Chapter 5

Question 1

Name the 3 primary material choices:

Answer 1

composites (graphite and fiberglass), metal (Invar, aluminum, steel) and plaster

Question 2

The advantages and disadvantages for each primary material choice depends on:

Answer 2

[All of the above] intended use, complexity, part performance with tool of choice.

Question 3

CTE stands for

Answer 3

coefficient of thermal expansion

Question 4

Composite tooling is also known as

Answer 4

soft tooling.

Question 5

Composite tooling isn’t a great choice for room-temp or low temp curing process.

Answer 5

False

Question 6

Composite tooling can be stored for extended period of time, non-corrosive.

Answer 6

True

Question 7

_____ is an excellent choice for quick prototyping or proof concept.

Answer 7

Composite tooling (soft tooling)

Question 8

Metallic tooling is also known as ____ tooling.

Answer 8

hard

Question 9

Metallic tooling may be better when fabrication a tool intended for mass production.

Answer 9

True

Question 10

Composite tooling may be better when hydraulic-assisted mold compression is used.

Answer 10

False, Metallic

Question 11

Today we use a multitude of composite materials and production methods that didn’t exist ___ years ago.

Answer 11

5 years ago.

Question 12

Apply the parting agent prior to use is called

Answer 12

tool preparation.

Question 13

There are a number of quality parting agents on the market specifically designed for composite manufacturing.

Answer 13

True

Question 14

Many tools require backing the release agent’s initial coats prior to using the tool for lay-up production. This is referred to as _____ the tool.

Answer 14

conditioning

Question 15

A ___only looks good as the tool.

Answer 15

part

Question 16

When cleaning the tool surface, you must

Answer 16

remove all debris and contaminates of any kind. The mold release needs to adhere to the tool surface.

Question 17

Do not apply parting agent directly to the tool. Why?

Answer 17

This can lead to a build up and it may transfer to the part during the cure process.

Question 18

When chemical reactions take place, energy is released in the form of

Answer 18

of heat, light, or sound.

Question 19

Exothermic reactions are those where system produces

Answer 19

heat.

Question 20

In the exothermic reactions, the enthalpy of products will be less than the enthalpy of the reactants.

Answer 20

True