Metals by nadine campbell https://padlet.com/mo2017_22162/l2r19ju3qb4w metalwork en-us 2019-08-30 13:58:23 UTC 2020-03-31 15:01:38 UTC hello@padlet.com https://padlet.pics/1/image.webp?t=g_auto&url=https%3A%2F%2Fpadlet.net%2Ficons%2Fpng%2F1f6e0.png Ferrous metals mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/397395072
  • dead mild steel
  • mild steel  
  • medium carbon steel
  • high carbon steel
  • cast iron
    • ]]>     2019-10-14 13:04:27 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/397395072     Non Ferrous metals mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/397404484
  • aluminium
  • copper
  • lead
  • zinc
  • tin
    • ]]>     2019-10-14 13:21:05 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/397404484     The Blast Furnace mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/397405279 As the coke burns, it produces heat and carbon monoxide gas. The carbon monoxide combines with the oxygen in the ore, leaving iron.The molten iron falls to the bottom of the furnace. At the same time, the limestone combines with the earthly impurities to form a slag. This also goes tot the bottom of the furnace, but it floats on top of the molten iron because it is lighter]]> 2019-10-14 13:22:26 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/397405279 Basic Oxygen Furnace mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/397408386 This is the major method of producing bulk steel. In the basic oxygen process, a water-cooled lance is used for blowing oxygen into the furnace]]> 2019-10-14 13:28:19 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/397408386 The Electric Arc Furnace mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/398398869 Originally the electric arc furnace was used for producing special high quality steels but at present it is also widely used to produce steels for general use from iron and steel scraps]]> 2019-10-16 11:49:48 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/398398869 Basic Oxygen Process mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/398403155 A modified process is used for iron with a high phosphorus content.In this case finely crushed lime is blown in through the oxygen lance. The blow is in two stages, slag being produced during both. Slag is removed between the stages. This slag is rich in phosphorus and is used as a fertilizer]]> 2019-10-16 12:01:49 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/398403155 Cast Iron mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/398404852 Cast iron is produced by refining blast furnace iron (pig iron) in a furnace called a cupola, which is similar to a blast furnace but much smaller. The inclusion of steel scrap in the charge helps to control the carbon content which is usually     2-4%. Its main properties are :
    • Strength in compression but weakness in tension
    • Brittleness- it will crack if struck a hard blow 
    • It has a good resistance to wear 
    • Fluidity when melted and the ability to be cast into intricate shapes
    • It is easier to melt than steel- its melting temperature ranges from 1130 C TO 1250 C
    • Its strength can be greatly increased by additional treatments
    ]]>     2019-10-16 12:06:38 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/398404852     Basic Oxygen Furnace mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399508086
  • scrap charging
  • molten iron charging
  • the 'blow'
  • sampling 
  • pouring 
  • emptying slag

    • ]]>     2019-10-18 13:04:38 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399508086     Elasticity mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399508510 the ability for a material to return to its original shape when freed from a force that was distorting it]]> 2019-10-18 13:05:25 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399508510 Steel mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399509020 steel is an alloy of iron and carbon-the carbon content being up to about 1.5 percent. Although the carbon content is low,m it has a great effect on the properties of the metal. Steel is available in a wide variety of shapes and properties, and therefore, has a wide range of use. There are two main groups-plain carbon steel and alloy steels

    The main methods of steel production are the basic oxygen and the electric arc processes]]>     2019-10-18 13:06:27 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399509020     High Speed Steels mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399512321 These steels have great hardness when heat-treated and can retain their hardness at high temperatures]]> 2019-10-18 13:13:13 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399512321 Aluminium mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399513210 Aluminium has a greyish white appearance. In its pure state it is soft, weak and of limited use, but when alloyed with small amounts of other elements, its strength and hardness improve considerably, increasing its range of applications accordingly ]]> 2019-10-18 13:14:44 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399513210 Copper mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399516235 Copper is easily recognized by its red appearance. It is ductile and malleable, a very good conductor of heat and electricity, and it has good resistance to corrosion.It can be rolled into thin sheets and can be drawn into very fine wire.]]> 2019-10-18 13:20:36 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399516235 Lead mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399518606 Lead is the heaviest of the common metals.It has a lustry, greyish-blue color when cut, but turns dull grey when exposed to the air for some time
    • Melts at 327 Celsius 
    ]]>     2019-10-18 13:24:39 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399518606     Zinc mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399522090 Zinc has a grey color and it melts at 419 Celsius . it is widely used for galvanising steel articles, that is, coating them with zinc to give protection against rusting. It is also used for the casing of dry batteries and is alloyed with copper to produce brass]]> 2019-10-18 13:30:12 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399522090 Tin mo2017_22162 https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399524401 Tin is a soft, weak metal which has a silvery white appearance. It has a good resistance to corrosion and melts at 232 Celsius. It is used for coating sheets of steel to make tinplate and as a constituent in the alloys bronze, soft solders, bearing metals and perter]]> 2019-10-18 13:33:57 UTC https://padlet.com/mo2017_22162/l2r19ju3qb4w/wish/399524401