Low grinding efficiency will affect production progress and may also damage the workpiece surface, affecting the quality of the final product. In order to gain a deeper understanding and solve this problem, we have summarized the eight reasons that lead to low grinding efficiency of grinding wheels.
Improper Selection Of Grinding Wheel Abrasive
When the abrasive of the grinding wheel is not selected properly, there may be a situation where the workpiece cannot be ground. This is because different workpiece materials require different types of abrasives for effective grinding. If the abrasive selection is incorrect, it will result in insufficient grinding force, making it difficult for the grinding wheel to remove the material on the surface of the workpiece. For example, when grinding silicon carbide, diamond grinding wheel has better sharpness.
Inappropriate Hardness Of Grinding Wheel
The hardness of the grinding wheel is an important factor affecting its grinding efficiency. If the hardness of the grinding wheel is too high, its self sharpening will become very poor. When the abrasive particles on the surface of the grinding wheel become dull and difficult to fall off, it will cause the grinding wheel to become dull and unable to move the workpiece. On the contrary, if the hardness of the grinding wheel is too low, the grinding wheel itself is prone to wear and cannot effectively grind the workpiece. The bonding agent of the grinding wheel has a significant impact on its self sharpening.
Wear Or Blockage Of Grinding Wheel
As the usage time increases, the surface of the grinding wheel will gradually wear or block, resulting in a decrease in grinding efficiency. When the grinding wheel is worn or blocked to a certain extent, there will be a situation where the workpiece cannot be ground. At this point, it is necessary to promptly dress or replace the grinding wheel.
Workpiece Material
When the workpiece has high hardness, high toughness, or special chemical properties, ordinary abrasives may be difficult to effectively grind, resulting in the grinding wheel not moving. At this point, it is necessary to select a more suitable abrasive based on the features of the workpiece, such as superhard abrasive (diamond or cubic boron nitride), and optimize the grinding parameters.
Grinding Heat Effect
The heat during the grinding process can cause an increase in the temperature of the workpiece, thereby changing its physical and chemical properties. When the temperature of the workpiece rises to a certain level, it may cause the grinding wheel to be unable to grind the workpiece. In addition, excessively high grinding temperature may also damage the grinding wheel and workpiece. Therefore, appropriate measures need to be taken to reduce the grinding temperature.
Installation And Transmission Of Grinding Wheel
When the grinding wheel is not securely installed or the transmission system malfunctions, it can cause the grinding wheel to become unstable during the grinding process, thereby affecting its grinding ability. When the grinding wheel shakes or bounces, it is difficult to effectively grind the workpiece, resulting in a situation where it cannot be ground.
Coolant
Coolant plays a role in cooling, lubricating, and cleaning during the grinding process. If the coolant is insufficient or poorly circulated, it can cause the temperature in the grinding area to be too high, thereby affecting the grinding ability of the grinding wheel. When the temperature in the grinding area is too high, the grinding wheel is easily not being able to move the workpiece. Therefore, it is necessary to ensure sufficient supply and smooth circulation of coolant.
Summary of Solving The Low Grinding Efficiency Of Wheels
In summary, aiming at the problem of low grinding efficiency of grinding wheel,we need to conduct a comprehensive analysis and solution from the aspects of grinding wheel abrasive selection, l hardness of grinding wheel, amount of feed, grinding wheel wear and dressing, workpiece material, grinding heat, installation and transmission of grinding wheel, and coolant. By selecting and adjusting these factors reasonably, we can effectively improve the grinding effect of the grinding wheel, ensuring the improvement of workpiece processing quality and production efficiency.
