Q&A on cermet grinding

1. What are the advantages of cermet?

Since SiN and SiAlON are relatively tough ceramics, especially at high temperatures, cutting tools made from these materials are best suited for roughing cast iron and heat-resistant superalloys (HRSAs), in addition, cermet cutters have a 10 times longer life than tungsten carbide cutting tools in machining wood materials. It also has better results in the processing of stainless steel

2. Why does chipping occur in the grinding of cermets?

Cermet is harder than tungsten steel, but it is more brittle, so it is more likely to break when subjected to heavy pressure. This also leads to the fact that it is prone to chipping during high-speed grinding. Therefore, after roughing, it is necessary to use a polishing wheel for polishing.

3. Why does the grinding wheel wear out so quickly in cermet grinding?

The density of cermets is very small, so you will find tungsten carbide knives and cermet knives of the same size and volume, cermet knives are lighter. Therefore, during the cutting process, the cermet chips will adhere to the grinding wheel with the oil, so that the diamond of the grinding wheel cannot reach the due cutting force, and finally the diamond will be dulled and smoothed, so that the wear speed of the grinding wheel is rapid. The solution can be to carry out oil stone treatment