Study On Magnesium Alloy Casting/Mould Interfacial Heat Transfer And Development On Database System For Magnesium Alloy Thermo-physical Properties

The numerical simulation technology in the process of foundry is the advanced field of foundry subject, and the only way to reconstruct the foundry industry. It is able to optimize the design of foundry technique, insure the quality of casting, cut the period of trial-manufacture, and cut the manufacture cost. The material physical properties parameter and dispose of limited condition is the direct evidence of numerical simulation technology and affect the veracity and the dependability of simulate result crucially. And the numerical simulation technology in the process of foundry deals with all kinds of material, and the multiplicity of the character of the material, so that the management of the material physical properties parameter is inconvenience.Magnesium alloy is the green and high quality material. And due to the insufficient study of interface between magnesium alloy casting and metal mould, the numerical simulation technology in the process of foundry does not exert proper effect. The interfacial heat transfer condition of casting/mould affects the result of the numerical simulation technology in the process of foundry a lot, so in the paper it have studied the condition by experiment weightily on the ground of analysis of the interfacial heat transfer mechanism of magnesium alloy casting/mould, and have researched and developed the database system for thermo-physical properties parameter of magnesium alloy.In the paper, the current experiment equipment for studying the interfacial heat transfer character and the interfacial electricity character between the casting and metal mould is found with theory of the heat transfer, and it have studied the interfacial heat transfer character and the interfacial electricity character between magnesium alloy casting and the metal mould by experiment with the equipment in the steady heat transfer, and have obtained the interfacial heat transfer coefficient between the casting and the metal mould in different temperature. And it have found there is some corresponding relationship between the interfacial heat transfer coefficient and the interfacial resistance, and it have brought up a new thinking for the studying of the interfacial heat transfer coefficient of the casting/mould.There are many factors to affect the heat transfer and flowing in the process of filling and solidification of casting. And all the factors are relational with the thermo-physical properties parameter. Due to the variety of the thermo-physical properties parameter, the management of the date of the material parameter is inconvenience, while a powerful database system for thermo-physical properties parameter is also needed for the perfect analysis system of casting solidification. In the last chapter of the paper, a database system for thermo-physical properties parameter of magnesium alloy with perfect function is researched and developed with Visual Basic 6.0 as the front-end development platform and Access 2003 as the back ground database system. And it has introduced its main functions briefly. The database system enables the management of magnesium alloy database system for thermo-physical properties parameter to be more convenient, and it can be used as the sub-module for foundry CAE software.