Tungsten Carbide in blades manufacturing
Tungsten is a very hard and dense metal, however, alone tungsten is vulnerable to scratches and damages. It is almost three times as dense as iron, almost twice that of lead and virtually the same as gold. It gains its extreme hardness by being combined with a carbon alloy, transforming it into tungsten carbide, with a hardness around 9 on the Moh’s hardness scale.
For many years Tungsten carbide has been used in manufacturing large knives, however, using it for production of thin blades is much more complicated. While tungsten carbide is much more wear resistant and several times denser than steel, it is also more susceptible to breakage.
The benefits of tungsten carbide guillotine blades compare with steel blades include
- Leaving a better surface finish of the product
- Less dust and more accurate cuts due to reduced friction
- Better efficiency in high-heat and high-speed applications
- Improved toughness and greater wear resistance
- Better durability of the cutting edge.