Touch inspection

Use clean gauze will be covering the surface clean. Inspectors should wear gloves touch along the stamping longitudinal clingy stamping surface touch, this method of inspection depends on the experience of the inspectors. Can be used when necessary to be penetrated burnish oil-stone suspicious area and verified, but this method is an effective fast testing method.

Oil-stone burnish

1, first with a clean gauze will be covering the surface wipe up, then grind with oil-stone (20 "x 20 x 100 mm or more), a circular arc place and hard to reach to the place with the relatively small oil-stone grinding (for example: 8 x 100 mm of semicircle oil-stone)
2, oil-stone particle size choose depends on the surface status (such as roughness, galvanized, etc.). The proposal with a fine grit oil-stone. The direction of the grinding oil-stone basically along the longitudinal, and good joint parts surface, some special place can also add horizontal burnish.

Flexible yarn nets burnish

Use clean gauze will be covering the surface clean. With flexible sand nets to stamping along the longitudinal surface grinding to the surface, and any hemp dot and creasing will be very easy to be found.

With oil inspection

Use clean gauze will be covering the surface clean. Garnish with clean brush along the same direction evenly coated oil to the surface of the stamping. After the oil with thestamping on strong light inspection, suggested that the stamping the shaft on body position. With this method can be easily found on the tiny stamping of hemp dot, flat pond, the ripple.

Visual inspection

Visual inspection main used to find the appearance of the stamping abnormal and macro defects.

Submit testing

Will the stamping into fixture, according to the operation of the submit the request, to stamping for testing.

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