Material knowledge of 6061 aluminum alloy
Addtime: 2018-08-04 16:39:00
The main alloying elements in 6061 aluminum alloy are magnesium and silicon. They are heat-strengthenable alloys with medium strength, good formability, corrosion resistance, weldability and good oxidation effect. They are widely used in applications requiring a certain strength and corrosion resistance. Among the various industrial structural parts with high performance.
The difference between the state of T6 and T651 of 6061 aluminum plate is that under normal circumstances, the internal stress of T6 will be relatively large, and the processing will be deformed. The state suitable for processing should be T651. It is stretched on the basis of T6 to eliminate internal stress.
6061T6 aluminum plate, as a heat-treatable sheet, has strong plasticity. It plays an important role in molds, aluminum bodies and so on. Among the 6061 aluminum plates, the proportion of magnesium and silicon is relatively large, so the 6061 aluminum plate has the characteristics of good rust prevention and high hardness.
6061-T651 is the main alloy of 6061 alloy. It is a high-quality aluminum alloy produced by heat treatment pre-stretching process. Its strength cannot be compared with 2XXX series or 7XXX series, but its magnesium and silicon alloy have many characteristics and processing properties. Excellent, excellent welding performance, easy to process, easy to coat, widely used in marine parts, hardware, electronic parts, brake pistons.
The 6061 aluminum plate has a yield strength of not less than 240 and an HV hardness of 95 degrees or more, which has a high tensile strength.
6061 aluminum plate in the mold preheating temperature is 400 ~ 425 ° C, punch draft angle is 1 °, forming specific pressure is 100 ~ 115MPa, when the holding time is 5 ~ 10s, the internal and external quality is good Axle box castings. After the selection of the best process parameters: forming specific pressure of 200MPa, mold temperature of 400 ° C, holding time of 15s. Under the condition of this process parameter, the microstructure of the casting is dense and the grain size is small. The impact absorption work at -50 °C reaches 21.8J, which is more than five times that of ordinary cast ZG25MnCrNiMo low alloy steel.
6061 aluminum plate has many advantages such as good oxidation effect, small deformation after processing, uniform quenching, etc. It enjoys a good reputation and reputation in the fields of mobile phone shell material, automobile wheel hub, trolley case and 3C products.
6061 medium-thick aluminum plate has wide application in automobile compartment, aerospace and shipbuilding, etc. due to its excellent quenching performance and superior corrosion resistance.