CN112605510B - Filament-powder composite plasma arc additive manufacturing device and using method - Google Patents
Filament-powder composite plasma arc additive manufacturing device and using method Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/02—Plasma welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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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
Abstract
The invention discloses a wire powder composite plasma arc additive manufacturing device and a using method, and relates to the field of intermetallic compound alloy additive manufacturing, wherein the device comprises a plasma welding device, an arc height sensor (12), a wire powder composite filler device and a computer (16), wherein the arc height sensor (12) is assembled on the plasma welding device, and the plasma welding device, the arc height sensor (12) and the wire powder composite filler device are respectively connected with the computer (16). According to the invention, the powder adding device is introduced on the basis of the double heterogeneous wires, so that the flexible regulation and control of the target intermetallic compound alloy trace elements are realized, and various performances of the intermetallic compound are effectively improved. The plasma arc height is adjusted by adding the arc height sensor, so that the stability of plasma arc, molten pool and wire powder filler transition in the additive process is effectively improved, and the defect rate of an additive component is reduced.
Description
Technical Field
The invention relates to the field of intermetallic compound alloy additive manufacturing, in particular to a wire powder composite plasma arc additive manufacturing device and a using method thereof.
Background
The intermetallic compound alloy has wide application prospect in engineering fields such as aerospace (titanium-aluminum alloy), fossil energy (iron-aluminum alloy), nuclear energy utilization (iron-nickel alloy), biomedicine (nickel-titanium alloy) and the like due to low density and excellent performance in special working environments such as high temperature, strong corrosive wear and the like. However, because intermetallic compound alloys generally have high room temperature brittleness, cold cracks, solidification cracks and other defects are easy to occur in the preparation and forming processes. Therefore, the existing intermetallic compound alloy preparation and forming methods such as precision casting, vacuum arc smelting, plasma sintering and the like all need complex process procedures, so that the intermetallic compound alloy member has extremely high manufacturing cost and low efficiency and yield. Compared with the traditional metal processing technology, the additive manufacturing technology has the characteristics of high forming flexibility and high manufacturing efficiency, and has obvious advantages in the rapid and efficient manufacturing of high-value alloy components, so that the forming preparation of the intermetallic compound alloy is greatly explored in the technical field of additive manufacturing in recent years.
The existing additive manufacturing technology for intermetallic compound alloy mainly comprises powder vacuum electron beam selective melting additive manufacturing and a recently emerging intermetallic compound additive manufacturing technology based on double-wire arc, and the main reason is that the temperature of the additive manufacturing interlayer can reach more than 400 ℃ in additive manufacturing interlayer temperature control, so that the additive metallic compound alloy can be ensured to have no crack defects. The melting and material increase manufacturing of the vacuum electron beam selective area enters a mature stage in the manufacturing of an aviation titanium-aluminum intermetallic compound alloy component, the corresponding material increase manufacturing of the titanium-aluminum alloy component also realizes the standardized application of an aircraft engine product, but the cost of process equipment and powder is too high, and the post-treatment hot isostatic pressing process of the powder material increase component is expensive, so that the method is difficult to popularize in the engineering field outside aerospace. Therefore, the intermetallic compound additive manufacturing technology based on the double-wire arc is proposed and rapidly developed in recent years, the technology uses the tungsten electrode argon arc as an additive heat source, and sends dissimilar welding wires of binary intermetallic compound components into the tungsten electrode arc heat source to realize in-situ alloy preparation and forming of the target binary intermetallic compound in a single molten pool. In addition, by using the inert protective gas trailing protective cover and the high-temperature additive substrate heating table, the intermetallic compound additive manufacturing technology based on the twin-wire arc can effectively control oxygen/nitridation and crack defects of the target alloy in the in-situ preparation forming process.
At present, the research and development of the intermetallic compound additive manufacturing technology of the double-wire arc abroad are mainly Wulungong university in Australia, which is also the pioneer unit of the technology, and the in-situ preparation and forming of the double-wire tungsten electrode argon arc additive manufacturing of the binary intermetallic compounds such as iron-aluminum, titanium-aluminum, copper-aluminum, iron-nickel, nickel-titanium and the like have been carried out since 2015. The method is used as the first experimental platform of the dual-wire arc intermetallic compound material additive system, mainly focuses on publication of related scientific research papers, and the system is simple: a tungsten electrode argon arc welding heat source is used as a material increase molten pool generating assembly, a ceramic electric blanket is used as a substrate heating assembly, a linear machine tool is used as a travelling mechanism, and the device is provided with a simple following inert gas protection device.
The units developed aiming at the related technologies in China mainly comprise Shanghai transportation university, Tianjin university, Harbin engineering university, Harbin industry university, Nanjing Miller university and Nanjing aerospace university, and a plurality of related scientific research papers and patent applications are published. A plurality of related papers and patent applications (application publication number: CN111390347A) were published since 2018 by Shanghai university of transportation, and related researches on the compounds between iron nickel and nickel titanium are completed. Tianjin university filed a patent on a double-wire feeding clamp (application publication No. CN109420821A), and also published a related paper on in-situ preparation of titanium-aluminum-niobium ternary alloy based on double-wire tungsten electrode argon arc additive manufacturing. The Harbin engineering university applied for related patents based on bypass hot wire twin wire plasma arc additive manufacturing (application publication No.: CN109014522A, CN 111168263A). The Harbin university of industry has also published papers on a twin-wire TOP-TIG arc additive based patent application (application publication No.: CN 111390338A). Related journal papers and patent applications (application publication numbers: CN109926705A, CN109926695A, and CN108067715A) were also published by Nanjing university of science and engineering based on twin-wire coordinated wire feeding plasma additive manufacturing system. Nanjing aerospace university applied for a functional gradient material manufacturing patent based on twin-wire twin-arc (application publication No.: CN 111545870A).
However, the dual-wire electric/plasma arc based intermetallic compound additive manufacturing technology developed at home and abroad is not flexible enough in filler material aspect, the components of the formed alloy prepared by additive are limited by the self components of the wire, so that the regulation and control of trace alloy elements are not flexible enough, and the defect in the preparation of the intermetallic compound alloy with the specified components is obvious. In terms of the improvement of the performance of the intermetallic compound, the addition of a plurality of alloy elements to realize the grain refinement and the strength improvement of the alloy is necessary and necessary. In addition, the arc height of the electric/plasma arc has a great influence on the stability of the additive forming process, and the existing system cannot realize stable control on the arc height, so that the additive component is formed unstably.
Accordingly, those skilled in the art have endeavored to develop a filament-powder composite plasma arc additive manufacturing device and method of use.
Disclosure of Invention
In view of the above defects in the prior art, the technical problem to be solved by the invention is how to realize flexible regulation of trace alloy elements in an in-situ alloying process in a twin-wire plasma arc molten pool and how to effectively and stably control the arc height in real time.
In order to achieve the purpose, the invention provides a wire powder composite plasma arc additive manufacturing device which comprises a plasma welding device, an arc height sensor (12), a wire powder composite filler device and a computer (16), wherein the arc height sensor (12) is assembled on the plasma welding device, and the plasma welding device, the arc height sensor (12) and the wire powder composite filler device are respectively connected with the computer (16).
Further, the wire powder composite material filling device comprises a wire feeding system I (7), a wire feeding system II (8) and a powder feeding system (10), wherein the wire feeding system I (7), the wire feeding system II (8) and the powder feeding system (10) are respectively connected with a computer (16).
Further, plasma arc power (1), plasma welding torch (2), welding platform and six robots (3) are installed to plasma welding device, plasma arc power (1) is connected with plasma welding torch (2), plasma welding torch (2) assembly is on six robots (3) and is connected with computer (16), welding platform arranges under plasma welding torch (2), arc height sensor (12) assembly is on plasma welding torch (2).
Further, the welding platform is a robot welding platform (4).
Further, the robotic welding platform (4) is equipped with an additive interlaminar temperature control system (14).
Further, the robotic welding platform (4) is equipped with an additive platform atmosphere containment (15).
Further, the plasma torch (2) is provided with a trailing inert gas shield (11).
Further, the use method of the filament-powder composite plasma arc additive manufacturing device comprises the following steps:
step 1, selecting a substrate (13) with proper components according to the alloy components of a target intermetallic compound, selecting a first wire (5) and a second wire (6) with different components according to the alloy components of the target intermetallic compound, preparing powder (9) according to the contents of other alloy elements except basic binary components of the target intermetallic compound alloy, clamping the substrate (13) on a temperature control system (14) among additive layers, and setting the preheating/interlayer temperature at 400-800 ℃;
3, moving the plasma welding gun (2) to a corresponding position of the substrate (13) by using the six-axis robot (3), arranging an intersection point of the wire I (5) and the wire II (6) at the front end of the plasma arc molten pool, and arranging a spraying position of the powder material (9) in the plasma arc molten pool;
and 8, after the temperature of the substrate (13) is reduced to 600 ℃ of the additive layer temperature control system (14), the six-axis robot (3) moves the plasma welding gun (2) to the next layer additive initial position, and the steps are repeated to perform the next layer additive manufacturing.
Further, when the wire I (5) and the wire II (6) are fed to the front end of the plasma arc in the step 5, the metal wire with the low melting point is arranged above the plasma arc, the metal wire with the high melting point is arranged below the plasma arc, the metal wire with the low melting point enters a plasma arc molten pool in a mutually overlapped mode, and the metal wire with the low melting point is partially melted and is brought into the plasma arc molten pool by the metal wire with the high melting point.
Further, the plasma welding gun (2) in the step 6 is kept perpendicular to the substrate (13) in the running process.
The invention has the following technical effects:
1) by introducing the powder adding device on the basis of the double heterogeneous wires, the flexible regulation and control of the target intermetallic compound alloy trace elements are realized, and various performances of the intermetallic compound are effectively improved;
2) the plasma arc has good concentration ratio and higher energy density, effectively reduces the heat input amount under the same additive amount, improves the additive forming precision and simultaneously reduces the residual stress of an additive component;
3) the plasma arc height is adjusted by adding the arc height sensor, so that the stability of plasma arc, molten pool and wire powder filler transition in the additive process is effectively improved, and the defect rate of an additive component is reduced.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic diagram of an in-situ preparation and forming system for an intermetallic compound alloy based on filament powder composite plasma arc additive manufacturing according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a plasma arc filament powder composite additive manufacturing filler device in a system-in-device according to a preferred embodiment of the present invention;
FIG. 3 is a schematic illustration of the positional relationship of the wire and the powder and the plasma arc melt pool in a wire powder additive manufacturing process in a system setup according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view of a filament powder composite plasma arc additive manufacturing arc height control portion of a system apparatus according to a preferred embodiment of the present invention;
the system comprises a plasma arc power supply 1, a plasma welding gun 2, a six-axis robot 3, a robot welding platform 4, a wire I5, a wire II 6, a wire II 7, a wire feeding system II 8, a wire feeding system II 9, a powder material 10, a powder feeding system 11, a following inert gas protection device 12, an arc height sensor 13, a substrate 13, a material increase interlayer temperature control system 14, a material increase platform atmosphere enclosing device 15 and a computer 16.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Example 1
Fig. 1 is a schematic diagram of an in-situ preparation forming device for an intermetallic compound based on filament-powder composite plasma arc additive manufacturing according to the present invention, wherein the additive substrate portion: selecting a substrate 13 with proper components according to the components of the target intermetallic compound alloy, clamping the substrate 13 on an additive interlayer temperature control system 14, and performing proper preheating/interlayer temperature control on the target intermetallic compound alloy by using the additive interlayer temperature control system 14, wherein the preheating/interlayer temperature is 400-800 ℃. And an additive interlayer temperature control system 14 clamped with the substrate 13 is fixed on the robot welding platform 4 with an additive platform atmosphere enclosing device 15.
Additive plasma arc heat source part: the plasma welding torch 2 is assembled on the six-axis robot 3, the plasma welding torch 2 is vertical to the substrate 13 in the operation process, and the plasma arc height is stably controlled at a set value through an arc height sensor 12 assembled on the plasma welding torch 2.
Silk powder filling material part: and selecting a first wire 5 and a second wire 6 with different components according to the alloy components of the target intermetallic compound, and respectively feeding the first wire 7 and the second wire 8 into the front end of the plasma arc by using two mutually independent wire feeding systems. Preparing powder 9 according to the contents of other alloying elements except the basic binary components in the target intermetallic compound alloy, spraying the powder at the position of a plasma arc molten pool by using a powder feeding system 10, and forming effective in-situ alloying with the metal of the fed wire. The trailing inert gas shield 11 is provided behind the plasma arc bath to prevent the target intermetallic alloy alloyed in situ from being oxidized/nitrided during cooling.
The system architecture and control part: the plasma arc power supply 1 provides energy required by the additive plasma arc heat source part. The additive path of the plasma torch 2 carried by the six-axis robot 3 is generated by the computer 16. The arc height information obtained by the arc height sensor 12 is processed by the computer 16 and fed back to the six-axis robot 3 to adjust the single-layer additive arc height to a set value in real time. The traveling speed of the plasma welding gun 2, the wire feeding speeds of the two wire feeding systems I7 and II 8 which are independent of each other, and the powder feeding rate of the powder feeding system 10 are controlled by a computer 16 through calculation in advance.
The intermetallic compound in-situ preparation method based on filament powder composite plasma arc additive manufacturing comprises the following steps:
step 1: for the target aerospace titanium aluminum 4822 alloy (Ti-48Al-2Cr-2Nb) composition, a pure titanium plate was selected as the additive substrate 13, fixed to the additive interlayer temperature control system 14 mounted on the robotic welding platform 4, and the preheat/interlayer temperature was set at 600 ℃. Selecting a titanium wire and an aluminum wire with the diameter of 0.8mm as a wire I5 and a wire II 6 to be respectively filled into a wire feeding system I7 and a wire feeding system II 8 which are independent from each other, selecting a powder material 9 formed by mixing pure chromium powder and pure niobium powder with the particle size of 100 mu m to be filled into a powder feeding system 10, and setting wire feeding and powder feeding rates under the condition of considering the burning loss of plasma arc elements according to target alloy components.
Step 2: before additive manufacturing, the shielding gas of the plasma welding gun 2 and the following inert gas protection device 11 is checked, and the shielding gas is started for a period of time to ensure that the additive platform atmosphere containment device 15 has certain inert gas protection. The arc height is controlled to be 7 to 10mm by the arc height sensor 12.
And step 3: the plasma welding gun 2 is moved to the corresponding position of the substrate 13 by using the six-axis robot 3, the intersection point of the first wire 5 and the second wire 6 is arranged at the front end of the plasma arc molten pool, and the spraying position of the powder 9 is arranged in the plasma arc molten pool.
And 4, step 4: and inputting the single-layer planned path of the target additive material member into the computer 16, teaching the walking path of the six-axis robot 3, and moving the plasma welding gun 2 back to the initial position after determining that no error exists.
And 5: after the plasma power supply 1 is started to stay at the initial position for 3 seconds, the two wire feeding systems I7, II 8 and 10 which are independent of each other start to fill the molten pool with the powder 9 mixed by the titanium and the aluminum wire I5, the wire II 6 and the chromium/niobium at the set speed, and effective alloying additive manufacturing forming is formed in situ.
Step 6: during the traveling process of the plasma welding gun 2, the arc height sensor 12 inputs arc height information to the computer 16 in real time, and the computer 16 outputs dynamic feedback adjustment information to the six-axis robot 3 through calculation to stably and effectively control the arc height.
And 7: after the single-layer additive manufacturing is finished, the two wire feeding systems I7 and II 8 which are independent of each other and the powder feeding system 10 stop filling materials, the plasma arc power supply 1 closes the plasma arc, the plasma welding torch 2 and the follow-up inert gas protection device 11 keep inert gas feeding for 60s, and inert gas protection in the cooling process is guaranteed.
And 8: after the temperature of the substrate 13 is reduced to 600 ℃ of the additive layer temperature control system 14, the six-axis robot 3 moves the plasma welding gun 2 to the next layer additive initial position, and the steps are repeated to perform the next layer additive manufacturing.
As shown in FIG. 2, when the first wire 5 and the second wire 6 of different types are fed to the front end of the plasma arc, the metal wire with low melting point is on the upper part, the metal wire with high melting point is on the lower part, and the metal wires enter a molten pool of the plasma arc in a mutually overlapped mode, and the metal wire with low melting point is partially melted and is brought into the molten pool of the plasma arc by the metal wire with high melting point. The powder 9 is fed into the plasma arc molten bath in situ.
FIG. 3 is a schematic diagram showing the positional relationship between the powder material 9 and the first and second dissimilar wire materials 5 and 6 in the manufacturing process of the wire-powder composite additive. The powder 9 is fed into and covers the plasma arc melting pool through a plasma nozzle which meets the requirements of various melting point powder profiles. The direction of additive stacking is shown as arrows in the figure, before two different wires I5 and II 6 are sent into the molten pool, the wire I5 with a relatively high melting point is arranged below, the wire II 6 with a relatively low melting point is arranged above and intersected at the front end of the plasma arc to form a state of entering the plasma arc molten pool in a mutually overlapped mode, and the metal wires with low melting points are partially melted and carried into the plasma arc molten pool by the metal wires with high melting points.
Fig. 4 is a schematic diagram of the plasma arc high control process of the present invention. In the plasma arc material increase process, the arc height sensor 12 reads a plasma arc voltage value in real time and transmits the plasma arc voltage value to the computer 16, the computer 16 transmits the calculated feedback adjustment height value to the six-axis robot 3, and then the consistency of the arc height in the plasma arc material increase process is ensured by controlling the distance between the plasma welding torch 2 and the surface of a molten pool at the material increase position.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. A wire powder composite plasma arc additive manufacturing device aims at additive forming of intermetallic compound alloy and comprises a plasma welding device, an arc height sensor (12), a wire powder composite filling device and a computer (16), wherein the arc height sensor (12) is assembled on the plasma welding device, and the plasma welding device, the arc height sensor (12) and the wire powder composite filling device are respectively connected with the computer (16); its characterized in that, the compound filler of silk powder still includes wire feeding system (7), wire feeding system two (8) and powder feeding system (10), wire feeding system (7) with wire feeding system two (8) are two mutually independent wire feeding system, send into the front end of plasma arc through the paraxial mode with silk material (5) and silk material two (6) respectively, and the metal silk material that the melting point is low is last, and the metal silk material that the melting point is high is under, forms and gets into the plasma arc molten bath with the form of overlap joint each other, the metal silk material part that the melting point is low melts and by the metal silk material that the melting point is high takes in the plasma arc molten bath, silk material (5) with silk material two (6) are the heterogeneous composition silk material of selecting to target intermetallic compound alloy composition, powder feeding system (10) with powder material (9) spray in plasma arc molten bath position, and forming effective in-situ alloying with the fed wire metal, wherein the powder material (9) is prepared according to the content of other alloying elements except basic binary components in a target intermetallic compound alloy, and the arc height is controlled to be 7-10mm by the arc height sensor (12).
2. The wire-powder composite plasma arc additive manufacturing device according to claim 1, wherein the wire feeding system (7), the wire feeding system II (8) and the powder feeding system (10) are respectively connected with the computer (16), and the wire-powder composite filling device uses a non-melting electrode form to feed a wire-powder filling material into a molten pool.
3. The wire-powder composite plasma arc additive manufacturing device according to claim 2, wherein the plasma welding device comprises a plasma arc power supply (1), a plasma welding gun (2), a welding platform and a six-axis robot (3), wherein the plasma arc power supply (1) is connected with the plasma welding gun (2), the plasma arc power supply (1) and the wire-powder composite filler device are independent, the plasma welding gun (2) is assembled on the six-axis robot (3) and is connected with a computer (16), the welding platform is placed under the plasma welding gun (2), the arc height sensor (12) is assembled on the plasma welding gun (2), and the plasma welding gun (2) follows the outfitted inert gas protection device (11).
4. The wire-powder composite plasma arc additive manufacturing device according to claim 3, wherein the welding platform is a robot welding platform (4), the robot welding platform (4) is equipped with an additive interlayer temperature control system (14), the temperature control range of the additive interlayer temperature control system (14) is 400-800 ℃, and the robot welding platform (4) is equipped with an additive platform atmosphere containment device (15).
5. The method of using a filament-powder composite plasma arc additive manufacturing device according to claim 4, wherein the method comprises the steps of:
step 1, selecting a substrate (13) with proper components according to target intermetallic compound alloy components, selecting a first wire (5) and a second wire (6) with different components according to the target intermetallic compound alloy components, preparing a powder (9) according to the content of other alloy elements except basic binary components of the target intermetallic compound alloy, clamping the substrate (13) on an additive interlayer temperature control system (14), and setting the preheating/interlayer temperature at 400-800 ℃;
step 2, starting the following inert gas protection device (11), enabling the atmosphere enclosing device (15) of the additive platform to have certain inert gas protection, and controlling the arc height to be 7-10mm through the arc height sensor (12);
3, moving the plasma welding gun (2) to a corresponding position of the substrate (13) by using the six-axis robot (3), arranging an intersection point of the wire I (5) and the wire II (6) at the front end of the plasma arc molten pool, and arranging a spraying position of the powder material (9) in the plasma arc molten pool;
step 4, inputting the single-layer planned path of the target additive component into the computer (16), teaching the traveling path of the six-axis robot (3), and moving the plasma welding gun (2) back to the initial position after determining that no error exists;
step 5, turning on the plasma power supply (1), firstly sending out protective gas by the plasma welding gun (2) and the follow-up inert gas protection device (11), starting plasma arcs after forming protective atmosphere around a tungsten electrode of the plasma welding gun (2), positioning and keeping for 3-5s at an initial position to form a stable plasma arc molten pool, then, filling the wire I (5), the wire II (6) and the powder material (9) into the molten pool at a speed which is calculated in advance and input into the computer (16) by the wire feeding system I (7), the wire II (8) and the powder feeding system (10), and forming alloying additive manufacturing in situ;
step 6, in the process of walking of the plasma welding gun (2), the arc height sensor (12) inputs arc height information to the computer (16) in real time, and the computer (16) outputs dynamic feedback adjustment information to the six-axis robot (3) through calculation to stably control the arc height;
step 7, stopping filling materials of the wire feeding system I (7), the wire feeding system II (8) and the powder feeding system (10), closing a plasma arc, keeping inert gas feeding of the plasma welding gun (2) and the follow-up inert gas protection device (11), and stopping gas feeding after the in-situ additive intermetallic compound alloy is cooled;
and 8, after the temperature of the substrate (13) is reduced to 600 ℃ set by the additive layer temperature control system (14), the six-axis robot (3) moves the plasma welding gun (2) to the next layer additive initial position, and the steps are repeated to perform the next layer additive manufacturing.
6. The use method of the wire-powder composite plasma arc additive manufacturing device according to claim 5, wherein the plasma welding gun (2) is kept perpendicular to the base plate (13) in the process of traveling in the step 6.
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| CN114905126A (en) * | 2022-05-31 | 2022-08-16 | 中国人民解放军陆军装甲兵学院 | Device and method for manufacturing three-dimensional gradient material by filament-powder co-melting plasma arc additive manufacturing |
| CN115889941A (en) * | 2022-11-18 | 2023-04-04 | 吉林大学 | Multi-material powder feeding auxiliary arc fuse additive manufacturing method and system |
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| CN111250701A (en) * | 2020-01-20 | 2020-06-09 | 山东科技大学 | Ultrasonic vibration assisted laser selective melting forming device and method |
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