A corrosion reaction box for complex and slender copper tube core of flow corrosion aluminum alloy casting

Abstract

The present invention provides a corrosion reaction box for complex and slender copper tube cores of aluminum alloy castings by flow corrosion, and relates to the technical field of corrosion reaction boxes. The corrosion reaction box for complex and slender copper tube cores of aluminum alloy castings by flow corrosion comprises a box body, the corners of the bottom of the box body are fixedly connected with universal wheels, the top of the box body is rotatably connected with a sealed box cover, the center of the front end of the sealed box cover is fixedly connected with a box opening handle, the center of the front end of the box body and the center of the top of the sealed box cover are both embedded with observation windows, a corrosion liquid circulation mechanism is installed on one side of the outer wall of the box body, the top of the center of the box body is fixedly connected with a rotating support mechanism, and the top of the rotating support mechanism is rotatably connected with an aluminum alloy casting positioning mechanism. By designing a flow-type corrosion processing structure, the copper tube core in the aluminum alloy casting can be rapidly corroded, which greatly accelerates the corrosion efficiency and does not cause corrosion damage to the aluminum alloy casting body.

Description

Technical Field

[0001] The invention relates to the technical field of corrosion reaction boxes, in particular to a corrosion reaction box for a complex and elongated copper tube core of a flow corrosion aluminum alloy casting. Background Art

[0002] In aircraft engines, there are many aluminum alloy casings and shell parts. Such parts require relatively complex slender holes to be made inside, with a diameter of generally 3 to 6 mm and an aspect ratio greater than 60, in order to transport high-pressure (some need to withstand high pressures of up to 120 atmospheres) oil, fuel, lubricants and other liquid substances. Therefore, the parts are required to have sufficient strength and density. The pre-buried copper tube is used to form aluminum alloy fine holes, that is, the copper tube is used as the core and cast into the casting. After the casting is successful, the copper tube core is corroded and removed by corrosive liquid. This method directly obtains a smooth inner wall, uniform pore size, and slender curved channel in the casting that cannot be cast by general casting methods, and the surface structure of the fine hole channel is fine and dense, with high strength and density, which greatly improves the yield rate.

[0003] The copper tube corrosion method can be used to achieve fine-pore casting of aluminum alloys, that is, using a copper tube as a core, inserting it into the aluminum alloy casting, and then after the casting is successful, the copper tube is corroded and removed by corrosive liquid (strong nitric acid), without affecting the aluminum alloy casting. Under the action of strong nitric acid, a very dense aluminum oxide protective film quickly forms on the surface of the aluminum alloy casting itself, which passivates the aluminum alloy and prevents the acid from further corroding the aluminum alloy, thereby obtaining the required fine-pore channel. This method can directly obtain a smooth inner wall, uniform pore size, and slender curved channel in the casting that cannot be cast by general casting methods, and the surface structure of the fine-pore channel is fine and dense, with high strength and density. This process method is mainly used to cast fine-pore channels for transporting fuel and lubricating oil on certain aluminum alloy shells, and its diameter is generally φ3~6mm. At present, the removal of the copper tube core of aluminum alloy castings is completed by corrosion with a certain concentration of nitric acid solution. The main method used is the immersion method, in which the entire casting is immersed in nitric acid corrosion solution. After a period of chemical reaction, the copper tube in the aluminum alloy casting is removed to form a fine pore channel in the aluminum alloy casting.

[0004] The corrosion reaction box for complex and slender copper tube cores of aluminum alloy castings is a corrosion equipment that uses the corrosive environment conditions created by the corrosive liquid equipment to corrode the slender copper tube cores on the inner wall of aluminum alloy castings. The common corrosion method is to directly put the aluminum alloy castings into the corrosive solution for corrosion processing. Although this corrosion method can corrode the copper tube on the inner wall of the aluminum alloy, the corrosion processing time is too long, and the corrosive solution also has certain damage to the aluminum alloy body, which is easy to cause damage to the aluminum alloy castings. For this reason, we have developed a new type of flow corrosion corrosion reaction box for complex and slender copper tube cores of aluminum alloy castings. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a corrosion reaction box for complex and slender copper tube cores of aluminum alloy castings using flow corrosion, which solves the problem that although the copper tube on the inner wall of the aluminum alloy can be corroded by the immersion corrosion method, the corrosion processing time is too long, and the corrosion solution also has certain damage to the aluminum alloy body, which is easy to cause damage to the aluminum alloy casting.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the present invention is implemented by the following technical solutions: A corrosion reaction box for complex and elongated copper tube cores of flow corrosion aluminum alloy castings, comprising a box body, the corners of the bottom of the box body are fixedly connected with universal wheels, the top of the box body is rotatably connected with a sealed box cover, the center of the front end of the sealed box cover is fixedly connected with a box opening handle, the center of the front end of the box body and the center of the top of the sealed box cover are both embedded with observation windows, and one side of the top of the sealed box cover is provided with an exhaust port;

[0009] A corrosive liquid circulation mechanism is installed on one side of the outer wall of the box body, a rotating support mechanism is fixedly connected to the top of the center of the box body, and an aluminum alloy casting positioning mechanism is rotatably connected to the top of the rotating support mechanism;

[0010] A flow diversion mechanism corresponding to the corrosive liquid circulation mechanism is installed on one side of the inner wall of the box, and a plurality of retractable connecting pipes are fixedly connected to one end of the flow diversion mechanism away from the box, and a plurality of retractable connecting pipes are fixedly connected to one end of the flow diversion mechanism away from the flow diversion mechanism and to a flow guide fixing mechanism corresponding to the aluminum alloy casting positioning mechanism;

[0011] A fixed handle is fixedly connected to the top of the outer wall of the box body away from the corrosive liquid circulation mechanism, and a liquid discharge port is arranged at the bottom of the outer wall of the box body away from the corrosive liquid circulation mechanism.

[0012] Preferably, the sealed box cover is rotatably connected to the box body via two aluminum alloy hinges, and the observation window is made of tempered glass.

[0013] Preferably, the corrosive liquid circulation mechanism includes a support frame, the bottom of one side of the outer wall of the box body is fixedly connected to the support frame, a circulation pump is installed on the top of the support frame, the bottom of the water inlet of the circulation pump is fixedly connected to the water inlet pipe, and one end of the water outlet of the circulation pump is fixedly connected to the water outlet pipe.

[0014] Preferably, the rotating support mechanism comprises a supporting plate, a supporting plate is arranged on the top of the center of the box body, fixing rods are fixedly connected to the front and rear ends of both sides of the supporting plate, and a rotating seat is installed at the center of the top of the supporting plate.

[0015] Preferably, the aluminum alloy casting positioning mechanism includes a positioning seat, the top of the rotating seat is fixedly connected to the positioning seat, the rear end of the top of the positioning seat is rotatably connected to the positioning frame, the centers of the positioning seat and the positioning frame are provided with positioning grooves, the center of the positioning frame is provided with a fixed clamping plate, a plurality of sets of return springs are fixedly connected between the fixed clamping plate and the top inner wall of the positioning frame, and both sides of the bottom of the front end of the positioning seat are rotatably connected to rotating buckle plates of the positioning frame.

[0016] Preferably, the diverter mechanism includes a diverter, a diverter corresponding to the corrosive liquid circulation mechanism is installed on one side of the inner wall of the box body, a liquid injection port corresponding to the water outlet pipe is provided on the side of the diverter close to the inner wall of the box body, a plurality of liquid outlet pipes are fixedly connected to the side of the diverter away from the liquid injection port, flow valves are installed in the middle sections of the plurality of liquid outlet pipes, and a connecting joint is fixedly connected to one end of the plurality of liquid outlet pipes away from the diverter.

[0017] Preferably, the flow diversion fixing mechanism includes a fixing frame, and one end of the plurality of telescopic connecting tubes away from the diversion mechanism is fixedly connected to a fixing frame corresponding to the aluminum alloy casting positioning mechanism, and the center of the fixing frame is slidably connected to a plurality of threaded pipe sleeves, and one end of the plurality of threaded pipe sleeves away from the telescopic connecting tubes are all fixedly connected to injection tubes, and the outer walls of the plurality of injection tubes are all sleeved with sealing plugs, and the outer wall of the fixing frame is screwed with a plurality of fixing nuts corresponding to the threaded pipe sleeves, and a locking bolt is installed on the top of the fixing frame.

[0018] Preferably, a rectangular hole corresponding to a plurality of threaded sleeves is opened at the center of the fixing frame.

[0019] Working principle: When using this kind of flow corrosion aluminum alloy casting complex slender copper tube core corrosion reaction box, before the corrosion process, the aluminum alloy casting to be processed can be placed between the positioning seat 901 and the positioning frame 902. After the positioning frame 902 is closed, the fixed clamp 904 will clamp, position and fix the aluminum alloy casting under the elastic action of the reset spring 905. After the aluminum alloy casting is positioned, the injection tube 1203 can be inserted into the thin copper tube on the corresponding aluminum alloy casting, and then the fixing frame 1201 is engaged with the aluminum alloy casting positioning mechanism 9, and finally the aluminum alloy casting positioning mechanism 9 is used to lock and fix it. After preparation, start the circulation pump 702, the corrosive liquid in the box body 1 will be drawn in through the water inlet pipe 703, and then introduced into the diverter 1001 through the water outlet pipe 704. The corrosive liquid entering the diverter 1001 will flow out through multiple liquid outlet pipes 1003 respectively, and enter the corresponding retractable The liquid in the liquid outlet pipe 1003 is connected to the connecting pipe 11, and then flows into the thin copper tube on the aluminum alloy casting through the corresponding liquid injection tube 1203, so that the corrosive liquid reacts chemically with the copper tube to corrode the thin copper tube. The flow valve 1004 installed in the middle section of the multiple liquid outlet pipes 1003 can control the flow rate and opening and closing state of the corrosive liquid in the corresponding pipeline. The operator can automatically adjust and control it according to the number of aluminum alloy castings to be processed. After the corrosive liquid reacts chemically with the copper tube, a certain amount of smoke will be generated. At this time, the exhaust port 6 can be connected to the exhaust equipment to quickly extract the smoke generated in the box 1 and centrally treat it to prevent air pollution. Since the liquid injection tube 1203 is thinner than the copper tube to be corroded, during the corrosion process, the end of the copper tube close to the liquid injection tube 1203 is prone to incomplete corrosion. Therefore, it is necessary to rotate the rotating seat 803, and then corrode from the other end of the aluminum alloy casting, so that the corrosion process is more thorough and clean.

[0020] (III) Beneficial effects

[0021] The present invention provides a corrosion reaction box for complex and elongated copper tube core of flow corrosion aluminum alloy castings. It has the following beneficial effects:

[0022] 1. This kind of flow corrosion aluminum alloy casting complex slender copper tube core corrosion reaction box can quickly complete the positioning and fixation of the aluminum alloy casting through the design of a simple rapid positioning structure, thereby facilitating the corrosion processing of the copper tube core inside it.

[0023] 2. This kind of flow corrosion aluminum alloy casting complex slender copper tube core corrosion reaction box, through the design of the flow corrosion processing structure, can make the copper tube core in the aluminum alloy casting quickly corrode, greatly accelerate the corrosion efficiency, and will not cause corrosion damage to the aluminum alloy casting body, thereby greatly improving its overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a main structural view of a corrosion reaction box for a complex and elongated copper tube core of a flow corrosion aluminum alloy casting according to the present invention;

[0025] Figure 2 It is a top view of the structure of a corrosion reaction box sealing cover for a complex and elongated copper tube core of a flow corrosion aluminum alloy casting according to the present invention;

[0026] Figure 3 It is a top view of the structural diagram of a corrosion reaction box rotation support mechanism for a complex and elongated copper tube core of a flow corrosion aluminum alloy casting according to the present invention;

[0027] Figure 4 It is a side structural diagram of a corrosion reaction box aluminum alloy casting positioning mechanism for a complex and elongated copper tube core of a flow corrosion aluminum alloy casting of the present invention;

[0028] Figure 5 It is a structural schematic diagram of a corrosion reaction box diversion mechanism for a complex and elongated copper tube core of a flow corrosion aluminum alloy casting according to the present invention;

[0029] Figure 6 The present invention is a schematic structural diagram of a corrosion reaction box guide fixing mechanism for a complex and elongated copper tube core of a flow corrosion aluminum alloy casting.

[0030] In the figure, 1, box body; 2, universal wheel; 3, sealed box cover; 4, opening handle; 5, observation window; 6, exhaust port; 7, corrosive liquid circulation mechanism; 701, support frame; 702, circulation pump; 703, water inlet pipe; 704, water outlet pipe; 8, rotating support mechanism; 801, support plate; 802, fixing rod; 803, rotating seat; 9, aluminum alloy casting positioning mechanism; 901, positioning seat; 902, positioning frame; 903, positioning groove; 904, fixing clamp; 90 5. Reset spring; 906. Rotating buckle plate; 10. Diverter mechanism; 1001. Diverter; 1002. Liquid injection port; 1003. Liquid outlet pipe; 1004. Flow valve; 1005. Connector; 11. Retractable connecting pipe; 12. Diversion fixing mechanism; 1201. Fixing frame; 1202. Threaded sleeve; 1203. Liquid injection capillary; 1204. Sealing plug; 1205. Fixing nut; 1206. Locking bolt; 13. Fixing handle; 14. Liquid discharge port. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example:

[0033] like Figure 1-6 As shown, the embodiment of the present invention provides a corrosion reaction box for complex and elongated copper tube cores of flow corrosion aluminum alloy castings, comprising a box body 1, the corners of the bottom of the box body 1 are fixedly connected with universal wheels 2, the top of the box body 1 is rotatably connected with a sealed box cover 3, the center of the front end of the sealed box cover 3 is fixedly connected with a box opening handle 4, the center of the front end of the box body 1 and the center of the top of the sealed box cover 3 are both embedded with observation windows 5, and one side of the top of the sealed box cover 3 is provided with an exhaust port 6. After the corrosive liquid reacts chemically with the copper tube, a certain amount of smoke will be generated. At this time, the exhaust port 6 can be connected to an exhaust device, so that the smoke generated in the box body 1 can be quickly extracted and centrally processed to prevent air pollution;

[0034] A corrosive liquid circulation mechanism 7 is installed on one side of the outer wall of the box body 1, a rotating support mechanism 8 is fixedly connected to the top of the center of the box body 1, and an aluminum alloy casting positioning mechanism 9 is rotatably connected to the top of the rotating support mechanism 8;

[0035] A flow diversion mechanism 10 corresponding to the corrosive liquid circulation mechanism 7 is installed on one side of the inner wall of the box body 1, and a plurality of retractable connecting pipes 11 are fixedly connected to one end of the flow diversion mechanism 10 away from the box body 1, and a flow guide fixing mechanism 12 corresponding to the aluminum alloy casting positioning mechanism 9 is fixedly connected to one end of the plurality of retractable connecting pipes 11 away from the flow diversion mechanism 10;

[0036] A fixed handle 13 is fixedly connected to the top of the outer wall of the box body 1 away from the corrosive liquid circulation mechanism 7, and a drain port 14 is provided at the bottom of the outer wall of the box body 1 away from the corrosive liquid circulation mechanism 7. After processing, the corrosive liquid in the box body 1 can be discharged through the drain port 14.

[0037] The sealed box cover 3 is rotatably connected to the box body 1 through two aluminum alloy hinges, and the observation window 5 is made of tempered glass. The observation window 5 made of tempered glass can not only facilitate observation of the processing conditions in the box body 1, but also play a good protective role.

[0038] The corrosion liquid circulation mechanism 7 includes a support frame 701, and the support frame 701 is fixedly connected to the bottom of one side of the outer wall of the box body 1. A circulation pump 702 is installed on the top of the support frame 701. The bottom of the water inlet of the circulation pump 702 is fixedly connected to an inlet pipe 703, and one end of the water outlet of the circulation pump 702 is fixedly connected to an outlet pipe 704. When the corrosion process is performed, after the circulation pump 702 is started, the corrosion liquid in the box body 1 will be drawn in through the inlet pipe 703, and then introduced into the diverter 1001 through the outlet pipe 704.

[0039] The rotating support mechanism 8 includes a support plate 801, and the support plate 801 is arranged on the top of the center of the box body 1. The front and rear ends of both sides of the support plate 801 are fixedly connected with fixed rods 802. A rotating seat 803 is installed in the center of the top of the support plate 801. Since the liquid injection tube 1203 is thinner than the copper tube to be corroded, during the corrosion process, the end of the copper tube close to the liquid injection tube 1203 is prone to incomplete corrosion. Therefore, it is necessary to rotate the rotating seat 803 and then corrode from the other end of the aluminum alloy casting, so that the corrosion process can be more thorough and clean.

[0040] The aluminum alloy casting positioning mechanism 9 includes a positioning seat 901, the top of the rotating seat 803 is fixedly connected with the positioning seat 901, the rear end of the top of the positioning seat 901 is rotatably connected with a positioning frame 902, the centers of the positioning seat 901 and the positioning frame 902 are provided with positioning grooves 903, the center of the positioning frame 902 is provided with a fixed clamping plate 904, and multiple groups of return springs 905 are fixedly connected between the fixed clamping plate 904 and the top inner wall of the positioning frame 902, and both sides of the bottom of the front end of the positioning seat 901 are rotatably connected with rotating buckle plates 906 with the positioning frame 902. Before corrosion processing, the aluminum alloy casting to be processed can be placed between the positioning seat 901 and the positioning frame 902. After the positioning frame 902 is closed, the fixed clamping plate 904 will clamp, position and fix the aluminum alloy casting under the elastic action of the return spring 905.

[0041] The diverter mechanism 10 includes a diverter 1001. The diverter 1001 corresponding to the corrosive liquid circulation mechanism 7 is installed on one side of the inner wall of the box body 1. A liquid injection port 1002 corresponding to the water outlet pipe 704 is arranged on the side of the diverter 1001 close to the inner wall of the box body 1. A plurality of liquid outlet pipes 1003 are fixedly connected to the side of the diverter 1001 away from the liquid injection port 1002. Flow valves 1004 are installed in the middle sections of the plurality of liquid outlet pipes 1003. Connecting joints 1005 are fixedly connected to one end of the plurality of liquid outlet pipes 1003 away from the diverter 1001. The corrosive liquid entering the diverter 1001 will flow out through the plurality of liquid outlet pipes 1003 respectively and enter the corresponding retractable connecting pipe 11. The flow valves 1004 installed in the middle sections of the plurality of liquid outlet pipes 1003 can control the flow rate and the opening and closing state of the corrosive liquid in the corresponding pipeline. The operator can automatically adjust and control according to the number of aluminum alloy castings to be processed.

[0042] The diversion fixing mechanism 12 includes a fixing frame 1201, and one end of a plurality of telescopic connecting tubes 11 away from the diversion mechanism 10 is fixedly connected to the fixing frame 1201 corresponding to the aluminum alloy casting positioning mechanism 9, and the center of the fixing frame 1201 is slidably connected to a plurality of threaded pipe sleeves 1202, and one end of the plurality of threaded pipe sleeves 1202 away from the telescopic connecting tubes 11 is fixedly connected to a liquid injection tube 1203, and the outer walls of the plurality of liquid injection tubes 1203 are all sleeved with sealing plugs 1204, and the outer wall of the fixing frame 1201 is screwed with a plurality of fixing nuts 1205 corresponding to the threaded pipe sleeves 1202, and a locking bolt 1206 is installed on the top of the fixing frame 1201. After the aluminum alloy casting is positioned, the liquid injection tube 1203 can be inserted into the thin copper tube on the corresponding aluminum alloy casting, and then the fixing frame 1201 is engaged with the aluminum alloy casting positioning mechanism 9, and finally the aluminum alloy casting positioning mechanism 9 is used to lock and fix it.

[0043] A rectangular hole corresponding to the plurality of threaded sleeves 1202 is formed in the center of the fixing frame 1201 .

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion reaction box for complex and elongated copper tube cores of flow corrosion aluminum alloy castings, comprising a box body (1), characterized in that: Universal wheels (2) are fixedly connected at the corners of the bottom of the box body (1), a sealed box cover (3) is rotatably connected to the top of the box body (1), a box opening handle (4) is fixedly connected to the center of the front end of the sealed box cover (3), an observation window (5) is embedded in the center of the front end of the box body (1) and the center of the top of the sealed box cover (3), and an exhaust port (6) is provided on one side of the top of the sealed box cover (3); The sealed box cover (3) is rotatably connected to the box body (1) via two aluminum alloy hinges, and the observation window (5) is made of tempered glass; A corrosive liquid circulation mechanism (7) is installed on one side of the outer wall of the box body (1), and the corrosive liquid circulation mechanism (7) comprises a support frame (701), the bottom of one side of the outer wall of the box body (1) is fixedly connected to the support frame (701), a circulation pump (702) is installed on the top of the support frame (701), the bottom of the water inlet of the circulation pump (702) is fixedly connected to a water inlet pipe (703), and one end of the water outlet of the circulation pump (702) is fixedly connected to a water outlet pipe (704); The top of the center of the box body (1) is fixedly connected to a rotating support mechanism (8), and the top of the rotating support mechanism (8) is rotatably connected to an aluminum alloy casting positioning mechanism (9); A flow diversion mechanism (10) corresponding to the corrosive liquid circulation mechanism (7) is installed on one side of the inner wall of the box body (1); one end of the flow diversion mechanism (10) away from the box body (1) is fixedly connected to a plurality of telescopic connecting pipes (11); and one end of the plurality of telescopic connecting pipes (11) away from the flow diversion mechanism (10) is fixedly connected to a flow guide fixing mechanism (12) corresponding to the aluminum alloy casting positioning mechanism (9); A fixed handle (13) is fixedly connected to the top of the outer wall of the box body (1) on the side away from the corrosive liquid circulation mechanism (7), and a liquid discharge port (14) is provided at the bottom of the outer wall of the box body (1) on the side away from the corrosive liquid circulation mechanism (7).

2. A corrosion reaction box for complex and elongated copper tube core of flow corrosion aluminum alloy casting according to claim 1, characterized in that: The rotating support mechanism (8) comprises a supporting plate (801), the supporting plate (801) being arranged at the top of the center of the box body (1), the front and rear ends of both sides of the supporting plate (801) being fixedly connected with fixing rods (802), and a rotating seat (803) being installed at the center of the top of the supporting plate (801).

3. A corrosion reaction box for complex and elongated copper tube core of flow corrosion aluminum alloy casting according to claim 2, characterized in that: The aluminum alloy casting positioning mechanism (9) comprises a positioning seat (901), the top of the rotating seat (803) is fixedly connected to the positioning seat (901), the rear end of the top of the positioning seat (901) is rotatably connected to a positioning frame (902), the centers of the positioning seat (901) and the positioning frame (902) are both provided with positioning grooves (903), the center of the positioning frame (902) is provided with a fixed clamping plate (904), a plurality of groups of return springs (905) are fixedly connected between the fixed clamping plate (904) and the inner wall of the top of the positioning frame (902), and both sides of the bottom of the front end of the positioning seat (901) are rotatably connected to rotating buckle plates (906) corresponding to the positioning frame (902).

4. The corrosion reaction box for complex and elongated copper tube core of flow corrosion aluminum alloy casting according to claim 1, characterized in that: The flow diverter (1001) comprises a flow diverter (1001), a flow diverter (1001) corresponding to the corrosive liquid circulation mechanism (7) is installed on one side of the inner wall of the box body (1), a liquid injection port (1002) corresponding to the water outlet pipe (704) is arranged on the side of the flow diverter (1001) close to the inner wall of the box body (1), a plurality of liquid outlet pipes (1003) are fixedly connected to the side of the flow diverter (1001) away from the liquid injection port (1002), a flow valve (1004) is installed in the middle section of the plurality of liquid outlet pipes (1003), and a connection joint (1005) is fixedly connected to the end of the plurality of liquid outlet pipes (1003) away from the flow diverter (1001).

5. The corrosion reaction box for complex and elongated copper tube core of flow corrosion aluminum alloy casting according to claim 1, characterized in that: The flow guide fixing mechanism (12) comprises a fixing frame (1201), one end of the plurality of telescopic connecting tubes (11) away from the diversion mechanism (10) is fixedly connected to a fixing frame (1201) corresponding to the aluminum alloy casting positioning mechanism (9), a plurality of threaded pipe sleeves (1202) are slidably connected to the center of the fixing frame (1201), one end of the plurality of threaded pipe sleeves (1202) away from the telescopic connecting tubes (11) are fixedly connected to injection capillaries (1203), the outer walls of the plurality of injection capillaries (1203) are sleeved with sealing plugs (1204), the outer wall of the fixing frame (1201) is screwed with a plurality of fixing nuts (1205) corresponding to the threaded pipe sleeves (1202), and a locking bolt (1206) is installed on the top of the fixing frame (1201).

6. A corrosion reaction box for complex and elongated copper tube core of flow corrosion aluminum alloy casting according to claim 5, characterized in that: A rectangular hole corresponding to the plurality of threaded sleeves (1202) is provided at the center of the fixing frame (1201).

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