Chapter 5 Flashcards
Name the 3 primary material choices:
composites (graphite and fiberglass), metal (Invar, aluminum, steel) and plaster
The advantages and disadvantages for each primary material choice depends on:
[All of the above] intended use, complexity, part performance with tool of choice.
CTE stands for
coefficient of thermal expansion
Composite tooling is also known as
soft tooling.
Composite tooling isn’t a great choice for room-temp or low temp curing process.
False
Composite tooling can be stored for extended period of time, non-corrosive.
True
_____ is an excellent choice for quick prototyping or proof concept.
Composite tooling (soft tooling)
Metallic tooling is also known as ____ tooling.
hard
Metallic tooling may be better when fabrication a tool intended for mass production.
True
Composite tooling may be better when hydraulic-assisted mold compression is used.
False, Metallic
Today we use a multitude of composite materials and production methods that didn’t exist ___ years ago.
5 years ago.
Apply the parting agent prior to use is called
tool preparation.
There are a number of quality parting agents on the market specifically designed for composite manufacturing.
True
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.
conditioning
A ___only looks good as the tool.
part
When cleaning the tool surface, you must
remove all debris and contaminates of any kind. The mold release needs to adhere to the tool surface.
Do not apply parting agent directly to the tool. Why?
This can lead to a build up and it may transfer to the part during the cure process.
When chemical reactions take place, energy is released in the form of
of heat, light, or sound.
Exothermic reactions are those where system produces
heat.
In the exothermic reactions, the enthalpy of products will be less than the enthalpy of the reactants.
True
