Vacuum Process Engineering, Inc. (VPE) is a thermal engineering and manufacturing company providing science-based metallurgical services, including precision brazing, diffusion bonding, hot pressing, heat treating, thin-film coating, complex assemblies, specialty cleaning, and materials testing & analysis. Furthermore, VPE offers extensive machine shop services. VPE is a thermal engineering and manufacturing company that specializes in the metallurgical services of precision brazing, diffusion bonding, hot pressing, heat treating, thin film coating, complex assemblies, specialty cleaning, as well as materials testing & analysis. VPE also offers extensive machine shop services. Furthermore, other VPE products include high-temperature retro-reflectors, pinch-off & pump-out tubes, as well as laminated & clad metal sheet. VPE Thermal LLC, a subsidiary company of VPE, designs and manufactures diffusion bonded microchannel heat exchangers (MCHEs), hydrogen pre-cooling heat exchangers (H2PC®), and smaller sized commercial off-the-shelf heat exchangers for a wide range of applications. Precision brazing Successful precision brazing can result in lower production costs as well as higher production yields. In addition, it can result in more robust end-use performance. For this reason, VPE has been developing and optimizing our precision brazing services since 1976. Furthermore, by combining materials science awareness with extensive experience, we are able to control the myriad of details that are critical for successful brazing. Vacuum Brazing The Vacuum Brazing Process Clean Process Ensures Contaminant-Free Brazes Vacuum Brazing employs vacuum as an ambient atmosphere so components undergoing the brazing process will not react with excessive oxygen, moisture, nitrogen, or other gaseous contaminants. In addition, by limiting the reactions with the surrounding atmosphere, we can create a clean environment that is conducive to filler alloy wetting and flow onto metal surfaces as well as into capillary joints. Furthermore, the vacuum environment can also reduce surface contamination from oxides and other compounds through the sublimation of the species due to chemical reduction. To clarify, the maintenance of a clean environment is essential to the production of contaminant-free brazes. Hence, VPE often utilizes cryogenic or turbomolecular pumping to assure the brazing environment is free of excessive hydrocarbons from the vacuum pumping system. Pre-Placement Helps Create the Strongest Possible Bond VPE pre-places the filler alloy on the assembly in such a location that as the furnace temperature raises and the filler metal alloy melts, it also flows into the assembly capillary joints and affects a good bond. Precise Vacuum Level Parameters Assure Quality Brazing Typical vacuum levels achieve 1E-5 to 1E-6 Torr during brazing, and much higher vacuums are used in several other reactive metal applications. Furthermore, in some applications, the partial pressure of inert gas is used to mitigate the volatilization of filler metals or parent materials. These partial pressures range from about 1 to 10 Torr.
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Opening Hours
| Monday | 5:00 pm - 5:00 pm |
|---|---|
| Tuesday | 9:00 am - 5:00 pm |
| Wednesday | 9:00 am - 5:00 pm |
| Thursday | 9:51 am - 5:00 pm |
| Friday | 9:00 am - 5:00 pm |
| Saturday | Closed |
| Sunday | Closed |
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