Which Is Better, Silicon Carbide Sandpaper Or Diamond Grinding Disc？
1. How do you choose silicon carbide sandpaper and diamond grinding discs?
In the preparation of consumable samples, in addition to cutting and inlaying, the key step is the grinding and polishing process. In this way, the cutting does not produce deep, irremovable defects, and the mosaic is also correct. The key lies in the grasp of the grinding and polishing process. In the case of proficient sample preparation techniques, the quality of sample preparation depends on whether the consumables selected for each grinding and polishing process are appropriate. Silicon carbide sandpaper and diamond grinding discs are both used for the rough grinding process. but there are still differences in application. If you understand these differences, you can choose them appropriately.
2. The characteristics of silicon carbide sandpaper and diamond grinding disc
The grinding particles of the diamond grinding disc are diamonds, the particle size is from 240μm-6μm. It is especially suitable for the preparation of samples of high hardness or superhard materials such as ceramics glass, thermal sprayed metal coatings, cemented carbides, etc., for materials with hardness higher than 150HV. A diamond grinding disc can replace at least 100-200 pieces of silicon carbide sandpaper. Thus, the advantages of the diamond grinding disc can be demonstrated. Generally, when using a diamond grinding disc for rough grinding, which is different from using silicon carbide sandpaper, which at least needs 2 to 3 marks for the grinding process, it only needs one step. The removal rate is high, and wear resistance and good grinding performance are maintained. With good durability, it is easy to obtain samples with perfect edge retention and flatness. This is the application characteristic of the diamond grinding disc.
The abrasive particles of silicon carbide sandpaper are silicon carbide particles, with a particle size range from 260μm-5μm. For materials with a hardness of less than 150HV or a slightly harder material with good ductility, it is appropriate to choose silicon carbide sandpaper for coarse grinding. it is easy to remove the material to obtain a uniform surface finish.
To sum up, compared with the diamond grinding disc, silicon carbide sandpaper is different in the rough grinding application depending on the hardness of the material. The diamond grinding disc is suitable for the preparation of material samples with a hardness range of 150HV and above, and a hardness range below 150HV, or the hardness is high but the ductility is better, it is best to use silicon carbide sandpaper for the sample preparation.
