increase and decrease composite manufacturing equipment is characterized in that: the gas-liquid-gas conversion device comprises a gas-liquid-gas conversion module (5), wherein the gas-liquid-gas conversion module (5) comprises a gas liquefaction system (51) and a liquid-gas conversion device (52), the gas liquefaction system (51) recovers and stores gas inside a sealed box body, the gas-liquid-gas conversion device comprises a gas filter (511), a gas purifier (512) and a gas liquefaction device (513) which are sequentially connected in series, the liquid-gas conversion device comprises a vaporizer (521), a gas control unit (522) and a cold air device (523) which are sequentially connected in series, the vaporizer (521) is connected with the output end of the gas liquefaction device (513), and the cold air device (523) outputs the gas to a processing position inside the sealed box body.
2. The shielding gas treatment apparatus for additive and subtractive composite manufacturing equipment according to claim 1, wherein: the gas control unit (522) and the cold air device (524) are connected with the control display module (1).
3. The shielding gas treatment apparatus for the additive/subtractive composite manufacturing apparatus according to claim 2, wherein: the sealing box body is connected with the air source and the emptying module (3), the air source and the emptying module (3) comprise an air source device (31) and an emptying device (32), the air source device (31) and the emptying device (32) are connected with the control display module (1), the air source device (31) is filled with protective gas in the sealing box body, and the emptying device (32) is used for adjusting the pressure of the protective gas in the sealing box body.
4. The shielding gas treatment apparatus for the additive/subtractive composite manufacturing apparatus according to claim 2, wherein: the sealed box inside set up sensor module (2), sensor module (2) include water sensor (21), oxygen sensor (22), pressure sensor (23) and temperature sensor (24), sensor module (2) link to each other with control display module (1), through sensor module (2) real-time detection and to control display module (1) feedback water, oxygen content, pressure and temperature status.
5. The shielding gas treatment apparatus for the additive/subtractive composite manufacturing apparatus according to claim 2, wherein: the sealed box connect gaseous purification module (4), gaseous purification module (4) link to each other with control display module (1), the inside gas of storing sealed box is retrieved in gaseous purification module (4) to through drying, adsorption mechanism, reduce the water, the oxygen level of retrieving gas, and with the gaseous input to the sealed box after purifying, accomplish gaseous purification.
6. The shielding gas treatment apparatus for additive and subtractive composite manufacturing equipment according to claim 1, wherein: the device connection modes of the gas-liquid-gas conversion module (5) are all pipeline connection, and the sealing mode is integral sealing or pipeline sealing.
7. The shielding gas treatment apparatus for additive and subtractive composite manufacturing equipment according to claim 1, wherein: the gas filter (511) performs primary filtration, intermediate-efficiency filtration and high-efficiency filtration on the gas, the primary filtration is used for filtering larger particles in metal dust and smoke dust, the intermediate-efficiency filtration is used for completing the supplementary filtration of the primary filtration, and the high-efficiency filtration reaches the H14 standard;
the gas purifier (512) is internally provided with a partition wall containing a plurality of layers of zeolite molecular sieves.
8. The shielding gas treatment apparatus for additive and subtractive composite manufacturing equipment according to claim 1, wherein: the gas liquefaction device (513) comprises a compressor, a heat exchanger, a Joule-Thomson throttling and reducing valve and a liquid storage device, wherein the compressor is used for pressurizing gas to obtain energy required by circulation, the pressurized gas and the backflow gas form heat exchange in the heat exchanger to obtain initial cooling, the Joule-Thomson throttling and reducing valve converts the gas into liquid through secondary cooling and conveys the liquid to the liquid storage device, the gas which does not reach the liquid state is introduced into the heat exchanger again, the energy is increased after the heat is absorbed by the heat exchanger, and the gas is used as supplementary gas to enter the compressor again.
9. The shielding gas treatment apparatus for additive and subtractive composite manufacturing equipment according to claim 1, wherein: the vaporizer (521) converts the liquid medium into a gaseous state in an air bath mode, and the air flows in the opposite direction; the gas control unit (522) performs uniform distribution optimization control on gas; the cold air device (523) cools down the temperature to output the low-temperature gas at a specified flow rate and temperature.
10. The shielding gas treatment apparatus for the additive/subtractive composite manufacturing apparatus according to claim 1 or 9, wherein: the gas control unit (522) is provided with a pressure regulating valve for regulating the pressure or flow of outlet gas and controls the on-off of the gas.
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| CN202011024313.2A CN112247161A (en) | 2020-09-25 | 2020-09-25 | Protective gas treatment device for material-increasing and material-decreasing composite manufacturing equipment |
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| CN202011024313.2A CN112247161A (en) | 2020-09-25 | 2020-09-25 | Protective gas treatment device for material-increasing and material-decreasing composite manufacturing equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116140768A (en) * | 2022-11-03 | 2023-05-23 | 陕西鼎益科技有限公司 | Metal 3D fuse prints online multidimensional temperature field control system |
| CN116713486A (en) * | 2023-08-07 | 2023-09-08 | 南京联空智能增材研究院有限公司 | Material increasing and decreasing manufacturing device |
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