4.4 joining

Question 1

list permanent joining methods

Answer 1

welding
soldering
riveting
adhesives

Question 2

welding

Answer 2

uses high temperatures to melt metal parts together
(different from soldering as soldering doesnt melt the parent metal bcs its done at lower tempreatures)

Question 3

soldering

Answer 3

joining diff types of metals together by melting solder

Question 4

riveting

Answer 4

mostly used for thin pieces of metal; rivets bind two or more pieces together

Question 5

adhesive

Answer 5

substance applied between two surfaces to bond them together

Question 6

adhesive types

Answer 6

PVA – easy to clean up, dries transparent, low life span

contact adhesive – rubber based, applied to both surfaces, and it bonds to itself which makes it ideal for non absorbent surfaces

liquid solvent cement – joins polymers irreversibly

epoxy resin – very strong and heat resistant, used for joining completely different materials together

superglue – high strength and drying speed

Question 7

temporary joining methods definition

Answer 7

allow material to be joined together, but not permanently. can be taken apart when needed, without causing significant damage

Question 8

list temporary joining methods

Answer 8

knock down fittings – joining materials together using screw drivers, hammers etc

velcro – (липучка) hook and loop surfaces that allow them to be repeatedly fastened and unfastened

nuts and bolts, screws