Search results
Results from the WOW.Com Content Network
Grain Association (AGA) to provide a nationally recognized standard for checking the size of abrasive grain for grinding wheels, polishing and general industrial uses.
When selecting a grinding wheel, there are many types of abrasive grains, a whole range of grit sizes, and a number of different bonding agents to consider. Learn the factors to keep in mind when choosing the best wheel for your job.
You must first realize that a grinding wheel has a few fundamental requirements, such as grain size, wheel grades, bond type, and grain spacing. You can also use it on materials other than wood. When selecting a grinding wheel, your primary consideration should be why you plan to utilize it.
There are more specifications on grinding wheels, other than its numeric measurements, that are important to know and understand. They are as follows: T-1. This spec stands for “Type 1”, indicating a flat grinding wheel or straight tool room wheel. A36. This spec stands for the material and grit of the grinding wheel.
A36 - A means it is an aluminum oxide grinding wheel and the 36 means the grinding wheel is composed of a medium grain size also known as grit. See the grain size chart below.
The specification calls out which abrasive grain and bonding chemicals go into the wheels, and the size tells them how much of each is required. These raw materials are then mixed in a large industrial mixer, very similar to mixing mortar or cement.
Grit size refers to the size of the abrasive particles in the grinding wheel. It is denoted by a number, such as 36, 60, or 120. Lower grit numbers indicate coarser abrasives suitable for material removal, while higher grit numbers result in finer finishes.
The wheel’s structure refers to the measurement of the relative grain porosity or spacing of the grinding wheel. It should be noted that the larger the number, the more porous and open the wheel is, but if the number is smaller, then the denser the grains will be in the wheel.
Understanding the different types of grinding wheels and their specifications is crucial for selecting the appropriate wheel for a particular application. Factors such as grain type, grade, structure, and bond determine the performance and durability of a grinding wheel.
A grinding wheel is a precision tool with thousands of cutting points on its surface - abrasive grains that are held in place by a bond matrix (hence these are known as bonded abrasives) and separated by pores.