Red Seal Welding Practice Exam

Brazing takes place using a filler metal that becomes liquid at what temperature?

1. 450 degrees C

2. 350 degrees C

3. 550 degrees C

4. 250 degrees C

The correct answer is: 450 degrees C

Brazing is a joining process that uses a filler metal, typically in solid form, to connect two pieces of metal together. This filler metal is heated until it reaches its liquid state, allowing it to form a bond between the two pieces of metal. In order for the filler metal to become liquid, it must reach a certain temperature. The correct temperature for this process is 450 degrees C, making option A the correct answer. Options B, C, and D are incorrect because they do not meet the necessary temperature requirement for the filler metal to become liquid. If the temperature is too low, the filler metal will not melt and bond with the metal pieces, and if the temperature is too high, it may result in damage to the metal parts being joined. Therefore, it is important to have a precise temperature control in order to execute a successful brazing process.