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IMSE 250 Test 2 (1).

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IMSE 250 Test 2 (1).

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  • July 16, 2024
  • 6
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
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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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