Which process joins tubing by melting a filler metal into the joint at temperatures above 840 degrees Fahrenheit?

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Prepare for the ESCO Brazing and Soldering Test with quizzes, detailed hints, and explanations. Master the test content through diverse questions and excel in your certification exam!

Multiple Choice

Which process joins tubing by melting a filler metal into the joint at temperatures above 840 degrees Fahrenheit?

Explanation:
Brazing uses a filler metal that melts and flows into the joint to form the bond, while the base metals stay solid. The process is done at temperatures high enough to melt the filler metal, typically above 842°F, but below the melting points of the tubing materials. Flux helps remove oxides so the filler metal can wet and capillary-wick into the joint, creating a strong joint as it cools. This distinguishes brazing from soldering, which uses lower temperatures, and from welding or fusion, where the base metals themselves melt and fuse together.

Brazing uses a filler metal that melts and flows into the joint to form the bond, while the base metals stay solid. The process is done at temperatures high enough to melt the filler metal, typically above 842°F, but below the melting points of the tubing materials. Flux helps remove oxides so the filler metal can wet and capillary-wick into the joint, creating a strong joint as it cools. This distinguishes brazing from soldering, which uses lower temperatures, and from welding or fusion, where the base metals themselves melt and fuse together.

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