Precision stamping parts are widely used in people's daily life, but most people are not very clear about the choice of precision stamping parts. Next, China metal stamping to introduce to you.
First, touch detection: wipe the surface of precision stamping parts with clean sand cloth. The inspector should wear the touch rubber gloves along the vertical of the precision stamping parts and touch the surface of the precision stamping parts. This kind of detection method depends on the working experience of the inspector. If necessary, the abnormal area being explored can be polished with whetstone and verified in many ways, but this method is nothing more than a practical and rapid detection method.
Two, whetstone polishing:
1. First wipe the surface of precision stamping parts with clean sand cloth, and then polish and polish with whetstone (20×20× 100 mm or large). The curved areas and areas that cannot be touched are polished with relatively small whetstone (such as: 8×100 mm semi-circular whetstone).
2. The selection of whetstone particle size distribution lies in the surface condition (such as surface roughness, hot dip galvanizing, etc.). Coarse-grained whetstone is proposed. Most of the orientation of whetstone polishing is carried out in the vertical direction, and it is very good to cater to the surface of precision stamping parts, and a part of the area can also fill the lateral polishing.
3. Polishing and polishing of soft diamond yarn, clean the surface of precision stamping parts with clean sand cloth. With soft sand mesh close to the surface of the precision stamping parts along the vertical polishing to all the surface, all the black spots, imprint will be very easy to find.
4. Oil detection, wipe the surface of precision stamping parts with clean sand cloth. Then use a clean soft brush to evenly grease all the outer surfaces of the stamping parts in the same direction. The oiled stamping parts are examined under strong light, and it is proposed to erect the stamping parts on the body of the car. With this method, the subtle black spots, dimples and wavy lines on the stamping parts can be detected very easily.
5, visual inspection: visual inspection is the key to finding the appearance of precision stamping parts abnormal and macroeconomic shortcomings.
6. Inspection of fixture: put the stamping parts into the fixture, and carry out inspection of the stamping parts according to the actual operation provisions of the usage instructions of fixture.