SW BASIC: SOLDERING, BRAZING, BRAZE
WELDING AND WEARFACING EXAM
QUESTIONS WITH CORRECT ANSWERS
What type of solder is recommended for food containers? - ANSWER 96% tin
and 4% silver
You can braze tubing by using a filler-metal rod or what type of rings? -
ANSWER Silver alloy
(True or False) One of the advantages that brazing or braze welding has over
oxygas welding is that you can use it to join dissimilar metals. - ANSWER
True
Most solder alloys consist of ______? - ANSWER lead and tin
With (a) what type of flame and (b) at what temperature do you preheat parts
that require wearfacing? - ANSWER Neutral flame at 800 degrees
A pair of coppers has a weight designation of 3 pounds. This designation
indicates that each individual copper weighs _______. - ANSWER 1 1/2
pounds
Heating solder to a temperature higher than its working temperature increases
oxidation and changes the proportions of tin and _______? - ANSWER Lead
For which reason should you maintain a clearance of 0.001 inch to 0.003 inch
when lap joining two base metals with silver-based brazing filler metal? -
ANSWER To increase strength
What type of application should be used with paste or solution fluxes to ensure
a uniform coating on metals to be brazed? - ANSWER Brush
, Toward what location should you direct the torch flame when soldering
aluminum with a torch? - ANSWER Metal near the work
What technique should you use to manipulate a file? - ANSWER On each
forward stroke, bear down on the file without rocking it; on each return stroke,
let up on the file
Which function is NOT served by the use of flux in brazing operations? -
ANSWER Increasing the flow of brazing filler material
Which solder has the lowest melting point? - ANSWER 60/40
Which action should you take when soldering a bottom seam using solder
beads? - ANSWER • hold the copper in one position until the solder flows
freely into the seam
• draw the copper along the seam
• turn the work as you go
(True or False) The soldering, brazing, braze welding, and wearfacing processes
allow the joining of dissimilar metals, produce high strength joints, and do not
affect heat treatment or wrap the original metal as much as conventional fusion
welding. - ANSWER True
(True or False) Braze welding often produces bonds that are comparable to
those made by fusion welding without the destruction of the base metal
characteristics. - ANSWER True
What process is used to join two base metals together by using a filler metal
such as a hard solder? - ANSWER Brazing
What type of file should you use to file a soldering copper head during the filing
and tinning process? - ANSWER Single cut
(True or False) Before commencing wearfacing procedures, you must remove
scale, rust, and foreign matter from the metal surfaces. - ANSWER True
Which is NOT a purpose of wearfacing? - ANSWER To increase ductility
WELDING AND WEARFACING EXAM
QUESTIONS WITH CORRECT ANSWERS
What type of solder is recommended for food containers? - ANSWER 96% tin
and 4% silver
You can braze tubing by using a filler-metal rod or what type of rings? -
ANSWER Silver alloy
(True or False) One of the advantages that brazing or braze welding has over
oxygas welding is that you can use it to join dissimilar metals. - ANSWER
True
Most solder alloys consist of ______? - ANSWER lead and tin
With (a) what type of flame and (b) at what temperature do you preheat parts
that require wearfacing? - ANSWER Neutral flame at 800 degrees
A pair of coppers has a weight designation of 3 pounds. This designation
indicates that each individual copper weighs _______. - ANSWER 1 1/2
pounds
Heating solder to a temperature higher than its working temperature increases
oxidation and changes the proportions of tin and _______? - ANSWER Lead
For which reason should you maintain a clearance of 0.001 inch to 0.003 inch
when lap joining two base metals with silver-based brazing filler metal? -
ANSWER To increase strength
What type of application should be used with paste or solution fluxes to ensure
a uniform coating on metals to be brazed? - ANSWER Brush
, Toward what location should you direct the torch flame when soldering
aluminum with a torch? - ANSWER Metal near the work
What technique should you use to manipulate a file? - ANSWER On each
forward stroke, bear down on the file without rocking it; on each return stroke,
let up on the file
Which function is NOT served by the use of flux in brazing operations? -
ANSWER Increasing the flow of brazing filler material
Which solder has the lowest melting point? - ANSWER 60/40
Which action should you take when soldering a bottom seam using solder
beads? - ANSWER • hold the copper in one position until the solder flows
freely into the seam
• draw the copper along the seam
• turn the work as you go
(True or False) The soldering, brazing, braze welding, and wearfacing processes
allow the joining of dissimilar metals, produce high strength joints, and do not
affect heat treatment or wrap the original metal as much as conventional fusion
welding. - ANSWER True
(True or False) Braze welding often produces bonds that are comparable to
those made by fusion welding without the destruction of the base metal
characteristics. - ANSWER True
What process is used to join two base metals together by using a filler metal
such as a hard solder? - ANSWER Brazing
What type of file should you use to file a soldering copper head during the filing
and tinning process? - ANSWER Single cut
(True or False) Before commencing wearfacing procedures, you must remove
scale, rust, and foreign matter from the metal surfaces. - ANSWER True
Which is NOT a purpose of wearfacing? - ANSWER To increase ductility
