Detection of embryos of engraved round metal logo-A

For the inspection of “Engraved Round Metal Logo Embryo” (Engraved Round Metal Logo Embryo), it is necessary to systematically evaluate the key dimensions such as dimensional accuracy, engraving quality, surface integrity, material properties and functionality, etc. The following are the specific inspection points and analysis:

1. Dimensional and shape accuracy inspection
   Inspection content:
   Whether key dimensions such as outer diameter, inner diameter (if any), thickness, etc. meet the design tolerance.
   Whether the roundness, flatness and other shape and positional tolerances meet the standards.
   Inspection method:
   High-precision dimensional inspection using coordinate measuring machine (CMM) or optical image measuring machine.
   Verify roundness and surface profile by roundness meter or laser scanner.
   Importance:
   Dimensional deviation may lead to subsequent assembly difficulties or affect the visual effect of the sign, which needs to be strictly controlled.
2. Engraving quality inspection
   Inspection content:
   The clarity, depth consistency and edge sharpness of the engraving pattern.
   Integrity of the text or pattern (no broken strokes, missing corners).
   The smoothness of the transition between the engraved area and the unengraved area.
   Inspection Method:
   Visual inspection (in conjunction with a magnifying glass or microscope) to assess detail.
   Measure depth of engraving and surface roughness using a laser confocal microscope or white light interferometer.
   Importance:
   The quality of engraving directly affects the legibility and aesthetics of the sign, and needs to be ensured to meet the design requirements.
3. Surface Integrity Inspection
   Detection content:
   Whether there are scratches, pits, oxidized layer and other defects on the surface.
   The bonding strength between the engraved area and the substrate (no skinning, peeling).
   Detection method:
   Scanning for surface defects visually or with the help of automatic optical inspection (AOI) equipment.
   Verify the bonding strength of the engraved layer to the substrate by adhesion test (e.g. tape tear test).
   Importance:
   Surface defects can degrade the product, and insufficient bond strength may cause the logo to peel off during use.