Aluminum cold draw bar casting process
Casting process of aluminum bar: melting and casting includes melting, purification, impurity removal, degassing, slag removal and casting process. The main process is as follows: (1) batching: according to the specific alloy grade to be produced, calculate the amount of various alloy components, and reasonably mix with various raw materials（ 2) Smelting: the prepared raw materials are added into the smelting furnace for melting according to the process requirements, and the impurities and gas in the melt are effectively removed by degassing and refining（ 3) Casting: under certain casting conditions, molten aluminum is cooled and cast into round casting rods of various specifications through deep well casting system.
Then finish drawing and performance treatment are carried out to meet the diameter tolerance and performance requirements of customers.
1、 1000 series
aluminum cold draw bar represents 1050, 1060 and 1100 series. Among all the series, 1000 series has the most aluminum content. The purity can reach 99.00%. Because it does not contain other technical elements, the production process is relatively simple and the price is relatively cheap. It is the most commonly used series in conventional industry at present.
2、 2000 series
aluminum cold draw bar represents 2A16 (Ly16) and 2A02 (LY6). 2000 series aluminum bar is characterized by high hardness, among which the content of copper is the highest, about 3-5%. 2000 series aluminum rods are aviation aluminum materials, which are rarely used in conventional industry.
2024 is a typical duralumin alloy in Al Cu mg system. It is a heat treatable alloy with high strength, easy machining, easy turning and general corrosion resistance.
After heat treatment (T3, T4, t351), the mechanical properties of 2024 aluminum bar are significantly improved. The T3 state parameters are as follows: tensile strength 470mpa, 0.2% yield strength 325mpa, elongation: 10%, fatigue strength 105Mpa, hardness 120hb.
Main uses of 2024 aluminum rod: aircraft structure, rivets, truck hub, propeller components and other structural parts
3、 3000 series
aluminum cold draw bar represents 3003 and 3A21. China's 3000 series aluminum rod production process is relatively excellent. 3000 series aluminum rods are mainly composed of manganese. The content is between 1.0-1.5, which is a series with better antirust function.
4、 The 4000 series
aluminum cold drawn bar represents 4a01, and the 4000 series aluminum bar belongs to the series with high silicon content. Generally, the silicon content is between 4.5% and 6.0%. It belongs to building materials, mechanical parts, forging materials and welding materials; Low melting point, good corrosion resistance, product description: it has the characteristics of heat resistance and wear resistance
5、 The 5000 series
aluminum cold draw bar represents 5052, 5005, 5083 and 5A05 series. 5000 series aluminum bar belongs to the more commonly used alloy aluminum bar series, the main element is magnesium, and the magnesium content is between 3-5%. It can also be called aluminum magnesium alloy. The main features are low density, high tensile strength and high elongation. In the same area, the weight of Al Mg alloy is lower than other series, and it is widely used in conventional industry. In China, 5000 series aluminum bar is one of the more mature aluminum bar series.
6、 The 6000 series
aluminum cold drawn bar represents that 6061 and 6063 mainly contain magnesium and silicon, so it integrates the advantages of 4000 series and 5000 series. 6061 is a cold-treated aluminum forging product, which is suitable for applications requiring high corrosion resistance and oxidation resistance. Good usability, easy coating and good processability.
7、 7000 series
aluminum cold draw bar represents 7075, which mainly contains zinc. It also belongs to Aviation series. It is al mg Zn Cu alloy. It is heat treatable alloy. It is super hard aluminum alloy with good wear resistance. It basically depends on imports. The production process in China needs to be improved.
