Material properties of toothed blades:
Hardness
Hardness is the basic property that toothed blade materials should have. In order to cut chips from the workpiece, the hardness of the toothed blade needs to be greater than that of the workpiece material. The chip edge hardness of the toothed blade used for cutting metal is generally above 60HRC.
Wear resistance
Wear resistance is the ability of a material to resist wear. Generally speaking, the higher the hardness of the toothed blade material, the better its wear resistance. The higher the hardness of the hard points in the organization, the more the number, the smaller the particles, and the more uniform the distribution, the better the wear resistance. Wear resistance is also related to the chemical composition, strength, microstructure and temperature of the friction zone of the material.
Strength and toughness
In order for the toothed blade to work under great pressure and under the impact and vibration conditions that often occur during the cutting process without chipping and breaking, the mechanical blade material needs to have sufficient strength and toughness.
Heat resistance
Heat resistance is the main indicator of the cutting performance of toothed blade materials. It refers to the performance of toothed blade materials to maintain the agreed hardness, wear resistance, strength and toughness under high temperature conditions. The toothed blade material should also be resistant to oxidation at high temperatures and have good anti-adhesion and anti-diffusion capabilities, that is, good chemical stability.
Thermal physical properties and thermal shock resistance
The better the thermal conductivity of the toothed blade material, the easier it is for the cutting heat to dissipate from the cutting area, which is conducive to reducing the cutting temperature.
