1. Why use Diamond and CBN Grinding wheels?
Diamond and CBN are defined as super hard materials due to their extremely hardness that surpasses the traditional abrasive materials like alumina oxide or silicon carbide.
Diamond and CBN Wheels are widely used in high effective grinding processes and offer substantially benefits over traditional wheels.The main advantage of diamond and CBN wheels:
- Very long tool life and profile stability
- Short grinding times
- Short handling times
- Lack of thermal damage to the workpiece
- Ensure appropriate workpiece quality
2. How to choose superabrasives type？
Diamond is the hardest abrasive material in the world.
- Hard metal
- Hard metal/steel combinations
- Ceramic materials of all kinds
- Carbide-based powder coating
- Polycrystalline diamond and CBN blanks
- Ceramic magnetic materials
- Glass and carbon-fibre reinforced synthetic materials
- Tungsten Carbide
CBN is the second material after diamond. CBN is produced similarly to the diamond by high pressure and high temperature aynthesis. Due to their chemical features and considerable lower wear, CBN tools are used for grinding such hard-to-process steels as:
- HarHardened high-speed steel (HSS)
- High alloyed steels with at least 55 HRC
- Case-hardened steels
- Iron-based powder coatings
- Chill castings
- Soft steels in certain applications
CDX is a special superabrasive material with the performance between diamond and CBN. It is mainly used to grind the compound of hard&fragile material (like TCT) and Ferrous material (like Chilled steel).
3. How to choose Diamond and CBN grit size?
The chosen grit size affects the performance of the wheel determing the stock remove rate and surface finishing that can be achieved coarser grit size enables higher material removal rate and rougher surface finishing, while a fine grit size is used for attaining a smoother surface finishing.
4. How to Truing and Dressing?
Truing and Dressing are necessary for keeping your superabrasive grinding wheel in ultimate working condition.
Truing gives the grinding wheel its geometrical accuracy and makes it run true while dressing opens up the grinding wheel, and exposing the abrasive grit by clearing away bond material from around the cutting edges.