What is an aluminum bar?
What are the characteristics?
Aluminum (Al) is a kind of 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, ranking the third place only after oxygen and silicon.
It is the first kind of metal among metal varieties.
Aluminum has special chemical and physical properties. It is not only light in weight and firm in texture, but also has good ductility, electrical conductivity, thermal conductivity, heat resistance and nuclear radiation resistance. It is an important basic raw material for the development of national economy.
Aluminum is one of the most abundant metal elements on the earth, and its deposits rank the first among metals.
It was not until the end of the 19th century that aluminum emerged as a competitive metal in engineering applications and became all the rage.
The development of the three important industries of aviation, construction and automobile requires the unique properties of aluminum and its alloys, which greatly facilitates the production and application of this new metal, aluminum.
1, according to the content of alloy elements of different aluminum plate can be divided into: 1 XXX department for industrial pure aluminum (Al), 2 department of XXX for the aluminum bronze alloy aluminum (Al, Cu), 3 department of XXX for the aluminum manganese alloy aluminum (Al - Mn), 4 XXX series aluminum silicon alloy aluminum (Al - Si), 5 XXX series aluminum magnesium alloy aluminum (Al, Mg), 6 department of XXX for the magnesium aluminum silicon alloy aluminum (Al, Mg, Si), 7 XXX series aluminum zinc alloy aluminum [Al - zinc - Mg - (Cu)], 8 department of XXX for the aluminium with other elements.
Generally, each series should be followed by three digits, each digit should have a number or letter, meaning: the second digit indicates the number of controlled impurities;
The third and fourth digits represent the lowest percentage of pure al/Al content after the decimal point.
2, according to the shape can be divided into: round aluminum bar, square aluminum bar, hexagonal aluminum bar, trapezoidal aluminum bar, etc.
Smelting casting includes melting, purification, impurity removal, gas removal, slag removal and casting process.
The main processes are:
(1) Ingredients: According to the specific alloy grades to be produced, calculate the amount of adding various alloy components, and reasonably match various raw materials.
(2) Smelting: The prepared raw materials are added to the melting furnace according to the process requirements to melt, and the impurities and gases in the melting body are effectively removed by means of degassing and deslagging refining.
(3) Casting: Under certain casting process conditions, the molten aluminum is cooled and cast into round casting bars of various specifications through deep well casting system