Choosing abrasive belts for your metal finishing application can be difficult because of the sheer number of choices available. With so many grit sizes, abrasive types and backing materials on the belts, which offers the most reliable metalworking performance?

When it comes to metal finishing, there are many abrasives available, but ceramic belts are known for their exceptional performance and results. However, they are also quite expensive, which raises the question of whether they are truly the best option for metal finishing. This article explains why ceramic belts are worth the cost.

Ceramic is a highly efficient abrasive material with a closed-coat composition that ensures a consistent finish. It has a strong cutting ability and a microcrystalline structure that provides sharp cutting edges with each use, resulting in a longer working life than most other abrasives. Because of its ability to maintain a fast and durable cutting action, it is ideal for preparing metal surfaces, removing stock, and restoring and finishing workpieces.

Although zirconia and aluminum oxide are also used for metal finishing, they differ from ceramic in terms of longevity and performance. Zirconia is self-sharpening and will keep cutting until the grain is worn out, but the micro-grain structure of ceramic results in smaller pieces breaking away during use, giving it superior longevity. Aluminum oxide, one of the most widely used abrasives, wears down more rapidly, affecting stock removal rate and finish quality. As the grains continue to dull, you have to apply more pressure to maintain performance, which can cause excessive heat build-up and operator fatigue.