ABSTRACT
Brazing alloy pastes are primarily used in mass production brazing. Those that are to be used in furnace brazing applications are homogeneous mixtures of powdered brazing filler material and a neutral organic binder. However, where brazing is to be undertaken in air and the brazing filler material incorporated into the paste needs a flux to perform in the required manner, it will be added to the paste during manufacturing. All pastes can be classified as being a member of one of three discrete groups:
1. Pastes that will be used for brazing processes to be undertaken in air 2. Pastes that will be used in reducing-atmosphere furnace brazing
applications 3. Pastes that will be used for vacuum brazing applications
While the manufacturing route for all three of the above groups is broadly similar, their basic formulations and method of use differ very substantially from one to the other. As a result, we need to consider the application and use of each type separately.
