UHV Shield AL1050

Ultra-High Voltage Transmission Shield (UHV Shield AL1050) – Product Technical Specification

1. Core Specifications

• Industry: Ultra-High Voltage Transmission (UHV Transmission)
  
• Product Name: UHV Shield
  
• Material: AL1050 Aluminum Alloy (Standard: GB/T 3880.1-2012)
  
• Material Properties: Yield strength ≥ 30 MPa, Tensile strength ≥ 90 MPa, Elongation ≥ 25%, Density 2.70 g/cm³, Electrical conductivity ≥ 62% IACS, Excellent corrosion resistance
  
• Thickness: 2.0 mm, Tolerance ±0.12 mm
  
• Surface Finish: Polished (Polishing)
  
• Polishing Parameters: Surface roughness Ra ≤ 0.4 μm, Gloss ≥ 90 GU, Free of scratches, oxidation spots, and residue
  
• Dimensions: Ø510 mm × H105 mm
  
• Dimensional Tolerance: Complies with GB/T 1804-2000 m-grade standard, Roundness ≤ 0.3 mm, Flatness ≤ 0.2 mm/m
  

2. Manufacturing Process

• Core Process: CNC Metal Spinning + Mechanized Progressive Polishing
  
• Equipment: CNC1250 Metal Spinning Lathe, Fully Automated High-Precision Polishing Machine
  
• Key Parameters:
  
  • Spindle speed: 500–900 r/min
    
  • Roller feed rate: 4–8 mm/s
    
  • Single pass deformation: 0.4–0.6 mm
    
  • Total deformation: 1.9–2.1 mm
    
  • Polishing: 3 stages
    
    • Rough: 1800 r/min (800# wheel)
      
    • Medium: 2400 r/min (1500# wheel)
      
    • Fine: 3000 r/min (2000# wheel)
      
  • Total polishing time: 7–11 min per piece
    
• Auxiliary Procedures: Alkali degreasing → Acid brightening → Water neutralization → Drying & flattening (Flatness ≤ 0.2 mm/m) → CNC spinning → Deburring (3000 r/min) → 3-stage polishing → Ultrasonic cleaning → Drying → Dimensional inspection
  

3. Quality Control

• Standards Compliance: ISO9001:2015 Quality Management System, GB/T 3880.1-2012 Aluminum Alloy Standard, UHV Transmission Equipment Protective Specifications
  
• Raw Material Inspection: Spectrochemical composition testing (Al ≥ 99.50%, Element tolerance ≤ ±0.05%), Mechanical property testing, Ultrasonic testing for internal defects
  
• In-Process Inspection: Metal spinning surface conformity ≥ 98%, Dimensional accuracy via CMM, Full circumference wall thickness measurement (±0.01 mm), Surface roughness & gloss inspection, Edge chamfer R ≥ 1.5 mm
  
• Final Inspection: Sample according to GB/T 2828.1-2012 (AQL2.5), including dimension, surface quality, electrical conductivity, and corrosion resistance (Neutral Salt Spray ≥ 96 h). All certified products include traceable quality codes and full inspection reports
  

4. Production Capacity & Delivery

• Capacity: Daily 60 units, Monthly 1800 units, Multi-equipment parallel production supported
  
• Lead Time: Standard order 5–8 working days, Bulk order (≥100 units) 8–12 working days, Urgent order 3–5 working days
  
• Packaging & Delivery: Dust-proof film + Pearl cotton + Custom cardboard + Wooden pallet (30 units per pallet); Domestic logistics 2–6 working days, On-site delivery available with 3-day prior notice
  
• Customization Range: Dimensions Ø300–800 mm × H50–200 mm; Material: AL1060 / AL5052; Requires equipment adaptation parameters and operating conditions
  

5. Application Scenarios

• Primary Applications: Critical protective component for UHV transmission systems; suitable for 1000 kV+ substations and transmission tower insulator strings, bushing terminals, and bus connections; ensures uniform electric field distribution, anti-flashover protection, and insulation safety
  
• Operating Conditions: Temperature -40℃~120℃, Outdoor high-humidity, dusty, strong UV environment; Rated voltage ≥ 1000 kV, Withstand electric field breakdown ≥ 36 kV/mm
  

6. Extended Applications

• High-voltage distribution equipment (220 kV / 500 kV substations) shielding components
  
• Transformer outgoing line shields
  
• Rail transit high-voltage power supply shielding
  
• Renewable energy (solar / wind) high-voltage combiner shields
  
• AL1050 aluminum alloy provides excellent electrical and thermal conductivity, corrosion resistance, and formability, suitable for medium to high-voltage equipment protective shielding
  

7. After-Sales Service

• Warranty: 24 months; Free replacement or repair for defects including dimensional deviations, material inconsistency, polishing defects, corrosion failure, or shielding performance issues; Logistics and on-site service covered
  
• Technical Support: Pre-sales selection advice, installation manuals, dimensional drawings, material / performance reports, phone/video installation guidance
  
• Response & Issue Resolution: 24-hour response, solution within 1–3 working days, dedicated personnel follow-up
  
• Post-Warranty Services: Paid repair, polishing refurbishment, Long-term maintenance contracts available, periodic inspection and maintenance advisory for power equipment manufacturers

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