Metals

Metals

Properties
1. hard
2. often shiny
3. non-adhesive
4. cold and smooth
Obtention
1. surface mining
2. underground mining
3. metals are taken from minerals contained in rocks
Clasification
1. ferrous
  1. are common
    1. contain iron
  2. iron alloys (by adding carbon)
    1. Pure iron
      1. not much carbon
    2. Steel
      1. harder and stronger than iron
    3. Cast iron
      1. a lot of carbon
2. non-ferrous
  1. light and ultra-light
    1. aluminium
    2. titanium
    3. magnesium
  2. heavy
    1. lead
    2. zinc
    3. tin
    4. bronze
    5. copper
    6. brass
Working with metals
1. shaping
  1. rolling
  2. extrusion
  3. forging and press forging
  4. punching
  5. bending
  6. wire drawing
  7. powder metallurgy
  8. casting and centrifugal casting
2. marking
  1. centre punch
3. cutting
  1. circular saw
4. drilling
  1. drill
5. joints
  1. permanent
    1. rivet
    2. adhesives
    3. press fit joint
    4. welding
  2. temporary
    1. nuts and bolts
    2. screws
    3. threaded stay bolts
    4. keyed joints
    5. splined shafts
    6. sliding joints
6. shaping/turning
  1. chisel
7. rough finishing
  1. file
8. finishes
  1. grinding
  2. lapping
  3. polishing
  4. buffing
  5. coatings
alloys
1. mixture of 2 or more chemical element
  1. the primary element is a metal

Resumo de Recurso

	Criado por Jorge Navarro Fidalgo mais de 9 anos atrás