Grinding tungsten carbide and hard alloys requires specialized diamond wheels — bond and grit selection determine finish and wheel life.
Tungsten carbide, ceramics, and hardened steels exceed the capability of conventional abrasive wheels. Diamond grinding wheels — resin-bonded or metal-bonded — are the standard for precision surface preparation, tool sharpening, and edge profiling on these materials. Protec Tools manufactures diamond grinding wheels for industrial applications where dimensional accuracy and surface roughness are specified.
Bond Selection for Hard Materials
Resin-bond diamond wheels provide a free-cutting action suited to carbide tool sharpening and fine finishing. Metal-bond wheels offer longer life on heavy stock removal and EDM-affected surfaces where resin bonds wear too quickly.
- Resin bond: Tool and cutter grinding, surface finishing, low heat generation.
- Metal bond: Heavy stock removal, grinding of thermal-sprayed coatings.
- Electroplated: Form grinding and profile work on small or complex geometries.
Grit and Surface Finish
Coarse grits (80–120) remove material quickly but leave a rough surface. Fine grits (400–600) produce mirror finishes on carbide but cut slowly. Match the grit sequence to the required Ra value on the drawing.
Operating Parameters
- Run at the wheel manufacturer recommended surface speed — overspeeding causes bond breakdown.
- Use flood coolant for resin bonds to prevent heat cracking of carbide.
- Dress metal-bond wheels regularly to maintain cutting face geometry.
- Store wheels in a dry, temperature-stable environment to prevent bond degradation.
Need diamond grinding wheels for a specific carbide grade or OEM application? Protec Tools offers custom grit and bond configurations with sample grinding trials.
Related Protec Tools products: Laser welded diamond blade, Sintered diamond blade, Diamond core drill bit, Diamond grinding wheel
