Product Specification

High-Efficiency Motor Core Lamination for EV | Progressive Die Stamping

Product Description

Our High-Efficiency Motor Core Laminations are the foundational components for the next generation of Electric Vehicle (EV) propulsion systems. Engineered through advanced high-speed progressive die stamping, these rotor and stator laminations are designed to minimize eddy current losses and maximize magnetic flux efficiency.

We utilize premium-grade silicon steel (electrical steel) processed with ultra-precise carbide tooling to ensure each lamination meets the rigorous thermal and mechanical demands of high-RPM EV motors. By integrating automated interlocking and stacking technologies within the progressive die, we provide ready-to-use motor cores that offer superior structural stability and electromagnetic performance. Whether for traction motors, auxiliary pumps, or high-performance drones, our laminations are the gold standard for energy efficiency and power density.

Key Features

• Ultra-Low Iron Loss: Optimized material grain orientation and precision stamping reduce energy dissipation and heat generation.

• High-Speed Progressive Tooling: Capable of 300-500 strokes per minute, ensuring cost-effective high-volume production with extreme repeatability.

• Micron-Level Tolerance: Strict control over burr height (within 0.02mm) and dimensional accuracy for perfect stack alignment.

• Automated Stacking & Interlocking: Features built-in "cleats" or welding notches for seamless core assembly during the stamping process.

• Enhanced Durability: Specialized surface coatings (C5, C6) provide excellent insulation and corrosion resistance in harsh automotive environments.

Technical Parameters

Applications

Electric & Hybrid Vehicles (EV/HEV)

The heart of EV performance lies in the traction motor. Our laminations are used in high-torque permanent magnet motors and induction motors to extend driving range and reduce battery strain.

Renewable Energy Systems

Used in high-efficiency wind turbine generators and hydro-power energy storage systems where low-loss magnetic cores are critical for energy harvesting.

Industrial Automation

High-precision servo motors and robotic actuators require stable, high-RPM rotor/stator stacks to achieve precise motion control and rapid response times.

Customization Services (OEM/ODM)

We provide comprehensive Design for Manufacturing (DFM) support to help you transition from prototype to mass production.

• Custom Tooling Design: In-house development of multi-station carbide progressive dies.

• Material Optimization: Selecting the ideal silicon steel grade to balance cost and peak motor efficiency.

• Stacking Solutions: Options for interlocking, gluing, back-lap, or laser welding depending on your assembly requirements.

Support and Services

• Electromagnetic Analysis: Technical consultation on how lamination geometry affects motor performance.

• Quality Documentation: Full Material Test Reports (MTR), CPK data, and IATF 16949 compliance certificates provided with every batch.

• Prototype to Scale: Small-batch laser-cut samples available for initial testing before full tooling investment.

Packing and Shipping

• Protection: VCI (Volatile Corrosion Inhibitor) paper wrapping and vacuum-sealed plastic to prevent oxidation during transit.

• Stability: Custom-built wooden crates with internal bracing to ensure heavy stacks remain perfectly aligned and undamaged.

• Global Delivery: Strategic logistics partnerships for expedited air freight or cost-effective sea shipping to Europe, North America, and SE Asia.

FAQ

Q1: What is the thinnest material you can stamp with progressive dies?

• We can achieve high-precision stamping down to 0.20mm, which is ideal for reducing high-frequency losses in EV motors.

Q2: How do you control the burr height during mass production?

• We use tungsten carbide inserts in our dies and maintain strict sharpening intervals to keep burrs consistently below 0.02mm.

Q3: Can you provide the interlocking feature inside the die?

•  Yes, our progressive dies can integrate auto-stacking and interlocking dots, allowing the core to come out fully assembled.

Q4: Do you offer samples before making the official mold?

• Yes, we offer laser-cut prototypes or soft-tooling samples for functional validation before the final progressive die is built.