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Type your answer here... Extrusion is the open die punching process whether forging is close die punching process.
steel
Stamping involves a force applied to a die that removes a section of material, typically thin. Extrusion is a process where a force is applied to a fluid material which is pushed through a die creating the rough final form. Extrusion is much less wasteful in most circumstances.
1::drawing is pull type process where specimen of desired dia is simply pulled out through die opening...'where in extrusion it is push type process ...2::draing max. force applied is limited according to yield strenth of metal to be drawn....
An extruded product takes the shape of the exit nozzle or die whereas a calendaring process thins out the blob of material by passing it through a series of rollers which squeeze and flatten the material. sticky tape and cling film is made by calendaring but hose pipe is made by extrusion.