BRAZING TEST QUESTIONS AND ANSWERS

BRAZING TEST QUESTIONS AND
ANSWERS


Surface to be tinned - ANSWER When thin continuous film of filler metal
precedes main part of filler metal

Where can tinning occur - ANSWER Only on metal that is clean, fluxed, and
heated to correct temp

Silver brazing - ANSWER Silver alloy filler metal with melting pt above 800
degrees but less then base metal

Difference between braze welding and soldering - ANSWER Welding-the
metals have melting points above 800 degrees
Soldering- melting point below 800 degrees

Size tip to silver braze sheet stock - ANSWER 4,5,6

Silver braze filler metal - ANSWER Non ferrous metals with melting point
above 800 degrees but below base metal

5 major characteristics of silver braze filler metal by navy specification -
ANSWER 1) low melting point 2) high tensile strength 3) high resistance to
corrosion 4) flows readily at lower temp 5) brazes to copper and copper allow

Metals used for silver braze - ANSWER Silver, copper, zinc, phosphorous,
cadmium, nickel

5 forms of silver brazing - ANSWER Strips, wires, pigs, shot, chips

Filler metal for ferrous metal - ANSWER Grade 0,1,2

Filler metal for copper and copper alloy - ANSWER Grade 3