OXYFUEL AND BRAZE WELDING EXAM
QUESTIONS AND ANSWERS
What factors must be considered when selecting a proper filler metal? -
ANSWER match the filler metal chemistry and mechanical properties to that of
the parent metal
What does the AWS stand for? - ANSWER American Welding Society
In the designation R45 what does the R and 45 Stand for? - ANSWER R =
Rod
45 = 4500 tensile strength
How are brazing and braze welding rods classed? - ANSWER by the prefix B
to designate the brazing process
What elements are in the rod BCup-1? - ANSWER Copper, zinc, and
phosphorous
What elements are in the rod BA1Si? - ANSWER aluminum-silicon
List the six basic steps for a properly brazed joint - ANSWER 1.Good fit /
Proper clearance
2.Clean Metal
3.Proper fluxing
4.Assembly and support
5.Heating and flowing the brazing alloy
6.Final Cleaning
Why is it important to clean of left over flux residue? - ANSWER It is
corrosive
What joint clearances are recommended for capillary action to take place? -
ANSWER 0.001" to 0.005"
QUESTIONS AND ANSWERS
What factors must be considered when selecting a proper filler metal? -
ANSWER match the filler metal chemistry and mechanical properties to that of
the parent metal
What does the AWS stand for? - ANSWER American Welding Society
In the designation R45 what does the R and 45 Stand for? - ANSWER R =
Rod
45 = 4500 tensile strength
How are brazing and braze welding rods classed? - ANSWER by the prefix B
to designate the brazing process
What elements are in the rod BCup-1? - ANSWER Copper, zinc, and
phosphorous
What elements are in the rod BA1Si? - ANSWER aluminum-silicon
List the six basic steps for a properly brazed joint - ANSWER 1.Good fit /
Proper clearance
2.Clean Metal
3.Proper fluxing
4.Assembly and support
5.Heating and flowing the brazing alloy
6.Final Cleaning
Why is it important to clean of left over flux residue? - ANSWER It is
corrosive
What joint clearances are recommended for capillary action to take place? -
ANSWER 0.001" to 0.005"
