Читать книгу Designing Weldments - Группа авторов - Страница 42

Welding is an activity significantly aligned with melting of metals by application of heat. Elemental metals have different melting points, and alloy metals have different range of melting temperature. Higher the melting temperature larger amount of heat is required to melt the metal being welded. This requires proper selection of welding process by the welding engineer.

If however joining is planned by Brazing or soldering then too, selection of heat source assumes importance because the heat source should be able to melt the brazing rod to wet both joining surfaces.

For welding two different metals that have significantly differing melting points or ranges becomes a challenge to a welding engineer, a well-considered heat source is necessary and welding procedure should be developed to regulate application and control of welding heat.