UHV Shield-AL5052

Application – UHV Power Transmission Systems (≥1000 kV)

This UHV aluminum shielding component is designed for ultra-high voltage transmission systems (≥1000 kV), providing electric field equalization, insulation protection, and anti-flashover performance in outdoor power grid environments such as substations, transmission towers, bushings, and busbar connections.

Material – AL5052 High-Strength Aluminum Alloy

Manufactured from AL5052 aluminum-magnesium alloy (GB/T 3880.1-2012), offering a superior balance of strength, corrosion resistance, and long-term outdoor durability compared to pure aluminum grades (e.g., AL1060).

• Yield strength: ≥190 MPa
• Tensile strength: ≥260 MPa
• Elongation: ≥12%
• Density: 2.68 g/cm³
• Thickness: 2.0 mm (±0.12 mm)

Ideal for harsh UHV outdoor environments with humidity, UV exposure, and pollution.

Product Dimensions & Structural Accuracy

• Size: Ø320 mm × H49 mm
• Roundness: ≤ 0.3 mm
• Flatness: ≤ 0.2 mm/m
• Standard: GB/T 1804-2000 (Grade m)

Ensures stable assembly performance in high-voltage electrical equipment systems.

Manufacturing Process – CNC Metal Spinning + Precision Polishing

Produced using CNC metal spinning (CNC800 platform) combined with multi-stage mechanical polishing, ensuring high structural precision and surface stability.

Core Process Flow:
Degreasing → acid cleaning → CNC spinning → deburring → multi-stage polishing → ultrasonic cleaning → final inspection

Process Advantages:

• Uniform forming with controlled deformation
• Stable geometry for large-scale batch production
• High surface consistency for electrical performance requirements

Surface Engineering – High-Gloss Electrical Shield Finish

• Mechanical multi-stage polishing (Ra ≤ 0.4 μm)
• Gloss level ≥ 90 GU
• Free of scratches, oxidation spots, and oil contamination
• Edge chamfering (R ≥ 1.5 mm) for stress reduction

Ensures optimal electric field distribution and surface insulation performance.

Precision Control & Quality Standards

Manufactured under strict quality systems for UHV power transmission components:

• ISO 9001:2015 quality management system
• GB/T 3880.1 aluminum alloy standard
• 100% dimensional inspection on critical parameters
• CMM-based geometric verification
• Full-circumference wall thickness control (±0.01 mm)
• Salt spray test ≥ 96 hours (corrosion resistance validation)

Engineering Performance – UHV Electrical Functionality

Compared with AL1060 aluminum components, AL5052 provides:

• Higher mechanical strength for structural stability
• Improved corrosion resistance for outdoor substations
• Better long-term dimensional reliability
• Reduced risk of flashover in polluted environments

Core functions include:

• Electric field equalization
• Anti-pollution flashover protection
• Insulation performance enhancement

Application Scenarios

Widely used in ultra-high voltage and high-voltage power systems:

• UHV substations (≥1000 kV)
• Transmission line fittings
• Insulator string shielding systems
• Transformer outlet shielding components
• Offshore wind power high-voltage collector systems
• Rail transit power supply systems

Production Capability & Delivery

• Monthly capacity: ~2,100 pcs
• Daily output: ~70 pcs
• Lead time: 5–7 days (standard), 7–11 days (batch orders)
• Emergency production: 3–5 days available
• Packaging: anti-dust + foam + wooden pallet (40 pcs/pallet)

Custom Engineering Capability

• Diameter range: Ø200–600 mm
• Height range: 30–150 mm
• Optional materials: AL1060 / AL6061 / AL5052 variants
• OEM customization based on voltage level and interface parameters

After-Sales & Technical Support

• 24-month quality warranty
• Free replacement for dimensional, material, or performance issues
• Technical documentation (drawings, test reports, installation guides)
• 24-hour response, 1–3 day technical solution turnaround
• Long-term maintenance and refurbishment services available

Get a Quote

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