What is the primary purpose of brazing?

The primary purpose of brazing is to produce strong metal joints. This process involves joining two or more metals together using a filler material that has a lower melting point than the metals being joined. During brazing, the filler metal is heated above its melting point and flows into the joint by capillary action, creating a strong bond once cooled.

Brazing is typically used for creating durable and robust connections in engineering applications, such as in the manufacture of heat exchangers, automotive parts, and various assemblies where strength and reliability are critical. The strength of the joints formed through brazing often surpasses that of the base metals, making it a preferred method for achieving strong and lasting connections.

The other choices do not align as closely with the primary intent of brazing. While some flexible joints can be achieved through different methods, flexibility is not the main goal of brazing. Additionally, brazing is focused on metal-to-metal connections rather than joining plastics, and while it may involve electrical components, the overarching purpose of brazing is not specifically for making electrical connections.