The disc sanding is the most important type of abrasive. The disc sanding is a pressure at which a binder is added to a blank of a porous body to be dried and calcined. Due to the abrasives, binders and different manufacturing processes, the characteristics of the disc sanding vary widely, so the quality and economy of productivity play an important role in the grinding process. The characteristics of the disc sanding mainly depend on factors such as abrasive, strength, adhesion, hardness, organization, shape and size.
Wide range of disc sanding:
Abrasives can be divided into ordinary abrasives (corundum and silicon carbide, etc.) and natural abrasive superabrasive disc sanding and (diamond and cubic boron nitride) disc sanding.
According to the shape, it can be divided into a flat disc sanding, a conical disc sanding, a cylindrical disc sanding, a cup-shaped disc sanding, a disc type disc sanding and the like. The adhesive can be classified according to ceramic disc sanding, resin disc sanding, rubber disc sanding and metal disc sanding. Main characteristic parameters of disc sanding abrasive, viscosity, hardness, adhesive, shape, size, etc.
Since the disc sanding usually operates at high speeds, it should be used before testing (to ensure maximum working speed of the disc sanding without breaking) and static balance testing (work to prevent machine vibration). After working for a period of time, the disc sanding should be trimmed to restore the grinding performance and the correct geometry.
The characteristics of the grinding machine are:
Due to the strong friction, the temperature in the high grinding zone is very high. This can cause stress and deformation of the workpiece and can even cause burns on the surface of the workpiece. Therefore, a large amount of coolant must be injected to lower the grinding temperature. The coolant can also act as a debris and lubrication.
Large radial force. This will result in a flexible yielding of the machine-to-workpiece system such that the actual depth of the grooving is less than the nominal depth of the grooving – the disc sanding. Therefore, when grinding is about to be completed, light cannot enter the grinding wheel dressing tool to eliminate the error.
The grinding force of the blunt abrasive also increases, causing the particles to rupture or fall off. This function is called “self-sharpening” after re-exposing the sharp edges. Self-sharpening can be performed normally for a period of time, but after a certain period of time, manual trimming should be performed to avoid vibration caused by grinding, noise and damage to the surface quality of the workpiece.
Since the grinding wheel dressing tool itself has high hardness and heat resistance, the grinding can handle high hardness materials such as hardened steel, tungsten carbide and the like.