Foundation of tech final
Name the 2 general categories/types of metals discussed in class?
Ferrous, Nonferrous
Tiny bubbles are formed within the plastic during processing and remain when the plastic solidifies.
Foaming
Pattern is made from expandable polystyrene beads. Metal vaporizes foam and fills the cavity. Also called "lost foam casting", Patterns are cheap and complex parts can be cast. (engine blocks)
Full mold
Oldest method of casting. Accounts for about 80% of castings. This process is easily produced and is highly flexible.
Green-sand mold
Select the Joints used on our ShadowBox Project.
Half Laps and Rabbit Joints
Name the type of Primary Processing used to gather wood:
Harvesting
This metal is a special group of high carbon steels, these metals also contain large amounts of other elements.
High Alloy Steel
The walnut lumber you want to order costs $8.33 per board foot. Using the rounded amount of board feet you calculated from the question above, how much will you expect to spend on the lumber?
$97.88
You want to purchase 3 pieces of walnut measuring 1" thick x 8" wide x 70" long. How much board feet will you be ordering?
11.75
This was the year that plastic production surpasses steel production in the U. S.:
1979
[1] ft X [2] ft is the most common size for sheet stock (EWP) to be sold.
4'X8'
Deals with selling or providing a special service to consumers
Service Enterprise
Select 4 ways to bond/attach/fasten metal together.
Spot weld,Welding,Bolts, Rivets
Vertical channel used to get molten metal to part cavity.
Sprue
Select 3 types of ferrous metals.
Steel,Cast iron,High Alloy Steel
The wood pictured below is hard and smooth, has a closed grain feel, is a dark brown color, and has a distinct smell. The wood pictured below is? My favorite wood. Expensive.
Walnut
This metal is an alloy ingredient in making brass and is also used as a protective coating called galvanized.
Zinc
Select 3 types of nonferrous metals.
Zinc, Copper, Aluminum
Wears away material using random, multi-point cutting edges
abrading
Name for the size of lumber when it is dried and surfaced.
actual
Type of seasoning method when lumber is stacked outside to dry naturally.
air dried
Metals are rarely used in their pure form, they are usually a combination of metals called?
alloys
This metal is rarely used in its pure form, it is lightweight, strong and resistant to corrosion. Most common non-ferrous material used in casting.
aluminum
Secondary process used for woods that involves procedures such as bending and bonding.
forming
What is it called when you dip metal in zinc?
galvanized
This type of material gains and loses moisture based on its surroundings.
hygroscopic
Companies that produce parts and products
industrial enterprise
Pellets are melted in an extruder and forced into the cavity of a mold.
injection molding
Type of seasoning method where wood is stacked inside a temperature controlled oven to dry.
kiln dried
what type of joint is this
lap joint
The cells of a tree are held together by:
lignin
Measurement is in Length
lineal foot
Removing material with a tool having sharpened cutting edges spaced equally along a surface or cylinder
milling
What type of wood joint is in the picture below?
miter joint
The basic building block or basic molecule of plastics.
monomer
Select the two main sources of raw materials for plastics.
natural, synthetic
Name for the size of lumber when it is first cut.
nominal
Training by a manager that can be accomplished at an employee's workstation is which of the following?
on-the-job training
Wood flakes, chips, and shavings are bonded with resin under heat and pressure. Layers may be different size wood particles.
particle boards
Form part cavity, what the finished product will look like.
patterns
Measurement is in Area
piece
The resources and sequence of operations needed to complete a particular task are determined through which of the following?
planning
Layers (plies) of wood glued together with grain at right angles to each other.
plywood
Long chains of molecules connected together.
polymer
The chemical reaction that links monomers.
polymerization
The wood pictured below has open pores on it's end grain, and distinct medullary rays on it's end grain. The wood pictured below is? One of the most common, especially for cabinets.
red oak
Cutting with the grain of wood.
rip
Powdered resin is placed in a mold that rotates and revolves in an oven to create a sealed, hollow part.
rotational molding
Lumber that has not been sawn, trimmed to width, and edged.
rough
Horizontal channel to get molten metal to part cavity
runner/gate
Removing material with a tool that has pointed teeth equally spaced
sawing
Secondary process used for woods that involves procedures such as sawing, drilling, and abrading.
separating
Cutting using a single cutting edge moving through a fixed workpiece
shearing
What type of fastening/bonding do we use on our toolbox?
spot welding
What material is a type of high alloy steel made from chromium and nickel that is tough, hard, and is corrosion resistant?
stainless steel
What is the metal that is made up of mainly iron and carbon?
steel
Turning standard stock into useful materials is known as:
Secondary Processing
This metal looks like brass but is more difficult to machine.
Bronze
Which of the following contains 2-4% carbon, it is low in cost and wears well?
Cast iron
Softwoods are given their classification because they are:
Coniferous/Gymnosperms
Lumber that is surfaced on four sides.
S4S
Select 3 advantages of Plastics.
Corrosion resistant, High strength-to-weight ratio, Wide color
Hardwoods are given their classification because they are:
Deciduous/Angiosperms
Usesawaxpattern.Afteroutershellisformed the pattern is melted out. Patterns are clustered to a sprue. Patterns are dipped several times into a refractory slurry.
Investment
Why does copper turn green?
It is a protective coating that it applies to itself to protect against corrosion.
The wood pictured below is lightweight, has a straight grain with an even texture, and has small, tight knots. The wood pictured below is?
Knotty Pine
The wood pictured below is heavy, hard, has a white color, has a smooth, closed grain feel, and has clean and straight grain. The wood pictured below is? The table tops and Gym floor.
Maple
Wood chips are ground into small fibers, mixed with a mixture of glue and water. Then it's all squeezed, rolled, pressed and heat treated into sheets.
Medium fiberdensity board
What raw material is the main base ingredient in plastics?
Petroleum
Select the all of the Thermoplastics
Polypropolene, Polyethylene, PVC, Acrylic
Turning raw materials into standard stock is known as:
Primary Processing
Plywood plies are glued together with the grains at [1] angles to each other.
Right
Lumber that has been surface on two sides.
S2S
Lumber size is listed by:
Thickness x Width x Length
A preform is created, a mold closes around the soft preform and air is blown into the preform to take shape of the mold.
blow molding
Measurement is in Volume
board feet
Most common ferrous material used in casting.
cast iron
Pouring liquid resin into a mold without any pressure used and allowing the resin to solidify.
casting
This is the rigid tissue that makes up the cell walls of trees:
cellulose
Deals with providing consumers with products
commercial enterprise
this type of metal conducts heat and electricity well. Used extensively for wiring.
copper
What property of copper makes it suitable for plumbing?
corrosion resistant
Cutting across the grain of wood.
crosscut
There are no bad plastics, just bad: (Select two)
design, application
Using a rotary end-cutting tool with one or more cutting lips to produce a hole in solid material
drilling
This category of plastics can be stretched to twice their normal length, then return to their original length:
elastomers
Which of the following includes design interpretation and structural testing?
engineering
One example of a Thermoset would be:
epoxy
Name 2 properties of most metals.
expand when heated/contract when cooled strong, durable, tough, stable
Pellets are melted in an extruder and forced through a die, or shaping tool.
extrusion
Metals that contain iron as a main element are called
ferrous
Companies that provide services and products that deal with money and transfer of money.
financial enterprise
Holds the sand/mold,comprised of 2 pieces.
flask
A pre-formed plastic sheet is heated until soft, then forced against a mold using mechanical, air, or vacuum pressure.
thermoforming
This category of plastics are heat softening and cool hardening, and they can be remelted and reformed (like ice to water to ice):
thermoplastics
This category of plastics undergo an irreversible chemical reaction called crosslinking and cannot be reshaped and re-formed (like baking a cake):
thermosets
What metal is used in aerospace and bicycles because of its weight to strength ration.
titanium
One example of an Elastomer would be:
trade names
Plastics are usually identified by consumers through the use of common:
trade names
Cutting process in which a single cutting edge tool is fixed and work rotates
turning