DLC coated Carbide drills

The DLC coated solid carbide drill is designed for high-speed drilling of aluminum and non-ferrous materials, where low friction, minimal material adhesion, and superior surface finish are critical.

By combining ultra-fine grain carbide substrate, self-developed DLC coating, and optimized drill geometry, this drill delivers outstanding cutting performance, extended tool life, and excellent hole quality.

Ideal for high-speed CNC machining, dry or MQL conditions, and precision production environments.

Premium Carbide Substrate

• Manufactured from imported MG-grade carbide rods

• Ultra-fine grain size: 0.8 μm

• 10% cobalt content for excellent toughness and edge stability

• Optimized for high-speed and high-precision drilling

The substrate provides a strong foundation for ultra-sharp cutting edges and stable performance at high spindle speeds.

Advanced DLC Coating Technology

• Self-developed DLC (Diamond-Like Carbon) coating

• Applied using in-house coating machines for full process control

• Ultra-low friction coefficient: ≤ 0.1

• Excellent anti-adhesion performance

• Effectively reduces:

      • Built-up edge (BUE)

      • Material sticking

      • Heat generation during cutting

The DLC coating is especially suitable for aluminum and non-ferrous metals, enabling smooth chip flow and superior surface finish.

Optimized Geometry for High-Speed Drilling

• Sharp point geometry for easy material engagement

• Optimized helix angle for fast chip evacuation

• Ultra-sharp cutting edges reduce cutting resistance

• Geometry designed to maintain stability under high RPM

This geometry ensures efficient drilling with minimal vibration and consistent hole quality.

Polished Flute Design

• Highly polished flutes combined with DLC coating

• Further reduces friction during chip evacuation

• Prevents aluminum chips from sticking to the tool

• Improves hole surface finish and tool life

Application Materials

Suitable for machining:

• Aluminum alloys

• Die-cast aluminum

• Pure aluminum

• Copper

• Magnesium alloys

• Other non-ferrous metals

Widely used in:

• Automotive lightweight components

• Aerospace aluminum parts

• Electronics and precision housings

To guarantee consistent performance and high-end quality, every DLC coated drill is produced under a fully controlled manufacturing and inspection system.

Precision Edge Preparation Technology

• Cutting edges are finely honed to maintain extreme sharpness

• Controlled edge preparation balances sharpness and edge strength

• Automated passivation ensures consistency across all tools

Advanced Manufacturing Equipment

• Manufactured on German WALTER 5-axis CNC grinding machines

• High-precision grinding guarantees accurate geometry and edge quality

• In-house production enables flexible OEM and custom solutions

Strict Quality Inspection & Control

• Geometry and profile inspection using WALTER HELICHECK PLUS

• Profile accuracy and radius control within 3 μm

• 100% visual inspection at 300× magnification

• In-house DLC coating equipment ensures:

     • Stable coating thickness

     • Strong adhesion

     • Batch-to-batch consistency

Q1: What is a DLC coated drill?

A: A DLC coated drill features a Diamond-Like Carbon (DLC) coating applied to the cutting surfaces. This coating offers ultra-low friction, excellent anti-adhesion performance, and reduced heat generation, making it ideal for high-speed drilling of aluminum and non-ferrous materials.

Q2: Which materials are best suited for DLC coated drills?

A: DLC coated drills are especially suitable for:

•Aluminum alloys

•Die-cast aluminum

•Pure aluminum

•Copper

•Magnesium alloys

•Other non-ferrous metals

They are not recommended for heavy machining of hardened steels.

Q3: What are the main advantages of DLC coating compared to other coatings?

A: Compared to conventional coatings, DLC offers:

•Ultra-low friction coefficient (≤ 0.1)

•Excellent resistance to material adhesion

•Improved surface finish

•Lower cutting temperature

•Better performance in dry or MQL machining

Q4: Is a DLC coated drill suitable for dry cutting?

A: Yes. DLC coated drills perform exceptionally well in dry cutting and MQL (Minimum Quantity Lubrication) conditions, thanks to their low friction and anti-adhesion properties.

Q5: What drilling depth is recommended for DLC coated drills?

A: DLC coated drills are typically recommended for 2×D, 3×D, and up to 5×D drilling depths, where high speed and surface quality are required.

Q6: Can you provide OEM or customized DLC coated drills?

A: Yes. We support OEM and customized solutions, including special diameters, lengths, geometries, and coating specifications tailored to customer applications.

Looking for DLC Coated carbide drill for aluminum and non-ferrous materials?

Contact us now for samples, technical support,or customized solutions.