Joining processes
1999; Elsevier BV; Linguagem: Inglês
10.1016/b978-034073162-8/50012-6
Autores Tópico(s)Welding Techniques and Residual Stresses
ResumoJoining processes are those in which different pieces are joined together, thereby allowing more complicated or larger structures to be fabricated. A wide range of joining techniques is used in various manufacturing operations, including myriad different mechanical fasteners, adhesives, welding, brazing, and soldering. Major metal processing techniques include welding, brazing, and soldering. A characteristic of these techniques is that the interatomic bonding within the base material, or at least on the surface, is altered, changing the properties of the base material. The control of the base material properties during joining requires special attention to process parameters and has important ramifications in terms of serviceability. Welding also has important applications for the repair of structural assemblies. Welding processes are divided into two classes: fusion welding and solid state welding. Brazing achieves joining by the use of a filler metal, which is distributed between the surfaces to be mated. The filler metal melts at a temperature above 427°C but below the solidus temperature of the base metal. Soldering is very similar to brazing, but is associated with lower temperatures.
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