Improved Corrosion Resistance of Aluminum Brazing Sheet by a Post-Brazing Heat Treatment

Transport Phenomena Involved in Controlled Atmosphere Brazing of Microchannel Aluminum Heat Exchanger

Controlled atmosphere brazing (CAB) is a state-of-the-art joining technology associated with high production rates of many products, including microchannel aluminum heat exchangers. The complex designs of highly augmented compact heat transfer surfaces impose very difficult requirements for a brazing process. Regardless of the fact that brazing is a highly developed engineering art, many state-...

Brazing & Soldering Today

Brazed components play an essential role in consistent joining techniques. The brazing process is characterized by low process temperatures and fast processing times, compared to welding techniques. Beside the resulting low manufacturing costs, brazing can join dissimilar materials, e.g. metals and ceramics. Consequently, brazing provides potential for many industrial applications like the prod...

Brazing & Soldering Today

JULY 2012 50 High-temperature solder alloys are extensively used in dieattach, power semiconductor, and optical device packaging, flip-chip packaging, etc. Current industry standard solders for these applications are mainly high-lead solders (90–97 wt-% Pb) and gold-based eutectic solder alloys such as the 80Au20Sn solder. The die-attach process involves connecting the silicon die or chips to a...

The Influence of Brazing on Very Compact Heat Exchanger Surfaces

Three geometrically similar offset rectangular platefin surfaces with area densities in the range from goo to 2000 ft 2/ft3 were tested to establish the heat transfer., j-NR~ and flow friction, f-NR, characteristics. The Reynolds number range was from 60 to 3000. One surface was unbrazed while the other two, because of a two-to-one difference in plate, fin and offset spacing dimensions~ were ch...

Nickel-chromium-based Amorphous Brazing Foils for Continuous Furnace Brazing of Stainless Steel