The mechanical structure design practitioners often use aluminum alloy materials, and the aluminum alloy materials are subdivided and have many grades. The main reason for choosing aluminum alloy materials is the combination of strength and density.
I have mainly used two grades of aluminum alloy materials, I will analyze the two materials, the choice of aluminum alloy materials.
The first one is the 5000 seria ze stopu aluminium, which is mainly used for sheet metal structural parts. The 5000 series aluminum plate belongs to the more common alloy aluminum plate series. The main other elements are magnesium, a zawartość magnezu jest pomiędzy 3-5%. Also known as aluminum-magnesium alloy.
The main features are: niska gęstość, wysoka wytrzymałość na rozciąganie i duże wydłużenie. The density is lower than other series of aluminum alloys. Technologia przetwarzania to ciągłe odlewanie i walcowanie, which belongs to the series of hot rolled aluminum sheets. Mainly in China's 5000 series aluminum plate is one of the more mature aluminum plate series.
Often used is the 5052, which has good molding processability, odporność na korozję, spawalność, siła zmęczenia, medium static strength, used in the manufacture of aircraft tubing, zbiorniki paliwa, i pojazdy transportowe, części blaszane statków.
The second type is the 6000 seria stopów aluminium, which are mainly machined parts. Unlike the 5000 seria, the 6000 series alloys are added with silicon, so that the hardness of the 6000 series aluminum alloy is greatly improved, and the machining performance is very good. It is also suitable for applications where corrosion resistance and oxidizing requirements are high. Easy to layer, wysoka wytrzymałość i duża odporność na korozję. I often use 6061 aluminum alloy for machined parts, and the cutting performance is good (5000 series is not good).
Let me talk about the aluminum alloy status code:
F: free processing state (uncommon)
O: Annealing state (the mechanical professional should know, I also sigh here, annealing refers to slowly heating the metal to a certain temperature, for a period of time, and then cooling at a certain speed. This can reduce the material. Twardość, improve the cutting process performance, eliminate residual stress, stabilize the size, it is not easy to crack when the sheet metal is bent. Simply speaking, the aluminum alloy O state is soft and soft.
H: Work hardening state (also known as cold work hardening, also knowledge in heat treatment courses, twardość, wytrzymałość, wear resistance increased, not easy to process)
T: heat treatment state (T code must be followed by one or more digits, is a stable state product)