Steel all over the world, there are 60 ~ 70% is plank, most of which is made by stamping products.
Car body, chassis, fuel tank, radiator fin, the boiler steam drum, container shell, motor, electric iron core silicon steel sheet stamping processing.
Instruments and meters, household appliances, bicycles, office machinery, household utensils, and other products, also have a large number of stamping parts.
Compared with the castings, forgings, pressing with a thin, uniform, the characteristics of light and strong.
Stamping can make other methods are difficult to manufacture with rib stiffener, 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 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.
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.
Stamping 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.
A: on the development direction of plastic wood materials