Impact Extrusion Compared to Other Processes
Impact Extrusion Versus Machining
Certain products can be turned out many times faster by impact extrusion than by screw machine or turret lathe. Piece by piece dimensional variations during a production run are slight. Surface finish is smooth and bright and requires no grinding or finishing operations. Being of wrought structure, parts take readily to decorative or protective coatings.
Impact Extrusion Versus Deep Drawing
IMPACTING is preferable to drawing when (1) the shell length is more than twice the diameter, (2) the base must be thicker than the side walls (i.e., having a heavy complex bottom), (3) the design incorporates lugs, bosses, projections or recesses, and (4) the shell length requires several draws.
Impact Extrusion Versus Forging
IMPACTED pieces are lighter than forged counterparts and are produced with minimum draft surfaces, closer dimensional tolerances and require less, if any machining.
Impact Extrusion Versus Casting
If the design of the part is within the limits of impacting and it is necessary for the part to be light in weight yet strong with smooth surfaces, the impact extrusion process may be preferable to casting. Thin wall parts may be produced by extrusion which would be difficult to cast. IMPACT EXTRUSION produces a non-porous item which is advantageous for secondary machining.
Impact Extrusion Versus Welding
Welding and brazing are used to join a number of components to form a subassembly. IMPACT EXTRUSION makes it possible to produce these subassemblies in one piece, faster and at a reduced labor cost. Connection failures and leaks are entirely eliminated by IMPACT EXTRUSION.
Advantages of Impact Extrusion
* Low Tooling Costs
* Long Tool Life
* High Production Output
* Economic Material Usage
* High Degree of Forming in Single Step
* Increased Physical Properties
* High Dimensional Accuracy and Surface Quality
* Corrosion Resistance
* Low Weight