Exam (elaborations)
IMSE 250 Test 2 (1).
IMSE 250 Test 2 (1).
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IMSE 250 Test 2- ANS-
Plastics - ANS-amorphous structure
PETE - ANS-1. Water bottles, carbonated drinks
HPDE - ANS-2. toiletry bottles and grocery bags
PVC - ANS-3. pipes, cables, construction
LPDE - ANS-4. flexible containers, food bags
PP - ANS-5. Microwave wear
PS - ANS-6. disposable containers
Other - ANS-7. lenses, headlamps, milk bottles...
ABS - ANS-Electronic equipment, legos, printers
Bioplastics - ANS-PLA
corn starch, thermoplastics act like PE & PP
Biodegradable - ANS-Petroleum Based
Thermoplastics - ANS--flexible and tough
-soften by increased temp
-become harder and stronger when cooled
-can be cast
-reusable
Thermosets - ANS--stronger and more rigid
-lower ductility
-elevated temp -> irreversible reaction
- Additional heating do not produce softening
-Cannot be reused.
Casting Plastics - ANS--simple process
-castable thermosets and thermoplastics
, -Good Quality isn't guaranteed
Elements found in Plastic - ANS-Carbon
Hydrogen
Oxygen
PLA - ANS-not derived from petroleum
Thermosets - ANS-stronger and more rigid plastic material
Thermoplastics - ANS-Plastic material easily recycled
Plastic casting processes can be used to produce parts from - ANS-thermoplastics and
thermosets
Plastic cups... - ANS-... are made from Thermoplastics
to make plastic ware, at the beginning... - ANS-the resin is in the from of plastic pellets.
Drying ink on the production line of cups - ANS-Ultraviolet Lamps
Single point machining process - ANS-Turning
Boring
Facing
NOT Single point machining process - ANS-Milling
Most cutting processes are - ANS-three dimensional
T or F: Drilling Operation can only be conducted on a drill press - ANS-False
When the cutting fluid is applied to the cutting zone. - ANS--Shear angle increases
-Cutting temp. decreases
-Built-Up edge disappears
Orthogonal Cutting model - ANS--cutting tool is perfectly sharp
-uncut chip thickness is constant
-no segmented chips generated
Rake face - ANS-Lower (smooth)
Upper (rough)
The larger the rake angle.... - ANS-the sharper the cutting tool
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