What Is a Grinding Wheel?

Also known as consolidated abrasives, a grinding wheel is a consolidated abrasive that consolidates ordinary abrasives into a certain shape (mostly circular, with a through hole in the center) and has a certain strength of the consolidated abrasive. It is generally composed of abrasives, binders and pores. These three parts are often referred to as the three elements of a consolidated abrasive. According to the different classifications of bonding agents, there are ceramic (bonding agent) grinding wheels, resin (binding agent) grinding wheels, and rubber (binding agent) grinding wheels. Grinding wheel is the largest and most widely used type of abrasive tools. It rotates at high speed during use, and can perform rough grinding, semi-refining and external grinding of metal, non-metal workpieces on the outer circle, inner circle, flat surface and various profiles. Fine grinding and grooving and cutting.

Grinding wheels are the most important type in grinding

There are many types of grinding wheels. According to the abrasive used, it can be divided into ordinary abrasives (corundum and

Grinding wheels are circular solidified abrasive tools with through holes in the center made of abrasives and bonding agents. The characteristics of the grinding wheel are determined by factors such as abrasive, particle size, hardness, bonding agent, shape and size, etc., which are introduced as follows. ^[2]

Mainly related to processing surface roughness and productivity. During rough grinding, the grinding allowance is large, and the required surface roughness value is large. The coarser abrasive particles should be used. Because the abrasive particles are coarse and the air holes are large, the grinding depth can be large, and the grinding wheel is not easy to block and generate heat. When fine grinding, the margin is small, and the roughness value is required to be low. Finer abrasive particles can be selected. In general, the finer the abrasive particles, the better the grinding surface roughness. ^[1]

1.The grinding wheel must be visually inspected before installation and use, depending on whether there are cracks or damage, and the sound of the grinding wheel should be crisp. The rotation test should be performed according to the GB / T2493 standard before use, otherwise, it is strictly prohibited. 2. Prior to installation, the speed of the spindle on the machine must be checked, and it must not exceed the working speed indicated on the grinding wheel. 3. Only special nut wrenches are allowed to tighten the grinding wheel, and it must be gradually tightened in sequence and symmetrically on the opposite sides of the spindle. The nut tightening should be appropriate. It is forbidden to use supplementary fixtures or tapping tools. Turn off the coolant to prevent the wheel from being unbalanced. 5. The cooperation between the diameter of the wheel and the spindle and chuck of the wheel shall comply with the GB4674 standard. 6. The newly installed wheel must In the case of a protective cover, perform idling at the working speed according to the following time: the grinding wheel with an outer diameter <400 mm is not less than 2 minutes, and the grinding wheel with an outer diameter 400 mm is not less than 5 minutes. During idling, the operator should not stand in front of the grinding wheel. Or tangential direction. 7. Grinding wheels that are not specifically used for face grinding (such as parallel grinding wheels) must not be ground with the grinding wheel end face, and grinding wheels that are not exclusively used for external grinding (such as bowl-shaped, cup-shaped sand) It is also not possible to grind the outer circle of the grinding wheel to prevent the grinding wheel from breaking. 8. When the grinding wheel is grinding the workpiece, it is prohibited to press the workpiece with the lever to increase the pressure on the grinding wheel. 9. For thin grinding wheels and cymbals, When the force is too strong, the wheel stalls and breaks the wheel, causing damage to the wheel. When cutting the workpiece, do not stack multiple workpieces to prevent accidents. ^[2]

1.The grinding wheel is a fragile article, so it must be handled carefully to prevent shock and damage. 2.The grinding wheel should be stored on a shelf or in a box to prevent moisture. 3.

1. The diameter of the grinding wheel chuck shall not be less than one third of the diameter of the installed grinding wheel. The diameter of the grinding wheel chuck for cutting off the grinding wheel shall not be less than a quarter of the diameter of the installed grinding wheel. 2. For any type of grinding wheel chuck, the diameter of the left and right parts and the radial width of the pressing surface must be equal. 3. Each surface of the grinding wheel chuck should be smooth and free of sharp edges, and well balanced. 4. All rotating parts on the grinding machine, such as: grinding wheels, motors, pulleys and workpiece head frames, etc., must be equipped with protective covers. The protective cover shall be firm and its connection strength shall not be lower than that of the protective cover. ^[1]