hardness

Abrasives hardness refers to the abrasive surface of the abrasive in the external force off the degree of difficulty. Abrasive easy to fall off the hardness is low, easy to fall off the high hardness. China's production of abrasive hardness grade is divided into seven levels, 14 small.

The hardness of the abrasive is determined by the hardness of the material to be machined, and the factors such as the size of the contact area of the tool and the tool, the shape of the workpiece, the way of grinding, the way of cooling, the type of binder.

Third, the organization

The organization of the abrasive is the degree of density of the abrasive material in the abrasive. Are generally expressed as a percentage of the abrasive volume in the abrasive.

Tight organization, abrasive is not easy to fall off, is conducive to maintaining the shape, suitable for grinding or grinding, heavy grinding and intermittent grinding.

Loose structure, abrasive is not easy passivation, cutting force, grinding process less heat, can reduce the workpiece burns, deformation, suitable for soft texture and toughness of the material, heat-sensitive materials, thin parts and contact area Grinding processing.

Four, binding agent

The binder acts as a binder abrasive in the abrasive so that the abrasive grains are interconnected to form abrasive with a certain geometry. Commonly used binders are ceramics, resins, rubber and so on.

Ceramic combination (old code A, the new code V) made of abrasive than other binding agent abrasive stalls large grinding efficiency, wear and tear, can better maintain the wheel geometry. Is the most widely used as a binder.