How to Identify the Hardness and Wear Resistance of the Toothed Blade

High hardness and wear resistance Hardness is the basic characteristic that the toothed blade material should possess. To remove chips from a workpiece, a serrated blade needs to be harder than the workpiece material. The hardness of the cutting edge of the toothed blade used for cutting metal is generally above 60hrc, and the wear resistance is the ability of the material to resist wear. In general, the harder the toothed blade material, the better its wear resistance.

The higher the hardness of the hard spots 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.

Sufficient strength and toughness To make the toothed blade withstand greater pressure and work under the shock and vibration conditions that often occur during the cutting process without chipping and breaking, the material of the mechanical blade needs to have sufficient strength and toughness. High heat resistance Heat resistance is the main indicator to measure the cutting performance of toothed insert material.
It refers to the performance of the toothed blade material to maintain the agreed hardness, wear resistance, strength and toughness under high temperature conditions. The tooth-shaped blade material should also have the ability not to be oxidized at high temperature and good anti-adhesion and anti-diffusion ability, that is, the material should have good chemical stability.

Good 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 beneficial to reduce the cutting temperature.