Analysis and Prevention Measures for Overlap Grinding Burn and Scores
Grinding burn is an important part of the actual grinding process and will most likely occur in high-speed cutting of workpiece. When the heat produced by the friction between the grinding wheel and the workpiece is not dissipated in time, the temperature of the grinding zone significantly rises, resulting in a phenomenon of burn and scores. In order to effectively reduce or prevent the occurrence of overlap grinding burn and scores, the following aspects should be considered:
1. Grinding force control: The size and direction of the grinding force have a great influence on the grinding temperature, which is the most important factor causing burning and scores. When grinding, the size and direction of the grinding force are very important, the size should be set according to the machining process and requirements, and the direction should be adjustable. The grinding force distribution should be uniform and reasonable.
2. Grinding allowance control: It is an effective way to reduce grinding temperature to reduce grinding allowance. The size of the grinding allowance should be small and the shortest Grinding Path should be taken for grinding.
3. Cooling fluid use: The cooling fluid used in the grinding process should be cooled in time to disperse heat in the grinding zone, which can reduce the workpiece temperature and avoid burning and scores. Generally, coolants with high heat transfer and thermal stability are used.
4. Using high-efficiency grinding wheel dressing: It is an effective way to reduce grinding temperature to improve grinding efficiency by increasing the contact area between the abrasive grain and the workpiece to be ground. During grinding, the dressing speed should be appropriate and the grinding pass should be moderate.
5. Accurate grinding location: Grinding burn is related to the location of the grinding. Accurate grinding location can effectively reduce grinding temperature. At the same time, the grinding position should be adjusted to avoid poor concentricity when the workpiece is located.
6. Optimizing the temperature of the grinding wheel: In order to improve the cooling effect of the grinding wheel surface, the grinding wheel should be preheated before grinding, and the grinding wheel temperature should be maintained at a stable temperature during grinding.
In conclusion, the use of the above measures will help reduce the grinding burn and scours during the grinding process, thus greatly improving production efficiency. In addition, in the actual grinding process, it is also necessary to pay attention to regular inspection, timely detection of grinding burn and scores, and taking effective cooling measures.
