It is commonly used for efficient hole processing of workpieces. Below is an introduction to the main features and structure of the drill bit:

1. Structure: DF tungsten carbide external cooling drills usually consist of a tungsten carbide cutting part and an internal coolant supply system. The internal system can guide the coolant to the cutting tip through the tool itself, effectively reducing the temperature in the cutting area and extending the tool life.

2. Cooling Effect: The cooling system of DF drills can quickly dissipate heat, effectively reducing friction and thermal damage between the workpiece and the tool improving processing efficiency and tool life.

3. Cutting Performance: The tungsten carbide material gives the DF external cooling drill bit good wear resistance and cutting performance, suitable for efficient processing of materials.

4. Stability: The design of the cooling system improves the stability of the tool and machining accuracy, ensuring the quality and accuracy of the holes.

   
   

Scope of application:

1. Automobile manufacturing: DF tungsten carbide external cooling drills can be used in automobile manufacturing for machining holes in engine parts such as cylinder heads andshafts, improving processing efficiency and quality.

2. Mould Manufacturing: Used in the mould manufacturing field for hole processing of mould parts, ensuring the accuracy and stability of the mould.
   

3. Medical Devices: In the manufacturing of medical devices, DF tungsten steel twist drills can be used to process precision holes in medical equipment, ensuring the and functionality of the devices.