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2. Design of the extruded part. Design examples
Cold extrusion is not something to be done for pleasure, but only if the use of this technique generates relative savings, likely to lead to a more competitive product. Here are a few examples:
conditions to be met when considering the use of extrusion ;
factors to consider to improve manufacturing and make it more economical ;
and finally, the process leading to the final solution.
First, we need to remember that the problem generally arises in the following two contexts:
the part exists and the manufacturing method is to be changed, either to save money, or to better solve functional problems; let's not forget that the part may or may not have been designed with extrusion in mind: the manufacturer...
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Design of the extruded part. Design examples
Bibliography
Economic data
In France, there are two types of forge: integrated forges belonging to automakers, and stand-alone forges. Production by stand-alone forges alone rose from 4,850 t in 1970 to around 34,000 t in 1996. Figure A shows the evolution of tonnage delivered by stand-alone forges. At present, the automotive industry accounts for 94% of independent forges' output. The remainder is divided mainly between agricultural machinery and...
Websites
SNEF http://www.3s.hmg.inpg.fr
Friends http://www.amis-extrusion.fr
CEMEF http://www.ensmp.fr
Extruders
(non-exhaustive list)
FRIENDS
Gevelot
Fomer
Ascoforge SAFE
Setforge
Further information is available from SNEF (Syndicat national de l'estampage et de la forge).
Main software
(non-exhaustive list)
Forge 2 (2D calculation)Forge 3 (3D calculation)
DEFORM (2D/3D)
MarcAutoForge (2D/3D)
MSC SuperForge
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