|Die forging parts|
|Hot forging, die forging|
Forging is one of the oldest methods of metalworking. At its core, die forging is the process of forming raw metal without allowing the
material to completely melt. The metal remains in a solid state while an operator performs any combination of forming techniques such
as hammering, rolling, or pressing.
Compared to casting or other metalworking techniques, forging yields the most desirable physical characteristics—including a very high
degree of tensile strength—at an attractive price-point. These beneficial properties primarily come from changes to the metal’s grain. Since
the material is never melted, the percussive or compressive forces applied during forging force the grain to follow the flow of the finished
product.This creates components that are far stronger than their machined and casted counterparts.
THE DIE FORGING PROCESS
There are many subtypes of the broader forging process, so the exact steps involved in forming a product may vary. Most procedures,
however, will follow the same general outline.
1.Design and make tooling(die or mould) For larger production runs, this step might include the design and production of multiple dies
designed for flattening, forming, or cutting.
2.Once toolmaking have been completed, the actual metalworking can begin. First, the billet, or workpiece needs to be cut to
size. Once cut, it must then be heated to the proper temperature. Once heated, the billet is ready to be formed.
3. At this point, the billet may be heated and pressed
between two dies or inserted into a molded cavity and compressed. In some cases, the operator will leave the billet at room temperature and
work it manually with hammers in a process called cold forging.
4. Finally, there may be some necessary finishing procedures. For instance, some dies will produce flashing that must be trimmed.
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