A vacuum-assisted anaerobic glue repairing device for casting leakage

Abstract

The utility model relates to foundry technology field, and disclose a kind of vacuum-assisted anaerobic glue repairing device for casting leakage point, comprising: transparent sealing cavity connected in the surface of casting, and the bottom edge of transparent sealing cavity is equipped with sealant groove, and the top of transparent sealing cavity is provided with sealing cover plate.The vacuum-assisted anaerobic glue repairing device for casting leakage point, by setting transparent sealing cavity and vacuum interface, vacuum interface is connected with vacuum pump, and the air and impurities such as oil in shrinkage and micropore are forced to discharge by using pressure difference, which creates favorable conditions for the injection and depth penetration of anaerobic glue, ensures that the glue solution can completely fill the internal space of defect, and forms permanent sealing throughout the defect after solidification, fundamentally solves the problem of incomplete sealing of traditional surface glue coating method, greatly reduces the scrap rate of casting.

Description

Technical Field

[0001] This utility model relates to the field of casting repair technology, specifically a vacuum-assisted anaerobic adhesive repair device for leaks in castings. Background Technology

[0002] In the production of metal castings, especially large and complex castings such as engine blocks, gearbox housings, and hydraulic valve bodies, defects such as shrinkage and micropores are easily generated inside the castings due to factors such as cooling shrinkage and sand molds. These defects can lead to fluid leakage during pressure testing, resulting in product defects. Traditional casting leakage repair uses welding or remelting processes, which are prone to thermal deformation and are not suitable for microcracks. For leaks on accessible surfaces with large defect points, welding, riveting, and other processes can be used for repair.

[0003] However, for micron-level shrinkage pores or defects in complex locations, traditional welding methods suffer from problems such as thermal stress deformation, damage to the casting matrix, and inability to completely seal micropores. Current technologies often use anaerobic adhesives directly applied to suspected leakage areas for sealing, but this method has significant limitations: air and impurities inside the micro-defects cannot be expelled, hindering the adhesive from fully penetrating and forming an ineffective seal; the operation process lacks visibility, making it impossible to confirm whether the adhesive has completely filled the defect, resulting in a low repair success rate and poor stability, leading to the scrapping of a large number of castings with only minor defects due to irreparable damage. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a vacuum-assisted anaerobic adhesive repair device for leaks in castings, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a vacuum-assisted anaerobic adhesive repair device for leaks in castings, comprising: a transparent sealing cavity connected to the surface of the casting, the bottom edge of the transparent sealing cavity being provided with a sealing adhesive groove, and a sealing cover being provided on the top of the transparent sealing cavity; The top of the sealing cover is provided with an injection port for injecting anaerobic adhesive, a vacuum interface for connecting an external vacuum pump, and an observation window. One end of the vacuum interface extends into the interior of the transparent sealed cavity, and the vacuum interface is equipped with a valve and a sealing ring.

[0006] Preferably, both the transparent sealed cavity and the observation window are made of transparent rigid plastic sheet, and the thickness of the transparent rigid plastic sheet is ≥10mm.

[0007] Preferably, the transparent rigid plastic sheet is a polycarbonate sheet or a polymethyl methacrylate sheet.

[0008] Preferably, the sealant groove is pre-coated with high-strength epoxy structural adhesive.

[0009] Preferably, the vacuum interface and the sealing cover are connected by a threaded seal, and the valve is a ball valve or a needle valve.

[0010] Preferably, the transparent sealed cavity is rectangular, circular, or polygonal in shape.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This vacuum-assisted anaerobic adhesive repair device for casting leakage points uses a transparent sealed cavity and a vacuum interface. An external vacuum pump is connected to the vacuum interface to draw negative pressure into the sealed transparent cavity. The pressure difference forces the air and oil and other impurities in the shrinkage porosity and micropores to be discharged, creating favorable conditions for the injection and deep penetration of anaerobic adhesive. This ensures that the adhesive can completely fill the internal space of the defect and form a permanent seal that runs through the entire defect after curing. This fundamentally solves the problem of incomplete sealing by traditional surface coating methods and greatly reduces the scrap rate of castings.

[0012] 2. This vacuum-assisted anaerobic adhesive repair device for casting leakage points uses a transparent sealed cavity and observation window made of transparent rigid plastic plate. Operators can intuitively monitor the injection, flow, penetration, and final curing of the anaerobic adhesive throughout the entire process. This visualization function makes the repair process controllable and reliable, avoids blind operation, allows for immediate judgment of the repair effect, and ensures the consistency of product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram: 1. Casting; 2. Transparent sealed cavity; 3. Sealing Glue tank; 4. Sealing cover plate; 5. Glue injection port; 6. Vacuum interface; 7. Observation window; 8. Valve; 9. Sealing ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 A vacuum-assisted anaerobic adhesive repair device for leaks in castings includes: a transparent sealing cavity 2 connected to the surface of the casting 1, the bottom edge of the transparent sealing cavity 2 being provided with a sealant groove 3, and the top of the transparent sealing cavity 2 being provided with a sealing cover plate 4. The top of the sealing cover plate 4 is provided with an injection port 5 for injecting anaerobic adhesive, a vacuum interface 6 for connecting an external vacuum pump, and an observation window 7. One end of the vacuum interface 6 extends into the interior of the transparent sealed cavity 2, and the vacuum interface 6 is equipped with a valve 8 and a sealing ring 9.

[0017] Both the transparent sealed cavity 2 and the observation window 7 are made of transparent rigid plastic sheet with a thickness of ≥10mm.

[0018] The transparent rigid plastic sheet is made of polycarbonate or polymethyl methacrylate.

[0019] The sealant groove 3 is pre-coated with high-strength epoxy structural adhesive.

[0020] Vacuum interface 6 and sealing cover 4 are connected by threaded seal, and valve 8 is a ball valve or needle valve.

[0021] The transparent sealed cavity 2 can be rectangular, circular, or polygonal in shape. When using: After locating the leakage point of casting 1, apply glue to the bottom sealing groove 3 of the transparent sealing cavity 2 and let it adhere to the surface of casting 1 for curing. Anaerobic adhesive is injected through injection port 5 to fill 80% of the volume of the transparent sealed cavity 2. Close the glue injection port 5, connect the vacuum pump to the vacuum interface 6, and open the valve 8 to evacuate to -0.08MPa to -0.1MPa; Monitor the penetration of the adhesive through observation window 7, and maintain vacuum until the anaerobic adhesive is completely cured, about 10-15 minutes. Remove the device and retest the pressure after 24 hours. The transparent sealed cavity 2 and vacuum interface 6 are connected to an external vacuum pump. The vacuum interface 6 draws negative pressure into the sealed transparent sealed cavity 2, and uses the pressure difference to force out air, oil and other impurities in the shrinkage pores and micropores. This creates favorable conditions for the injection and deep penetration of the anaerobic adhesive, ensuring that the adhesive can completely fill the internal space of the defect. After curing, it forms a permanent seal that runs through the entire defect, fundamentally solving the problem of incomplete sealing in traditional surface coating methods. This greatly reduces the scrap rate of casting 1. The transparent sealed cavity 2 and observation window 7 are made of transparent rigid plastic plates. Operators can intuitively monitor the injection, flow, penetration and final curing of the anaerobic adhesive throughout the process. This visualization function makes the repair process controllable and reliable, avoids blind operation, and allows for immediate judgment of the repair effect, ensuring the consistency of product quality.

[0022] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum-assisted anaerobic adhesive repair device for leaks in castings, characterized in that, include: A transparent sealing cavity (2) is connected to the surface of the casting (1). The bottom edge of the transparent sealing cavity (2) is provided with a sealing groove (3), and the top of the transparent sealing cavity (2) is provided with a sealing cover plate (4). The top of the sealing cover plate (4) is provided with an injection port (5) for injecting anaerobic adhesive, a vacuum interface (6) for connecting an external vacuum pump, and an observation window (7). One end of the vacuum interface (6) extends into the interior of the transparent sealed cavity (2), and the vacuum interface (6) is provided with a valve (8) and a sealing ring (9).

2. The vacuum-assisted anaerobic adhesive repair device for leak points in castings (1) according to claim 1, characterized in that, The transparent sealed cavity (2) and the observation window (7) are both made of transparent rigid plastic sheet with a thickness of ≥10mm.

3. The vacuum-assisted anaerobic adhesive repair device for leak points in castings (1) according to claim 2, characterized in that, The transparent rigid plastic sheet is a polycarbonate sheet or a polymethyl methacrylate sheet.

4. The vacuum-assisted anaerobic adhesive repair device for leak points in castings (1) according to claim 1, characterized in that, The sealant groove (3) is pre-coated with high-strength epoxy structural adhesive.

5. The vacuum-assisted anaerobic adhesive repair device for leak points in castings (1) according to claim 1, characterized in that, The vacuum interface (6) and the sealing cover plate (4) are connected by a threaded seal, and the valve (8) is a ball valve or a needle valve.

6. The vacuum-assisted anaerobic adhesive repair device for leak points in castings (1) according to claim 1, characterized in that, The transparent sealed cavity (2) is rectangular, circular or polygonal in shape.

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