cast stainless or be-cu mold inserts

From: Pattison, Will (WPattison@Ignition.com)
Date: Fri Sep 29 2000 - 17:31:37 EEST


esteemed colleagues-
 
i have a client that has a perfect application for a cast mold insert. the
part in question contains shapes that are best taken directly from a
sculpted prototype (a leaf and vine garden motif), however, their last
experience with a beryllium-copper insert was not good. they found a void
in the tool that ultimately caused them to lose sales to a small customer
called wal-mart. bad problem. i've explained that if folks like
solidiform can cast parts for f-16's, then certainly it is possible to cast
a mold insert that doesn't have unwanted porosity, but the decision makers
are nervous.
 
now, i know all the pitfalls of investment casting mold inserts, especially
in aluminum. shrinkage, shrinkage, and shrinkage. so, what i want to hear
is names of suppliers who work in stainless who have experience and could
potentially help my client. this is a relatively low tolerance
application, but the inserts are quite large (the part is 9" x 4" x 14")
and will be multi-cavity. material is polypro or polyethylene, half a
million units per year.
 
will pattison, idsa
plano, tejas
ignition
www.ignitioninc.com <http://www.ignitioninc.com>

For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/



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