High Precision Slitting Knives Customized for a Leading New Energy Aluminum Material Manufacturer in China

A leading new energy aluminum material manufacturer in China required high-precision circular slitting knives for processing advanced aluminum strip and composite aluminum materials used in new energy and automotive applications.

With increasing demand for lightweight materials and high-efficiency thermal management solutions in new energy vehicles, the customer required slitting knives with excellent dimensional accuracy, stable cutting performance, and long service life for continuous production.

Based on the customer’s equipment requirements and application conditions, we customized a series of precision LD steel circular slitting knives with multiple special specifications, ensuring reliable performance in high-volume aluminum material processing.

Customer Requirements

The customer required customized rotary slitting knives with strict dimensional requirements.

One representative specification:

• Outer Diameter (OD): 215 mm
• Inner Diameter (ID): 165 mm
• Thickness: 1.005 mm

More than ten different sizes were customized according to different production line requirements.

Main requirements:

• High-quality LD tool steel material
• Excellent wear resistance
• Stable cutting performance
• High dimensional consistency
• Precise edge geometry
• Suitable for continuous industrial production

Our Solution

According to the customer’s application in new energy aluminum material processing, we selected LD steel, a high-performance tool steel widely used for precision industrial knives requiring a balance of hardness, wear resistance, and toughness.

Through optimized heat treatment and precision grinding processes, we achieved:

High Precision Manufacturing

Each circular slitting knife was manufactured with strict process control, including:

• Precision CNC machining
• Vacuum heat treatment
• Surface grinding
• Edge finishing
• Final dimensional inspection

This ensures stable cutting performance and consistent quality during long-term operation.

Precision Control

To meet the customer’s requirements for high-speed slitting applications, we controlled the critical geometric tolerances:

• Thickness tolerance: ±0.001 mm
• Parallelism: ≤0.002 mm
• Flatness: ≤0.002 mm

The high precision of the knife body helps:

• Reduce cutting vibration
• Improve material slitting consistency
• Minimize edge defects
• Extend knife service life

Application

These customized LD steel circular slitting knives are used for precision processing of new energy aluminum materials, including:

• Aluminum strip slitting
• Aluminum composite material processing
• Automotive thermal management materials
• New energy vehicle material applications

The precision rotary knives help manufacturers achieve:

• Cleaner cutting edges
• Stable production efficiency
• Reduced downtime caused by frequent knife replacement
• Improved product consistency

Manufacturing Capability

We specialize in customized industrial cutting tools and provide precision slitting solutions for demanding industries.

Our capabilities include:

✔ Customized circular slitting knives
✔ Special diameter and thickness production
✔ LD steel and other tool steel options
✔ Precision grinding and inspection
✔ Small batch development and mass production

From prototype validation to long-term supply, we support customers requiring reliable and high-precision industrial knives.

Project Result

By supplying customized LD steel precision slitting knives, we helped the customer improve cutting stability and maintain consistent processing quality in large-scale new energy aluminum material production.

This project demonstrates our capability in manufacturing high-precision circular slitting knives for advanced material processing industries.

Related Product: slitting line tooling

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