Metal stamping parts and castings, forgings, compared with a thin, uniform, the characteristics of light and strong.
Metal stamping parts can make other methods are difficult to manufacture with reinforcing rib, rib flanging, ups and downs, or artifacts, in order to improve its stiffness.
Because use precision mould, workpiece precision can reach micron grade, and repeat precision is high, the specification is consistent, can punch a hole nest, convex sets, etc.
Cold stamping generally no longer by machining, or only need a small amount of metal stamping parts machining.
Hot stamping precision and surface state is lower than the cold stamping parts, but it's still better than the castings, forgings, cutting processing capacity.
Metal stamping parts with sheet metal surface and internal performance of stamping has great influence on the quality of the finished product, request stamping material thickness precision, uniform;
Smooth surface, no spots, no scar, no scratch, no surface crack, etc. ;
Yield strength evenly, no obvious directivity;
High uniform elongation;
Low strain hardening.
Stamping is efficient production methods, the use of compound die, especially the multi-station progressive die, it can be finished in a pressure on multichannel stamping process, realize the pick-up uncoiling, leveling, cutting to the forming and finishing of automatic production.
High production efficiency, good working conditions, low production cost, general can produce hundreds of pieces per minute.
Stamping process for mainly according to classification, can be divided into separation process and forming process two kinds big.
Separation process is also called the blanking, and its purpose is to make from the sheet metal stamping parts along the contour line must be separated, and at the same time guarantee the quality requirements of the separation section.
Forming process is designed to make sheet metal under the condition of not to break the billet occurred plastic deformation, made into the required shape and size of the workpiece.
In the actual production, is often a variety of process integrated applied to an artifact.
Cutting, bending, shear, deep drawing, bulging, spinning, correction is several main stamping process.
A common problem of the previous: hardware industry