PCD tool's high hardness and high wear resistance destined it to be a relatively difficult tool to grind. PCD tool grinding is very different from ordinary grinding process, because PCD tool is the process of diamond grinding diamond, so it is Grinding machines, diamond wheels and grinding processes all have high requirements. The selection of PCD tool grinding wheels should pay attention to the following points, let's take a look at the editor of Lanhe!

1. Granularity selection

  The smaller the particle size, the smoother the surface will be. Of course, it is impossible to select only one particle size, and the thickness should be combined.

2. Binder selection

  There are three types of bonding agents: diamond, resin, and ceramic bonding agents.

Diamond wheel

  The bronze bond is used, which has good molding properties, high strength and certain toughness, but poor self-excitation.

Resin Bond Grinding Wheel

  It has high strength, good elasticity, and stable bonding, but the resin is a polymer material and has no fixed melting point, so it has poor heat resistance. When the temperature reaches 200 or more, the bonding ability is greatly reduced.

Vitrified bond grinding wheel

  High hardness, good self-excitation, stable chemical properties, heat resistance, water resistance, acid resistance, etc., and low cost, but the ceramic bond grinding wheel is powder pressed, so uniformity is difficult to guarantee, and it is relatively brittle, so grinding Abrasive grains and bonding agent are easy to collectively fall off during processing.

Generally speaking, these three types of grinders have their own characteristics, and the needs depend on the actual situation.