An arc additive manufacturing system for particle reinforced alloys and methods thereof

Abstract

The application discloses an electric arc additive manufacturing system and method suitable for particle reinforced alloy, which comprises an upper table plate and a lower table plate arranged below the upper table plate, the lower end of the lower table plate is provided with a base, the sidewall of the base is fixedly provided with a first sliding rail, and the first sliding rail is slidably provided with a second sliding rail. The upper end of the first sliding rail is fixedly provided with a molten pool, the second sliding rail is slidably provided with a TIG cladding head, the TIG cladding head and the molten pool are communicated with a pipe, and the upper table plate is fixedly provided with a work plate at intervals. The application relates to the technical field of additive manufacturing, and the electric arc additive manufacturing system and method suitable for particle reinforced alloy can cool the manufacturing piece being printed and manufactured, can cool the metal particles in the first time, and can prevent direct blowing on the just-printed manufacturing piece, prevent the cooling wind from having an adverse effect on the manufacturing piece, and ensure the quality of the manufacturing piece.

Description

Technical Field

[0001] The invention relates to the field of additive manufacturing technology, specifically to an electric arc additive manufacturing system and method applicable to particle-reinforced alloys. Background Technology

[0002] Additive manufacturing technology is an emerging advanced manufacturing technology that has emerged in the last decade, driving the transformation from mass production to personalized manufacturing. Arc additive manufacturing, with its high deposition efficiency and fast additive speed, has significant advantages in the additive manufacturing of large components. Compared with traditional subtractive manufacturing, arc additive manufacturing can shorten forming time by 40%-60%, while also achieving higher material utilization and reducing subsequent machining time by 15%-20%. Compared to traditional subtractive manufacturing methods, arc additive manufacturing can save 78% of raw material costs.

[0003] In existing additive manufacturing processes, when manufacturing hollow or fine model parts, the molten metal may shift during the initial printing process, leading to cracks, pores, material collapse, or soft deformation, resulting in poor product quality.

[0004] To address these issues, the invention provides an electric arc additive manufacturing system and method suitable for particle-reinforced alloys. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an arc additive manufacturing system and method suitable for particle-reinforced alloys, thus solving the aforementioned problems.

[0006] To achieve the above objectives, the invention is implemented through the following technical solution: an arc additive manufacturing system and method suitable for particle-reinforced alloys, comprising an upper platform and a lower platform spaced below the upper platform, the lower end of the lower platform being provided with a base, a first slide rail being fixedly provided on the side wall of the base, and a second slide rail being slidably provided at the first slide rail. A molten pool is fixedly provided at the upper end of the first slide rail, and a TIG cladding head is slidably provided on the second slide rail. A through pipe is provided between the TIG cladding head and the molten pool. Work plates are fixedly provided at intervals on the upper platform. Ventilation discs are provided at both ends between the upper and lower platforms. A telescopic ventilation pipe is connected to the upper end of the ventilation disc. A connecting pipe is connected to the upper end of the telescopic ventilation pipe. A fixed air box is connected to the side wall of the connecting pipe. Multiple fans are rotatably provided inside the fixed air box. A back plate is fixed to the side wall of the TIG cladding head. The back plate and the two fixed air boxes are connected by a sliding snap-fit ​​assembly. Multiple ventilation holes are evenly opened on the upper surface of the upper platform. The ventilation holes are located below the work plate. An automatic windproof assembly is also provided between the upper wall of the upper platform and the TIG cladding head.

[0007] Preferably, the sliding snap-fit ​​assembly includes a sliding groove fixedly disposed on the side wall of the back plate, a sliding block slidably disposed in the sliding groove, a movable rod fixedly disposed transversely through the sliding block, and sliding cavities corresponding to the side walls of the two fixed air boxes, with both ends of the movable rod being snap-fitted and slidably disposed within the sliding cavities.

[0008] Preferably, the automatic windproof assembly includes multiple windproof panels slidably disposed on the upper wall of the upper platform. The multiple windproof panels together form a square frame. The multiple windproof panels are interconnected by elastic telescopic connecting rods. The upper wall of each windproof panel located on one of the four sides of the square frame is provided with a rotating telescopic rod. The side wall of each rotating telescopic rod is provided with a fixing rod. A fixing connecting rod is fixed between the fixing rod and the upper wall of the upper platform. The rotating telescopic rod is rotatably disposed on the side wall of the fixing rod.

[0009] Preferably, multiple magnetic sheets are provided above the multiple wind shields, and the multiple magnetic sheets are also arranged in a square frame. The multiple magnetic sheets are connected to each other by telescopic connecting rods. The lower wall of the magnetic sheet at the four sides of the square frame is rotatably connected to the upper end of the telescopic rod. Magnets are fixedly provided on the four side walls of the TIG cladding head. The magnets are arranged correspondingly, and the magnets on the same side are magnetically repulsive.

[0010] Preferably, the TIG cladding head is slidably mounted on the second slide rail via a back plate.

[0011] Preferably, a fan power supply is provided between the two fixed air boxes on both sides, the fan power supply and the fixed air boxes are connected by a connecting rod, and the fan power supply is electrically connected to multiple fans.

[0012] The methods include:

[0013] S1. Add the required metal and particle reinforcement to the molten pool, and spray it through the TIG cladding head by operating the pipe.

[0014] S2. Turn on the fan power to start the fan. The generated airflow will cool the manufactured model in time through the ventilation plate and ventilation holes.

[0015] During the S3 TIG cladding head moving printing process, when the TIG cladding head is directly above the work plate, the ventilation holes are fully open to cool the model. As the TIG cladding head gradually moves closer to the periphery of the work plate, the ventilation holes are gradually blocked.

[0016] S4. After printing is complete, control the TIG cladding head away from the work plate and recycle the molded part. Beneficial effects

[0017] This invention provides an arc additive manufacturing system and method suitable for particle-reinforced alloys. Compared with the prior art, it has the following advantages:

[0018] (1) The electric arc additive manufacturing system and method applicable to particle-reinforced alloys, the cooling air generated by the fan blows upward from the ventilation hole, the air blown out of the ventilation hole is blocked by the magnetic sheet or the second slide rail and dissipates above the work plate, thereby cooling the manufactured parts that are being printed. It can cool the metal particles in the first time and prevent the newly printed parts from being blown directly, prevent the cooling air from having an adverse effect on the parts, and ensure the quality of the parts.

[0019] (2) The electric arc additive manufacturing system and method applicable to particle-reinforced alloys, when the telescopic rod rotates, it drives the wind shield at the lower end of the telescopic rod to move, thereby overcoming the elasticity of the elastic telescopic link itself, making the square frame formed by multiple wind shields smaller, thereby making the wind shield cover the ventilation hole, reducing the amount of air blown out of the ventilation hole when the TIG cladding head prints around the part, realizing automatic identification of the printing position to adjust the amount of air passing through the ventilation hole, further ensuring the product quality of the part and improving the printing efficiency while reducing the impact on the part. Attached Figure Description

[0020] Figure 1 This is a frontal three-dimensional structural schematic diagram of an electric arc additive manufacturing system and method for particle-reinforced alloys proposed in this invention;

[0021] Figure 2 This is a three-dimensional structural diagram of another side of an electric arc additive manufacturing system and method for particle-reinforced alloys proposed in the invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the lower end of an electric arc additive manufacturing system and method for particle-reinforced alloys proposed in this invention.

[0023] Figure 4 yes Figure 3 Schematic diagram of the structure at point A;

[0024] Figure 5 This is a three-dimensional structural diagram of the lower back side of an electric arc additive manufacturing system and method for particle-reinforced alloys proposed in this invention.

[0025] Figure 6 This is a three-dimensional structural diagram of the sliding snap-fit ​​component on the lower back side of an electric arc additive manufacturing system and method for particle-reinforced alloys proposed in the invention.

[0026] Figure 7 yes Figure 6 A schematic diagram of the structure at point B.

[0027] In the diagram: 1. Upper platform; 2. Lower platform; 3. First slide rail; 4. Molten pool; 5. Second slide rail; 6. Through pipe; 7. TIG cladding head; 8. Work plate; 9. Ventilation disc; 10. Telescopic ventilation pipe; 11. Connecting pipe; 12. Fixed air box; 13. Fan; 14. Connecting rod; 15. Fan power supply; 16. Ventilation hole; 17. Magnet; 18. Wind shield; 19. Elastic telescopic connecting rod; 20. Rotating telescopic rod; 21. Fixed rod; 22. Fixed connecting rod; 23. Magnet; 24. Telescopic connecting rod; 25. Back plate; 26. Slide groove; 27. Sliding block; 28. Slide cavity; 29. ​​Movable rod. Detailed Implementation

[0028] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention. Example

[0029] Please see Figure 1-7An electric arc additive manufacturing system and method for particle-reinforced alloys includes an upper platform 1 and a lower platform 2 spaced below the upper platform 1. The lower end of the lower platform 2 is provided with a base, and a first slide rail 3 is fixedly provided on the side wall of the base. A second slide rail 5 is slidably provided at the first slide rail 3. A molten pool 4 is fixedly mounted on the upper end of the first slide rail 3. A TIG cladding head 7 is slidably mounted on the second slide rail 5. The TIG cladding head 7 is slidably mounted on the second slide rail 5 via a back plate 25. A through pipe 6 connects the TIG cladding head 7 and the molten pool 4. Work plates 8 are fixedly mounted at intervals on the upper platform 1. Ventilation discs 9 are provided at both ends between the upper platform 1 and the lower platform 2. A telescopic ventilation pipe 10 is connected to the upper end of the ventilation disc 9. A connecting pipe 11 is connected to the upper end of the telescopic ventilation pipe 10. A fixed air box 12 is connected to the side wall of the connecting pipe 11. A fan power supply 15 is provided between the two fixed air boxes 12 on both sides. The fan power supply 15 and the fixed air box 12 are connected by a connecting rod 14. The fan power supply 15 is electrically connected to multiple fans 13. Multiple fans are rotatably mounted inside the fixed air box 12. 13. A back plate 25 is fixed to the side wall of the TIG cladding head 7. The back plate 25 and the two fixed air boxes 12 are connected by a sliding snap-fit ​​assembly. Multiple ventilation holes 16 are evenly opened on the upper surface of the upper platform 1. The ventilation holes 16 are set below the work plate 8. An automatic wind shielding assembly is also provided between the upper wall of the upper platform 1 and the TIG cladding head 7. The cooling air generated by the fan 13 blows upward from the ventilation holes 16. The air blown out of the ventilation holes 16 is blocked by the magnetic sheet 23 or the second slide rail 5 and other parts, and then dissipates above the work plate 8, thereby cooling the part being printed. It can cool the metal particles in time and prevent direct blowing on the freshly printed part, preventing the cooling air from having an adverse effect on the part and ensuring the quality of the part. Example

[0030] Please see Figure 1-7 This embodiment provides a technical solution based on embodiment one: the sliding snap-fit ​​assembly includes a sliding groove 26 fixedly disposed on the side wall of the back plate 25, a sliding block 27 slidably disposed in the sliding groove 26, a movable rod 29 horizontally fixedly disposed at the sliding block 27, and sliding cavities 28 correspondingly disposed on the side walls of the two fixed air boxes 12. Both ends of the movable rod 29 are snap-fitted and slidably disposed in the sliding cavity 28, so that the TIG cladding head 7 can move in any direction during the manufacturing process without hindering the cooling process of the fan 13 on the molded part, thus ensuring the normal operation of the device;

[0031] The automatic windproof assembly includes multiple windproof panels 18 that are slidably disposed on the upper wall of the upper platform 1. The multiple windproof panels 18 together form a square frame. The multiple windproof panels 18 are connected to each other by elastic telescopic connecting rods 19. The upper walls of the windproof panels 18 located on the four sides of the square frame are all provided with rotating telescopic rods 20. The side walls of the rotating telescopic rods 20 are all provided with fixing rods 21. The fixing rods 21 and the upper wall of the upper platform 1 are fixedly connected by fixing connecting rods 22. The rotating telescopic rods 20 are rotatably disposed on the side walls of the fixing rods 21.

[0032] Multiple magnetic plates 23 are correspondingly arranged above multiple wind shields 18, and the multiple magnetic plates 23 are also arranged in a square frame. The multiple magnetic plates 23 are interconnected by telescopic connecting rods 24. The lower walls of the magnetic plates 23 at the four sides of the square frame are rotatably connected to the upper end of the rotating telescopic rod 20. Magnet plates 17 are fixedly arranged on the four side walls of the TIG cladding head 7. The magnet plates 17 and magnetic plates 23 are arranged correspondingly, and the magnetism between the magnet plates 17 and magnetic plates 23 on the same side is set to repel each other. When the rotating telescopic rod 20 rotates, it drives the rotating... The wind shield 18 at the lower end of the telescopic rod 20 moves to overcome the elasticity of the elastic telescopic link 19, making the square frame formed by multiple wind shields 18 smaller. This allows the wind shield 18 to cover the ventilation hole 16, reducing the amount of air blown out of the ventilation hole 16 when the TIG cladding head 7 prints around the part. This enables automatic identification of the printing position to adjust the amount of air passing through the ventilation hole 16, further ensuring the product quality of the part and improving printing efficiency while minimizing the impact on the part.

[0033] The methods include:

[0034] S1. Add the required metal and particle reinforcement to the molten pool 4, and spray it through the TIG cladding head 7 by the operation of the pipe 6.

[0035] S2. Turn on the fan power 15 to drive the fan 13 to run. The generated airflow cools the manufactured model in time through the ventilation plate 9 and ventilation holes 16.

[0036] S3. During the TIG cladding head 7 moving and printing, when the TIG cladding head 7 is directly above the work plate 8, the ventilation hole 16 is fully open to cool the model. As the TIG cladding head 7 gradually moves closer to the periphery of the work plate 8, it gradually blocks the ventilation hole 16.

[0037] S4. After printing is complete, control the TIG cladding head 7 away from the work plate 8 and recycle the molded part.

[0038] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0039] When the device is in use, the required metal and particle enhancer are added to the molten pool 4 and sprayed out from the TIG cladding head 7 through the through pipe 6 for printing. During this process, the fan power 15 is turned on, so that the fan 13 runs. The air generated by the fan 13 enters the telescopic ventilation pipe 10 through the connecting pipe 11 and is then blown out from the ventilation plate 9 connected to the lower end of the telescopic ventilation pipe 10. The cooling air generated on both sides collides between the upper plate 1 and the lower plate 2 and blows upward from the ventilation hole 16. The air blown out of the ventilation hole 16 is blocked by the magnetic sheet 23 or the second slide rail 5 and dissipates above the work plate 8, thereby cooling the part being printed. It can cool the metal particles in time and prevent direct blowing on the freshly printed part, preventing the cooling air from having an adverse effect on the part and ensuring the quality of the part.

[0040] In the above process, to prevent the air blown from the ventilation hole 16 from directly blowing onto the edge of the workpiece when the TIG cladding head 7 is printing on the periphery of the workpiece, the following structure is designed: When the TIG cladding head 7 is printing on the center of the workpiece, the wind shield 18 is located at the edge of the ventilation hole 16, and the air blown from the ventilation hole 16 is at a normal airflow. As the TIG cladding head 7 gradually moves towards the periphery of the workpiece, the magnet 17 and the corresponding magnet 23 on the side wall of the TIG cladding head 7 gradually move closer together. Due to the magnetic repulsion between the magnet 17 and the magnet 23 on the same side, the magnet 23 is pushed towards the periphery. Under the action of the telescopic link 24, the square frame formed by multiple magnetic sheets 23 increases simultaneously, thereby driving the rotating telescopic rod 20 to rotate around the fixed rod 21 and extend and retract. When the rotating telescopic rod 20 rotates, it drives the wind shield 18 at the lower end of the rotating telescopic rod 20 to move, thereby overcoming the elasticity of the elastic telescopic link 19 itself, making the square frame formed by multiple wind shields 18 smaller, thereby making the wind shield 18 cover the ventilation hole 16, reducing the amount of air blown out of the ventilation hole 16 when the TIG cladding head 7 prints around the manufactured part, and further ensuring the product quality of the manufactured part while reducing the impact on the manufactured part.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An arc additive manufacturing system suitable for particle-reinforced alloys, characterized in that: The system includes an upper platform (1) and a lower platform (2) spaced below the upper platform (1). The lower end of the lower platform (2) is provided with a base. A first slide rail (3) is fixedly provided on the side wall of the base. A second slide rail (5) is slidably provided on the first slide rail (3). A molten pool (4) is fixedly provided on the upper end of the first slide rail (3). A TIG cladding head (7) is slidably provided on the second slide rail (5). A through pipe (6) is provided between the TIG cladding head (7) and the molten pool (4). A work plate (8) is fixedly provided on the upper platform (1) at intervals. Ventilation discs (9) are provided at both ends between the upper platform (1) and the lower platform (2). The upper end of the ventilation disc (9) is connected to... The TIG cladding head (7) is provided with a telescopic ventilation pipe (10), the upper end of which is connected to a connecting pipe (11). A fixed air box (12) is connected to the side wall of the connecting pipe (11). Multiple fans (13) are rotatably installed inside the fixed air box (12). A back plate (25) is fixed to the side wall of the TIG cladding head (7). The back plate (25) and the two fixed air boxes (12) are connected by a sliding snap-fit ​​assembly. Multiple ventilation holes (16) are evenly opened on the upper surface of the upper platform (1). The ventilation holes (16) are set below the working plate (8). An automatic wind shielding assembly is also provided between the upper wall of the upper platform (1) and the TIG cladding head (7). The automatic windproof assembly includes multiple windproof panels (18) that are slidably disposed on the upper wall of the upper platform (1). The multiple windproof panels (18) together form a square frame. The multiple windproof panels (18) are connected to each other by elastic telescopic connecting rods (19). The upper walls of the windproof panels (18) located on the four sides of the square frame are all equipped with rotating telescopic rods (20). The side walls of the rotating telescopic rods (20) are all provided with fixing rods (21). The fixing rods (21) and the upper walls of the upper platform (1) are fixedly connected by fixing rods (22). The rotating telescopic rods (20) are rotatably disposed on the side walls of the fixing rods (21). Multiple wind shields (18) are provided with multiple magnetic sheets (23) above them. The multiple magnetic sheets (23) are also arranged in a square frame. The multiple magnetic sheets (23) are connected to each other by telescopic connecting rods (24). The lower wall of the magnetic sheet (23) at the four sides of the square frame is rotatably connected to the upper end of the rotating telescopic rod (20). The four side walls of the TIG cladding head (7) are fixedly provided with magnetic sheets (17). The magnetic sheets (17) and magnetic sheets (23) are arranged correspondingly, and the magnetic properties between the magnetic sheets (17) and magnetic sheets (23) on the same side are set to repel each other.

2. The arc additive manufacturing system for particle-reinforced alloys according to claim 1, characterized in that: The sliding snap-fit ​​assembly includes a slide groove (26) fixedly installed on the side wall of the back plate (25), a sliding block (27) is slidably provided in the slide groove (26), a movable rod (29) is fixedly provided horizontally through the sliding block (27), and a sliding cavity (28) is provided on the side wall of the two fixed bellows (12). Both ends of the movable rod (29) are snap-fitted and slidably installed in the sliding cavity (28).

3. The arc additive manufacturing system for particle-reinforced alloys according to claim 1, characterized in that: The TIG cladding head (7) is slidably mounted on the second slide rail (5) via the back plate (25).

4. The arc additive manufacturing system for particle-reinforced alloys according to claim 1, characterized in that: A fan power supply (15) is provided between the two fixed air boxes (12) on both sides. The fan power supply (15) and the fixed air box (12) are connected by a connecting rod (14), and the fan power supply (15) is electrically connected to multiple fans (13).

5. A method for use in an arc additive manufacturing system suitable for particle-reinforced alloys according to any one of claims 1-4, characterized in that: The method includes: S1. Add the required metal and particle reinforcement to the molten pool (4) and spray it by the TIG cladding head (7) through the operation of the pipe (6); S2. Turn on the fan power (15) to drive the fan (13) to run. The generated air force cools the manufactured model in time through the ventilation plate (9) and ventilation hole (16). S3. During the TIG cladding head (7) moving and printing, when the TIG cladding head (7) is directly above the work plate (8), the ventilation hole (16) is fully open to cool the model. As the TIG cladding head (7) gradually approaches the periphery of the work plate (8), it gradually blocks the ventilation hole (16). S4. After printing is completed, control the TIG cladding head (7) to move away from the work plate (8) and recycle the molded part.

Images