+86-533-2805169

Why Is There A Binder In White Fused Alumina? What Is Its Purpose?

Mar 16, 2026

White fused alumina binder ensures the bonding strength between the abrasive and the substrate. With industrial development, binders are mainly used in the abrasive and grinding wheel industry for coated abrasives to improve their performance, such as thermal stability and compressive strength.

 

It is a fundamental guarantee of product quality, playing a crucial role and arguably being an indispensable part.

 

Sometimes, when testing the quality of white fused alumina, the binder is also an important indicator. After all, the binder is what holds the white fused alumina abrasive grains together, and it not only improves its performance but also significantly affects its inherent properties and quality.

 

For example, if the binder particle size is too coarse, the molding compound will not mix evenly, which will greatly affect the hardness and strength of the white fused alumina.

 

 

Therefore, under normal circumstances, the particle size of white fused alumina binders is primarily fine. Fine-grained binders can distribute more evenly within the abrasive, greatly improving contact with the hardener.

 

For some fine-grained white fused alumina products, the binder particle size requirement is typically in the micrometer range.

 

Therefore, it's easy to see that the particle size and quantity of the binder directly affect product quality; this is what we often refer to as a small difference leading to a huge discrepancy.

 

Furthermore, it's worth noting that for white fused alumina, not only is the particle size of the binder important, but the type of binder is also crucial. For example, white aluminum oxide grinding wheels produced using different binders will have different properties and be suitable for different applications.

 

Send Inquiry