Safety, PPE & Tools
You should have this safety tool nearby before soldering or brazing with an open flame?
Fire Extinguisher
When steel wool is used to clean copper tubing, it should be _____.
No. 2
A fusible alloy that melts below 842 oF and is used to join metals
Solder
When brazing very small joints or thin metal, the type of flame used in order to prevent the base metal from melting is a(n) _____.
carburizing flame
True or False. An acetylene tank must always be used in an upright position
True
What type of clothing fabrics should be avoided while soldering or brazing
Synthetic
Soldering and brazing flux should be applied using a ______.
Brush
The temperature needed to melt the filler material in soldering is below _____oF.
842 oF
When brazing larger joints, _____.
small sections of the joint can be heated and brazed
Oxygen tanks are typically pressurized to around this pressure
2000 psi
True or False. Clothing made from cotton is safe for use while soldering or brazing.
True
Metals and alloys that have no iron are referred to as being _____ .
nonferrous
Solder joints are used in applications where the maximum temperature of the liquids is _____.
250 oF
When using a brazing flux, it should be applied _____.
only to the tube end
This gas is used to purge the inside of copper tubing while brazing joints
Nitrogen
Grease and oil must be kept away from oxygen tanks because they can cause an _______.
Explosion
A process that reduces surface tension to make molten solder flow throughout the joint.
Wetting
The filler metals used in soldering usually melt in a temperature range of
375 oF to 500 oF
BAg-5 filler metal is used when brazing _____ metals.
dissimilar
What type of high content filler metal is used when copper is being brazed to aluminum or steel?
Silver
The inside of a freshly cut tube should be have any burrs removed using a ____ .
Reamer or Deburring Tool
True or False. It is usually okay to use brazing flux when soldering
False
Heat first applied here when soldering a joint
tubing
The volume capacity of an acetylene B tank is _____ ft3.
40
The minimum tint needed on welding goggle lenses needed to protect your eyes while brazing
#4