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Stampings in the metal processing, inspection methods and standards

by:Fortuna     2021-02-13
Dongguan metal stamping parts inspection method and standard 1, metal stamping parts touch test with a clean cloth to clean the surface of the outer covering parts. Inspector need to wear the touch gloves along the longitudinal pressing close to touch on the surface of the stamping, the inspection method depends on the checker's experience. Abrasive grinding if necessary by detection of suspicious areas and verified, but this method is an effective method of quick inspection. 2, hardware stamping oil stone grinding 1) , first of all, with a clean gauze will clean the surface of the outer covering parts, and then polished with oil stone ( 20 * 20 x 100 mm or larger) , have the place with circular arc and hard-to-reach places with relatively small abrasive polishing ( For example: 8 x 100 mm semicircle sharpening stone) 2) Surface condition, selection of abrasive particle size depends on the ( Such as roughness, galvanized, etc. ) 。 Suggest using fine-grained whetstone. Oilstone grinding basically along the longitudinal direction, and a good joint on the surface of the stamping parts and some special place can also supplement horizontal grinding. 3, metal stamping parts of flexible gauze grinding with a clean cloth to clean the surface of the outer covering parts. With flexible sand nets to stamping surface along the longitudinal grinding to the surface of the whole, any pitting, indentation can easily be found. 4, metal stamping parts with oil test with a clean cloth to clean the surface of the outer covering parts. Again with a clean brush oil evenly across the same direction to the stamping parts of the outer surface. Under the strong light of pressing finish coating oil test, suggested that the vertical pressing on the body position. Using this method can be easily found on the stamping of slight pitting, pond, flat ripple. 5, metal stamping parts visual inspection visual detection is mainly used to detect the appearance of the stamping parts and 6, metal stamping parts fixture macro defect inspection put stamping parts in a fixture, fixture based on manual operation requirements, to test the south leather stamping on a piece of: stainless steel card buckle plastic wood is a new environmental protection energy conservation compound materials
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