8-Liter Ion-Pump Design

Altair Technologies commitment to innovative product development has lead to a new look on an old design.  As mentioned last time, one of the technologies that has been submitted as a SBIR grant proposal is a new 8 liter ion pump design.  As promised, lets discuss a few of the proposed innovations in this entry. The current ionization pumps that are commercially available suffer from loss of vacu...
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CTE Sample Calculation

Our last blog entry discusses the importance of understanding the thermal expansion behavior of dissimilar materials when brazing.  This post will illustrate a sample calculation used for determining the nominal dimensions when designing an appropriate braze gap. CTE is used to calculate the dimensions needed at the time of fabrication, in order to achieve a desirable braze gap (.000” to .005”) a...
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Thermal Expansion and Brazing

Thermal expansion is the material property of a volume change in response to changes in temperature.  The net volume growth over a given temperature is dependant on the initial volume of the component.  So, for most common braze materials (copper, stainless steel, ceramics, etc), this expansion varies from four to twenty thousandths of an inch of growth per inch of material in a given direction.  ...
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Altair uses CAD modeling to optimize braze design

Parametric solid modeling has become a daily necessity for modern-day engineering and analysis design teams.  Since the development of affordable CAD (computer-aided design) packages in the late 80’s that can be operated on personal computers, most technology companies today utilize some CAD package for their product/tool development and documentation.  With the continual improvement of computer p...
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