Deep Drawn Components & Metal Stamping Manufacturer
Expert deep drawing services for complex shapes. We produce seamless motor housings, sensor enclosures, and battery cans with draw ratios up to 3:1. Save 30-50% with our direct factory pricing.
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Deep Drawing vs. CNC Machining
Why switch to deep drawing? For high-volume production of hollow parts, deep drawing offers unbeatable cost efficiency and material savings compared to machining.
| Feature | Deep Drawing | CNC Machining |
|---|---|---|
| Material Utilization | High (80-90%) - Low Scrap | Low (30-50%) - High Scrap |
| Production Speed | Very Fast (Seconds/part) | Slow (Minutes/part) |
| Unit Cost (High Volume) | Low ($) - Ideal for >5k pcs | High ($$$) - Linear cost |
| Part Strength | Improved (Work Hardening) | Unchanged (Base Material) |
| Seamless Construction | Yes - Monolithic Part | Yes - But costly for deep pockets |
| Ideal Applications | Cans, Housings, Caps, Cups | Low volume, Complex 3D geometry |
Solving Common Deep Drawing Defects
Deep drawing is complex. We use advanced AutoForm simulation and 20+ years of die design experience to prevent common failures before they happen.
Wrinkling (Flange & Wall)
Cause: Insufficient blank holder force or incorrect lubrication, causing material to buckle under compressive stress.
Shengjie Solution:
- Optimize blank holder pressure using nitrogen springs.
- Use draw beads to control material flow.
- Adjust lubrication viscosity for specific material grades.
Tearing (Bottom & Corner)
Cause: Excessive tensile stress, sharp die radii, or poor material ductility (wrong grain direction).
Shengjie Solution:
- Increase die corner radii to reduce stress concentration.
- Implement multi-stage drawing (redraw) to distribute strain.
- Select Deep Drawing Quality (DDQ) materials.
Earing (Uneven Rim)
Cause: Anisotropy in the sheet metal (directional properties from rolling).
Shengjie Solution:
- Use non-earing or isotropic material grades.
- Add a final trimming operation to ensure a flat edge.
- Optimize blank shape (not just a simple circle).
Galling (Scratches)
Cause: Friction welding between the sheet and the die, common in stainless steel and aluminum.
Shengjie Solution:
- Use TD (Thermal Diffusion) or CVD coated dies.
- Apply high-performance extreme pressure (EP) lubricants.
- Polish die surfaces to mirror finish.
Design for Manufacturability (DFM) Checklist
Follow these design guidelines to reduce tooling costs and ensure consistent quality for your deep drawn parts.
Corner Radii (R)
Avoid sharp corners. Internal corner radius should be at least 3x material thickness (3t). Sharp corners require more drawing steps, increasing tooling cost.
Draw Ratio (LDR)
Limit the Limiting Draw Ratio (LDR) to 1.8 - 2.0 for the first draw. If Depth > Diameter, multiple redraws are needed.
Draft Angle
Add a slight draft angle (taper) to vertical walls if possible. Even 0.5° - 1° helps significantly with part ejection and reduces die wear.
Bottom Radius
The radius at the bottom of the cup should be at least 4x - 8x material thickness to prevent tearing during the initial punch contact.
Quick Reference Table
| Parameter | Recommended Value |
|---|---|
| Corner Radius | ≥ 3t (3x Thickness) |
| Bottom Radius | ≥ 4t - 8t |
| First Draw Ratio | 1.6 - 2.0 |
| Redraw Ratio | 1.1 - 1.3 |
| Clearance | t + 10% (approx) |
| Draft Angle | 0.5° - 2° preferred |
Need help optimizing your design? Upload your CAD file, and our engineers will provide a free DFM report within 24 hours.
Download the Complete Deep Drawing Design Guide
Get our comprehensive PDF checklist with detailed charts on material selection, tolerance standards, and cost-saving tips.
Why Choose Us for Deep Drawn Components?
Specialized capabilities designed for high-precision and cost-efficiency.
Capable of multi-stage deep drawing with ratios exceeding 3:1, eliminating the need for welding or assembly.
Advanced tooling design ensures consistent wall thickness and structural integrity throughout the drawn part.
Precision control of diameter and concentricity down to ±0.02mm for critical fit applications.
Frequently Asked Questions
Common questions about our Deep Drawn Components services.
What is the maximum depth you can draw?
We can draw parts up to 300mm deep, depending on the diameter and material. (Target: Designers)
How do you control wall thinning?
We use advanced AutoForm simulation to optimize the drawing process and minimize wall thinning, ensuring structural integrity. (Target: Engineers)
Is deep drawing cheaper than machining?
For high volumes (>5,000 pcs), deep drawing is significantly cheaper due to lower material waste and faster cycle times. (Target: Owners/Buyers)
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Ready to Start Your Deep Drawn Components Project?
Send us your drawings today. We'll return a DFM report and quote within 24 hours.