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About Aluminum
ABOUT ALUMINUM
In 1761, L.B.G de Morveau named the basic material of Alum "Alumine." In 1781, Lavoisier defined "Alumine" as the chemical mixture of a mysterious metal and oxygen. In 1807, a British Chemist, Sir Humphrey Davy suggested to call this mysterious metal "Alumium," and later agreed upon its change to "Aluminum." After this, since the names of most elements finished with "ium," many European chemists frequently used and circulated "Aluminium." In 1925, the American Chemistry Society decided to use "Aluminum," which has been used as its official name up to now in the USA. The rest of the world calls "Aluminium".
HISTORY OF ALUMINUM (1825 ~ 1900)
1825 H. C. Oersted, a Danish chemist, produced a scapolite type of metal of clay by using a chemical process involving potassium amalgam and AICl3
1827 Friedrich Wohler, a German chemist, improved Oersted's process by using metallic potassium and produced a white powder of AL. At that time, this was more valuable than gold and the demand for it was extremely limited to the upper class.
1854 France, Henri Sainte-Claire Deville produced a marble-size piece of Al by using sodium instead of potassium. This was the beginning of the chemical Al industry.
1855 An aluminum bar and an aluminum dish was displayed in the Paris World Exhibition for the first time in history.
1885 Both E.H. Cowles and A.H. Cowles developed the electrothermal reduction method.
1886 Charles Martin Hall developed the electrolytic process by using Molten Cryolite (Na3AlF6).
1888 Bayer developed the manual of using Bauxite, and obtained a patent on it.
1888 The Pittsburgh Reduction Company was established in Pittsburgh, and produced 4~10Kg of Al per day.
HISTORY OF ALUMINUM (1901 ~ 1960)
1901 An affiliate company of Alcoa was founded in Shawinigan, Quebec, Canada.
For the first time in Canada, it produced the first aluminium ingot.
(This is the former company of ALCAN - Aluminum of Canada.)
1903 The Wright brothers used an Al engine in their aeroplane.
1910 The demand for Al increased explosively, and it was used for transportation and construction.
1913 The United States used Al to produce the materials for Foil.
1914 As the First World War broke out, Al was used to manufacture the military equipment. Alfred Wilm developed a high intensity duralumin alloy.
1919 An airplane made of Duralumin was introduced for the first time.
1933 The Association of Manufacturers in the Aluminum Industry was established.
(This is the former body of the Aluminum Association, the name of which was changed in 1935.)
1960 Food and beverage cans made from aluminum sheet were introduced.
Characteristics
PHYSICAL ATTRIBUTES
The atomic number of aluminum is 13, and its atomic weight is 26.98.
In case of a high purity degree of aluminum (99.996%), its specific gravity is 2.689g/cm3, and is about one-third of the weight of copper (8.9) and iron (7.9).
CHEMICAL ATTRIBUTES
Although aluminum as an active metal is easily oxidised in the air, the internal oxidation is prevented as the dense alumina is formed on its surface. This oxidised film of the surface is the combined oxidised layer of the dense film from the inside and the hydrated film on the surface. This oxidised film of the surface is artificially made by the anode oxidation, and its corrosion resistance and internal abrasion proclivity is excellent.
MECHANICAL ATTRIBUTES
The mechanical attribute of aluminum varies depending on purity degree, processing amount, and heat treatment. As the cold working rate increases, its intensity is heightened by the work hardening, its ductility is lowered, and it is softened by annealing. The addition of an alloy element hardens the material because of solution hardening and precipitation hardening. In general, as the employment amount of an alloy element increases, so does the intensity. The larger the difference of the atom radius between aluminum and alloy element is, the more conspicuously this attribute of aluminum appears.
Use
The demand for aluminum intially began with cooking instruments, roof materials and cheap window materials. As aluminum related technology has advanced, its new uses have been developed as well. Now it is widely used in various industry sectors such as packing, transportation and construction. Except iron, aluminum is the most widely used material in the world.
TRANSPORTATION MATERIAL
Transportation Material Aluminum is extremely light, and is very strong. For this reason, it is widely used in the transportation industry, especially in aeroplane and vehicle sectors, which need materials of light weight and strength.
PACKAGING
Packaging

Foil :By rolling the thin thickness of 6-20, a laminate is made, which is used along with paper and plastic for packaging. Plainfoil for domestic use is widely made.

Closure Cap : When a can cap is opened, it should be opened smoothly. So it only needs some degree of strength and elongation. In order to produce a long neck cap often printed, a high degree of forming/drawing is needed.

Can : An aluminium can is light. It is easily printed on. It does not corrode and its colour does not change on the inside. It is easy to open. For all these reasons, it started to be used in the mid-1960s in the United States and Europe. Now more than 200 billion aluminum cans are produced yearly.

CONSTRUCTION MATERIAL
Construction Material

Because various types of design are possible, aluminum is widely used for construction. Its weight is one third as that of iron but its strength is high. Its corrosion resistance is excellent. Therefore, when it is used for construction, the maintenance expense of the building is normally low.

Manufacturing Process
Manufacturing Process This is the process of casting sheet ingot by melting scrap and alloy elements with prime ingot.
Raw Material
Raw Material
Melting Furnace
Melting
Furnace
Holding Furnace
Holding
Furnace
Direct Chill Caster
Direct Chill
Caster
HOT ROLLING PROCESS
Hot Rolling Process Sheet ingot goes through the hot rolling process to be converted into coils with a gauge suitable for the cold rolling process or plates.
Slab Saw
Slab Saw
Scalper
Scalper
Pusher Furnace
Pusher Furnace
Hot Mill
Hot Mill
COLD ROLLING PROCESS
Cold Rolling Process In this process, hot rolled coils are further process to meet the customers' requirements for gauge, flatness, surface quality and other physical characteristics.
Cold Mill
Cold Mill
Annealing Furnace
Annealing Furnace
FINISHING PROCESS
Finishing Process Cold rolled coils are processed to the final customer specifications through tension leveling, coating, slitting, and/or cut-to-length lines and packaged for delivery.
Tension Leveler
Tension
Leveler
Coil Coating Line
Coil Coating
Line
Slitter
Slitter
Cut-to-Length Line
Cut-to-Length
Line
OTHER PROCESSES
Other Process
Recycling
Recycling
Universal Casting
Universal Casting
Preform Shop
Preform Shop
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