Soldering and Brazing Exam QUESTIONS
AND CORRECT ANSWERS
Filler metals used for soldering usually melt at a temperature of ... - CORRECT
ANSWER 375°F to 500°F
The melting point of the filler metal used for soldering and brazing must be _____________________
the two metals that are being joined - CORRECT ANSWER lower than
Filler metal used for soldering contains what? - CORRECT ANSWER Lead
The most commonly used solder for refrigeration tubing consist of what? - CORRECT
ANSWER 95% tin, 5% silver
Both soldering and brazing fluxes do what? - CORRECT ANSWER indicate the temperature of
the copper
The filler metal used for brazing usually melts
at a temp. of ... - CORRECT ANSWER 1200°F to 1500°F
The oxygen cylinder used with oxyacetylene heating equipment contains oxygen stored at a pressure
of what? - CORRECT ANSWER 2000 psig
When using oxyacetylene heating equipment for brazing, the acetylene regulator should never be
adjusted to supply a pressure higher than what? - CORRECT ANSWER 15 psig
What flame is used for almost all brazing applications? - CORRECT ANSWER Carburizing
To safely purge tubing while brazing, the tubing should be purged with what? - CORRECT
ANSWER nitrogen
AND CORRECT ANSWERS
Filler metals used for soldering usually melt at a temperature of ... - CORRECT
ANSWER 375°F to 500°F
The melting point of the filler metal used for soldering and brazing must be _____________________
the two metals that are being joined - CORRECT ANSWER lower than
Filler metal used for soldering contains what? - CORRECT ANSWER Lead
The most commonly used solder for refrigeration tubing consist of what? - CORRECT
ANSWER 95% tin, 5% silver
Both soldering and brazing fluxes do what? - CORRECT ANSWER indicate the temperature of
the copper
The filler metal used for brazing usually melts
at a temp. of ... - CORRECT ANSWER 1200°F to 1500°F
The oxygen cylinder used with oxyacetylene heating equipment contains oxygen stored at a pressure
of what? - CORRECT ANSWER 2000 psig
When using oxyacetylene heating equipment for brazing, the acetylene regulator should never be
adjusted to supply a pressure higher than what? - CORRECT ANSWER 15 psig
What flame is used for almost all brazing applications? - CORRECT ANSWER Carburizing
To safely purge tubing while brazing, the tubing should be purged with what? - CORRECT
ANSWER nitrogen
