FINAL EXAM Flashcards
produce a high temperature flame, over 3000 degrees. It is the only mixture not enough to melt steel
OXYACETYLENE
has a left hand thread
ACETYLENE
shoulder is a maroon
ACETYLENE
the shoulder is white
OXYGEN
have a right hand
OXYGEN
it is cylinders that separated from fuel gas cylinder
OXYGEN
cause a fire to burn more fiercely and a mixture
OXYGEN
fitted with regulators to reduce gas pressure in the cylinder
CYLINDERS
has two gauges, high and low pressure gauge
REGULATORS
what kind of pressure in the gas of cylinder
HIGH PRESSURE
what kind of pressure in the gas of the torch
LOW PRESSURE
ab acetylene cylinder can be opened slightly to blow out the threads
VALVE THREADS
it should be cleaned before screwing in the regulator
VALVE THREAD
mixed in the hand held torch or blowpipe
GASES
between regulator and torch should be color coded
HOSES
should be kept as short as possible and users should check periodically
HOSES
must always be used upright
ACETYLENE
should be checked leaks before any welding is attempted
JOINTS AND HOSES
should be lit with a friction lighter or stationary pilot flame to avoid burning hands
TORCH
a single cracking or popping sound
BACKFIRE
a shrill hissing sound when the flame is burning inside the torch
FLASHBACK
automatic flame trap device designed not only the quench the flame
FLASHBACK ARRESTOR
BASIC ELEMENTS OF BLUEPRINT
LINE
DIMENSION
NOTES
give shape and dimension
LINE
give size and location
DIMENSION
give details of construction
NOTES
TYPES OF DIMENSION
OVERALL
SIZE
LOCATION
describes total distance
OVERALL
gives information
SIZE
gives information concerning location
LOCATION
DIMENSION TO LOOK FOR ON A BLUEPRINT
HEIGHT
WIDTH
DEPTH
used as a means of communication between a designer such as shop foreman
WELDING BLUEPRINT SYMBOLS
a welding symbol used for designating the welding, brazing and cutting
TAIL
a document that gives direction to the welder by providing information
WLDING PROCEDURE SPECIFICATION
JOINT TYPES
BUTT
T JOINT
CORNER
LAP
EDGE
SIX BASIC TYPES OF WELDS
FILLET
GROOVE
PLUG OR SLOT
SPOT
SEAM
STUD
most recognized
FILLET
edge to edge joints
GROOVE
connect overlapping
PLUG OR SLOT
connect overlapping pieces
SPOT
similar process to spot
SEAM
commonly practice in many shops
STUD