Lamp Reflector

Metal Spun Lampshade – Technical Specification

1. General Information

Industry Classification:
Lighting Equipment Manufacturing (Luminaire Industry)

Component Name:
Metal Lampshade / Reflector Housing

Manufacturing Process:
CNC Metal Spinning with Secondary Precision Machining and Surface Treatment

2. Material Specifications

Available Base Materials:

• Aluminum Alloys: AA 6063 / 6061 / 5052
• Stainless Steel: AISI 304 / 316L
• Copper: T2 / TP2

(Default configuration: Aluminum Alloy 6063, compliant with applicable GB and equivalent international standards)

Mechanical Properties (Typical)

• Aluminum Alloy:
  Yield Strength ≥110 MPa
  Tensile Strength ≥205 MPa
  Characteristics: low density, excellent corrosion resistance, good formability
• Stainless Steel:
  Yield Strength ≥205 MPa
  Tensile Strength ≥520 MPa
  Characteristics: high strength, superior corrosion and thermal resistance
• Copper:
  Yield Strength ≥60 MPa
  Tensile Strength ≥205 MPa
  Characteristics: high reflectivity, excellent thermal conductivity

Nominal Wall Thickness:
2.0 mm

Thickness Tolerance:
≤ ±0.12 mm (controlled during spinning deformation)

3. Dimensions & Geometric Accuracy

Overall Dimensions:
Ø680 mm × H280 mm

Dimensional Tolerances:
In accordance with GB/T 1804-2000, Grade m

• Roundness ≤0.3 mm
• Perpendicularity ≤0.2 mm/m
• Curved surface profile tolerance ≤0.5 mm

Surface Roughness:
Ra ≤0.8 μm after final surface treatment

4. Surface Treatment & Functional Performance

Coating / Plating Options:

• Zinc coating for steel and aluminum substrates
• Nickel plating or chrome plating for copper substrates

Coating Thickness & Performance:

• Zinc coating ≥80 μm
  • Neutral salt spray resistance ≥120 hours
• Nickel / Chrome plating ≥50 μm

Optical Performance (Reflectivity):

• Aluminum / Stainless steel ≥85%
• Copper ≥90%

5. Manufacturing Process Description

5.1 Core Forming Process

The lampshade is formed using CNC-controlled multi-pass metal spinning, ensuring seamless, axisymmetric geometry without welding.

Typical Process Parameters:

• Aluminum / Stainless steel spindle speed: 500–900 rpm
• Copper spindle speed: 600–1000 rpm
• Single-pass deformation: controlled to maintain wall thickness uniformity

5.2 Raw Material Preparation

Material-specific degreasing and surface preparation are applied prior to spinning.
Sheets are leveled to achieve flatness ≤0.2 mm/m to ensure consistent forming behavior.

5.3 CNC Process Control

• 3D modeling performed using UG (Unigraphics) CAD software
• Tool paths generated via CAM and executed under closed-loop CNC control
• Critical interfaces and mounting edges are finish-machined, achieving perpendicularity ≤0.1 mm/m

5.4 Post-Processing

Deburring → compressed air cleaning → coating or plating → polishing → dimensional and surface re-inspection.

6. Quality Assurance & Inspection

6.1 Quality System

Manufacturing and inspection are conducted under ISO 9001:2015 Quality Management System.

6.2 Incoming Material Inspection

• Chemical composition verified by spectrometric analysis
• Mechanical properties tested per material standard
• Ultrasonic testing (UT) to confirm absence of internal defects

6.3 In-Process Quality Control

Seven critical inspection points, including:

• Spinning conformity (contact ratio ≥98%)
• Wall thickness and dimensional inspection
• Surface pre-treatment verification
• Coating thickness and adhesion testing
• Reflectivity testing
• Edge condition and chamfer inspection
• Radiographic testing (RT), Level II acceptance

6.4 Final Inspection

Sampling inspection in accordance with GB/T 2828.1-2012 (AQL 2.5).
Each qualified product is delivered with traceability identification and full inspection documentation.

7. Production Capacity & Lead Time

Daily Output:

• Aluminum / Stainless steel: 40 pcs/day
• Copper: 30 pcs/day

Monthly Capacity:

• Aluminum / Stainless steel: up to 2,400 pcs
• Copper: up to 1,800 pcs

Standard Lead Time:

• Small batch orders: 8–12 working days
• Large batch orders: 15–20 working days
• Expedited orders: 5–7 working days

8. Custom Manufacturing Capability

Customizable Parameters:

• Diameter range: Ø400–1200 mm
• Height range: 150–500 mm
• Material grade and surface treatment

Customers are required to provide luminaire design data, operating conditions, and installation requirements.
Technical feasibility assessment completed within 3 working days.

9. Application Scope

9.1 Primary Applications

Protective and optical distribution components for:

• Stadium high-mast luminaires
• Floodlights and high-power industrial lighting systems

9.2 Operating Conditions

• Aluminum: −40°C to 150°C
• Stainless steel: −70°C to 450°C
• Copper: −20°C to 250°C

Fully compatible with high-power LED light sources.

9.3 Installation Interface

Designed to interface with Ø680 mm × H280 mm luminaires.
Custom curved geometries supported; 3D models and light source specifications required.

10. After-Sales Support

Warranty Period:

• Aluminum / Copper: 36 months
• Stainless steel: 48 months

Technical Support:
Pre-sales engineering consultation, installation guidance, material-specific maintenance recommendations.

Service Response:
24-hour response; corrective action within 1–3 working days.

Post-Warranty Services:
Paid repair, recoating, refurbishment, and long-term inspection agreements available.

Contact us and Request A Quote