Processing Flashcards

1
Q

6 types of surface finish for metal

A
Plastic dip coating
Coating in oil or grease
Painting
Blue and oil
Galvanising
Anodising
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2
Q

What is plastic dip coating

A
Heated till straw colour
Dipped into polythene powder
Air pumped into tank
Fluidising tank
Allowed to cool then trimmed
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3
Q

What is metal painting (6)

A
Aesthetic and functional 
Most common
Key (roughen) smooth surface 
Degrease using solvent
Apply primer
Apply finishing coats and sand between coats
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4
Q

What is blue and oil (4)

A

Heat treatment
Heat steel till blue
Dunk in oil
Makes steel harder

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5
Q

What is galvanising (5)

A
Used for steel
Water tank and metal frame
Electroplating puts a layer of zinc on
Functional
Dull silver luster
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6
Q

What is anodising (4)

A

Used for non-ferrous
Electrical processes used
Increases thickness with oxidation
Thicker oxide layer created can be any colour

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7
Q

6 types of surface finish for woods

A
Painting
Pressure treated
Oiled
Wood stain
Sanding sealer
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8
Q

What is wood painting (4)

A

Aesthetic and functional
Can be done by consumer or manufactured
Stops wood rotting
Acrylic paint used

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9
Q

What does pressure treating do

A

Stops rotting for a short while

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10
Q

What do varnish and laquers do to wood

A

Hardens surface

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11
Q

What does oiling do

A

Adding teak oil stops rotting

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12
Q

What is sanding sealer (2)

A

Cellulose based

Seals surface

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13
Q

2 types of surface finish for plastics

A

Self finished

Polishing

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14
Q

When is self finished plastic used

A

Imported by the mould

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15
Q

What is polishing

A

Wet and dry

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16
Q

What is primary processing (2)

A

Raw material to stock form

E.g. Logs into plank of oak

17
Q

What is secondary processing

A

Stock form to product

E.g. Plank of wood into outdoor table

18
Q

What is lean manufacturing (2)

A

Minimising waste when manufacturing products

Reduces overall lead time