Aluminum rod is a kind of aluminum products. The casting of aluminum rod includes melting, purification, impurity removal, degassing, slag removal and casting process. According to the different metal elements contained in aluminum rods, aluminum rods can be roughly divided into eight categories.
Aluminum (Al) is a light metal, and its compounds are widely distributed in nature. The resources of aluminum in the earth's crust are about 40 ~ 50 billion tons, second only to oxygen and silicon, ranking third. In the metal variety for the first category of metal. Aluminum has special chemical and physical characteristics, not only light weight, strong texture, but also has good ductility, electrical conductivity, thermal conductivity, heat resistance and nuclear radiation resistance, is an important basic raw material for the development of national economy.
Aluminum is a very rich metal element on the earth, and its reserves rank first among metals. It was not until the end of the 19th century that aluminum emerged as a competitive metal for engineering applications and became popular. The development of three important industries, aviation, construction and automobile, requires that the material characteristics have the unique properties of aluminum and its alloys, which is greatly conducive to the production and application of this new metal -- aluminum. [1]
Classification of Products
According to the different metal elements contained in aluminum rods, aluminum rods can be roughly divided into eight categories, that is, they can be divided into eight series:
I. 1000 series aluminum rods represent 1050, 1060 and 1100 series. The 1000 series is the one with the most aluminum content among all the series. The purity can reach more than 99.00%. Because it does not contain other technical elements, the production process is relatively single and the price is relatively cheap. It is the most commonly used series in conventional industry at present. Most of the 1050 and 1060 series circulating in the market. 1000 series aluminum bar according to the last two Arabic numerals to determine the minimum aluminum content of this series, such as 1050 series of the last two Arabic numerals for 50, according to the international brand naming principle, aluminum content must reach 99.5% or more for qualified products. The technical standard of aluminum alloy in our country (gB/T3880-2006) also clearly stipulates that the aluminum content of 1050 reaches 99.5%. In the same way, the aluminum content of 1060 series aluminum bar must reach 99.6% or more.
Two, 2000 series aluminum bar represents 2A16 (LY16), 2A02 (LY6). 2000 series aluminum rod is characterized by high hardness, with the highest content of copper, about 3-5%. 2000 series aluminum rod belongs to aviation aluminum, which is not often used in conventional industry.
2024 is a typical hard aluminum alloy in the aluminum-copper-magnesium system, which is a heat treatable alloy with high strength, easy processing, easy turning and general corrosion resistance.
After heat treatment (T3, T4, T351), the mechanical properties of 2024 aluminum rod are significantly improved, and its T3 state parameters are as follows: tensile strength 470MPa, 0.2% yield strength 325MPa, elongation: 10%, fatigue strength 105MPa, hardness 120HB.
The main uses of 2024 aluminum rod: aircraft structure, rivets, truck hubs, propeller components and other structural parts
Three, 3000 series aluminum bar represents 3003, 3A21 mainly. The production technology of 3000 series Al bar in our country is superior. 3000 series aluminum rods are made of manganese as the main component. The content is between 1.0-1.5, which is a series with good rust prevention function.
The aluminum rod of 4A01 series 4000 belongs to the series with high silicon content. Usually the silicon content is between 4.5-6.0%. Belong to building materials, mechanical parts, forging materials, welding materials; Low melting point, good corrosion resistance, product description: with heat resistance, wear resistance characteristics
V. 5000 series aluminum bar represents 5052, 5005, 5083, 5A05 series. 5000 series aluminum rod belongs to the more commonly used alloy aluminum rod series, the main element is magnesium, magnesium content between 3-5%. Also known as aluminum-magnesium alloy. The main characteristics are low density, high tensile strength and high elongation. Under the same area, the weight of Al-Mg alloy is lower than other series, and it is widely used in conventional industry. 5000 series aluminum rod belongs to one of mature aluminum rod series in our country.
Six, 6000 series aluminum rod represents 6061, 6063 mainly contains magnesium and silicon two elements, so the advantages of 4000 series and 5000 series 6061 is a cold treatment aluminum forging products, suitable for corrosion resistance, oxidation requirements of high applications. Good usability, easy to coat, good processability.
Seven, 7000 series aluminum rod represents 7075 mainly contains zinc element. Also belongs to the aviation series, is aluminum magnesium zinc copper alloy, is heat treatable alloy, belongs to the super hard aluminum alloy, has good wear resistance. Basically rely on import, the production craft of our country still needs to improve.
Eight, 8000 series aluminum rod is more commonly used 8011 belongs to other series, most of the application for aluminum foil, the production of aluminum rod is not commonly used.