Polishing is a surface treatment process for workpieces to achieve a smooth, flat and bright finish. It is generally applied in environments where high surface quality requirements are needed. The polishing procedure involves multiple steps, requiring nine stages from preparation to final product completion. The following details the relevant process steps:
1. Preparation Work
First, the workpiece surface must be thoroughly cleaned to remove dirt and grease. Methods such as ultrasonic cleaning machines can be used.
2. Coarse Grinding
Use coarser grinding wheels to grind the rough sections of the workpiece surface to make it flat. Select appropriate grinding wheel models and abrasives based on the workpiece material and desired roughness.
3. Medium Grinding
Use medium-grit grinding wheels or abrasives to further grind the workpiece after coarse grinding, making the surface smoother. Pay attention to grinding direction and pressure to avoid scratches and unevenness.
4. Fine Grinding
Use fine sandpaper or grinding cloth for fine grinding to make the workpiece surface more refined. Different grinding wheel grits and abrasive types can be selected and adjusted according to the required surface finish.
5. Polishing
Use polishing compounds and polishing cloths to polish the workpiece surface. Polishing compounds contain fine abrasives that can further improve surface smoothness and brightness.
6. Cleaning
Clean the workpiece to remove surface residues. Ultrasonic cleaning machines can also be used.
7. Drying
Dry the workpiece to prevent water residue on the surface.
8. Inspection
Inspect the workpiece to ensure surface finish and brightness meet requirements. Further refinements can be made if necessary.
9. Packaging and Protection
Wrap the workpiece surface with appropriate materials to avoid damage during transportation and storage.
Author: Wang Bo, Head of Engineering Department