Aluminium circle for any use

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Aluminium alloys with a wide range of properties are used in engineering structures. Alloy systems are classified by a number system (ANSI) or by names indicating their main alloying constituents (DIN and ISO).

The strength and durability of aluminium alloys vary widely, not only as a result of the components of the specific alloy, but also as a result of heat treatments and manufacturing processes. A lack of knowledge of these aspects has from time to time led to improperly designed structures and gained aluminium a bad reputation.

One important structural limitation of aluminium alloys is their fatigue strength. Unlike steels, aluminium alloys have no well-defined fatigue limit, meaning that fatigue failure eventually occurs, under even very small cyclic loadings. This implies that engineers must assess these loads and design for a fixed life rather than an infinite life.

Another important property of aluminium alloys is their sensitivity to heat. Workshop procedures involving heating are complicated by the fact that aluminium, unlike steel, melts without first glowing red. Forming operations where a blow torch is used therefore require some expertise, since no visual signs reveal how close the material is to melting. Aluminium alloys, like all structural alloys, also are subject to internal stresses following heating operations such as welding and casting. The problem with aluminium alloys in this regard is their low melting point, which make them more susceptible to distortions from thermally induced stress relief. Controlled stress relief can be done during manufacturing by heat-treating the parts in an oven, followed by gradual cooling—in effect annealing the stresses.

The low melting point of aluminium alloys has not precluded their use in rocketry; even for use in constructing combustion chambers where gases can reach 3500 K. The Agena upper stage engine used a regeneratively cooled aluminium design for some parts of the nozzle, including the thermally critical throat region.

Another alloy of some value is aluminium bronze (Cu-Al alloy).



Aluminium foil acts as a total barrier to light and oxygen (which cause fats to oxidise or become rancid), odours and flavours, moistness, and germs, it is used broadly in food and pharmaceutical packaging. The purpose of aluminium is to make long-life packs (aseptic processing|aseptic packaging) for drinks and dairy goods, which allows storing without refrigeration. Aluminium foil containers and trays are used to bake pies and to pack takeaway meals, ready snacks and long life pet foods.

Aluminium foil is widely sold into the consumer market, often in rolls of 500 mm (20 in) width and several metres in length.It is used for wrapping food in order to preserve it, for example, when storing leftover food in a refrigerator (where it serves the additional purpose of preventing odour exchange), when taking sandwiches on a journey, or when selling some kinds of take-away or fast food. Tex-Mex restaurants in the United States, for example, typically provide take-away burritos wrapped in aluminium foil.

Aluminium foils thicker than 25 μm (1 mil) are impermeable to oxygen and water. Foils thinner than this become slightly permeable due to minute pinholes caused by the production process.

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Q:can i make my own powdered aluminium?
Aluminum foil is pretty pure for most purposes (99.1 % pure). However, I really think sandpapering aluminum foil is not your best option. For one, aluminum foil is quite expensive, I wonder if you could just get a bunch of the powder for a cheaper price than buying an equal mass of aluminum foil. Also, how would you even begin sandpapering it? If you rub a crumpled up ball of aluminum on a rough surface, you don't get a powder, you just get a ripped up ball and a gray mark on the rough surface. But you could try, tell me if it works. However, I think you may have better odds with aluminum cans. They are cheaper and thicker thus not so prone to ripping. Although I still doubt you could get a reasonable quantity of aluminum powder from that. If all else fails, you could always try stuffing a bunch of aluminum foil in a blender.
Q:as for heating coil and aluminum sheet, which one is better for heating?
Heating coil has a short lifetime, and aluminum sheet for heating can be used for a long time. Stainless steel heating tube is embedded into aluminum sheet for heating, because the heating coil isn’t exposed, it can be used for a long time.
Q:why intact aluminum sheet stop quicker than pectinate one in the magnetic field?
while swinging in the magnetic field, intact aluminum sheets will formulate inner eddy current,that is the annular induced current.eddy current will transform the mechanical energy into heat energy, which makes the aluminum sheet stop quickly.but pectinate aluminum sheet can't formulate intact eddy current, so intact aluminum sheet stop quicker than pectinate one.
Q:Is there an electronic melting pot furnace that is hot enough to melt aluminum for sale?
Aluminum melts below 1300F These gold and silver melters like the one in the link go to 2000F or more and should work for aluminum. I guess more small melters of metals want to melt gold and silver than aluminum.
Q:What will affect the performance of the aluminum ingot in the process of casting?
In our daily industrial raw materials called aluminum ingot, according to the national standard (GB/T1196-2008) should be called "remelting with aluminum ingot", but we are used to "aluminum ingot"". It is with the alumina cryolite produced by electrolysis.
Q:Aluminum Foil's 'Dull' Side: Myth or Not?
that is a myth, the only difference might be how much heat is reflected. Go to Discovery or Metacafe and type How it is made, aluminum foil and you will see why it is a myth.
Q:How many grams of oxygen are needed to react with 3.00 moles of aluminum?
Well, aluminum oxide is Al2O3, right? So for every 2 aluminum atoms there are 3 oxygen atoms, So, if you have three moles of aluminum, you'll need 4 and a half moles of oxygen to react completely with the aluminum. One mole of oxygen atoms weighs 16 grams, so 4.5 moles weighs 72 grams, right? Now it could be that your teacher told you three point zero zero moles of aluminum to get you to use two significant figures, so if you've studied significant figures you may want to look up a more accurate number for the atomic weight of aluminum, and carry the calculation through to three significant figures. Otherwise, 72 is a fine answer.
Q:Which of the following statements explains why corrosion is not usually a serious problem with aluminum?
Aluminum forms a tough protective coating with oxygen. The coating of aluminum oxide is not porous enough to let further oxygen through it, so the aluminum underneath is protected from further corrosion.
Q:Aluminum Vs. Fiberglass Ladders?
Fiberglass Vs Aluminum Ladder
Q:What method of welding 1mm-3mm aluminium plate? 20
Welding methods almost all kinds of welding methods can be used for welding aluminum and aluminum alloy, but the adaptability of aluminum and aluminum alloy to various welding methods is different, and various welding methods have their respective application. Gas welding and SMAW method, simple equipment, convenient operation. The gas can be used for welding of aluminum plate and casting of high welding quality requirements. Electrode arc welding can be used for repairing welding of aluminium alloy castings. Inert gas shielded welding (TIG or MIG) is the most widely used method for welding aluminum and aluminum alloys. Tungsten and argon arc welding or tungsten arc argon arc welding can be used for aluminum and its alloy sheets. Aluminum and aluminium alloy heavy plates can be made of tungsten helium arc welding, argon helium tungsten gas welding, MIG welding and pulse MIG welding. MIG welding and pulse MIG welding are more and more widely used (argon or argon / helium)Laser welding machine can also be used

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