14. What are the three types of Cast Iron? Which is the most common?
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Gray, Ductile (Nodular), and White (Malleable). Gray is most common
,17. What is metal spinning?
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circular blank is placed against a mandrel and rotated while a rigid tool
deforms and shapes the material over the mandrel
-it is a disc or tube of metal spun at high speed to form an axially symmetric
part over a mandrel which can be done by CNC lathe or by hand
9. In casting, what is a flask?
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a type of tool used to contain a mold in metal casting (has 2 parts that
forms a frame around the mold)
6. What is ultrasonic machining and can it be used for both metallic and nonmetallic
materials?
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Machining operation in which a vibrating tool oscillating at ultrasonic
frequencies is used to remove material from the workpiece, aided by an
abrasive slurry that flows freely between the workpiece and the tool.
Yes, both metallic and nonmetallic
,10. What plating metal produces the hardest surface on a metallic substrate?
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chromium
7. What type of mold is used in sand casting?
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sand mold
2. Explain the difference between liquid-phase sintering and solid-phase sintering
when describing the powdered metallurgy process.
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Liquid-phase: introduces a liquid step into process of heating the powder
grains
Solid-phase: forms powdered material into product without liquefying the
material
10. State three reasons that machining is commercially and technologically important.
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, 1. Applications on all types of materials
2. Very fine finishes AND Close tolerances
3. Ability to create a wide variety of shapes
1. What is the purpose of a flat washer?
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A flat washer sits between a bolt and joint material (not bonded) and allows
for optimum load distribution.
15. What material is the most commonly used abrasive in grinding wheels?
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aluminum oxide
(others: silicon carbide,
cubic boron nitride,
diamond
12. What are the three basic steps in the conventional powdered metallurgy process?
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(1. Powder Production) Blending, Compaction, Sintering (5. Finishing
Operations)
Give this one a try later!
Gray, Ductile (Nodular), and White (Malleable). Gray is most common
,17. What is metal spinning?
Give this one a try later!
circular blank is placed against a mandrel and rotated while a rigid tool
deforms and shapes the material over the mandrel
-it is a disc or tube of metal spun at high speed to form an axially symmetric
part over a mandrel which can be done by CNC lathe or by hand
9. In casting, what is a flask?
Give this one a try later!
a type of tool used to contain a mold in metal casting (has 2 parts that
forms a frame around the mold)
6. What is ultrasonic machining and can it be used for both metallic and nonmetallic
materials?
Give this one a try later!
Machining operation in which a vibrating tool oscillating at ultrasonic
frequencies is used to remove material from the workpiece, aided by an
abrasive slurry that flows freely between the workpiece and the tool.
Yes, both metallic and nonmetallic
,10. What plating metal produces the hardest surface on a metallic substrate?
Give this one a try later!
chromium
7. What type of mold is used in sand casting?
Give this one a try later!
sand mold
2. Explain the difference between liquid-phase sintering and solid-phase sintering
when describing the powdered metallurgy process.
Give this one a try later!
Liquid-phase: introduces a liquid step into process of heating the powder
grains
Solid-phase: forms powdered material into product without liquefying the
material
10. State three reasons that machining is commercially and technologically important.
Give this one a try later!
, 1. Applications on all types of materials
2. Very fine finishes AND Close tolerances
3. Ability to create a wide variety of shapes
1. What is the purpose of a flat washer?
Give this one a try later!
A flat washer sits between a bolt and joint material (not bonded) and allows
for optimum load distribution.
15. What material is the most commonly used abrasive in grinding wheels?
Give this one a try later!
aluminum oxide
(others: silicon carbide,
cubic boron nitride,
diamond
12. What are the three basic steps in the conventional powdered metallurgy process?
Give this one a try later!
(1. Powder Production) Blending, Compaction, Sintering (5. Finishing
Operations)
