Core Selling Points
■ Premium tool steel materials: Cr12MoV, SKD11, tungsten carbide
■ Precision machining with ±0.01mm dimensional tolerance
■ Optimized die geometry prevents wrinkling and tearing
■ Long service life: 3–5 million strokes per set
■ Compatible with all major deep drawing press brands
■ Surface treatments: TiN coating, polishing, nitriding
■ Quick delivery for standard sizes: 15–25 days
■ Custom die design service for special cap profiles
Technical Specifications
|
Parameter |
Specification |
|
Die Type |
Single draw / Multi-stage progressive |
|
Cap Diameter Range |
Ø15 – 150 mm |
|
Max Drawing Depth |
Up to 150 mm |
|
Dimensional Tolerance |
±0.01 mm |
|
Die Material |
Cr12MoV / SKD11 / Carbide |
|
Surface Roughness |
Ra ≤ 0.4 μm |
|
Hardness |
HRC 58–62 |
|
Expected Life |
3,000,000 – 5,000,000 strokes |
|
Fit Press Tonnage |
25 – 200 Tons |
|
Application |
Aluminum, Tinplate, Stainless steel |
|
Standard Sizes |
#30, #38, #43, #53, #63, #70, #82 |
|
Warranty |
1 Year / 1 million strokes |
|
Lead Time |
15–25 working days |
Production / Working Process
Step 1: Design Engineering – Die design optimized for product geometry
Step 2: Material Selection – Premium tool steel grade selected
Step 3: Rough Machining – CNC milling of die body and punch
Step 4: Heat Treatment – Vacuum quenching and tempering
Step 5: Precision Grinding – Jig grinding of critical dimensions
Step 6: Polishing – Mirror finish on forming surfaces
Step 7: Surface Coating – Optional TiN or DLC coating
Step 8: Assembly & Fitting – Die components assembled and aligned
Step 9: Tryout & Validation – Press trial and sample approval
Application Scenarios
• Aluminum screw cap deep drawing
• ROPP cap shell forming
• Tamper-evident cap drawing
• Metal jar lid deep forming
• Special shape cap progressive drawing
Case Study
■ Customer Background
A large cap manufacturer experiencing inconsistent die life across their production lines. Dies from different suppliers varied widely in performance, causing frequent changeovers and quality fluctuations.
■ Project Challenge
• Die life varied from 1.5M to 4M strokes from different suppliers
• Inconsistent cap dimensions between die sets
• Long lead times for replacement dies disrupted production
• Needed standardization across 12 production lines
■ Our Solution
• Became exclusive die supplier with standardized Cr12MoV + TiN coating
• Implemented master gauge system for dimensional consistency
• Established consignment stock of 8 common size die sets
• Provided die maintenance training and reconditioning service
■ Result & Benefits
• Average die life standardized at 4.2M strokes ±10%
• Cap dimensional variation between dies reduced by 80%
• Die replacement lead time reduced from 3 weeks to same day
• Overall die cost per million caps reduced by 35%
Frequently Asked Questions (FAQ)
Q: What die material do you recommend for aluminum cap production?
A: For high volume aluminum cap production, we recommend Cr12MoV or SKD11 tool steel with TiN coating. For ultra-high volume, carbide inserts provide longest service life.
Q: How many drawing stages does my cap need?
A: Number of draw stages depends on depth-to-diameter ratio and material ductility. Shallow caps need 1 draw; deep caps need 2–3+ stages.
Q: Can you reverse engineer dies from cap samples?
A: Yes, we can scan your cap sample with 3D measuring equipment and reverse engineer complete die geometry.
Q: What is the typical lead time for custom dies?
A: Standard deep drawing dies take 15–25 working days. Complex multi-stage progressive dies may require 30–45 days.
Q: Do you provide die repair and reconditioning service?
A: Yes, we offer die regrinding, polishing, repair and modification services. Worn dies can typically be reconditioned 3–5 times.
Q: How should I maintain drawing dies?
A: Proper lubrication, regular cleaning, periodic polishing and avoiding overloading are key. We provide detailed maintenance manual with each die set.
Hot Tags: bottle cap deep drawing dies, China bottle cap deep drawing dies manufacturers, factory
