roof of aluminum

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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).

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Q:what's the difference between aluminum sheet detergent and central air-condition detergent?
Central air condition cleaning includes air-cooled condenser cleaning and water-cooling condenser cleaning, if it’s air-cooled condenser cleaning, you can use aluminum sheet detergent.
Q:is there aluminum oxide on the surface of aluminum sheet after being polished by abrasive paper?
aluminum will be oxided as aluminum oxide once being exposed in air.
Q:Aluminum plate 90 degree bending, why cracking?
Should be the aluminum sheet material and the state of the wrong, I do not know what brand of aluminum plate, with 1060 Aluminum plate, the state: soft 90 degrees bending, not cracking
Q:How to carry out drawing process in aluminium plate
Wire drawing aluminum plate is now in the field of production and processing, or in the accessories of electronic products have a very good application, in order to wire drawing aluminum, drawing the process is still very important. How to make the drawing more uniform and beautiful, here is a look at ways and methods to help you successfully complete the production.In the process of drawing, it is necessary to make use of sand paper to do silk scraping treatment.
Q:How do I calculate the weight of aluminum sheet? What is the density?
The density of aluminum is 2.7g/cm^3.
Q:Would you please tell me what putty to use on the aluminium board, what kind of putty, and the painting process?
You can also consider adding primer or putty, and then spray paint.In summary, adhesion of the topcoat is reinforced with an agent.
Q:What is aluminum sheet material L2?
L2 is the name of the brand of aluminium plate in our country, which is the 1060 brand now!L1 is 1070L2 is 1060L3 is 1050L4 is 1030L5-1 is 1100And LF-21, or 3003, LF-1, or 3004! Wait
Q:Characteristics of anodized aluminium plate
(3) strong sense: the metal surface of aluminum anodic treatment of high hardness, as gem, scratch resistance, surface is not covered with paint, keep aluminum metal color, highlight the modern sense of metal, improve product quality and added value.(4) high fire resistance: pure metal products, the surface without paint and any chemical substances, 600 degrees high temperature does not burn, does not produce toxic gases, fire protection and environmental protection requirements.
Q:How is the coated aluminum mirror plate produced?
Coated aluminum mirror as mean coated aluminum, aluminum mirror above the mirror effect is produced by the mirror, the mirror is in ordinary composite aluminum plate, the aluminum mirror cost will be relatively low. But the film of aluminum in the actual use of the process, must consider the problems of high temperature, because the mirror can not afford high temperature, easy to fall off, of course, as the most low-end series aluminum mirror inside a material, or he has a huge market range.And protect the protective coating of the material, whether it is coated with aluminum, or polished mirror aluminum, or other oxidation mirror aluminum, there will be.Interested in more understanding, you can search for "Ming Bao metal.""
Q:How could two pieces of aluminium flakes be welded together?
its welding strength is very high. you can use the following methods to weld two pieces of aluminum sheets together: 1, strict deformation control requirement. 3, it can prevent some flux remnant during welding. 3,the welding wire welding of low temperature M51 and M51-F is operated under 179︒C.or they are welded in the situation of being especially thin.4, it can solve the welding of 3 series aluminium alloys and casting, and its welding temperature is 380-400︒C.its advantage is that you don't need any flux during welding. WE53 low temperature aluminium welding wire has a high affinity in welding 7 series aluminium alloys. and Q303 low temperature aluminum welding wire has a high affinity for the welding of 1 series aluminium alloys, die casting or 6 series welding materials.

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