1. Material properties and process positioning
Core characteristics
DDQ aluminum plate is called deep-drawing quality aluminum plate. This aluminum plate is specially designed for high-difficulty stamping. The elongation is ≥53% (far exceeding the 45% of ordinary materials), and the grain is refined to 7.0-8.0 to improve plasticity.
Surface finish Ra≤0.8μm, hardness≤170 HV (mainly soft state O state), reducing the risk of stamping cracking, and meeting the deep drawing requirements of processing ratio ≥2.0.
2. Typical alloy series
| Alloy Series | Representative Grades | Material Temper | Application Areas |
|---|---|---|---|
| 1xxx Series | 1050, 1060, 1100 | O, H18, H19 | Milk powder easy-tear cover, battery soft connection, soft package aluminum film |
| 3xxx Series | 3003, 3004, 3104 | O, H14, H19 | Power battery shell, can cover, lighting parts |
| 5xxx Series | 5052, 5182 | T4, T6, H112 | Automobile wheels, high-precision stamping parts |
| 6xxx Series | 6061 | O, T4, T6 | Automotive wheels, medical device components, high-load structural parts |
3.Technical advantages and production control
Key process requirements
Heat-saturation technology: eliminate internal stress, reduce intracrystalline segregation, and improve tensile properties (elongation can reach 20%);
Filtration technology: ensure that the aluminum plate is free of impurities and the surface defect rate is ≤0.5%;
Precision rolling: The foil rolling mill can achieve an ultra-thin thickness of 0.02mm, and the accuracy error is ≤±0.005mm.
4.Typical application scenarios
| Industry | Specific Application | Performance Adaptability |
|---|---|---|
| New Energy Vehicles | Power battery housing 3003 aluminum plate | Lightweight, 5–7 stampings without cracking |
| Packaging Industry | Can lid (3104-H19 aluminum plate) | Elongation ≥ 20%, smooth surface without scratches |
| Home Appliance Manufacturing | Tableware, electrical appliance housing (1xxx series aluminum plate) | Thickness 0.15–3.5mm, customized stamping solution |
| General Industry | Medical device components, electronic housing (6061 aluminum plate) | Tensile strength ≥ 310 MPa, excellent corrosion resistance |
5.Selection and alternative solutions
Scenario where DDQ aluminum plate is preferred: processing ratio ＞1.5, multiple stretching or high surface quality requirements (such as can lid material); Alternative materials: EDDQ (ultra-deep stamping aluminum plate) is suitable for extreme working conditions with processing ratio ＞3.0 (such as aviation precision parts)
