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Manufacturing:
Metal Forming
Extrusion
and Drawing
Extrusion is a plastic
deformation process in which material is
forced under pressure to flow through one
or more die orifices to produce products
of the desired configuration. This process
provides a practical forming method for
producing a limitless variety of parallel-surfaced
shapes to meet almost any design requirement.
Other advantages include improving the microstructure
and physical properties of the material,
maintaining close tolerances, material conservation,
economical production, and increased design
flexibility.
Drawing is a process
of cold forming a flat precut metal blank
into a hollow vessel without excessive wrinkling,
thinning, or fracturing. The various forms
produced may be cylindrical or box shaped,
with straight or tapered sides or a combination
of straight, tapered, and curved sides.
The parts may vary from 1/4" (6mm) diam
parts or smaller to aircraft or automotive
parts large enough to require mechanical
handling equipment.
Specific Processes-
- Aluminum Extrusions
- Cold extrusion
- Drawing
- Hydrostatic extrusion
- Impact extrusion
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