cg285
Stainless
- Joined
- Jan 31, 2007
- Location
- sumterville, fl
curious as to how this mandrel (maybe it's called something else) is bent to fit the mold halves properly.
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how is this mandrel made?
- Thread starter cg285
- Start date
- Replies 8
- Views 2,585
sfriedberg
Diamond
- Joined
- Oct 14, 2010
- Location
- Oregon, USA
I'd call that a "core" but maybe that type of molding calls it something else.
What I want to know is how it's removed from the molded part! Does the mold produce only 1 side of the final part, with the mandrel/core fitting closely into a recess (or flat) on the the size of the mold you're not showing us?
As to how it's made, it was probably just machined/filed to shape, possibly with a bend operation before/after machining to waste less material. Is it solid, or split on the plane of the bend?
What I want to know is how it's removed from the molded part! Does the mold produce only 1 side of the final part, with the mandrel/core fitting closely into a recess (or flat) on the the size of the mold you're not showing us?
As to how it's made, it was probably just machined/filed to shape, possibly with a bend operation before/after machining to waste less material. Is it solid, or split on the plane of the bend?
partsproduction
Titanium
- Joined
- Aug 22, 2011
- Location
- Oregon coast
Is the molded part urethane or rubber perhaps?
Royldean
Stainless
- Joined
- Dec 11, 2011
- Location
- Schwenksville, PA
I would call that part a "removable insert", but I think "Core" is correct, too. I also believe that this is a flexible part, like an intercooler pipe elbow or something like that.
onecut
Hot Rolled
- Joined
- Jun 27, 2013
- Location
- england-newcastle upon tyne
The shallow steps on side are obviously for seperating the "mold?" But whats the shallow slots near the O/D of joint face on the right "mold" part look like shallow ball end slots(Near the profile of mold on right)
sfriedberg
Diamond
- Joined
- Oct 14, 2010
- Location
- Oregon, USA
Maybe flash gutters, maybe something to do with mold cooling (with the supply/return in the unshown half of the mold.
cg285
Stainless
- Joined
- Jan 31, 2007
- Location
- sumterville, fl
it's a rubber part (fluorosilicone) and it's obvious it was made from bar stock as one end is rough sawn
cg285
Stainless
- Joined
- Jan 31, 2007
- Location
- sumterville, fl
that's where the excess rubber goes
Those are "over-flows". They aid in completing the fill of the mold. If they were not there, the rubber would cool in spots and prevent the entire cavity from filling.
