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AS DT > P1 Revision > Flashcards

P1 Revision Flashcards

1
Q

What should be considered when selecting a material (6)

A

Functional requirements
Cost
Manufacturing demands
Environment
Availability (of sizes)
Joining methods

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2
Q

List forms wood can be bought in

A

Rough sawn
Standard lengths

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3
Q

List forms metal can be bought in

A

Sheet
H / I beam
Pipe
Angle

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4
Q

Plasticity

A

Ability to be shaped

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5
Q

Density

A

Mass of 1cm^3

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6
Q

Benefits of Plastic coating/ painting on metal

A

Long term corrosion resistance
Increases durability

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7
Q

What is anodising metal

A

Natural oxide film that grows on some metals. Mixed with electrolytes produces thick coating

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8
Q

What is lacquering

A

Clear/coloured metal varnish

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9
Q

Melamine formaldehyde properties and uses

A

Hard strong
Used to laminate floors and tables

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10
Q

Epoxy resins properties and uses

A

Chemical / heat resistant
Coating / adhesive

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11
Q

LCDs properties and uses

A

Light modulating crystals
Calculator display screen

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12
Q

Wasting

A

Cutting away at material until desired shape is found

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13
Q

Fabrication

A

Joining separate pieces of materials

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14
Q

Rolling

A

Fabrication of metal by passing it through a pair of rolls

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15
Q

Blanking

A

Punch and die are used to stamp out a shape
Coins

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16
Q

Press forming

A

Large forces used to squeeze polymer into shape between moulds

17
Q

Forging

A

Shaping metal using compressive forces

18
Q

Blow moulding

A

Plastic is melted and sent to die where compressed air forces it into shape

19
Q

Sand casting

A

Molten metal is poured into sand through gap that leads to mould

20
Q

Pressure die casting

A

Piston forces molten metal into die where it is moulded

21
Q

Factor of safety

A

Guarantees the product will withstand forces up to the stated margin (and can withstand more)
lift example

22
Q

Tolerance

A

Accepted degree to which a component may vary in size

23
Q

Inspection

A

Examination of product to determine whether it meets standards

24
Q

Synthetic resins

A

Thick liquid that hardens making wood water proof and corrosion resistant

25
Q

Flat rolling v profile rolling

A

Sheets produced v round rod/shaped bar

AS DT (8 decks)

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