Brazing Techniques Flashcard

Front

What is the recommended flow rate of nitrogen when brazing?

Back

10-15 scfh

Front

What is the purpose of using a deburring tool after cutting copper tubing?

Back

To remove internal burrs that can cause turbulence

Front

What color should copper tubing reach when properly heated for brazing?

Back

Dark to medium cherry red

Front

Which of the following is NOT a recommended safety precaution when brazing?
- Wearing safety glasses
- Having a fire extinguisher nearby
- Using bare hands for better control
- Having wet rags available

Back

Using bare hands for better control

Front

What is the purpose of flowing nitrogen while brazing?

Back

To prevent internal oxidation

Front

Which of the following metals does NOT require flux when brazing with phosphorus-bearing alloys? Brass, Steel, Copper, Aluminum

Back

Aluminum

Front

What is the purpose of wet rag putty in brazing?

Back

To protect critical components from heat

Front

When setting up an oxy-acetylene torch, what should you do first?

Back

Open the tank valves

Front

When brazing brass, what type of rod is best to use? Options: Phosphorus-bearing rod, Pure copper rod, High silver content, flux-coated rod, Aluminum rod

Back

High silver content, flux-coated rod

Front

What should you do after completing the brazing process?

Back

Leave the joint to cool naturally.