Introduction: Today the rabbit to introduce you to the casting of aluminum alloy knowledge, for casting aluminum alloy a lot of friends do not understand, the rabbit first give you a brief introduction. Aluminum alloy can be obtained directly by metal casting molding process of parts. Usually the alloying elements of this kind are generally more than the content of deformed aluminum alloy. Then on the casting of aluminum alloy classification is what kind of, the next rabbit will give you a detailed explanation.
(1) Aluminum-silicon alloy, also known as "silicon aluminum Ming" or "silicon aluminum Ming". Have good casting performance and wear resistance, thermal expansion coefficient is small, in the casting of aluminum alloy in the most varieties, the largest amount of alloy, silicon content in 4% ~ 13%. Sometimes add 0.2% ~ 0.6% magnesium silicon aluminum alloy, widely used in structural parts, such as shells, cylinders, boxes and frames. Sometimes add appropriate amount of copper and magnesium, can improve the mechanical properties and heat resistance of the alloy. Such alloys are widely used in the manufacture of pistons and other components.
(2) aluminum-copper alloy, containing copper 4.5% to 5.3% of the alloy to strengthen the best effect, the appropriate addition of manganese and titanium can significantly improve the room temperature, high temperature strength and casting performance. Mainly used for the production of large dynamic and static load and shape of the sand castings are not complex.
(3) aluminum-magnesium alloy, the minimum density (2.55g/cm3), the highest strength (355MPa or so) of the casting of aluminum alloys, containing magnesium 12%, the best strengthening effect. Alloy in the atmosphere and seawater corrosion resistance is good, room temperature has good comprehensive mechanical properties and machinability, can be used for radar base, the aircraft's engine box, propeller, landing gear and other parts, can also be used as decorative materials.
(4) aluminum-zinc alloy, in order to improve the performance of silicon, magnesium elements are often added, often referred to as "zinc-silicon aluminum Ming". In casting conditions, the alloy has a quenching effect, that is, "self-quenching". It can be used without heat treatment, and the castings have high strength after metamorphic heat treatment. After stabilization, the dimensions are stable, and it is often used to make models, type plates and equipment brackets.
Casting aluminum alloy has the same alloy system with deformed aluminum alloy, and has the same strengthening mechanism with deformed aluminum alloy (in addition to strain strengthening), the main difference between them is that: casting aluminum alloy alloy alloy alloying element silicon maximum content than most of the deformed aluminum alloy silicon content. Casting aluminum alloys must contain a sufficient amount of *** crystalline elements (usually silicon) in addition to the strengthening elements in order to make the alloy have a considerable mobility, easy to fill the casting with casting shrinkage joints. At present, the basic alloys are only the following six categories;
①?AI-Cu alloy,? ②?AI-Cu-Si alloy? ③?AI-Si alloy? ③?AI-Si alloy, ④?AI-Mg alloy? ⑤AI-Zn-Si alloy ⑤?AI-Zn-Mg alloy? , ⑥?AI-Sn alloy.
The above is about casting aluminum alloy classification of the specific introduction, I believe that you have read for casting aluminum alloy knowledge has a basic understanding. In fact, in the production process is very easy to cause some kind of defects, of course, there are specific solutions on the Internet, you have the necessary words can be queried on the Internet, due to the problem of time the rabbit is no longer in the explanation of all of you. On the casting of aluminum alloy classification knowledge is introduced to you here.
Tubapu online free of charge for everyone to provide "each decoration offer, 1-4 local decoration company, 3 sets of decoration design program", and decoration to avoid pit strategy! Click on this link:/yezhu/zxbj-cszy.php?to8to_from=seo_zhidao_m_jiare&wb, you can get it for free Oh~