15230713671
AOCHENG
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产品类型：The stamping elbow
产品型号：89
产品厚度：sch40
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Stamping elbow forming is the earliest forming process used in mass production of seamless elbow, which has been replaced by hot pushing or other forming processes in the production of elbow of common specifications. However, in some specifications of elbow, the production quantity is small, the wall thickness is too thick or too thin.
The product is still in use when there are special requirements.The stamping elbow is formed with the pipe billet equal to the outside diameter of the elbow, and is directly pressed into shape by the press in the die.
Before stamping, the tube billet is placed on the lower die, the inner core and end die are loaded into the tube billet, the upper die moves downward to suppress, and the elbow is formed through the constraint of the outer die and the supporting effect of the inner die.
Compared with the hot pushing process, the appearance quality of stamping forming is not as good as the former.The outer arc of the stamping elbow is in a stretching state when forming, and there is no excess metal in other parts to compensate, so the wall thickness at the outer arc is about 10% thinner.But because it is suitable for single production and low cost, stamping elbow technology is mostly used in small batch, thick wall elbow manufacturing.
Stamping elbow is divided into cold stamping and hot stamping, usually according to the material properties and equipment capacity to choose cold stamping or hot stamping.
The forming process of cold extrusion elbow is to use the commonly used elbow forming machine
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