Cold die forging - stamping in which section metal is used without preheating. The volumetric cold stamping itself is subdivided into several types:
- cold extrusion;
- cold drop;
- cold volumetric molding.
It also has a number of advantages over other technologies. For example, compared to cutting, cold die forging gives: greater productivity, less metal wasted ( no chips), durability and reliability of finished parts.
Compared to the process of hot forging, the technology also has advantages: decarburization does not occur on the surface of the parent metal, the metal does not need to be heated before work, and during cold forging there is no need for descaling.
Most often, the technology of cold die forging is used for the production of fasteners (nuts, bolts, etc.), for the production of parts for cars, aircraft and, in general, vehicles.
The process of cold die forging itself does not look so difficult. Parts are obtained by splitting or plastic deformation of metal using stamps. Namely, the metal is fixed on a special machine, and the deformation process takes place by means of dies that are attached to the presses. Hydraulic or mechanical presses are most commonly used for cold die forging. This technology makes the source material stronger, and the finished elements often do not need to be modified by other technologies.
