Test 4 Flashcards
(35 cards)
PPE Finishing room
- apron
-shoes
-glasses
-hat
-hearing protection
-snood
-face shield
-gloves
-long sleeves
what goes on a casting after shakeout
blue tag, heat and job number
biggest concern with arc
ability to affect surface hardness
defect removals
grind,chip,arc
big flask removal
backhoe
rework causes
over grind, over arc, over burn, over chip
MT
ferrous
PT
nonferrous
Finishing room objective
take rough casting to a neat state
why are risers/gates colored
to reuse and identify
ND
defects
thermal wire purpose
records the temperatures at various locations on the casting and test bar during heat process
flame impingement
when flames touch casting
value of heat treatment and quenching
meeting property requirements of the material speculations
where are procedures found
NNS COMMAND MEDIA
visual testing
good eyesight, on surface
magnetic particle testing (MT)
small Cracks on surface, cheap
liquid penetration
finds defects open to the surface
radiographic (RT)
defects inside casting
ultrasonic purpose and tools
sound waves
oscilloscope and transducer and goop
RT
size
UT
depth
inclusion defect
holes in casting
loosely rammed sand,dirty metal,broken gating
veining defect
looks like a veign
high heat in corners