Hello Tim and all, I use both Centrifugal and vacuum, I use my
centrifugal casters more than the vacuum, My main reason for this is
the cost of perforated flasks, and I=92m a tight wad, when I have to
compete with off shore casters for my crumbs.
If I had the money to spend, I would jump on a Neutec system from
Rio. In the late 70s a company I worked for in Los Angeles, had a
very early Induction machine that was unbelievable for it=92s day, the
quality of the castings was far superior to an open system .
I guess vacuum assist is OK for a cheap way out, but if you have the
clientele and enough work to lay out 20 or 30 thou. Go for an
induction system I really also think that centrifugal casting is not
far from becoming a thing of the past, for many reasons safety being
at the top of the list, in 30 years, I=92ve seen and received quite a
few burns, mostly from investment breaking down because some one
tried to get 1 extra row of pieces on a tree.
Another thing to consider is also during the casting process with
either vacuum or centrifugal, whether using a torch, or an electro
melt you will be exposing your molten metal to Oxygen, during the
pour or cast unless of course you are casting in a shielded
atmosphere. Memco used to sell a pretty nice unit for under 4000.00
back about 10 years ago, not sure if they are still around or not
but they were a good entry level commercial quality system for small
shop, but no where near as nice as the Neutec units.
I think it has become pretty well recognized that Vacuum casting
does yield superior results as far as getting the gases out and
yielding castings with less porosity if the burn out was good and
clean and the investment mixed correctly, Kind of like I think
blueberry is the best ice cream you know. ;^}
It all depends on budget, talent, or knowledge and how much will you
use it. And how good you want your casting to be.
Help others make informed buying decisions with Neutec USA. We
welcome your opinions and experiences with their products ordering,
customer service and and over all satisfaction.
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