Inspection method for sheet metal parts

Sheet metal parts with clean gauze to wipe the surface of the cover parts clean. Inspectors are required to wear contact gloves along the length of the stamping part to adhere to the appearance of the stamping part. This inspection method depends on the inspector's experience. It can be used to grind and verify the suspicious areas detected by oilstone, but this method can be regarded as an effective and rapid detection method. Then the abrasive stone (20 x 20 x 100mm or larger), the local arc and difficult to reach the local relatively small abrasive stone (for example: 8 x 100mm semi-circular abrasive stone), the selection of the particle size of the abrasive stone depends on the appearance (such as roughness, galvanized, etc.).

Fine grained whetstone is recommended. The direction of the whetstone grinding is basically along the longitudinal, and very good fit the appearance of the stamping parts, some special local can supplement the horizontal grinding. With the flexible sand mesh close to the stamping part surface along the longitudinal grinding to the entire surface, any pitting, indentation can be easily found. Apply oil evenly in the same direction with a clean brush to all outer surfaces of the stamping parts. The oil coated stamping parts on the strong light inspection, the stamping parts stand on the body orientation. With this method, it is easy to find the small pitting, dimple and ripple on the stamping parts.