Matters Needing Attention When Polishing Materials with Abrasive Papers

When polishing metal, it is necessary to have high-quality metal polishing materials such as oil stone, abrasive paper, and grinding paste in order to achieve a high-quality polishing effect. Here are some matters needing attention when polishing materials with abrasive papers.

1. When using different types of abrasive papers, the polishing direction should be changed from 45° to 90°, so that the streaks and shadows left by the previous type of abrasive papers can be distinguished. Because a small grit left on the surface will damage all subsequent polishing work. Therefore, before changing different types of abrasive papers, the polished surface must be carefully wiped with 100% pure cotton dipped in a cleaning solution such as alcohol.

2. In order to avoid scratching and burning the workpiece surface, special attention must be paid when polishing materials with #1200 and #1500 abrasive papers. Therefore, it is necessary to load a light load and adopt a two-step polishing method to polish the surface. When polishing with each type of abrasive paper, the polishing should be carried out twice in two different directions with each rotation between the two directions being 45°~ 90°.

3. Polishing with abrasive papers needs soft wooden or bamboo sticks. When polishing a round surface or a spherical surface, a softwood stick can better match the radian of them. Harder wooden strips, like cherry wood, are more suitable for polishing flat surfaces. Trim the end of the wood strip to keep it consistent with the surface shape of the steel part, so as to prevent the sharp angle of the wood strip (or bamboo strip) from contacting the surface of the steel part and causing deep scratches.