Chapter 25 Flashcards
What kind of steel has been polished and reheated for tempering and produces an oxide film on the polished surface?
Tempered steel
Annealed steel
Quenched steel
Quenched steel
Name the tool that should be attached to bend, straighten, or shape metal with an oxyacetylene torch.
Tempering tip
Rosebud tip
Quenching tip
Rosebud tip
Match the following terms with their appropriate definitions.
The process used to reduce the hardness and brittleness of steel and to relieve its internal stresses
a.
Flame hardening
b.
Tempering
c.
Annealing
b.
Tempering
Match the following terms with their appropriate definitions.
A process whereby mild steel is heated to a cherry red glow and then quenched in water or oil to harden it.
a.
Flame hardening
b.
Tempering
c.
Annealing
a.
Flame hardening
Match the following terms with their appropriate definitions.
The process used to soften steel and remove internal strains
a.
Flame hardening
b.
Tempering
c.
Annealing
c.
Annealing
Which color emitted from heated metal would indicate the hottest temperature?
white
cherry red
dark red
black red
white
Which oxide color on reheated polished steel is the hottest?
blue
purple
brown
yellow
blue
___________________ of the metal generally occurs during the cool-down process after welding is done.
Expansion
Contraction
Contraction
Identify all the possible reasons Jeff thought may have caused the welds to break on the forklift extensions.
The weld was dunked in water after it was made.
The welder had the welding machine set improperly and did a poor job getting good penetration when making the initial
The welded extension was dropped into snow soon after being welded.
The metal was too cool when the welding took place.
The weld was dunked in water after it was made.
The welded extension was dropped into snow soon after being welded.
The metal was too cool when the welding took place.
In this video, HAZ stands for
Hazards And Zones
Hazard Affecting Zones
Heat Affecting Zone
Hot and Zesty
Heat Affecting zone
The Heat Affected Zone is a distance _________ and _________
the weld bead.
before , after
Identify all possible types of metal distortion that may occur during welding.
cracking
bends
bowing
twists
expansion
bends
bowing
twists
expansion
___________ of the metal may occur during the welding.
Expansion
Contraction
Expansion
The welds in the video did not fail at the weld point; they failed ___________ it.
behind
True or False
During the welding process, heat is transferred outward in multiple directions.
True
