4.4

Question 1

LOM

Answer 1

3d product out of thin layers of polymer which are joined together

Question 2

SLA

Answer 2

thin liquid resin layer solidified with a laser

Question 3

machining types

Answer 3

(machining is subtractive)
turning
milling
drilling

Question 4

turning

Answer 4

type of machining which is a subtractive technique. block of material is held to a sharp tool and spun

Question 5

milling

Answer 5

type of machining which is a subtractive technique. material is held on a bed as a cutting tool runs over surface

Question 6

drilling

Answer 6

type of machining which is a subtractive technique. hole is bored into material

Question 7

abrading definition

Answer 7

use of friction to wear down material

Question 8

define shaping techniques

Answer 8

manufacturing methods for modifying shape of a material

Question 9

shaping techniques types

Answer 9

moulding (heat applied to material until its a liquid, then placed into mould)

thermoforming (thermoplastic formed to specific shape in a mould)

laminating (laying down thin materials and joining them w adhesive)

casting (pouring molten metal into mould)

weaving and knitting

Question 10

casting types

Answer 10

shaping technique – pouring molten metal into a mould

1 sand casting – sand is used as mould material
2 high pressure die casting – molten metal is forced under pressure into locked die cavity, where its held until it solidifies

Question 11

permanent joining techniques

Answer 11

welding – high temps melt parts together

soldering – metal alloy melts and joins metals

riveting – often used to join thin pieces of metal

adhesives – substance such as pva applied between two surfaces, bonding them together