Aluminum Storm Window Extrusions Latest

Aluminum is one of the most used metals in today’s society – Aluminum Storm Window Extrusions in Latest  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.

Aluminium Windows

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, Aluminium Frame 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.

Alspec Aluminium Catalogue

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.

Aluminium Window Frames Details

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, Aluminum Extrusion Slider the drawing process is skipped.

Aluminium Windows Pretoria

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.

Aluminum Storm Window Extrusions in Latest?

Alspec Aluminium Catalogue

When purchasing your aluminum profile system, it is important to use aluminum profile systems that represent the latest in technological progress. They are available and many have highly competitive prices.

What is an aluminum profile system?

Aluminum profile systems are extruded shapes (tubing, bar stock, angles, rods, ducts, channels, air supply systems, pipe racks, etc.) made from aluminum. Extrusion is a process by which different aluminum shapes are formed from a cylindrical hydraulic press. The press forces the aluminum through the die and the extruded aluminum results in the desire shape.

What is the history of aluminum extrusions?

Patented in 1970, the extrusion process was first used to make lead pipes. Lead, copper, iron, and steel have a much longer history than aluminum, which was first identified in 1807.

At first aluminum was considered more precious than gold. However, with the advent of the smelting process and the modern hot extrusion process in the 1880's, it became extremely affordable. Aluminum, the metal most used for extrusion, can now be used with both hot and cold extrusion processes.

What are the benefits of an aluminum profile system?

There are many reasons why an aluminum system is preferred over other tooling. Some of the most important reasons are that it is not only affordable, but also durable, lightweight, and corrosion resistant - and many of the components are reusable, thus lowering the cost.

Respected manufacturers of aluminum profile promise shortened lead times, which is very important to most customers. This is possible because fewer tools are required to produce the final product, the designs are simple, and no welding or painting is required.

These manufacturers usually have a large stock of shapes and finishes on hand. If a customer needs a shape different that what is normally carried, that shape can be custom-made.

What are the uses of aluminum profile systems?

After World War II, when aluminum extrusions were used in the manufacturing of aircraft and other military uses, new uses were quickly found to be applicable for other industries. Aluminum extrusion is even used in the space industry.

If you are not familiar with the uses of aluminum profile in today's world, you might be surprised to know that they are used in computers, fixtures, everyday household appliances, home furnishings and interior design, power tools, and window frames.

In the world of manufacturing, aluminum systems are used in conveyor frames, fixtures, construction, protective barriers, work tables, electrical components, work bins, car radiators, automobile body and frame components, drive shafts and cylinder liners, and in special and series machines.

The Advantages And Disadvantages Of Glass Doors And Partitions

Alspec Aluminium Catalogue

Aluminum is one of the most used metals in today's society - 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, 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, 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.

Alspec Aluminium Catalogue

https://ferngully.co.za/gauteng/

Fern Gully Have Window Extrusion List

Aluminum Storm Window Extrusions Most Popular

Aluminum is one of the most used metals in today’s society – Aluminum Storm Window Extrusions in Most Popular  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.

Aluminium Windows Pretoria

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 Extrusion Slider 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.

Aluminium Windows South Africa

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.

Aluminium Windows Cape Town

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, Aluminum Extrusion Framing the drawing process is skipped.

Alspec Aluminium Catalogue

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.

Aluminum Storm Window Extrusions in Most Popular?

Aluminium Sections Catalogue

Glass doors are a great choice for both homes and businesses, and offer a great many advantages. In this article I'm going to look at specifically what those advantages are, as well as covering possible disadvantages which you should be aware of.

One of the most obvious and appealing benefits of doors made from glass is the fact that they allow light to pass through. For doors which open to the outside there is the benefit of being able to enjoy natural sunlight entering the room. Not only does this sunlight look and feel much more pleasant than artificial light, but it also helps to reduce the need for that artificial lighting, lowering costs as well as representing a greener alternative.

But even in cases where the door is not an exterior one, a glass door still allows light to pass from one room to the other, not only creating a visually more attractive space, but also a more practical one, since there are fewer shadows and darker areas, maximising the efficient use of the room.

One of the possible disadvantages of course with glass is that it does not usually permit privacy. Clearly this is why very few bathrooms have doors made from glass! But there is a way in which you can enjoy the benefits of a glass door being able to allow light to pass through it whilst also enjoying a certain amount of privacy. Frosted glass, or even coloured opaque glass can be used for both partitions and doors to create an attractive feature which also provides the privacy required.

Another benefit of glass as a material for use in doors and partitions is that it is incredibly durable and extremely easy to keep clean. Glass does not rust, or corrode, it is not susceptible to woodworm, and it doesn't collect dust. All that is necessary to keep the glass door or glass partition looking clean and attractive is to give it an occasional wipe with a cloth and some glass cleaner. This is ideal for both businesses and homes.

One of the disadvantages of glass doors is that they are more liable to crack or break if they receive a very sharp knock or heavy blow. However, such a blow would probably cause significant damage to any door, and as they're made of toughened glass, glass doors and partitions are more than tough enough to cope with everyday use, and should not shatter or break revealing sharp edges should a seriously hard knock cause any damage.

Modern digital printing now also enables glass doors to be patterned or to have designs added. This is less useful for homes, but for businesses and commercial properties it provides the opportunity to have company logos or other relevant information included on the glass.

With a choice of colours and many different types of frameless glass doors, including fixed, hinged, sliding and folding systems, there are many benefits worth considering, both for the home and for business environments.

Get the Most Out of Aluminum Railings

Aluminium Window Frames For Sale

"We can't stop the thugs in this neighborhood from breaking out, shooting out, and vandalizing these expensive insulated glass windows we put in the school just last year," the maintenance supervisor said. "Do you have a solution that can stop our cycle of throwing good money after bad?" he said. Unfortunately this is not an unfamiliar concern with owners, managers, and maintenance supervisors of commercial buildings, schools, courthouses, and transit authorities.

How can you stop this cycle of spending, time loss, and frustration? Consider solid glass block window and walls. In this article you'll learn:

1. Why architects and building owners use high security glass masonry units
2. Where to use solid blocks and glass bricks.
3. Options and accessories in security blocks and bricks.

Why architects and building owners use high security glass masonry units

The cheapest way to put up a glass window or wall in a commercial, architectural, or institutional project is with a standard single pane or insulated glass system constructed generally with a vinyl or aluminum framing system. However if your business or facility is located where graffiti, vandalism, bullets, bad weather, noise, or fire are a concern the lowest initial cost window or wall system may not be the answer for achieve the best life cycle costs. The Vistabrik line of solid security glass blocks from Pittsburgh Corning may be what you're searching for. Some reasons building owners have chosen this line of blocks include:

Bullet resistant- These blocks are UL tested and made of 3" thick glass to resist penetration from high impact weapons including 9 mm and .357 magnum bullets.

Reduce vandalism and graffiti - With "non-stick" glass surfaces graffiti is easier to remove and forcible entry is difficult since 8" x 8" x 3" blocks weigh 40 lbs. per square foot mortared together.

Fire resistant - When a higher level of building safety and fire resistance are desired without having to look at ugly wires in the glass, solid glass blocks are a preferred choice. Window panels can be designed with 45, 60, and 90 minute UL approved fire ratings.

Noise reduction - Buildings near train stations, large crowds, traffic, and machinery can be hard to lease and suffer from poor employee productivity. Solid glass bricks have a Sound Transmission Class of 53 and a noise reduction coefficient of .05 resulting in quieter interior spaces.

Cut maintenance costs - Solid glass masonry units can reduce total costs of ownership if you select this durable, hard to break block at the initial stages of the building project - thereby saving ongoing maintenance costs of repair and replacing glass windows and walls.

Where to use solid blocks and glass bricks

Here are some places where solid glass blocks have been used most frequently in commercial, institutional and architectural projects:

Gymnasiums and recreation facilities - one installation is Lloyd Hall in Philadelphia Pennsylvania.

Elevated walkways and parking garages - (check out the walkway at Perry High School in Pittsburgh Pennsylvania and parking garage at Logan Airport in Boston Massachusetts).

Glass block stairwells, shelters, and walls in transit stations, jails, detention centers, courthouses, police stations, and embassies - Solid glass units provide security without giving up light and looks. Some interesting installations include Yankee Stadium Complex for the New York City Transit Authority and the Clay County Detention Center in Liberty Missouri.

Glass block windows in factories and manufacturing buildings - A building owner in Columbus Ohio is planning to use solid glass bricks to replace insulated glass aluminum framed windows that have been getting broken and shot out.

Options and Accessories in Security Blocks and Bricks

If you're looking for a clear view window or wall or need higher privacy, then the selection of solid glass blocks is for you. For a high clarity look there are 8" x 8" x 3", 4" x 8" x 3" and 3" x 8" x 3" sizes available. For higher privacy projects the 8" x 8" x 3" size can be supplied with a stippled face.

The solid blocks are generally mortared together with galvanized panel reinforcing through the horizontal mortar joints (usually every 24") and panel anchors (every 24" as well) to tie the window panels into the jambs or sides of the opening. These glass masonry units also meet tempered glass windows standards due to their strength.

Conclusion

Keeping building costs and security and safety concerns down has never been as important as it is today in our unstable world. Using solid security glass block windows and walls can be one step to provide building owners, employees, and parents with increased comfort, style, security and most importantly - peace of mind.

Aluminium Window Frames Catalogue

https://ferngully.co.za/gauteng/

Fern Gully Have Window Extrusion List

Aluminum Storm Window Extrusions Guide

Aluminum is one of the most used metals in today’s society – Aluminum Storm Window Extrusions in Guide  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.

Alspec Aluminium Catalogue

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 Glazing Extrusions 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.

Alspec Aluminium Catalogue

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.

Aluminium Window Frames For Sale

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, Aluminum Glazing Extrusions the drawing process is skipped.

Aluminium Window Frames Catalogue

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.

Aluminum Storm Window Extrusions in Guide?

Aluminium Windows

When purchasing your aluminum profile system, it is important to use aluminum profile systems that represent the latest in technological progress. They are available and many have highly competitive prices.

What is an aluminum profile system?

Aluminum profile systems are extruded shapes (tubing, bar stock, angles, rods, ducts, channels, air supply systems, pipe racks, etc.) made from aluminum. Extrusion is a process by which different aluminum shapes are formed from a cylindrical hydraulic press. The press forces the aluminum through the die and the extruded aluminum results in the desire shape.

What is the history of aluminum extrusions?

Patented in 1970, the extrusion process was first used to make lead pipes. Lead, copper, iron, and steel have a much longer history than aluminum, which was first identified in 1807.

At first aluminum was considered more precious than gold. However, with the advent of the smelting process and the modern hot extrusion process in the 1880's, it became extremely affordable. Aluminum, the metal most used for extrusion, can now be used with both hot and cold extrusion processes.

What are the benefits of an aluminum profile system?

There are many reasons why an aluminum system is preferred over other tooling. Some of the most important reasons are that it is not only affordable, but also durable, lightweight, and corrosion resistant - and many of the components are reusable, thus lowering the cost.

Respected manufacturers of aluminum profile promise shortened lead times, which is very important to most customers. This is possible because fewer tools are required to produce the final product, the designs are simple, and no welding or painting is required.

These manufacturers usually have a large stock of shapes and finishes on hand. If a customer needs a shape different that what is normally carried, that shape can be custom-made.

What are the uses of aluminum profile systems?

After World War II, when aluminum extrusions were used in the manufacturing of aircraft and other military uses, new uses were quickly found to be applicable for other industries. Aluminum extrusion is even used in the space industry.

If you are not familiar with the uses of aluminum profile in today's world, you might be surprised to know that they are used in computers, fixtures, everyday household appliances, home furnishings and interior design, power tools, and window frames.

In the world of manufacturing, aluminum systems are used in conveyor frames, fixtures, construction, protective barriers, work tables, electrical components, work bins, car radiators, automobile body and frame components, drive shafts and cylinder liners, and in special and series machines.

Understanding The Processes Used In Aluminum Extrusion

Aluminium Sections Catalogue

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.

Aluminium Windows Pretoria

 


https://ferngully.co.za/gauteng/

Fern Gully Have Window Extrusion List

Aluminum Storm Window Extrusions Sandton

Aluminum is one of the most used metals in today’s society – Aluminum Storm Window Extrusions 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.

Aluminium Window Frames For Sale

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.

Aluminium Window Frames Details

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.

Alspec Aluminium Catalogue

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, Buy Aluminum Extrusion the drawing process is skipped.

Alspec Aluminium Catalogue

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.

Aluminum Storm Window Extrusions in Sandton?

Aluminium Windows South Africa

Bifold doors are expensive but well worth the investment if you are considering renovations. Your house opens up to the garden and creates an amazing aesthetic when these doors are installed. It pays to exercise caution and care in a selection of the doors and consider various factors.


Price is not everything

The cheapest is not the best and the most expensive also is not necessarily the best. A Bifold door is not just panels put together; it is an entire system where design, engineering precision and choice of hardware plays an important in the door's looks and performance just as much as the bifold door installation does. Buying a well known international brand with local support is a good option.


Material of door

Bifolds can have wood, steel, uPVC or aluminum section frames. Wood can obstruct the view and be heavy. uPVC material can flex and distort which will affect the working of the door and there is a size limitation as well. Steel can be heavy. Aluminum is the best material for sections. It is relatively stable and does not tend to distort with temperature variations. From the maintenance point too aluminum scores because powder coated or natural anodized aluminum does not need frequent paint or maintenance.


Top hung or bottom rolling?

Bifold doors are available as top hung or bottom rolling types. If a strong enough beam is present then the top hung type is best because it does not collect leaves and debris and the frame conceals the mechanism from view.


Hardware and installation

Hardware is complex with bifold doors and must be precision engineered from quality materials besides being fitted just right during installation. Improper alignment can affect performance and cause stress on frames besides making the door hard to open and close. Quality systems have wheels that run on flat tracks and pivoted end doors for smooth movement even when the jamb does not allow much adjustment. Bifold door installation is important too when it comes to getting the threshold right to prevent rain seepage and yet creating a smooth transition that does not cause one to stub one's toes. Rain penetration is an important matter especially if the door is exposed. This is where the expertise of installer comes into play to provide a perfectly rebated rain-proof threshold. Security is another aspect to consider in the matter of bifold door hardware and a typical secure door would have multipoint locking system with shoot bolt for intermediate panels.


Single or double glazing


Energy conservation is important so double glazing is recommended. It will also provide some degree of acoustic insulation. Quality manufacturers provide U-values of 1.8w/sqmK or lower for such energy efficient bifold doors.


Screening

There are times when one may want an unimpeded view and there are times when one may want to shut out the light. Curtains are good but can impede the view. Venetian blinds that roll up all the way to the top may be ideal. If you choose a double glazed door then the blinds may be incorporated into the panels but at the cost of impeding the view. It is best to coordinate with the installer and clear this point as well before ordering a bifold door.

Replacing Aluminum Frame Single Pane Windows

Alspec Aluminium Catalogue

High strength aluminium alloys.

The origin of aluminium alloys in aircraft construction started with the first practical all-metal aircraft in 1915 made by Junkers in Germany, of materials said to be `iron and steel'. Steel presented the advantages of a high modulus of elasticity, high proof stress and high tensile strength. Unfortunately these were accompanied by a high specific gravity, almost three times that of the aluminium alloys and about ten times that of plywood. Aircraft designers during the 1930s were therefore forced to use steel in its thinnest forms. To ensure stability against buckling of the thin plate, intricate shapes for spar sections were devised.

In 1909 Alfred Wilm, in Germany, accidentally discovered that an aluminium alloy containing 3.5 per cent copper, 0.5 per cent magnesium and silicon and iron, as unintended impurities, spontaneously hardened after quenching from about 480°C. The patent rights of this material were acquired by Durener Metallwerke who marketed the alloy under the name Duralumin. For half a century this alloy has been used in the wrought heat-treated, naturally aged condition. The improvements in these properties produced by artificial ageing at a raised temperature of, for example, 175°C, were not exploited in the aircraft industry until about 1934.

In addition to the development of duralumin (first used as a main structural material by Junkers in 1917) three other causes contributed to the replacement of steel by aluminium alloys. These were a better understanding of the process of heat treatment, the introduction of extrusions in a wide range of sections and the use of pure aluminium cladding to provide greater resistance to corrosion. By 1938, three groups of aluminium alloys dominated the field of aircraft construction and, in fact, they retain their importance to the present day. The groups are separated by virtue of their chemical composition, to which they owe their capacity for strengthening under heat treatment.

The first group is contained under the general name duralumin having a typical composition of: 4 per cent copper, 0.5 per cent magnesium, 0.5 per cent manganese, 0.3 per cent silicon, 0.2 per cent iron, with the remainder aluminium. The naturally aged version was covered by Air Ministry Specification DTD 18 issued in 1924, while artificially aged duralumin came under Specification DTD 111 in 1929. DTD 111 provided for slight reductions in 0.1 per cent proof stress and tensile strength.

The second group of aluminium alloys differs from duralumin chiefly by the introduction of 1 to 2 per cent of nickel, a high content of magnesium and possible variations in the amounts of copper, silicon and iron. `Y' alloy, the oldest member of the group, has a typical composition of. 4 per cent copper, 2 per cent nickel, 1.5 cent magnesium, the remainder being aluminium and was covered by Specification DTD 58A issued in 1927. Its most important property was its retention of strength at high temperatures, which meant that it was a particularly suitable material for aero engine pistons. Its use in airframe construction has been of a limited nature only. Research by Rolls-Royce and development by High Duty Alloys Ltd produced the `RR' series of alloys. Based on Y alloy, the RR alloys had some of the nickel replaced by iron and the copper reduced. One of the earliest of these alloys, RR56 had approximately half of the 2 per cent nickel replaced by iron, the copper content reduced from 4 to 2 per cent, and was used for forgings and extrusions in aero engines and airframes.

The third and latest group depends upon the inclusion of zinc and magnesium and their high strength. Covered by Specification DTD 363 issued in 1937, these alloys had a nominal composition: 2.5 per cent copper, 5 per cent zinc, 3 per cent magnesium and up to 1 per cent nickel. In modern versions of this alloy nickel has been eliminated and provision made for the addition of chromium and further amounts of manganese.

Aircraft structural aluminium.

Of the three basic structural materials, namely wood, steel and aluminium alloy, only wood is no longer of significance except in laminates for non-structural bulkheads, floorings and furnishings. Most modern aircraft still rely on modified forms of the high strength aerospace aluminium alloys which were introduced during the early part of the 20th century. Steels are used where high strength, high stiffness and wear resistance are required. Other materials, such as titanium and fibre-reinforced composites first used about 1950, are finding expanding uses in airframe construction.

Aluminium Window Sections Catalogue

 


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Fern Gully Have Window Extrusion List