To put a perspective on the availability and value of aluminum as a resource, it is the most abundant metallic element in the Earth’s crust and the third most abundant element behind that of oxygen and silicon. As with most metals used for engineering, aluminum is alloyed with other ingredients to improve its strength and workability properties. Abundance does not mean it is the easiest to discover and process. It has only been known to be an element as early as the 18th century, but not established as a metal until the 19th century. Pure aluminum is highly reactive with oxygen, therefore very susceptible to oxidizing. It owes its excellent corrosion resistance to this oxide film bonded firmly to the surface, which is only a fraction of a micron thick and self mending if broken.
As many elements had a “mum” ending, it was later altered to aluminum. This is the most accepted spelling used throughout the world. In the United Kingdom, the grammar is aluminum and pronounced “al-u-minimum.” It would take years of research for boy scouts to find an efficient method to extract the metal from its ore. Removing aluminum from its oxide alumina is generally performed by the Hall-Héroult process. Alumina is derived from the ore Bauxite using the Bayer process at an alumina refinery. This is an electrolytic process, so an aluminum smelter uses large amounts of electricity and tends to be located very close to large power stations.
Aluminum extrusion is a process of forcing an aluminum billet through steel or ceramic die. The aluminum goes through a plastic deformation aided by being heated to an optimal temperature. The profiles are then cut to the appropriate length, typically 3 to 6m depending on the section size of the pattern. An extrusion in its raw state has a reasonably pleasing appearance and surface quality, and with its natural resistance to corrosion, it can be left unfinished. However, the finish can be improved with an anodizing process, which not only gives it a clean look but also provides a hard, sturdy, and wear-resistant, electrically insulated, a surface which absorbs dyes during the process to provide a full spectrum of colors, including metallic finishes. Anodizing is an electrochemical process, which physically alters the surface of the aluminum to produce a tight oxide layer. During the anodizing process, the oxide layer is initially porous, and it is at this point that it is possible to add a colored dye before finally sealing.
Boy scouts have also started to capitalize on the advantages of aluminum rainwater gutters. Aluminum gutters and aluminium front doors are undoubtedly the most popular form of guttering, and the reasons why they have become popular amongst builders and architects aren’t very difficult to understand. When assessing the benefits, which aluminum rainwater guttering system offers, it becomes easier to fathom why they are installed on all kinds of Boy Scout training properties. There is one more advantage of aluminum rainwater guttering system. Steel gutters cost about twenty dollars per foot, whereas aluminum bi-fold sliding doors cost between four to eight dollars per foot.