D1000 H1400 Vacuum Impregnation Equipment for Aluminum Castings Sealing porous castings
Introduction
Vacuum impregnation is an effective technology used to solve leakage problems in aluminum castings. By pressurizing a sealant into the porous areas of castings and curing it, the process ensures that the castings are sealed and capable of holding liquids or gases. This method is widely used in industries like automotive, military, and electronics, providing an ideal solution for improving the integrity and durability of aluminum castings.
Application
Vacuum impregnation technology is essential for aluminum castings that are prone to porosity, leading to leakage and reduced performance. The process is ideal for:
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Sealing of porous aluminum castings
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Leakage repair in castings
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Improving insulation properties of electrical components
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Pretreatment for galvanizing and plating
By sealing voids within the aluminum material, vacuum impregnation ensures that components are leak-proof and meet industry standards for performance and reliability.
Vacuum Impregnation Process
The vacuum impregnation process involves several stages, each designed to ensure the optimal application of sealant and thorough cleaning of castings. Below is an outline of the process:
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Impregnation Tank
The parts are loaded into a basket, which is then submerged in the impregnation tank. A vacuum is created, reducing pressure to -0.099Mpa, and maintained for 2 minutes. The resin is drawn into the aluminum castings to seal the porous areas. The resin level is controlled, ensuring full penetration for 10 minutes.
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Centrifugal Swing Dryer
After impregnation, the parts are moved to a centrifugal swing dryer, where excess resin is removed through centrifugal force, ensuring the castings aren’t overly coated.
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Wash Tanks I & II
The castings are cleaned in two wash tanks with cold water, using pneumatic mixing to ensure thorough cleaning.
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Rotation Washing and Rinsing Tank
This stage involves rotating the basket both clockwise and anti-clockwise, while high-pressure water rinses the parts for a final cleaning.
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Hot Water Curing Tank
Finally, the parts are placed in a hot water curing tank at 90℃ for 10 minutes, where the resin is hardened, providing a leak-proof seal.
Technical Parameters
| Component |
Specifications |
| Impregnation Tank Size |
φ1000×H1400mm (effective height) |
| Vacuum Pressure |
0.098Mpa |
| Centrifugal Swing Dryer Capacity |
Vertical speed: 0-110 rpm |
| Wash Tank Size |
L1000×W1000×H1200mm |
| Rotation Rinsing Tank Size |
L1300×W1000×H1200mm |
| Hot Water Curing Tank Size |
L1100×W1100×H1500mm |
| Heating Method |
Electrical heating tubes, 5KW per tube |
| PLC Control System |
Omron touch screen, Mitsubishi PLC |
Advantages of Vacuum Impregnation for Aluminum Castings
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Leak-proof Sealing: Vacuum impregnation effectively seals porous aluminum castings, ensuring they are resistant to leakage.
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Improved Durability: The resin used in the impregnation process enhances the mechanical properties of the castings, improving their durability.
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Uniform Quality: The automated process reduces human error, ensuring consistency and high-quality production.
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Efficiency: With fully automated systems for vacuum creation, drying, and curing, the process is streamlined for higher productivity.
Conclusion
Vacuum impregnation equipment is a critical solution for aluminum castings, ensuring leak-free performance and improving overall casting quality. Whether for automotive, military, or industrial applications, this technology helps manufacturers meet stringent standards for durability and reliability.
By incorporating vacuum impregnation, aluminum castings become more resistant to leakage, offering an ideal solution for a range of industrial needs.
