Do you know how the hardness of the grinding wheel is defined? Is it the same as the hardness of abrasive grains? Today, the editor of Cndome® will take you to analyze the hardness of the grinding wheel and several principles that should be considered when choosing the hardness of the abrasive wheel.
“Wheel hardness” is the reaction of abrasive particles under the action of grinding force. The ease with which it falls off the wheel surface. It and the hardness of abrasive grains are two different concepts.
The following principles can be considered when choosing the hardness of the grinding wheel
The harder the workpiece material, the softer the abrasive wheel hardness should be. The softer the workpiece, the harder the abrasive wheel hardness should be.
Machined contact surface
When the contact surface between the abrasive wheel and the workpiece is large, a soft abrasive wheel should be used. Make the abrasive particles fall off faster to avoid burns on the surface of the workpiece.
Fine and form grinding
For fine grinding and form grinding, a harder abrasive wheel should be used. In order to ensure the necessary shape accuracy of the abrasive wheel.
Grinding wheel size
The larger the grain size of the abrasive wheel, the lower the hardness. So as not to block the surface of the abrasive wheel by grinding debris.
Disadvantages of workpiece material
If the grinding wheel is too hard, the dull abrasive particles will not fall off in time. As a result, a large amount of grinding heat is generated, causing burns to the workpiece. If the selection is too soft, the abrasive particles will fall off too quickly and cannot fully exert their cutting effect.
I hope that everyone will no longer confuse the hardness of the abrasive wheel with the hardness of the abrasive grains. When choosing the hardness of the abrasive wheel, pay more attention to select the appropriate abrasive.
Cndome® has 20 years of experience in professional production of cutting discs, one piece tops three pieces! Strictly in accordance with the “7s” field standard to produce. Products have passed ISO9001 testing, CE, MPA certification.