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Drop forging or also drop forming comes from the group of forming processes, more precisely massive forming processes.
The tool – the die – contains the molded part to be manufactured as a negative. The dies are moved against each other with great force and the material is worked into the desired shape.
The excess material is pushed into the so-called ridge. The deburring, i.e. the removal of the excess material, is carried out with the help of other tools, which act like a stamp.
The forgings convince with a homogeneous, dense fiber flow, which has neither pores nor other cavities.
Most often, die forming takes place at workpiece temperatures above the recrystallization temperature, which is why it is also referred to as hot forming.
In principle, all metals that can be kneaded after heating are suitable for drop forging. Most drop forgings are made from steel.