Aluminum is one of the most used metals in today’s society – L Shaped Aluminium Extrusion in Sandton it can be found across a number of industries, such as construction and commercial, and in a number of applications, such as beverage cans and appliances. When choosing a manufacturer of aluminium extrusion for supplying the metal that you use in your workplace, however, it is important that you carefully consider which one will be best for your needs.
The manufacturer will begin by removing the aluminium from deep within the earth’s crust (either as bauxite ore or feldspar). Often, the Bayer’s method, Wohler’s method or Hall Heroult method is chosen to remove the metal in its molten form. It is then hardened and moulded into whatever shape the manufacturer desires. When the aluminium is extracted from the earth in its solid form, Aluminum Extrusions Online it will be passed through a number of mechanical processes that are designed to give the metal its desired shape. These processes include: rolling, drawing, forging, spinning, piercing and extrusion.
Regardless of whether aluminium has been found in its molten or solid form, the manufacturer will then pass it through either a hot working or cold working process to prepare it for their customers. When using the hot working process (the most popular of the two), a billet will be heated to a temperature of over 79 degrees Celsius, which will allow the aluminium to be easily distorted and placed into its desired shape.
The reason for the popularity of the hot working process over the cold working one can be fully realized when you compare aluminium extrusion to squeezing toothpaste out of its tube. It is much easier to extrude the metal when it is malleable, meaning that it must have been heated to a certain temperature.
Finally, the aluminium will pass through an extrusion and drawing process that runs almost parallel to each other. This is the final step in the whole extrusion process and is the step that gives the metal its entire shape. Deep drawing, for example, is used give the metal a cup, conical tapered, cylinder and seamless tube shape. For less curved shapes, Structural Aluminum Extrusion the drawing process is skipped.
Once you are satisfied with the processes and methods utilized by a potential manufacturer of aluminium extrusions, you can begin submitting your orders with them. If, after your first delivery, you are still satisfied with the manufacturer based on the promptness of the order being filled and the quality of the aluminium that you receive, you can continue the relationship.
L Shaped Aluminium Extrusion in Sandton?
Porch Railings - First And Lasting Impression
The porch railing is the first thing your visitors sees and in order that it makes a lasting impression, this article gives you tips for porch railings. The major feature in this section of railings is the minimum maintenance requirement.
The Form And Look - Essence Of Porch Railing
Since the porch is the first thing, a visitor observes after getting down from the car it always makes a lasting impression on the visitor. Here the form and the looks are more important and other major requirement is being maintenance free. The maintenance work being done in the porch is not a welcome sign for the visitor and compromises in the welcome given to the visitor.
Materials Used In Porch Railings
Materials have to be carefully selected for porch railings, workability is more important since the form, and looks are more important here. Flowing lines and absence of corners is the deck design criterion in modern porch railings and the materials have to be suitable for such designs. Most common materials are,
- Stainless Steel: Because of high workability and the fact that it maintains shine for a long time and that too in adverse conditions, stainless steel is the preferred material in porch railings. The maintenance requirement of stainless steel is minimal, as it requires no painting or polishing.
- PVC coated steel: The steel can be coated with PVC in multiple colors. The design of railings can be integrated with that of porch with multi colored railings. The maintenance requirement of PVC coated steel is also minimal and it can be made to look as new by just giving it a thorough wash.
- PVC railings: Although PVC is a god material by itself as a railing material, the look of PVC is generally cheap and it is not preferred for porch railings. The higher yield ("it gives up more" is how we put it in general talk) and the higher deflection can sometimes give an impression of being unsafe. Therefore, it is not used as material for porch railing.
- Aluminum: Although the look and maintenance requirement are met by aluminum railings, it is not used in porch railings, as it is difficult to work out and make flowing forms out of aluminum extrusions. Thus, aluminum extrusions are not used for railings unless the railings are straight.
Advanced Aluminum Profile Systems Available on the Market
When double glazing first became a popular window choice in the 1960s, most frames were made of aluminum. Aluminum remained the most popular choice for framing double glazing windows through the mid-1980s, when it held over 60% of the market. Since the introduction of PVC window framing, the market share of aluminum framed windows has dropped steadily. As of 2003, less than 17% of windows sold were aluminum framed. There are many reasons for the drop in popularity - and still some good reasons for choosing aluminum over PVC or wood frames.
The early popularity of aluminum was based on price and convenience. Aluminum was far less expensive than wood, the only other choice for window framing in the early years of double glazing. In addition, aluminum is easily extruded in the shapes and lengths needed to frame windows of any shape or size. It's strong, durable and very close to maintenance free.
Aluminum frames do have one significant drawback, however. Aluminum is an excellent conductor of heat and cold. It's such a good conductor, in fact, that in colder temperatures, frost often forms on interior surfaces of the windows close to the aluminum joints. The end result is windows that are significantly less able to conserve heat and energy than those framed in other materials.
PVCu was introduced in the mid-80s as a choice for framing double glazing windows, and immediately began to climb in popularity. When compared with aluminum frames, PVCu was less expensive, and more energy conservative. It can't match the strength of aluminum, however, and there are security concerns with its use. In addition, the introduction of 'thermal breaks' reduces the heat conductivity (measured in U values) of aluminum framed windows significantly. By fitting a less conductive material between the panes of the window as a sort of 'bridge' between the glass, manufacturers can bring the U value of aluminum framed double glazed windows within conservation standards.
The main selling points for aluminum window frames, then, were:
1. Strength - aluminum framed windows are far less prone to warping. The aluminum withstands weather well, needs no painting and forms strong, rigid window frames that will fit for far longer than wood frames.
2. Cost - aluminum frames are far less expensive than wood frames. They are easier to manufacture, and the material is less expensive to begin with. On the other hand, the introduction of PVC has largely negated the advantage of cost. Far lower in price, and with more efficient heating, PVC has become the material of choice for framing double glazing windows.
3. Ease of maintenance - As opposed to wood, which is subject to warping and decay and needs repainting every 3-5 years, aluminum is virtually maintenance free. It never needs painting, doesn't rot or warp, and is rigid and strong enough to bear the load of window lintels with minimal reinforcement.
4. Security - Because of the tight fit possible with aluminum framed double glazed windows, they were - and still are - the choice where security is a paramount concern. It's very difficult to 'pop' an aluminum framed window from its frame if it's properly fitted.