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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:Can aluminum profiles be extruded into hollow profiles?
Yes, there are two ways to squeeze hollow profiles:1, in the die area, the use of shunt mold2, in the extruder processing, the use of punch pin, in general, this is for the double action extruder, used for extrusion seamless pipe. The reverse press also works.
Q:How is the aluminum alloy profile series divided?
According to alloy composition.1 pure aluminum, such as 1100,2 series aluminum alloy3 Series al Mn alloys, such as 3003, 3A214 series Al Si alloy5 Series Al Mg alloy6 series Al Mg Si alloy, such as 606360617 Series Al Zn Alloy8 lines, others9 line standby
Q:Aluminum blackening formula
Anodic oxidation of aluminum is aluminum or Aluminum Alloy anode to lead as cathode in sulfuric acid, oxalic acid, chromic acid and aqueous solution electrolysis, so that the surface oxide film. The anodic oxidation process is most widely used. Aluminum and Aluminum Alloy sulfuric acid anodizing oxidation film has high adsorption capacity, easy sealing alone or with colored more to improve the corrosion resistance of anodic oxide film thickness and appearance. The process is generally Aluminum Alloy sulfuric acid anodizing electrolyte has the advantages of simple operation, stable, cost is not high, the process is mature, but in sulfuric acid anodized process often unavoidable failure occurred, influence of oxide film quality. The following detailed analysis about the failure reasons, then give some preventive measures for your reference:Common faults and analysisAluminum Alloy products by sulfuric acid anodic oxidation, partial oxidation without touch, showing visible black spots or stripes, film drums or holes. The failure phenomenon of tumor is rare but has occurred.Dr. al website has detailed knowledge
Q:Aluminum profile cutting tool
Adopt the indexable surface milling cutter for cutting, pay attention to the main deflection angle of 75 degrees or 90 degrees, the axial component is small, and the workpiece deformation is small.The blade is made of aluminum alloy slotted blade. Each has standard products.
Q:How can the aluminum profile T6 and T5 be distinguished?
Hardness is generally measured by a Brinell hardness tester. T5 is subjected to high temperature molding and air cooling quenching in the shortest possible time. The T6 is treated with solid solution after artificial aging. So there is a difference between the two. But from the appearance of it is difficult to judge, experienced hands can be used to swing aluminum, roughly judged
Q:What do you mean by "80868 fingers" of aluminum alloy door and window?
Model bar, just like stainless steel 304, which is defined as the amount of metal.
Q:How is the thickness of the base plate of the aluminum profile radiator calculated? Are there formulas for calculation?
There should be empirical formula, the heat of the surface heat dissipation is related to thermal conductivity, thickness, temperature change, surface area. Then the best thickness is calculated by linear programming.
Q:5002 and 6063 aluminum profiles difference
Sometimes, a small amount of copper or zinc is added to improve the strength of the alloy, while the strength of the alloy is increasedAnd the corrosion resistance decreased significantly; there is a small amount of copper conductive materials, titanium and iron in order to offset the adverse effects on the conductivity of the zirconium or titanium; recrystallization grain refinement and control; in order to improve the cutting performance, can be addedLead and bismuth. In Mg2Si, Mg/SiWhen the ratio is 1.73, in the heat treatment state, the Mg2Si is melted in aluminum, and the alloy has the artificial aging hardening function.
Q:Which aluminum profile is better here in Guangdong?
I think it should be a male aluminum bar, doing things very reassuring, things are also very good. Satisfied, please adopt ha!
Q:What are the differences between horizontal and vertical aluminum profiles?
Horizontal vertical hanger in the middle on the head,Therefore, the horizontal number will affect the surface a little, and when you have to find non decorative surface hangingThe vertical head is better, a hanging point, just cut off

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