General requirements for appearance of precision stamping parts 'Hardware'

When we look at a precision stamping part, the first thing we see is its appearance. The appearance requirements for different precision stamping parts will be different, but there may be many people who don’t know the general appearance requirements between them. What is the appearance Is it unqualified or defective? Types of defects in the appearance of precision stamping parts: Cracks: The metal material is broken during the stamping process. Scratches: The surface of the metal parts is strip-shaped. Shallow grooves. Scratches: The surface of the material is caused by friction. Damage and oxidation: the material and the oxygen in the air chemically change and deform: the material causes appearance variation in the process of stamping or transfer. Burrs: incomplete material remains in the process of punching or trimming. Convex and concave marks: the surface of the material is abnormally convex or concave Die marks: Marks and stains left by the mold on the surface of the material during the stamping process. Stain: Oil stains or dirt attached to the surface during the processing process. As mentioned above, we can know that cracks, scratches, deformations, etc. occur on precision stamping parts. It is unqualified. The appearance of the precision stamping parts with the above points does not meet the requirements, so the appearance of the precision stamping parts manufactured by us cannot appear in the above situations.