Test method of several kinds of metal stamping

Several kinds of metal stamping dongguan inspection methods: 1 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 metal stamping, the inspection method depends on the surrounding his experience in inspection. Abrasive grinding if necessary by detection of suspicious areas and verified, but this method is an effective method of quick inspection. 2 soft 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 around him. 3 oilstone 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. Abrasive polishing basically along the longitudinal direction, and a good joint stamping the surface of the problem, some special place can also supplement horizontal grinding. 4 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. Finish paint oil stamping I listen to my he under the strong light inspection, 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 place stamping parts, fixture, test fixture, fixture based on manual operation requirements, testing 6, visual inspection of metal stamping parts visual detection is mainly used to detect the appearance of the stamping parts and an article on macroscopic defects: metal stamping parts of hardness testing