Cold-rolled embossed aluminum sheet

1. Material Definition and Core Technology

1. Substrate Selection

• Alloy system：

  Series	Representative Grade	Core Features	Typical Use Cases
  1XXX	1060/1100	Pure aluminum (≥99% Al), excellent electrical and thermal conductivity	Electronic Foil, Packaging
  3XXX	3003/3105	Mg-reinforced, high corrosion resistance (salt spray > 2000h)	Curtain walls, decorative panels
  5XXX	5005/5705	Mg-Si alloy, tensile strength ≥ 270 MPa	Automotive structural components
  6XXX	6061/6063	Al-Mg-Si heat-treatable alloy, strength ≥ 310 MPa	Aerospace Components, High-End Equipment

• Cold-rolled embossing process

  • Mold Type: Linear Pattern (HRC 58-62), 3D Pattern (Multi-stage progressive stamping)

  • Residual Stress: Surface compressive stress 50-100 MPa (suppresses microcracks)

  • Rolling temperature: 0-30°C (to prevent oxide layer thickening)

  • Reduction rate: ≥50% (reduction per pass)

  • Surface Roughness: Ra 0.8-3.2 μm (depends on pattern depth)

  • Cold rolling parameters：

  • Embossing：

II. Performance Advantage Comparison Table

III. Technical Adaptation Strategies for Key Application Areas

1. Building Curtain Wall

• Constructed with 3XXX series alloy and fluorocarbon coating (PVDF film thickness ≥ 40 μm), meeting EN 13501-1 A2 fire safety standards.

• Design recommendation: minimum support spacing ≤ 2.5m; sheet thickness ≥ 2mm.

• Pain PointsWind load, weather resistance, fire resistance

• Solution：

• New energy vehicle battery pack

  • 6061-T6 aluminum alloy + micro-arc oxidation ceramic coating (hardness HV 800), weight reduced by 30%.

  • Copper-plated surface (thickness 50 μm) provides EMC shielding compliant with CISPR 25 Class 5.

  • Pain Points: Lightweight, EMI shielding, impact protection

  • Solution：

• Precision Instrument Panel

  • XXX series alloy + oleophobic coating (contact angle > 110°), vibration attenuation rate > 80%.

  • Surface resistance < 1×10⁶Ω, compliant with ISO 18184 ESD standards.

  • Pain PointsVibration control, cleanliness, and static protection

  • Solution：

IV. Advanced Craftsmanship Directions

1. Surface functionalization

• Nanoimprint Lithography: Superhydrophobic coating (contact angle > 150°), self-cleaning efficiency improved by 90%.

• Laser CladdingWC-Co hard alloy coating (hardness > 1800HV), extending service life by 5 times.

• Green Manufacturing

  • Chromium-free coloring: Pure water electrolysis technology (reduces wastewater discharge by 95%).

  • Closed-loop recyclingWaste pyrolysis recovery rate > 98%, carbon emission intensity reduced by 40%.

5. Selection Decision Tree

开始选秀→需求场景（建筑/汽车/家电）→关键性能指标（强度/耐候/重量）→合金系选择→表面处理工艺→模具定制→样品验证

Conclusion
Through the synergistic innovation of material science, manufacturing processes, and surface technologies, cold-rolled embossed aluminum sheets have become a core material in high-end manufacturing. Their technological trajectory continues to evolve toward...High-strength lightweight(such as Al-Mg-Li alloys),Long-lasting(> 50 years weather resistance),All-in-One(Electromagnetic shielding + self-cleaning) evolution drives product iteration across construction, transportation, and electronics.