Based on our years of experience, some commonly used product requirements are shared with everyone, especially beginners, for reference.

1. The surface roughness value of the grinding surface with plane accuracy requirements is R0.4um~1.2um;

2. The precision of the exposed plane needs to be polished, and the surface roughness value of the polished surface is R1.2um~R3.2um;

3. The accuracy of the invisible bottom plane can be directly machined without any treatment, and the surface roughness value is R6.4um~R12.5um;

4. The bottom of the countersunk bolt holes on the components must be repaired and leveled with a flat bottom grinding head, with a surface roughness value of R3.2um~R6.4um, and there must be no residual material in any form;

5. The processed surface cannot be treated with any surface treatments such as oil, paint, or dyeing.

6. The surface of the component should not have obvious physical defects such as patterns and cracks.

7. The components must not have any form of substantial cracks. The so-called "substantial" refers to the physical cracks that have already formed in the component, and the cracks have a tendency to expand. Under natural light of 200mm in the human eye, there are no "substantial" visible cracks.

8. The pattern of the component shall not have a continuous white pattern, especially the pattern shall not penetrate the component. The width of the pattern shall be less than 1/1000 of the overall size of the component, and the length or extension length shall not exceed 2/3 of the overall size of the component.

The above information is for your reference.