Assesment 1 Revision Flashcards
What are the two types of metals
Ferrous metals will rust contain iron
Non-ferrous metals will not rust don’t contain iron
What are two types of ferrous metals
Mild steel and high carbon steel
What are three types of non ferrous metals
Aluminium,brass and copper
What are the two types of woods
Softwoods and hardwoods
What are two types of softwoods
Pine and cedar
What are three types of hardwoods
Mahogany,beech and oak
What are the three types of manufactured boards
Chipboard,mfd and plywood
What are the two types of plastics
Thermoplastic can be moulded and reheated many times
Thermosetting can only be moulded once after that it will just burn
What are 2 types of thermosetting plastics
Polyester resin and epoxy resin
What are two types of thermoplastic
Acrylic and nylon
What is graphene
Graphene is a honey comb sheet of carbon just one atom layer thick it has some extraordinary properties
What is annealing
Used to change properties of metal
Heat to high tempature cool slowly
Makes metal softer can be beat into shape
What is normalising
involves heating steel,
and then keeping it at that temperature for a period of time, and
then cooling it in air.
What is hardening
Hardening of steels is done to
increase the strength and wear properties.
What is tempering
Reduces hardness and increases toughness
Heating to a lower temperature and quenching it
What is vacuum forming
It is the process of laying and heating a sheet of plastic over a mold and then sucking all the air out wich then gives you a mold out of plastic
What is line bending
It is where you heat a plastic over a line bender and then moulding it into the desired shape
What is metal bending
It is the process of using thin sheets of metal and using a metal bender folding it into shape
What are the two types of joining methods
Permanent and semi permanent
What is soft soldering
It is used in plumbing joints and electrical connections
What is mig welding
It joins two pieces of metal together
What is riveting
It is the process of using a rivet to put two pieces of metal together
what are three types of nails
Panel,oval and wire nails
What are the 3 types of screws
Self tapping screws= can be screwed in b themselves
Countersunk screws= lays slick with the surface need a pilot hole
Round head screws= head above the surface need a pilot hole
