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Design of a braze joint that aviods the braze alloy from dripping Disclosure Number: IPCOM000015716D
Original Publication Date: 2002-May-21
Included in the Prior Art Database: 2003-Jun-21

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The invention deals with the furnace brazing of a stack of fins using spacers clad with braze alloy as shown in the following figure. In a typical furnace brazing operation, the fins and the spacers are stacked together and held together using a spring loaded fixture. When the assembly is heated to above the melting range of the braze alloy, the brazing alloy melts and wets the two faying surfaces. But the spring load squeezes the molten braze alloy out of the joint. The braze alloy drips down the fin walls. The proposed invention solves the problem of the braze alloy dripping down the fin walls as shown in the figure below. Braze alloy Spacer Fin Fin