When the importance of producing a perfect brazed joint is uppermost, vacuum brazing is a highly effective method of joining two parts. Due to the nature of the vacuum, heat is evenly distributed and part production is consistent. Brazing requires three components: two parent metal pieces and a filler to join them. In the furnace, the components are arranged so that the filler will melt and flow on the base pieces, and join them solidly when cooled. Vacuum brazing provides strength, durability, and reliability unmatched by other metal joining methods. It also requires no secondary fabrication or finishing.

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The demands of heat treatment industry are for higher temperatures, lower pressures, rapid heating and cooling capabilities, and higher production rates.  This has inevitably led to the use of so-called “cold-wall” vacuum furnaces, to the detriment of hot-wall furnaces, which are now considered obsolete. So, let’s see hot-wall and cold-wall furnaces - what could these be and how do they differ from each other?

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Nadcap is recognized as the premier accreditation program for aerospace suppliers. For a heat treater, Nadcap accreditation is crucial if you are trying to service the aerospace and defense sectors. Of course, Nadcap is a difficult and costly accreditation to obtain. But Nadcap is more than just obtaining an accreditation...

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