CN115446422B - Online control system and control method for temperature between arc additive layers - Google Patents
Online control system and control method for temperature between arc additive layers Download PDFInfo
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- CN115446422B CN115446422B CN202211280720.9A CN202211280720A CN115446422B CN 115446422 B CN115446422 B CN 115446422B CN 202211280720 A CN202211280720 A CN 202211280720A CN 115446422 B CN115446422 B CN 115446422B
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- 238000000034 method Methods 0.000 title claims abstract description 46
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- 238000001816 cooling Methods 0.000 claims abstract description 112
- 230000008021 deposition Effects 0.000 claims abstract description 64
- 239000000463 material Substances 0.000 claims abstract description 37
- 239000011229 interlayer Substances 0.000 claims abstract description 22
- 238000001931 thermography Methods 0.000 claims abstract description 14
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- 230000030279 gene silencing Effects 0.000 claims description 8
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- 239000011261 inert gas Substances 0.000 claims description 6
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- 229910045601 alloy Inorganic materials 0.000 claims description 4
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- 238000009529 body temperature measurement Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 4
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Abstract
The invention relates to an arc material-increasing interlayer temperature on-line control system and a control method, which belong to the field of arc material-increasing, wherein an eddy-current cooling pipe is used for cooling a deposition layer in the process of printing material-increasing parts layer by layer, the cooling effect of the eddy-current cooling pipe is strong, and meanwhile, the eddy-current cooling pipe adopts a magnetic attraction fixing mode, so that the flexibility is good, the installation is convenient, and the deposition manufacturing of parts manufactured by different materials can be cooled. The microcomputer of the invention adjusts the layer deposition time of the deposition layer according to the infrared thermal imaging detected by the temperature detector, assists in reducing the temperature of the deposition layer, adjusts the cooling air flow of the vortex cooling pipe according to the molten pool image of the high-speed camera, and ensures the deposition quality of the material-adding parts.
Description
Technical Field
The invention relates to the field of arc material increase, in particular to an online control system and a control method for temperature between arc material increase layers.
Background
The traditional arc material-increasing system has the advantages that the heat input is 2-3 times higher than that of laser material-increasing equipment due to the high-temperature effect of an arc, so that overheating is extremely easy to generate in the arc material-increasing process, particularly, metal with good fluidity such as aluminum alloy is overheated, a low-position deposition layer is melted to cause material-increasing parts to be scrapped, on the other hand, the arc material-increasing process has the advantages that the heat input is overlarge, the deposition layer is slowly cooled, coarse columnar crystals are easy to generate in the deposition layer, and the mechanical property of the deposition layer is affected negatively, such as anisotropy. The Chinese patent application number is CN201511028009.4, which discloses an invention of inert gas synchronous auxiliary cooling, the inert gas cost is high, an inert gas outlet is relatively fixed with a laser material adding system, the installation mode is not suitable for manufacturing complex parts, and the laser head accessory is easy to interfere with a deposition part. The chinese patent application No. CN201580064946.7 discloses a cooling gas nozzle for nonmetallic materials, unlike arc additive, because arc additive printing metal requires a protective gas to prevent oxidation, and cooling gas is required to prevent oxidation of the deposited layer during cooling. Therefore, the prior art has the problems of high heat input of arc additive deposition, low forming precision, low deposition efficiency, inapplicability to deposition manufacturing of most parts and the like.
Disclosure of Invention
The invention aims to provide an arc additive interlayer temperature on-line control system and a control method, which are used for improving an arc additive cooling effect and are suitable for deposition manufacturing of different additive manufactured parts.
In order to achieve the above object, the present invention provides the following solutions:
an arc additive interlayer temperature on-line control system, the system comprising: the device comprises an eddy cooling tube, a temperature detector, a high-speed camera and a microcomputer;
The electric arc material adding equipment is used for printing the material adding parts layer by layer in a layer-by-layer laminating mode;
The eddy cooling pipe is fixed in a magnetic attraction mode, a cooling gas spraying end of the eddy cooling pipe is aligned to the additive part, and the eddy cooling pipe is used for spraying cooling gas to a printed deposition layer in the process of printing the additive part layer by layer to cool the deposition layer; the deposition layers are deposited layer by layer to form an additive part;
The temperature detector is connected with the microcomputer; the temperature detector is used for acquiring infrared thermal imaging of a deposition layer in real time in the process of printing the additive part layer by layer; the microcomputer is used for adjusting the layer deposition time of the deposition layer according to the infrared thermal imaging, so that the interlayer temperature of the deposition layer is lower than a temperature threshold;
the high-speed camera is connected with the microcomputer and is used for acquiring a molten pool image in real time in the process of printing the additive parts layer by layer; the microcomputer is used for adjusting the cooling air flow of the vortex cooling pipe according to the molten pool image so as to maintain the shape of the molten pool.
Optionally, the vortex cooling tube comprises: the device comprises a magnetic base, an air guide support, a three-way pipe, an air pipe, a vortex pipe, a silencing nozzle, a main pipe, a flow divider and a plurality of spray pipes;
The air guide support is internally of a hollow structure, one end of the air guide support is fixed on the magnetic base, the other end of the air guide support is communicated with the first pipe joint of the three-way pipe, and the middle part of the air guide support is communicated with the air pipe;
the second pipe joint of the three-way pipe is connected with one end of the vortex tube, and the other end of the vortex tube is connected with the silencing nozzle;
the third pipe joint of the three-way pipe is connected with one end of the main pipe, and the other end of the main pipe is connected with the plurality of spray pipes through the flow divider;
The air pipe is used for introducing normal-temperature compressed air into the vortex tube through the air guide support and the three-way pipe by utilizing the air compressor; the inside of the vortex tube is provided with a vortex chamber, and the vortex tube is used for converting the normal-temperature compressed air into high-temperature gas and cooling gas through vortex conversion after the normal-temperature compressed air enters the vortex chamber, the high-temperature gas is sprayed out from the silencing nozzle, and the cooling gas is sprayed out from the plurality of spray pipes sequentially through the three-way pipe, the main pipe and the flow divider.
Optionally, each of the nozzles comprises: branch pipes and nozzles;
one end of the branch pipe is connected with the flow divider, and the other end of the branch pipe is connected with the nozzle.
Optionally, the materials of the nozzle and the branch pipe are nickel-based alloy GH4043;
All the nozzles are arranged in a straight line, the distance between every two adjacent nozzles is 10mm, the straight line distance between each nozzle and the additive part is 20mm, and the included angle between the spraying direction of each nozzle and the height direction of the additive part is 20 degrees.
Optionally, the system further comprises: the device comprises a working platform, an electric arc material adding substrate, a water cooling substrate and a water cooling box;
the water-cooling base plate is positioned on the working platform, and the magnetic base is adsorbed on the working platform; the arc material adding substrate is arranged on the water-cooling substrate; printing additive parts layer by layer on the arc additive substrate;
the water cooling base plate is connected with the water cooling box, the water cooling box provides circulating cooling water for the cooling base plate, and the cooling base plate is used for continuously cooling the arc material adding base plate in the arc material adding process.
Optionally, the arc additive device includes: an electric arc welder power supply, a welding gun and a protective gas cylinder;
the electric arc welder power is connected with the welder electricity, and the protection gas cylinder is used for providing inert gas protection welder.
Optionally, the compressed air pressure of the vortex cooling pipe is 6.9Bar, the refrigerating flow is 1410SLPM, and the refrigerating capacity is 857Kcal/hr.
Optionally, the temperature monitor is a thermal infrared imager, imaging pixels of the thermal infrared imager are 120 x 120, and the temperature measuring range is 100-500 ℃.
An arc additive interlayer temperature on-line control method, which is applied to the arc additive interlayer temperature on-line control system, comprises the following steps:
starting an electric arc material adding device to perform material adding work, and opening the vortex cooling pipe when printing to a 6 th deposition layer by layer;
In the process of printing the additive parts layer by layer, acquiring infrared thermal imaging and molten pool images of a deposition layer in real time;
If the layer-by-layer temperature of the deposition layer displayed on the infrared thermal imaging is greater than a temperature threshold, increasing the deposition time interval of each layer to 90s;
if the arc is shown to drift unstably on the bath image, the cooling air flow of the vortex cooling tube is reduced to 70% of the current cooling air flow.
Optionally, the starting arc material adding device performs material adding work, and before the starting arc material adding device further includes:
and installing the arc material-adding substrate on the water-cooling substrate, opening the water-cooling box, and simultaneously starting a microcomputer, a high-speed camera and a temperature detector.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
The invention discloses an arc material-increasing interlayer temperature on-line control system and a control method, wherein an eddy current cooling pipe is used for cooling a deposition layer in the process of printing material-increasing parts layer by layer, the cooling effect of the eddy current cooling pipe is strong, meanwhile, the eddy current cooling pipe adopts a magnetic attraction fixing mode, the flexibility is good, the installation is convenient, and the deposition and the manufacture of different material-increasing manufacturing parts can be cooled.
The microcomputer of the invention adjusts the layer deposition time of the deposition layer according to the infrared thermal imaging detected by the temperature detector, assists in reducing the temperature of the deposition layer, adjusts the cooling air flow of the vortex cooling pipe according to the molten pool image of the high-speed camera, and ensures the deposition quality of the material-adding parts.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an online control system for temperature between arc additive layers according to an embodiment of the present invention;
FIG. 2 is a top view of a vortex cooling tube according to an embodiment of the present invention;
FIG. 3 is a side view of a vortex cooling tube provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of a positional relationship of an arc additive substrate according to an embodiment of the present invention;
FIG. 5 is a flowchart of an online control method for temperature between arc additive layers according to an embodiment of the present invention;
FIG. 6 is a comparative diagram of cooling grain refinement of an eddy current cooling tube according to an embodiment of the invention;
FIG. 7 is a graph showing a comparison of the forming accuracy of the vortex cooling tube according to the embodiment of the present invention.
Symbol description: the device comprises a 1-vortex cooling tube, a 2-material adding part, a 3-arc material adding substrate, a 4-working platform, a 5-protection gas cylinder, a 6-welding gun, a 7-high speed camera, an 8-temperature detector, a 9-water cooling box, a 10-water cooling substrate, a 11-arc welder power supply, a 12-microcomputer, a 101-vortex tube, a 102-silencing nozzle, a 103-magnetic base, a 104-diverter, a 105-branch tube, a 106-main tube, a 107-nozzle, a 108-gas tube, a 109-gas guide support and a 110-three-way tube.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an arc additive interlayer temperature on-line control system and a control method, which are used for improving an arc additive cooling effect and are suitable for deposition manufacturing of different additive manufactured parts.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides an arc additive interlayer temperature on-line control system, as shown in figure 1, comprising: an eddy current cooling tube 1, a temperature detector 8, a high speed camera 7 and a microcomputer 12. The arc additive device is used for printing the additive parts 2 layer by layer in a layer-by-layer laminating manner. The eddy current cooling pipe 1 is fixed in a magnetic attraction mode, a cooling gas spraying end of the eddy current cooling pipe 1 is aligned to the additive part 2, and the eddy current cooling pipe 1 is used for spraying cooling gas to a printed deposition layer in the process of printing the additive part 2 layer by layer to cool the deposition layer. The temperature detector 8 is connected with the microcomputer 12; the temperature detector 8 is used for acquiring infrared thermal imaging of a deposition layer in real time in the process of printing the additive part 2 layer by layer; the microcomputer 12 is configured to adjust a layer deposition time of the deposited layer according to the infrared thermal imaging such that an interlayer temperature of the deposited layer is lower than a temperature threshold. The high-speed camera 7 is connected with the microcomputer 12, and the high-speed camera 7 is used for acquiring a molten pool image in real time in the process of printing the additive part 2 layer by layer; the microcomputer 12 is used for adjusting the cooling air flow of the vortex cooling pipe 1 according to the molten pool image so as to form a molten pool shape, thereby maintaining the deposition quality of the additive part 2. The arc additive apparatus prints each layer when printing the additive part 2, known as a deposited layer.
The arc additive prints parts layer by layer through the welding gun 6 according to the thought of layer by layer superposition, in the printing process, the high-speed camera 7 and the temperature detector 8 monitor heat accumulation and forming morphology in the forming process respectively, the high-speed camera 7 and the temperature detector 8 are connected with the microcomputer 12, and image data of the high-speed camera 7 and the temperature detector 8 are displayed on the microcomputer 12.
The invention provides the method for controlling the temperature of the deposition layer by adopting the vortex cooling system in the field of additive manufacturing, the vortex cooling pipe 1 has strong cooling effect, the method for fixing by magnetic attraction is convenient and flexible to install and has good flexibility, and the deposition manufacturing can be carried out on different additive manufacturing parts.
The high-speed camera 7 is a digital high-speed camera i-speed7, the shooting speed is 7200FPS, the recording time is 3s each time, and the recording is completed and stored on the microcomputer 12 and can be called and checked by the microcomputer 12 at any time. The temperature monitor is an infrared thermal imager, the imaging pixels of the infrared thermal imager are 120 x 120, and the temperature measuring range is 100-500 ℃.
The following describes in detail the composition of the arc additive interlayer temperature on-line control system with reference to fig. 1 to 4.
Fig. 2 is a top view of a vortex cooling tube 1 provided by an embodiment of the present invention, and fig. 3 is a side view of the vortex cooling tube 1 provided by the embodiment of the present invention. The vortex cooling pipe 1 includes: magnetic base 103, gas guide bracket 109, tee 110, gas tube 108, vortex tube 101, silencer nozzle 102, main tube 106, splitter 104, and a plurality of nozzles. The inside of the air guide supporting seat 109 is of a hollow structure, one end of the air guide supporting seat 109 is fixed on the magnetic base 103, the other end of the air guide supporting seat 109 is communicated with a first pipe joint of the three-way pipe 110, the middle part of the air guide supporting seat 109 is communicated with the air pipe 108 (an opening in the middle of the air guide supporting seat 109 is connected with the air pipe 108). The second pipe joint of the tee pipe 110 is connected with one end of the vortex tube 101, and the other end of the vortex tube 101 is connected with the silencing nozzle 102. A third pipe joint of tee 110 is connected to one end of main pipe 106, and the other end of main pipe 106 is connected to a plurality of nozzles through splitter 104. The air pipe 108 is used for introducing normal-temperature compressed air into the vortex tube 101 through the air guide support 109 and the three-way pipe 110 by utilizing an air compressor; the vortex tube 101 is provided with a vortex chamber inside, and the vortex tube 101 is used for converting the normal-temperature compressed air into high-temperature gas and cooling gas through vortex conversion after the normal-temperature compressed air enters the vortex chamber, the high-temperature gas is sprayed out from the silencing nozzle 102, and the cooling gas is sprayed out from a plurality of spray pipes sequentially through the tee pipe 110, the main pipe 106 and the splitter 104. Preferably, the air tube 108 is a high pressure air tube. The highest daily air temperature is at or above 35 c and the normal temperature is also known as normal temperature or room temperature, which is generally defined as 25 c.
Fig. 2 shows 4 nozzles. Wherein each nozzle comprises: branch pipe 105 and nozzle 107. One end of the branch pipe 105 is connected to the flow divider 104, and the other end of the branch pipe 105 is connected to the nozzle 107. The flow divider 104 divides the cooling gas sent from the main pipe 106 into 4 parts and sprays the 4 parts in parallel from the nozzles 107 of the four branch pipes 105, the nozzles 107 are in a straight line shape, and the arrangement mode of the nozzles 107 is in a straight line shape. In order to uniformly and continuously cool the additive part to be cooled, the distance between each nozzle 107 is 10mm, and the linear distance between each nozzle 107 and the additive part 2 is 20mm, so as to prevent the surface of each nozzle 107 from being ablated due to excessive arc heat in the process of adding materials. In order to prevent the cooling air flow from affecting the arc stability during the additive process, the injection direction of the nozzle 107 is at an angle of 20 ° to the height direction of the additive part 2.
The compressed air pressure required by the vortex cooling tube 1 was 6.9Bar, the refrigerating flow was 1410SLPM, and the refrigerating capacity was 857Kcal/hr.
To increase the heat resistance of the manifold 105 and the nozzles 107 and to increase the system stability, the materials of the nozzles 107 and the manifold 105 are both nickel-based alloys GH4043.
To ensure that the printing temperature is kept low, the deposited layer temperature is monitored by the temperature detector 8, and when the interlayer temperature exceeds 90 ℃, the deposition time interval per layer is increased by 90s.
In one example, the arc additive interlayer temperature on-line control system further comprises: the electric arc material-increasing base plate 3, the water-cooling base plate 10 and the water-cooling box 9 are arranged on the working platform 4. The water-cooled base plate 10 is located on the working platform 4, and the magnetic base 103 is adsorbed on the working platform 4. As shown in fig. 4, the arc additive substrate 3 is disposed on the water-cooled substrate 10, and the additive parts 2 are printed layer by layer on the arc additive substrate 3. The water-cooling base plate 10 is connected with the water-cooling box 9 through a water supply pipeline, the water-cooling box 9 provides circulating cooling water for the cooling base plate, and the cooling base plate is used for continuously cooling the arc material-adding base plate 3 in the arc material-adding process.
The arc additive apparatus includes: an electric arc welder power source 11, a welding gun 6 and a protective gas cylinder 5. The electric arc welder power supply 11 is electrically connected with the welding gun 6, and the protective gas cylinder 5 is used for providing inert gas for protecting the welding gun 6.
The online control system for the temperature between the arc additive layers has the beneficial effects that:
(1) The eddy current cooling system is adopted to control the temperature of the deposition layer in the field of additive manufacturing for the first time, the eddy current cooling pipe is strong in cooling effect, the magnetic attraction fixing mode is adopted, the flexible installation is convenient, the flexibility is good, and the deposition manufacturing can be carried out on different additive manufacturing parts.
(2) The vortex cooling pipe is high in cooling efficiency, the water-cooled base plate is assisted to cool the deposition piece at the same time, cooling of the deposition piece can be kept all the time in the arc material-increasing process, cooling of the deposition piece is accelerated, deposition efficiency is improved, and low-cost compressed air is adopted, so that the use cost is low.
(3) The nickel-based alloy nozzle is adopted, the vortex cooling pipe is simple in structure and high in stability, and the working stability can be ensured in the severe environment of arc material increase.
(4) The deposited layer is monitored by a temperature detector and a high-speed camera, and the arc additive forming precision is ensured by adjusting the eddy cooling tube.
The embodiment of the invention also provides an arc additive interlayer temperature on-line control method, which is applied to the arc additive interlayer temperature on-line control system, as shown in fig. 5, and comprises the following steps:
And S1, starting an electric arc material adding device to perform material adding work, and opening the vortex cooling pipe when printing to a 6 th deposition layer by layer.
And step S2, in the process of printing the additive parts layer by layer, acquiring infrared thermal imaging and molten pool images of the deposition layer in real time.
And step S3, if the layer-by-layer temperature of the deposition layer displayed on the infrared thermal imaging is greater than a temperature threshold, increasing the deposition time interval of each layer to 90S. Preferably, the temperature threshold is 90 ℃.
And S4, if the arc is displayed to drift and unstably on the molten pool image, reducing the cooling air flow of the vortex cooling pipe to 70% of the current cooling air flow.
And observing the deposition quality at any time until the manufacturing of the additive part is completed.
In step S1, the arc material adding device is turned on to perform material adding operation, and before that, the arc material adding substrate is installed on the water cooling substrate, and the water cooling tank is turned on, and meanwhile, the microcomputer, the high-speed camera and the temperature detector are turned on.
By carrying out mechanical analysis and microscopic analysis on the deposited piece, the deposited layer crystal grains processed by the arc additive interlayer temperature on-line control system are obviously refined, as shown in fig. 6, and the forming precision is obviously improved, as shown in fig. 7. The arrow direction building direction in fig. 6 indicates the deposition direction, and the arrow arc pit in fig. 7 indicates the arc pit.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (7)
1. An arc additive interlayer temperature on-line control method, which is characterized in that the method is applied to an arc additive interlayer temperature on-line control system, and the system comprises: the device comprises an eddy cooling tube, a temperature detector, a high-speed camera and a microcomputer;
The electric arc material adding equipment is used for printing the material adding parts layer by layer in a layer-by-layer laminating mode;
The eddy cooling pipe is fixed in a magnetic attraction mode, a cooling gas spraying end of the eddy cooling pipe is aligned to the additive part, and the eddy cooling pipe is used for spraying cooling gas to a printed deposition layer in the process of printing the additive part layer by layer to cool the deposition layer; the deposition layers are deposited layer by layer to form an additive part;
the vortex cooling pipe comprises a magnetic base and a plurality of spray pipes, each spray pipe comprises a spray nozzle, and the included angle between the spray direction of each spray nozzle and the height direction of the additive part is 20 °;
The system further comprises: the device comprises a working platform, an electric arc material adding substrate, a water cooling substrate and a water cooling box; the water-cooling base plate is positioned on the working platform, and the magnetic base is adsorbed on the working platform; the arc material adding substrate is arranged on the water-cooling substrate; printing additive parts layer by layer on the arc additive substrate; the water cooling base plate is connected with the water cooling box, the water cooling box provides circulating cooling water for the cooling base plate, and the cooling base plate is used for continuously cooling the arc material adding base plate in the arc material adding process;
The temperature detector is connected with the microcomputer; the temperature detector is used for acquiring infrared thermal imaging of a deposition layer in real time in the process of printing the additive part layer by layer; the microcomputer is used for adjusting the layer deposition time of the deposition layer according to the infrared thermal imaging, so that the interlayer temperature of the deposition layer is lower than a temperature threshold;
the high-speed camera is connected with the microcomputer and is used for acquiring a molten pool image in real time in the process of printing the additive parts layer by layer; the microcomputer is used for adjusting the cooling air flow of the vortex cooling pipe according to the molten pool image so as to maintain the shape of the molten pool;
The online control method of the temperature between the arc additive layers applied to the system comprises the following steps: installing an electric arc material adding substrate on a water-cooling substrate, opening a water-cooling box, and simultaneously starting a microcomputer, a high-speed camera and a temperature detector; starting an electric arc material adding device to perform material adding work, and opening the vortex cooling pipe when printing to a 6 th deposition layer by layer; in the process of printing the additive parts layer by layer, acquiring infrared thermal imaging and molten pool images of a deposition layer in real time; if the layer-by-layer temperature of the deposition layer displayed on the infrared thermal imaging is greater than a temperature threshold, increasing the deposition time interval of each layer to 90s; if the arc is shown to drift unstably on the bath image, the cooling air flow of the vortex cooling tube is reduced to 70% of the current cooling air flow.
2. The arc additive interlayer temperature on-line control method according to claim 1, wherein the vortex cooling pipe comprises: the device comprises an air guide support, a three-way pipe, an air pipe, a vortex tube, a silencing nozzle, a main pipe and a shunt;
The air guide support is internally of a hollow structure, one end of the air guide support is fixed on the magnetic base, the other end of the air guide support is communicated with the first pipe joint of the three-way pipe, and the middle part of the air guide support is communicated with the air pipe;
the second pipe joint of the three-way pipe is connected with one end of the vortex tube, and the other end of the vortex tube is connected with the silencing nozzle;
the third pipe joint of the three-way pipe is connected with one end of the main pipe, and the other end of the main pipe is connected with the plurality of spray pipes through the flow divider;
The air pipe is used for introducing normal-temperature compressed air into the vortex tube through the air guide support and the three-way pipe by utilizing the air compressor; the inside of the vortex tube is provided with a vortex chamber, and the vortex tube is used for converting the normal-temperature compressed air into high-temperature gas and cooling gas through vortex conversion after the normal-temperature compressed air enters the vortex chamber, the high-temperature gas is sprayed out from the silencing nozzle, and the cooling gas is sprayed out from the plurality of spray pipes sequentially through the three-way pipe, the main pipe and the flow divider.
3. The arc additive inter-layer temperature on-line control method of claim 2, wherein each of the nozzles further comprises: a branch pipe;
one end of the branch pipe is connected with the flow divider, and the other end of the branch pipe is connected with the nozzle.
4. The method for on-line temperature control between arc additive layers according to claim 3, wherein the materials of the nozzle and the branch pipe are nickel-based alloy GH4043;
all the nozzles are arranged in a straight line, the distance between every two adjacent nozzles is 10mm, and the straight line distance between each nozzle and the additive part is 20mm.
5. The arc additive interlayer temperature on-line control method according to claim 1, wherein the arc additive apparatus comprises: an electric arc welder power supply, a welding gun and a protective gas cylinder;
the electric arc welder power is connected with the welder electricity, and the protection gas cylinder is used for providing inert gas protection welder.
6. The method according to claim 1, wherein the compressed air pressure of the vortex cooling pipe is 6.9Bar, the refrigerating flow is 1410SLPM, and the refrigerating capacity is 857 Kcal/hr.
7. The method for on-line control of the temperature between the arc additive layers according to claim 1, wherein the temperature detector is a thermal infrared imager, imaging pixels of the thermal infrared imager are 120 x 120, and the temperature measurement range is 100-500 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211280720.9A CN115446422B (en) | 2022-10-19 | Online control system and control method for temperature between arc additive layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211280720.9A CN115446422B (en) | 2022-10-19 | Online control system and control method for temperature between arc additive layers |
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| CN115446422A CN115446422A (en) | 2022-12-09 |
| CN115446422B true CN115446422B (en) | 2024-06-21 |
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