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Wellman's unique computer
controlled low pressure casting process allows walls of this
near-net-shape missile fuel module to be cast 0.090". Requirements
include mechanical properties of UTS 50 Kpsi, YS 40 Kpsi, 5%
E. RMS 125 surface finish; and maximum weight restrictions.
Complex jet engine inlets
like this one are ideal applications for low pressure pouring
technology. Inlets have been cast in A357, C355, and A201 aluminum
alloys.
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Pressure Casting Center |
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Pushing casting
technology to its limits to meet the needs of our customers has
always been our philosophy at Wellman. The low pressure casting
equipment shown at right was custom designed and built to our
specifications and is being used to produce castings to today's
most challenging design standards. By combining precision molding
techniques with the unique pouring process and computer control,
complex, thin-walled sand castings can be made with high precision
without the sacrifice in strength encountered with other precision
processes. We invite you to challenge us with your own critical
casting requirements and let us show you how this advanced technology
can make a difference. Take a look at our capabilities described
below. Then give us a challenge.
Process Capabilities:
| Alloys |
All
aerospace aluminum alloys including A357, A201, A206, C355, A356 |
Casting Wall
Thickness |
Ideal
applications 0.060" - 0.150" No maximum wall thickness
Tolerance ±0.015" - ± 0.030" depending
on wall thickness; typically ±0.020" for walls 0.080"
thick For less than ±0.015" or less than 0.060"
wall thickness consult foundry |
Dimensional
Tolerance |
Features
generally ±0.030" up to 12" dia. Add 0.0005"/inch
in excess of 12" to a maximum of ±0.100" |
Casting
Size |
Maximum
Envelope* 36" X 42" X 60" *Consult Foundry Engineering
Typical Mold Within 42" Cube |
Casting
Weight |
Maximum
poured weight 660 Ibs (300 kg) |
- As
Poured |
Typical
range: 20-250 Ibs (10-115 kg) Cast wt. to ship wt. ratios vary
depending upon configuration; generally between 3/1 to 6/1 |
- As
Shipped |
Typical
finished casting weights from 5-175 Ibs (2.5-80 kg) |
Surface
Finish |
As cast
- RMS 125-250 Can be finished to RMS 100-125 |
Mechanical
Strength |
Exceeds
AMS and/or MIL Spec requirements for alloy and temper designated
Typical A357-T6 52 Kpsi - 43 Kpsi - 6%E |
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