I. Manufacturing Process
The socket panel's aluminum shell features a square frame with thin walls. Balancing insulation compatibility, assembly precision, and aesthetic appeal, the core process utilizes aluminum profile extrusion/die casting + CNC precision machining + surface treatment. The specific steps are as follows:
1. Raw Material Selection: 6063 aluminum alloy is selected (good extrusion formability, excellent anodizing effect, suitable for panel appearance requirements); for mass production, ADC12 die-cast aluminum can be selected (lower cost, suitable for complex snap-fit structures).
2. Blank Forming:
◦ Profile Extrusion: A custom square frame extrusion die is used to heat aluminum rods to 480~520℃ to extrude profiles. After sawing to a fixed length, the square frame is formed by bending/assembling, reducing subsequent machining allowances.
◦ Die Casting: For mass production, a die-casting process is used to cast the entire frame blank, integrally forming the snap-fit and screw holes, requiring only precision machining of the assembly surfaces.
3. CNC Precision Machining:
◦ A three-axis CNC machining center is used to complete drilling and tapping of mounting holes, milling of snap-fit grooves, cutting of wiring terminals, and chamfering and deburring. The panel mating surface is precision milled and polished to ensure a perfect fit with the socket core.
◦ Micro-cutting technology is used for thin-walled areas to avoid machining deformation; pneumatic tooling fixtures are used in mass production to improve clamping consistency.
4. Surface Treatment:
◦ Natural Anodizing: An oxide layer thickness of 8~12μm enhances corrosion resistance (resistance to indoor moisture and oil stains) and insulation, while retaining the metallic texture of aluminum alloy.
◦ Sandblasting: Fine sandblasting is applied to the exterior surface to create a matte finish, preventing glare and affecting the user experience.
◦ Insulating Coating: An epoxy insulating coating, 5~10μm thick, is applied to the internal contact areas to prevent leakage risks.
5. Inspection and Trial Assembly: Inspect dimensional accuracy and hole position accuracy. Perform assembly and trial fitting with the socket inner core and wall mounting base to verify the stability of insertion, removal, and fixation.
II. Processing Accuracy
This aluminum shell must meet the standardized assembly requirements of the socket panel. The core accuracy indicators are as follows:
1. Dimensional Accuracy:
◦ Frame outer dimension tolerance: ±0.1mm, suitable for standard socket panel installation spaces such as 86-type/118-type.
◦ Mounting hole position accuracy: ≤0.05mm, hole diameter tolerance H7 grade (+0.018/0mm), ensuring precise fit with the screws of the wall box.
◦ Clip groove dimensional tolerance: ±0.03mm, ensuring a firm connection with the socket inner core.
◦ Wiring port diameter tolerance: ±0.05mm, suitable for power cable routing requirements.
2. Geometric Tolerances:
◦ Panel mating surface flatness: ≤0.05mm/100mm, to avoid gaps with the wall.
◦ Frame diagonal parallelism: ≤0.1mm, to ensure the regularity of the square frame.
◦ Hole perpendicularity to frame side: ≤0.05mm, to ensure no tilting after screw installation.
3. Surface Finish:
◦ Appearance surface roughness Ra1.6~3.2μm (after anodizing), to ensure a smooth feel and visual quality.
◦ Assembly mating surface roughness Ra0.8~1.6μm, to reduce the clearance with the inner core.
◦ Non-appearance surface roughness Ra6.3μm, to meet basic usage requirements.
III. Industry Applications
These aluminum socket panels, with their lightweight, fire-retardant, and superior texture, are primarily used in the electrical engineering field, specifically in the following scenarios:
1. Civil Building Electrical Engineering:
◦ Aluminum wall switch and socket panels (Type 86/118) replace traditional plastic panels, enhancing the aesthetics of home/office spaces. Aluminum alloy offers superior high-temperature resistance and flame retardancy compared to plastic.
◦ Aluminum floor socket panels are impact-resistant and wear-resistant, suitable for use on floors frequently walked on.
2. Industrial Electrical Engineering:
◦ Aluminum industrial socket panels for workshops/factories are corrosion-resistant and oil-resistant, suitable for industrial environments. The heat dissipation of aluminum alloy reduces the temperature rise of high-power sockets.
◦ Explosion-proof socket panels (after explosion-proof processing) are used in flammable and explosive environments such as chemical plants and mines, meeting explosion-proof safety standards.
3. Smart Home Sector:
◦ Aluminum casing for smart sockets/smart switches, adaptable to installation spaces with built-in IoT modules. The metal casing also provides electromagnetic shielding, protecting internal circuitry from interference.
◦ Aluminum casing for whole-house smart control panels; the aluminum alloy material enhances the premium feel of smart home products.
4. Outdoor Electrical Sector:
◦ Aluminum casing for outdoor waterproof socket panels; the anodized layer enhances weather resistance, resisting sun and rain corrosion, suitable for patios, terraces, charging stations, and other similar applications.
