What material is carbide cutting tools?

What material is carbide cutting tools?

Carbide tools are a composite material consisting of hard carbide particles and a binder metal. The hard carbide particles are typically tungsten carbide (WC) or titanium carbide (TiC), while the binder metal is typically cobalt (Co) or nickel (Ni).

Carbide tools have the following advantages:

  • High hardness: Carbide tools can have a hardness of 8000-9000HV, which is much higher than that of ordinary steel and cast iron. Therefore, they have excellent wear resistance.
  • High strength: Carbide tools have high strength and stiffness, so they can withstand large cutting forces.
  • High heat resistance: Carbide tools can still maintain high hardness and strength at high temperatures, so they are suitable for high-temperature cutting.
  • Corrosion resistance: Carbide tools have good corrosion resistance, so they are not easily corroded during cutting.

Carbide tools are widely used in various machining operations, such as turning, milling, drilling, and grinding. In these operations, carbide tools can improve machining efficiency, accuracy, and surface quality.

Carbide tools come in a variety of types, which can be divided into the following main categories according to the types and contents of the hard carbide particles, the types and contents of the binder metal, and the processing technology:

  • Tungsten carbide: This is the most common type of carbide tool, with high hardness and strength.
  • Titanium carbide: It has high hardness, strength, and wear resistance.
  • Rare earth carbide: It has high hardness, strength, and heat resistance.
  • Composite carbide: It is composed of two or more types of hard carbide particles, with even better performance.

The service life of carbide tools depends on various factors, such as the workpiece material, machining process, and cutting parameters. In general, carbide tools have a longer service life than ordinary steel tools.

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