When we talk about brown corundum particle size, we often refer to brown corundum particle size F-grain size, P-grain size and W-grain size. While most people are familiar with P-grit, few know about W-grit and F-grit, causing confusion. Well today, we'll help you differentiate between them.
Among brown corundum, F sand and W sand are produced in different specifications using different processes for different uses.
Brown Corundum F-Sand
Brown corundum F-grit is a common abrasive with a particle size range from F4 to F320. Its chemical composition varies slightly due to its particle size. It is characterized by low magnetic material content, small crystal size, and impact resistance.
Usually, brown corundum F sand is mostly used in fixed abrasive tools such as ceramic grinding wheels, grinding blocks, and resin grinding wheels due to its high packing density and special particle shape. Can also be used for refractory materials and sandblasting.
Brown Corundum W-Sand
The grit size of brown corundum W can be processed according to user requirements. Generally speaking, brown corundum W sand is more commonly used on coated abrasive tools such as abrasive belts, emery cloths, and sandpaper due to its pointed shape and relatively low packing density. It can also be used in grinding, polishing, precision casting and other fields.
The particle size of brown corundum W-sand is marked with the English letter "w" followed by Arabic numerals. The larger the number, the finer the abrasive grain size. Its granularity markers include W1, W5, W10, W50, and W63, among others.
Brown corundum W sand is mainly used for coated abrasive tools. The shape of its micro-powder is mostly sharp and needle-like, with low packing density and concentrated particle size distribution. Brown corundum F grit is used for bonded abrasive tools, its particles are shaped like grains or so-called gemstones and have a high packing density.
Although W-type sand and F-type sand are different, due to their fixed particle size, they both belong to the medium sand range of brown corundum sand.
Brown corundum is mainly made of alumina and coke (or anthracite) as raw materials, and is smelted at high temperature in an electric arc furnace. Abrasive tools made of it are suitable for grinding various general steel, malleable iron, hard bronze and other metals with high tensile strength, and can also be used to manufacture high-grade refractory materials. Brown corundum has the characteristics of high purity, good crystallization, strong fluidity, low linear expansion coefficient, and corrosion resistance. It has been verified by dozens of refractory material manufacturers that this product does not explode, pulverize or crack during use. Its cost performance is much higher than that of traditional brown corundum, making it the best aggregate and filler for brown corundum refractory materials.
