The fabrication and installation of double-sided aluminum foil composite ducts involve several key steps to ensure quality, efficiency, and proper performance. Here's a detailed and well-structured overview of the process:
1. **Layout and Marking**
Before any cutting begins, it is essential to plan the layout carefully. The size of the sheet material and the dimensions of the duct should be considered to minimize waste and reduce the number of seams. Proper arrangement ensures that the material is used efficiently while maintaining structural integrity.
2. **Cutting and Forming**
For rectangular ducts, the four walls can be formed from a single sheet by making three 90-degree cuts and two 45-degree cuts. Alternatively, two full sheets can be used with additional trimming and joining. This method allows for flexibility depending on the available materials and project requirements.
3. **Joint Sealing and Taping**
Once the sections are assembled, the 45-degree corners should be sealed using aluminum foil tape. Each side of the tape should be at least 20 mm wide to ensure a secure and airtight seal. After taping, use a square and measuring tape to check for verticality and diagonal alignment. The duct sections should be kept upright until fully cured and secured.
4. **Flange Bonding and Sealing**
After shaping the duct, the flanges at both ends must be bonded properly. Check the flatness and diagonal deviation of the flange faces to meet industry standards. When the duct is fully assembled, apply sealant to the inner corners and flange joints to prevent exposure of the foam insulation and adhesive. Make sure the surfaces are clean, free from oil, water, dust, and debris before applying the sealant.
5. **Duct Reinforcement**
Reinforcement is necessary to maintain the structural stability of the duct. Refer to Table 3.6.1 for the recommended number of lateral and longitudinal reinforcement points. The flange joint can act as a natural reinforcement point. Proper reinforcement helps prevent deformation and ensures long-term durability.
By following these steps carefully, the installation of double-sided aluminum foil composite ducts can be completed efficiently, resulting in a high-quality, durable, and energy-efficient system.
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Hydraulic DC motor is a device that converts electrical energy into hydraulic energy. The power transmission through the hydraulic system has the characteristics of high efficiency and stability. Therefore, they are often used in applications requiring high torque and low speed movement, such as industrial equipment, the automotive industry, agricultural machinery and ships. The power transmission through the hydraulic system has the characteristics of high efficiency and stability.
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