DC04 Cold-Rolled Steel Coil Cover Plate | Automotive-Grade Precision Stamping - Guangdong Zhengqiang Technology Group
 
 
DC04 Cold-Rolled Steel Coil Cover Plate | Automotive-Grade Precision Stamping - Guangdong Zhengqiang Technology Group
High-Tolerance EMI Shielding Component for EV & Traditional Vehicles

Product Description:
Key Specifications
Material: DC04 Cold-Rolled Steel (EN 10130 compliant)
Thickness: 2.0mm ±0.02mm
Critical Tolerances:
Outer Diameter: ±0.05mm
Inner Diameter: ±0.03mm
Surface Integrity:
Sheared bright band ≥60% (burr-free edge)
Dual-side chamfering (R0.2±0.05mm)

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Products details

Advanced Manufacturing Process

Progressive Die Stamping Technology

Dual-output Layout: Simultaneous forming of 2 units per stroke

Integrated In-Die Chamfering: Front/back deburring in single operation

Speed80 SPM (76,800 units/day at 16-hour production)

Quality Assurance

Statistical Control: CPK ≥1.67 (validated with 300k-unit production data)

Edge Quality Verification: White-light interferometry for bright band ratio

100% Automated Optical Inspection (AOI): Real-time OD/ID tolerance monitoring

 

Solving Industry Challenges

Traditional Pain Points Our Breakthrough
Secondary chamfering causes deformation Single-step in-die dual-side chamfering
Single-station efficiency ≤35 SPM 80 SPM continuous production
Tolerance fluctuation >0.1mm ±0.03mm consistency via air-floating guides
Bright band <50% Precision clearance control + TiN-coated blades

 

Applications

Electric Vehicles: Motor end covers, battery module shielding
Traditional Autos: Generator coil guards, sensor housings
Industrial Motors: Stator insulation covers for high-power motors

Ideal for EMI-sensitive components requiring mechanical protection

 

Why Choose Us

Mass Production Excellence

Full-servo presses: Dynamic accuracy ±5μm

AI-driven wear compensation: Tool life extended to 3M+ strokes

Cost Efficiency

92% material utilization (nesting optimization + dual-output)

Zero secondary processing: 37% unit cost reduction

Automotive Certification

IATF 16949 certified manufacturing

Dimensional reports aligned with VDA 5 standards

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