Practical Guide to Machining Aluminum Plates: Techniques & Tips
Aluminum plate machining is a core process in modern manufacturing, offering lightweight durability and excellent machinability. Whether you’re working on aerospace components or automotive parts, understanding proper techniques ensures precision and cost-efficiency. Here’s what you need to know
Why Choose Aluminum Plates for Machining?
Lightweight & Strong: The weight of aluminum plate is 1/3 of steel but maintain structural integrity.
Corrosion Resistance: Natural oxide layer protect against rust.
Heat Conductivity: Ideal for heat-exchange applications.
Machinability: Softer than steel, reducing tool wear and energy costs.
Key Machining Techniques for Aluminum Plate
- Use carbide or diamond-coated tools for smooth finish.
- Optimal RPM: 500 to 18,000 (adjust based on plate thickness).
- Coolant Tip: Apply water-soluble coolants to prevent chip welding.
Drilling & Tapping
- Drill Speed: 200 to 300 SFM (surface feet per minute).
- Clear Chips Frequently: Avoid built-up edge (BUE).
- Lubricate Threads: Use WD-40 or aluminum-specific tapping fluid.
Laser Cutting
- Wavelength: CO₂ lasers (9–11 µm) work best.
- Assist Gas: Nitrogen prevents oxidation for clean edges.
Common Challenges & Solutions
| Issue | Cause | Fix |
| Burr Formation | Dull tools | Sharpen/replace tools: increase RPM |
| Warping | Heat buildup | Use climb milling: apply coolant |
| Surface Scratches | Improper fixturing | Use soft jaws: add protective film |
Post-Machining Treatments
Anodizing: Enhance corrosion resistance; allows color dyeing.
Brushing/Polishing: Creates decorative finishes for consumer products.
Powder Coating: Add scratch-resistant protective layers.
Applications of Machined Aluminum Plate
Automotive: Engine brackets, battery trays.
Construction: Architectural cladding, solar panel frames.
Electronics: Heat sinks, device enclosures.
Why to choose our company？Because we provide
Precision-cut aluminum plates (grades 6061, 5052, 7075).
Custom CNC machining services with ±0.01mm tolerance.
One-stop solutions from raw materials to finished parts.
