HARDNESS AND SELECTION OF FLAP WHEELS

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The flap wheels have different material and hardness. Naturally, the effect is different.

1. Hardness refers to the difficulty of abrasive particles falling off on sandpaper grinding wheel surface under the action of grinding force. The hardness of the product is soft, indicating that the abrasive particles of the product are easy to fall off. Hardness of the product means that the abrasive particles are difficult to fall off.

2. Flap wheel hardness and abrasive hardness are two different concepts. The same kind of abrasive can be made into different hardness, which mainly depends on the properties, quantity of binder and its manufacturing process.

3. The remarkable difference between grinding and cutting is that it has "self-sharpening". Choosing the hardness of grinding wheel is actually choosing its self-sharpening. It is hoped that the sharp abrasives won't fall off too early, won't don't fall off until they are worn bluntly either.

4. The general principle of grinding wheel hardness selection is: when processing soft metals, in order to prevent abrasives from falling off prematurely, the hard type should be chosen. When processing hard metals, in order to make the blunt abrasive peel off in time, so as to expose new abrasive particles with sharp edges and corners (i.e. self-sharpening), soft products are selected.