How to evaluate the particle size of white Fused alumina ?


The same is white fused alumina, but we always give specific values when we purchase. When it comes to the particle size of white fused alumina, each manufacturer implements it in accordance with the established standards in the industry! So how is the standard for white fused alumina/ corundum size? The editor of Yufa Abrasives will tell you about the particle size standard of white fused alumina.


1. What is the grain size of white fused alumina?

Particle size refers to the size of powder. Due to the complex shape of particles, there are usually several expression methods such as sieving particle size, sedimentation particle size, laser particle size, equivalent volume particle size, and equivalent surface area particle size. At present, there is no unified technical standard for powder particle size at home and abroad, and each enterprise has its own definition and expression method of particle size index. In China, the particle size of white fused alumina is generally expressed by the number of meshes. Screen specifications in different countries and industries have different standards, so the meaning of "mesh" is also difficult to unify.


2. How to formulate the particle size of white fused alumina?

The particle size standard of white fused alumina was negotiated and customized by the National Abrasives Standardization Technical Committee. Yufa Abrasives, as the vice chairman unit of the National Abrasives Standardization Technical Committee, participated in the drafting and revision of the new international standard "White fused alumina for Ordinary Abrasives".

The sieving particle size is the size of the sieve holes that the particles can pass through the sieve, expressed as the number of sieve holes in a 1 inch (25.4mm) wide sieve, so it is called the "mesh number".

Mesh: refers to the number of holes on the screen per square inch, 50 mesh means 50 perforations per square inch, 500 mesh means 500, the higher the mesh number, the more perforations. In addition to indicating the perforations of the screen, it is also used to indicate the particle size of the particles that can pass through the screen. The higher the mesh, the smaller the particle size.


3. What is the conversion formula for white corundum mesh?

For example, 60 mesh means there are 60 grids in 1 inch. One 60th of 1inch is the width of the network line plus the width of the space. Different manufacturers have a slightly different ratio of the width of the network line to the width of the space. The standard is 2:3, that is, the space only occupies 3/5 of the width. So 60 mesh is equivalent to 25.4/60*3/5=0.705mm. The 6.25 micron mesh on the question can be calculated as follows: 25.4*1000/(6.25/3*5)=2448 mesh.

The above is the white corundum particle size standard introduced by the editor of Yufa Abrasives. If you want to know more details about white fused alumina, you can learn more about it through Whatsapp or email!

WhatsApp +8615838071542; Email: arthur@yfml.com


Thanks for your time!

YUFA Abrasive Group

Post time: May-08-2021