BRAZING AND SOLDERING EXAM
QUESTIONS WITH CORRECT
ANSWERS
What would be the difference between braze welding and brazing? - ANSWER
In braze welding the filler metal is not distributed by capillary action
Braze welding would not be a satisfactory method of joining materials when? -
ANSWER The finished product operates at high temperatures
Who has developed specifications and a classification systems for oxy-fuel,
braze welding and fusion welding filler metals? - ANSWER AWS American
Welding Society
What does the "R" indicate in the designation R100? - ANSWER Rod
If you are looking for a filler rod for general purpose oxy-fuel welding, that
possessed medium strength and good ductility - ANSWER R60
The filler metal designated BAg, would fall into which filler metal category? -
ANSWER Silver filler metals
What does the 1 indicate with the filler metal designation BCup-1? - ANSWER
Chemical composition of the rod
Why is clean metal so important when brazing? - ANSWER The filler metal
will not flow through capillary action if the metal is not clean.
What is the primary purpose of applying flux to all surfaces that will be brazed?
- ANSWER Protect the joint from oxidation during the heating and flowing
process
What could happen if you overheated the brazing joint before adding filler
metal? - ANSWER Oxidation
, What should be removed from the brazed joint after it has been completed
because of its corrosive properties? - ANSWER Flux
What type of joints are preferred for brazing operations because they offer more
surface area for the metal bonding to take place? - ANSWER Lap Joints
*Midterm Question*
High amount of silver, in silver-copper brazing alloys do not wet out well while
torch brazing, What is done to help overcome this problem? - ANSWER
Cadmium and zinc are added to the filler metal
What type of fumes can be toxic while brazing? - ANSWER Cadmium Fumes
Which filler metal would be used primarily for 300-400 series stainless steel? -
ANSWER BNi Nickel Brazing Alloys
What type of filler metal would be used where maximum resistance to oxidation
and corrosion are required? - ANSWER BAu Gold Brazing Alloys
The molten filler metal must wet the base metal in order to achieve the proper
metallic bond. This action can be referred to as? - ANSWER Tinning
Where a high quality joint is required, what is the rule? - ANSWER Proper
cleanliness that matches the type of material being prepared.
What can happen if you use a grinder in the preparation of cast iron materials? -
ANSWER Smear free carbon
In general, what should be the torch angle while brazing? - ANSWER 1/2 of
the joint angle
As you bring the torch closer to the work piece, what affect would this have on
the puddle flow and penetration? - ANSWER More penetration, narrower
puddle
What type of torch manipulation can help control weld puddle temperature? -
ANSWER Stepping action
QUESTIONS WITH CORRECT
ANSWERS
What would be the difference between braze welding and brazing? - ANSWER
In braze welding the filler metal is not distributed by capillary action
Braze welding would not be a satisfactory method of joining materials when? -
ANSWER The finished product operates at high temperatures
Who has developed specifications and a classification systems for oxy-fuel,
braze welding and fusion welding filler metals? - ANSWER AWS American
Welding Society
What does the "R" indicate in the designation R100? - ANSWER Rod
If you are looking for a filler rod for general purpose oxy-fuel welding, that
possessed medium strength and good ductility - ANSWER R60
The filler metal designated BAg, would fall into which filler metal category? -
ANSWER Silver filler metals
What does the 1 indicate with the filler metal designation BCup-1? - ANSWER
Chemical composition of the rod
Why is clean metal so important when brazing? - ANSWER The filler metal
will not flow through capillary action if the metal is not clean.
What is the primary purpose of applying flux to all surfaces that will be brazed?
- ANSWER Protect the joint from oxidation during the heating and flowing
process
What could happen if you overheated the brazing joint before adding filler
metal? - ANSWER Oxidation
, What should be removed from the brazed joint after it has been completed
because of its corrosive properties? - ANSWER Flux
What type of joints are preferred for brazing operations because they offer more
surface area for the metal bonding to take place? - ANSWER Lap Joints
*Midterm Question*
High amount of silver, in silver-copper brazing alloys do not wet out well while
torch brazing, What is done to help overcome this problem? - ANSWER
Cadmium and zinc are added to the filler metal
What type of fumes can be toxic while brazing? - ANSWER Cadmium Fumes
Which filler metal would be used primarily for 300-400 series stainless steel? -
ANSWER BNi Nickel Brazing Alloys
What type of filler metal would be used where maximum resistance to oxidation
and corrosion are required? - ANSWER BAu Gold Brazing Alloys
The molten filler metal must wet the base metal in order to achieve the proper
metallic bond. This action can be referred to as? - ANSWER Tinning
Where a high quality joint is required, what is the rule? - ANSWER Proper
cleanliness that matches the type of material being prepared.
What can happen if you use a grinder in the preparation of cast iron materials? -
ANSWER Smear free carbon
In general, what should be the torch angle while brazing? - ANSWER 1/2 of
the joint angle
As you bring the torch closer to the work piece, what affect would this have on
the puddle flow and penetration? - ANSWER More penetration, narrower
puddle
What type of torch manipulation can help control weld puddle temperature? -
ANSWER Stepping action
