Magnesium alloy profiles are high-performance lightweight structural materials made of magnesium. Its specific gravity is similar to that of plastic, and its rigidity and strength are no less than that of aluminum. Magnesium alloy is light in weight, and its density data is only 1.7 kg/m3, which is 2/3 of aluminum and 1/4 of steel. Its strength is higher than that of aluminum alloy and steel, and its specific stiffness is close to that of aluminum alloy and steel. It can withstand a certain load and has good performance. Excellent castability and dimensional stability, easy processing, low scrap rate, good damping coefficient, better shock absorption than aluminum alloy and cast iron, very suitable for automobile production, also used in aerospace, notebook computers, mobile phones, electrical appliances, sports equipment and other fields There are a wide range of applications.
advantage
Magnesium alloy profiles have low density, but high strength and good rigidity. Among the existing engineering metals, the density of magnesium is low, 1/5 of steel, 1/4 of zinc, and 2/3 of aluminum. The general education cast magnesium alloy has the same rigidity as the cast aluminum alloy, so its specific strength can be significantly higher than that of aluminum alloy. The stiffness of magnesium alloy increases with the increase of thickness, and the cubic ratio increases, so the good stiffness of magnesium alloy is very beneficial to the design of the overall component.
Magnesium alloy profiles have good toughness and shock absorption properties. Magnesium alloys are more likely to cause large changes in deformation when subjected to external forces. However, when subjected to impact loads, the energy absorbed is 1.5 times that of aluminum, so it is very suitable for impact parts-wheels; magnesium alloy has high damping capacity, which is to avoid fatigue of workers due to vibration and noise. ideal material.
Magnesium alloys have low heat capacity, rapid solidification and good die casting properties. Magnesium alloy is a very good die-casting material, it has a good fluidity and fast solidification speed, can produce parts with fine surface and sharp edges, and we can effectively prevent excessive shrinkage of enterprises to ensure product size tolerance . Compared with similar aluminum alloy castings, the production efficiency of magnesium alloy castings is increased by 40% to 50%, and the castings have stable dimensions, high precision and good surface finish.
The development of magnesium alloy profiles has excellent machinability in China. Magnesium alloys are the easiest to machine of all common metals. High cutting speed and cheap tools can be used during processing, and the tool consumption is low. And without grinding and polishing, a very smooth surface can be obtained with cutting fluid.