Research Of Die-casting Process And Properties Of AM60B Alloys

Magnesium alloy is one of the lightest metal materials of the project. It has good mechanical properties at strength, stiffness and others, particularly suitable for manufacture light weight, high strength, reducing noise and the structural components of the project and shell parts requires strength. Magnesium alloys has the advantages of low melting point, lower heat, fast speed and so on, which is very suitable for forming and processing by modern casting technology. With modern science and related industrial technology development, the application of magnesium alloys rapidly expand, particularly access to large-scale application in the automobile industry, electronics and information.Papers is made die-casting AM60B magnesium alloy as research material,and on the basis of the best standards derived by the Graduate though orthogonal test, then through melting, refining, and cold chamber die-casting technology, further testing samples is made. Through physical and mechanical properties testing and microstructure observation, the process parameters is refined and valided deeply.The research methods are that the four parameters are made as the research object, which are pouring temperature, mold temperature, velocity and pressure of injection .Then keeping three of the process parameters stability on the best level, studying another affected flow properties, mechanical properties, organizational performance, thermal cracks and defects casting of AM60B alloy. The relationships on the casting process -structure - performance of magnesium alloy materials are made by the way of whole research.The results show that good microstructure , casting properties and mechanical properties of AM60B alloy can be made. Tensile strength is up to 223 MPa, elongation rate is 10.5%, HBS is 59. when the pouring temperature of 680℃, mold temperature of 180℃, pressure-velocity of 3.5 m/s, pressure of 75 MPa are unchanged.Through testing and analysis, strictly controling the molten magnesium alloys and metallurgical quality, then selecting process parameters on the topic, we can achieve the AM60B magnesium alloy parts with fine appearance under the condion on cold chamber die casting. Tests further proved the correctness and reliability of the test data. It also further provided the oretical basis and the practical accordance for the industrial productions of magnesium alloy.