3mm-12mm Diamond Coating Corn End Mill CNC Milling Cutter For Graphite

Introduction:

A diamond-coated corn end mill is a specialized solid carbide cutting tool designed for high-speed, high-precision machining of graphite, carbon composites, and other abrasive non-metallic materials. The corn-shaped (serrated) cutting edge ensures efficient roughing, while the diamond coating provides extreme wear resistance for prolonged tool life.

Features:

✔ Material:

• Substrate: Ultra-fine grain carbide for rigidity and heat resistance.

• Coating: CVD/PCD diamond coating (superior hardness, reduces graphite adhesion).

✔ Geometry:

• Corn/serrated edge – Breaks graphite into fine chips, reducing cutting forces.

• 2–4 flutes – Balances chip evacuation and cutting speed.

• Flat or ball-nose tip – For flat-bottom or 3D contouring applications.

✔ Optimized for Graphite:

• Low helix angle (~10°–20°) to prevent edge chipping.

• Polished flutes to minimize friction and dust buildup.

✔ Durability:

• Diamond coating lasts 5–10x longer than uncoated carbide in graphite.

Typical Applications:

• • • • Graphite Electrodes (EDM applications, mold & die industry).

• • • • Carbon Fiber Reinforced Polymers (CFRP), Ceramics, Glass Composites.

• • • • High-Speed Machining (HSM) of Brittle, Abrasive Materials.

      Industries: Aerospace, automotive (EV battery components), electronics, and precision tooling.

Advantages:

✅ Extended Tool Life – Diamond coating resists abrasive wear.

✅ Superior Surface Finish – Reduces graphite dust buildup.

✅ Higher Speeds & Feeds – Enables faster machining vs. uncoated tools.

✅ Reduced Tool Changes – Saves downtime in production.

Usage Tips:

• Dust Extraction Required – Graphite particles are conductive and abrasive.

• Dry Machining or Air Blast – Avoid coolant (graphite absorbs moisture).

• Climb Milling Preferred – For better chip evacuation and finish.

• Avoid Excessive Heat – High RPMs help, but ensure proper chip removal.

Detailed Pictures:

Our workshop:

Promotion policy:

To help you experience our premium products, we’re excited to offer the following exclusive promotions for first-time buyers:

1.Free Test Samples

Get free samples (total value ≤ $20 USD) when you cover the international shipping cost.

Perfect for evaluating our product quality and performance risk-free.

2.$50 USD Discount on First Order

New customers can enjoy a $50 discount on the first order of $500 or more.

A great way to start our partnership with extra value!

Other products:

FAQ:

1. Are you a manufacturer or trading company?

We are a professional manufacturer of carbide tools which established in 2017.

2. Which CNC grinding machine do you use?

All of our carbide tools are produced by imported WALTER grinding machines.

3. Which shipping method do you usually use?

We usually send goods by express like FedEx, UPS, DHL, TNT, EMS, ETC.

We also can send products to your shipping agent in China.

  CHANGZHOU AMG PRECISION TOOL MANUFACTURING CO., LTD. is a leading manufacturer and solution provider specializing in high-performance carbide cutting tools for precision CNC machining applications. With a strong commitment to innovation and quality, we design and produce an extensive range of standard and custom cutting tools, including carbide drill bits, end mills, reamers, and complex non-standard forming tools tailored to meet the most demanding machining challenges.