VaPore™

VaPore™

VaPore™ is Palmer Foundry’s proprietary process of producing vacuum tight aluminum castings of exceptional quality. Thousands of our aluminum castings are in service worldwide for critical high vacuum applications with a spotless record of no field failures due to casting defects or vacuum leaks. With 9 Torr pump down capabilities, VaPore™ castings are high performance, exceptional quality castings expertly finished by skilled craftsmen and high precision CNC machines. Casting is often a better and less expensive process of producing parts than machined aluminum billets or stainless steel weldments — and VaPore™ produces the best of the best — due to the many ways we’ve invented to control casting variables. With VaPore™, you get:

  • Casting Design Assistance: We ensure that the casting design is optimized for vacuum integrity and cost effectiveness.
  • Pattern Design: Our extensive experience in this specialized  eld means all necessary tooling is designed and constructed for long life and efficient casting production.
  • VaPore™6: Our specially developed aluminum alloy is optimized for vacuum tightness and highly managed porosity while maintaining excellent machining and polishing characteristics.
  • VaPore™ Metal Processing: Our sophisticated metal processing and handling technology delivers high quality metal that is free of impurities.
  • High Quality Mold Production: Exclusive molding and coremaking practices perfected over decades are an integral part of our VaPore™ process.
  • Complete Finishing: VaPore™ castings are finished by highly skilled craftsmen. Heat treating, straightening, and gauging of critical dimensions are closely controlled to meet and exceed your quality standards.
  • Quality & Process Control: Advanced serialization, sampling and our state-of-the-art inspection technology that digitizes the surface of the casting comprise our industry leading quality assurance system.
  • Machining & Final Finishing for Clean Room Assembly: We can recommend several highly qualified machining partners who complement the VaPore™ aluminum casting process. This makes it easy to purchase complete components consisting of VaPore™ aluminum casting that have been machined, polished, helium leak tested, cleaned, and packaged for clean room assembly.
Element %
Max/Range
Silicon
6.50 -7.50
Iron
.20
Copper
.20
Manganese
.10
Magnesium
.25 - .45
Zinc
.10
Titanium
.20
Others, each
.05
Others, total
.15
Aluminum
Balance
 
Minimum Mechanical Properties (test bars)
Ultimate Strength
Yield Strength
% Elongation
Typical Brinell Hardness
(ksi)
(ksi, .2%)
(in 2 inches)
(500 kg load, 10 mm ball)
34
24
3.0
70-105