Few people know the inspection method of bad precision stamping parts, hardware will tell you

Inspection method for poor precision stamping parts: 1. Inspection method for the round corners of precision stamping parts: visual inspection and inspection tool measurement of round corner radius is not even enough, not clear and smooth enough. Outer cover parts are not allowed. The irregular rounded corners of some assembly surfaces and lap surfaces of the inner cover parts not only affect the appearance of precision stamping parts, but also affect welding and assembly seriously. 2. Inspection method of precision stamping parts: visual inspection. The existence of pits seriously affects the appearance quality of the covering parts after painting, which is a defect that customers cannot tolerate. Large-area pits will also affect the strength and fatigue of precision stamping parts, and they cannot be recovered. 3. Inspection method for precision material defects: visual standard: the strength of the material does not meet the requirements, the traces left by the rolled steel plate, overlap, orange peel, streaks, loose galvanized surface, and peeling of the galvanized layer. 4. Inspection methods for deformation (protrusions, depressions, waves) of precision stamping parts: visual inspection, sanding with oilstone, touching, oiling. Type A defects: defects that users cannot accept. Users without training can also notice that type A is flat. After the pond is found, the precision stamping parts must be frozen immediately. Type B defect: It is an unpleasant defect. It is a type C defect that is tangible, visible and determinable on the outer surface of precision stamping parts: it is a defect that needs to be corrected, most of which are ambiguous. In this case, it can only be seen after the whetstone is polished. 5. Inspection method for roughing, indentation and scratching of precision stamping parts: the external surface of the outer covering is not allowed to have roughening, scratches, and indentation; the inner surface of the outer covering is not allowed to have scratches, which affect the quality of the outer surface. Indentation. The surface of the inner cover is not allowed to have serious scratches and indentations that may cause the parts to crack. 6. Inspection method for wrinkle of precision stamping parts: visually, the outer cover is not allowed to have any wrinkles that customers can easily detect, and the inner cover is not allowed to have serious wrinkles that may cause material overlap. The above is about the inspection methods for the defective precision stamping parts, I hope it will be helpful to you.