Impacting offers a great number of advantages that are well known in the industry.
Fast: Impact extrusion is fast so parts can be
turned around quickly to meet your tightest deadlines.
Strong: The strength of an impact is equal to or in excess of the maximum strength
obtainable from any other metal forming technique including forging. The impacted part is a fully wrought, dense and porous-free structure.
Grain alignment is highly uniform, imparting maximum strength and toughness. This metallurgical condition cannot be secured by casting
or by machining a wrought bar.
Clean: There is no flash to be machined and no sand to be removed. There is no scale and there are
no parting lines. Finishing is usually unnecessary. Impacts have zero draft angles.
Tight tolerances: Wall thickness and part diameter
are typically +/- .005". Ovality for straight walls in F-temper can be held to within 0.001 in. per inch of diameter when the outside
diameter-to-wall ratio is less than 15.
Hardness: The non-heat-treatable alloys are work hardened by impacting. The heat-treatable
alloys can be heat treated in normal fashion after impacting.
Economical: Labor and metal savings alone are significant when compared
to machining. The slug may be accurately sized so that no metal need be trimmed from the completed impact. Since impacting tends to
develop an alloy's higher strength characteristics, it is often possible to use lower-cost alloys when the part is impacted. As we
stated above, the cost of a finished impact in many cases may be less than the cost of the bar stock from which it might have been
machined.
Eliminates machining: Impacts can replace machined components directly in many designs. In others, impacts are used to reduce
machining costs.
Simplifies assembly: Impacts may be used to replace riveted and welded assemblies with many benefits such as increased
strength, fatigue and corrosion resistance, reduced weight, improved appearance, reduced or eliminated finishing costs, greater piece-to-piece
uniformity and the elimination or reduction of final assembly costs.
Many uses: Impacts may be found in hydraulic systems, internal
combustion engines, electric motors, pneumatic tools, heat exchangers, textile machinery, office equipment, business machines, atomic
reactors, mechanical power transmissions, air dryers, firearms, computers, submarines, satellites, planes, automobiles, jet engines,
garden tools... wherever strong, precision parts are needed.
Impact Advantages
Best Metal Extrusions, Inc.
"Specializing in metal impact extrusion"
www.BestMetal.net
811 Fairway Drive
Bensenville, IL 60106
Tel: (630) 595-6505
Fax: (630) 595-4103