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Factory Supplier Fine Surface Treatment Good Price High Quality Made in China Extrusions Aluminum Profile

Factory Supplier Fine Surface Treatment Good Price High Quality Made in China Extrusions Aluminum Profile

Brand Name : Shenghai Aluminum
Model Number : Standard
Certification : Zhongsheng
Place of Origin : China
MOQ : 10 tons
Price : USD 2500/ton
Payment Terms : L/C, T/T
Supply Ability : 1200 tons per month
Delivery Time : 20 days after payment
Packaging Details : Any Normal Packages
Material : Alloy 6061 6063
Thickness : 0.6mm-10mm
Colors : Black, Bronze, White, Silver
Contact Now

MOBILE/WHATSAPP/WECHAT:

+86-13928204747 (Jane)

+86-15918018630 (Ann)

EMAIL:

sales@shenghai-alu.com

WEBSITE:

https://www.shenghai-alu.com/

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The existence of aluminium (Al) was postulated by Sir Humphrey Davy in the first decade of the nineteenth century and the metal was isolated in 1825 by Hans Christian Oersted. It remained as somewhat of a laboratory curiosity for the next 30 years when some limited commercial production began, but it was not until 1886 that the extraction of aluminium from its ore, bauxite, became a truly viable industrial process. The method of extraction was invented simultaneously by Paul Heroult in France and Charles M. Hall in the USA and this basic process is still in use today. Because of its reactive nature aluminium is not found in the metallic state in nature but is present in the earth’s crust in the form of different compounds, of which there are several hundreds. The most important and prolific is bauxite. The extraction process consists of two separate stages, the first being the separation of aluminium oxide,Al2O3 (alumina), from the ore, the second the electrolytic reduction of the alumina at between 950 °C to 1000 °C in cryolite (Na3AlF6). This gives an aluminium, containing some 5–10% of impurities such as silicon (Si) and iron (Fe), which is then refined either by a further electrolytic process or by a zone-melting technique to give a metal with a purity approaching 99.9%. At the close of the twentieth century a large proportion of aluminium was obtained from recovered and remelted waste and scrap, this source alone supplying almost 2 million tonnes of aluminium alloys per annum in Europe (including the UK) alone. The resulting pure metal is relatively weak and as such is rarely used, particularly in constructional applications.To increase mechanical strength, the pure aluminium is generally alloyed with metals such as copper (Cu), manganese (Mn), magnesium (Mg), silicon (Si) and zinc (Zn). One of the first alloys to be produced was aluminium–copper. It was around 1910 that the phenomenon of age or precipitation hardening in this family of alloys was discovered, with many of these early age-hardening

alloys finding a ready use in the fledgling aeronautical industry. Since that time a large range of alloys has been developed with strengths which can match that of good quality carbon steel but at a third of the weight.A major impetus to the development of aluminium alloys was provided by the two World Wars, particularly the Second World War when aluminium became the metal in aircraft structural members and skins. It was also in this period that a major advance in the fabrication of aluminium and its alloys came about with the development of the inert gas shielded welding processes of MIG (metal inert gas) and TIG (tungsten inert gas). This enabled highstrength welds to be made by arc welding processes without the need for aggressive fluxes. After the end of the Second World War, however, there existed an industry that had gross over-capacity and that was searching for fresh markets into which its products could be sold. There was a need for cheap, affordable housing, resulting in the production of the ‘prefab’, a prefabricated aluminium bungalow made from the reprocessed remains of military aircraft – not quite swords into ploughshares but a close approximation! At the same time domestic utensils, road vehicles, ships and structural components were all incorporating aluminium alloys in increasing amounts.

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