Cold-Rolled Patterned Aluminum Alloy

Cold-Rolled Patterned Aluminum Alloy

1. Material Definition & Process Principle

Cold-rolled patterned aluminum alloy is a material produced by cold rolling technology to create periodic patterns on the surface of aluminum sheets. Its core process involves:

• Using aluminum base materials (e.g., 1060, 3003, 5005 alloys)

• Cold rolling deformation to form patterns via patterned rollers

• Post-processing including annealing and surface treatments (anodizing, spraying)

Pattern depth ranges from 0.1–1.5mm, with customizable width and spacing.

2. Core Production Processes

（1）Cold Rolling Forming

• Temperature Control: Rolling conducted below recrystallization temperature (≈250–400°C)

• Roller Design: High-precision patterned rollers ensure dimensional consistency (±0.05mm tolerance)

• Annealing Treatment: Low-temperature annealing (150–200°C) to eliminate work hardening and restore plasticity

（2）Surface Treatments (Optional)

• Anodic Oxidation: Generates dense oxide film (3–15μm thickness) for enhanced corrosion resistance and aesthetics

• Spraying: Applies polyurethane, fluorocarbon coatings for color and weather resistance

• Electroplating: Deposits copper, nickel, etc., for conductivity or special texture

3. Key Performance Indicators

• Coefficient of thermal expansion: 23.1×10⁻⁶/°C

• Density: 2.7 g/cm³

• Sheet thickness: 0.5–5mm (patterned areas thinned) |
  | Mechanical Properties | - Tensile strength: ≥140 MPa (1060 alloy)

• Yield strength: ≥80 MPa

• Hardness: HV 30–80 (local hardness affected by patterns) |
  | Corrosion Resistance | - Salt spray test: ≥1000 hours (post-anodizing)

• pH stability: 2–12 |
  | Surface Characteristics | - Pattern uniformity: ±5% deviation

• Texture: Matte/satin finish

• Slip resistance: 30–50% improvement |

4. Pattern Types & Processing Advantages

Processing Advantages:

• No electroplating required: Natural matte finish reduces maintenance costs

• Composite processing: Combines with anodizing/spraying for multi-functional integration (e.g., antimicrobial coatings)

• High material utilization: Over 95% yield rate compared to traditional stamping processes

5. Typical Application Fields

（1）Architecture & Decoration

• Building Facades: Ultra-thin cold-rolled patterned aluminum sheets (0.8–1.2mm) for lightweight and aesthetic exterior walls

• Interior Decoration: Elevator car walls, hotel lobbies, decorative elements with patterned textures

（2）Transportation

• Automotive Components: Door trims, wheel covers with patterned grips for enhanced aesthetics and slip resistance

• Marine Applications: Wave-patterned aluminum sheets for ship decks with improved weather resistance and impact resistance

（3）Industrial Equipment

• Protective Covers: Grid-patterned sheets for machine guards and robotic enclosures (combining protection with heat dissipation)

• Pipeline Supports: Diamond-patterned structures to reduce dust accumulation and simplify cleaning

（4）Consumer Products

• Home Appliances: Patterned trim on refrigerators, washing machines for fingerprint-resistant surfaces

• Sports Gear: Yoga mats, dumbbell handles with slip-resistant textures