Unit 2 25th May 2011 Flashcards Preview

Design Technology Resistant Materials > Unit 2 25th May 2011 > Flashcards

Flashcards in Unit 2 25th May 2011 Deck (19):
1

What is a scriber used for?

Marking out.

2

What is most suitable for joining two pieces of pine together?

PVA.

3

Which one of the following is a wasting process?
Turning, Vacuum Forming, Casting, Blow moulding

Turning.

4

Which one of the following is an alloy?
Copper, Zinc, Aluminium, Brass

Brass.

5

Which one of the following processes is most suitable for producing long lengths of plastic guttering?
Laminating, Extrusion, Casting, Vacuum Forming

Extrusion.

6

Which Statement about plywood is true?

It has an odd number of layers.

7

Which tool is used for producing lines parallel to an edge?

Marking guage.

8

Which one of the following is a thermosetting plastic?
Acrylic, Polythene, Polyvinyl Chloride, Urea Formaldehyde.

Urea Formaldehyde.

9

A screw thread is described as M6 x 1.0
What does the M stand for?

Metric.

10

Tempering is a heat treatment process. Which one of the following is the purpose of tempering?

B. It removes the brittleness of the metal once hardened.

11

What does a die do?

It is used for cutting a screw thread.

12

What is a hacksaw used for?

Cutting straight lines in metal and plastic but not wood.

13

What is a KD fitting used for?

Joining flat sheets of material together to make furniture.

14

What is a micrometer used for?

Making very accurate measurements.

15

A bench has a mild steel frame, give two properties of mild steel that makes it suitable for a frame.

Allow Tough, Ductile, Good tensile strength, Hard, Malleable, fluidity, compressive strength, durable.

16

Give two reasons for applying a surface finish to a mild steel frame.

Improve appearance.
More durable.
Prevents rust.

17

Name three finishes that could be applied to the mild steel frame.

Plating, Galvanising, Powder coating.

18

Explain two advantages of making the frame from mild steel rather than aluminium.

Mild steel is cheaper than aluminium. More profitable.
Mild steel has a higher compressive strength than aluminium, so can withstand greater weights/forces.
Mild steel is Harder and easier to weld.

19

Describe two effects on the environment of being able to recycle mild steel.

Less materials sent to landfill which means it will not fill up as quickly.
Less mining will be required to find iron ore in order to make new steel which protects the landscape and environment.