How much do you know about the carbide drill technology in CNC processing?
- Josephine
- Apr 11
- 2 min read
Basic Introduction
Carbide drill is a high-performance cutting tool widely used in many fields such as metal processing, construction, aerospace, and automobile manufacturing.
It is made of carbide and has high hardness, high wear resistance, and good cutting performance.
#1 Definition and Materials of Carbide Drill
Definition: Carbide drill is a drill with carbide as the cutting part. Carbide is a composite material sintered by hard phases such as tungsten carbide (WC), titanium carbide (TiC) and metal binders (such as cobalt and nickel). It combines high hardness with a certain toughness, making it an ideal cutting tool material.
#2 Material Properties:
No.1 High Hardness:
The hardness of carbide is usually 85~90 HRA (Rockwell hardness), which is much higher than ordinary steel and high-speed steel.
No.2 High Wear Resistance
Can withstand long-term cutting wear and long service life.
No.3 Good impact resistance
Although the hardness is high, it can also maintain a certain toughness by adjusting the material composition and sintering process.
#3 Types of carbide drill bits
1
Integral carbide drill bits
Features: The drill bit is made of carbide material as a whole, without welding points, high strength, high precision, and suitable for high-precision processing.
Application: Commonly used in aerospace, precision machining and other fields, and performs well when processing high-hardness materials.
2
Welded carbide drill bits
Features: The carbide blade is welded on the steel drill rod, combining the cutting performance of carbide and the toughness of steel.
Application: Suitable for ordinary metal processing, relatively low cost, suitable for mass production.
3
Invertible carbide drill bits
Features: The blade is replaceable. When the blade is worn, only the blade needs to be replaced without replacing the entire drill bit, which is economical.
Application: Widely used in the machining industry, especially machining centers and automated production lines.
4
Coated carbide drill
Features: One or more layers of high-performance coating (such as TiN, TiAlN, Al₂O₃, etc.) are coated on the surface of carbide to further improve wear resistance, heat resistance and corrosion resistance
Application: Suitable for high-speed cutting and processing of high-hardness materials such as stainless steel, titanium alloy, etc.
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