What is the difference between stamping parts and castings

Light aluminum alloy, die-casting molding for; Cast iron pieces in general is nodular cast iron, strong but heavier; Stamping is convenient molding, see the stand or fall of quality steel plate with reliability, make the same parts, stamping parts generally lighter than cast iron is heavier than aluminum. Cold stamping generally no longer by machining, or only need a small amount of machining. Hot stamping precision and table layout state under cold stamping parts, but it's still right is better than that of castings, forgings, cutting processing capacity. 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 the quality requirement of the separation section. 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. 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. The difference between the stamping parts and castings, with a thin, uniform, the characteristics of strong light, the 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.