Wetting, Braze Flow and Filler Spreading

The term “wetting” is commonly used to describe the flow of braze alloy or braze filler across a surface. However, before we get more into wetting, let’s recap the brazing process: First, two components are placed very close to or in contact with each other and a braze filler metal is placed in contact with BOTH parts. The filler and components are heated to just past the melting temperature of th...
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Brazing Aplications Above 1000 C

Most of the brazing we do at Altair Technologies occurs between 800° C – 1270° C. Finding a suitable braze-alloy or “filler” to melt in this temperature range is not difficult. However finding a braze alloy, or even base materials, that will withstand operation over 1000° C can be tricky. One of the first questions to ask is what is the operating atmosphere or environment (high vacuum, air or?) an...
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Benefits of Plating Base Materials

Here at Altair Technologies we don’t maintain in-house plating capability and in general we try to avoid the use of plating(s) due to its additional costs and lead-times as well as yield issues associated with poor process controls. However, the plating of base material can benefit the operational performance and reliability of certain applications, benefit the brazing process and even assembly. (...
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The Perils of Copy Exact?

We do a lot of brazing for the semiconductor industry and virtually 100% of the time our process or product falls under “Copy Exact” or a similar process control, which mandates that each successive serial number be manufactured exactly the same way as the original First Article unit.   There are many benefits to Copy Exact, like repeatability and reliability.  However, (more…)
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Altair to Exhibit at AVS

Altair Technologies, Inc will be exhibiting in Booth # 317 @ the “AVS 56th International Symposium & Exhibition 2009” from November  8-13, 2009. http://www2.avs.org/symposium/AVS56/pages/info.html  Please stop-by and say, “Hello” and see what new products we have on display.
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Bakeout Capability at Altair Technologies

Altair Technologies Purchases a Dual Bell Sauder Bakeout Station  Altair is continuing to capitalize and bring new capabilities and services to the market.  Altair now has a fully functional cryo-pump bakeout station capable of over 600 C operation and fitted with an RGA sensor to detect various gas species.   The bells are large enough to handle high powered S-Band Accelerators as well as X-ray ...
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New X-ray Target Surface Finish

Altair Technologies’ develops a new X-ray Target Surface Finishing Process Altair has been making turnkey target assemblies for the x-ray and accelerator fields for almost 20 years.  Target materials are typically Tungsten, but can also be Rhodium or other suitable metals.   Target surface finishes can be on the order of 2 to 8 microns, which is typically achieved by lapping or polishing by hand ...
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Altair Technologies Applies for Patent

A fall-out from Altair’s continuous improvement program was the development of a simple yet novel fixture for brazing aluminum assemblies.  This new design/process replaces long-standing clamping mechanism with a fast, easy and 100% repeatable method for fixturing semiconductor aluminum assemblies saving tons of dollars on labor and providing for excellent braze quality and repeatable results.  Ch...
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Vacuum Aluminum Brazing 101

Many of our customers include machine shops who prefer to consign aluminum components to Altair Technologies for brazing. In order to provide a high quality braze joint, it is very important the components are properly prepared. I can't emphasize this enough and all too often inexperienced customers compare vacuum aluminum brazing to torch brazing having little concern for the machining of parts t...
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