Research On Air Quantitative Prediction For High Pressure Die-casting Mold Filling Process Based On Cae Technology

Die-casting products have many advantages such as high dimensional precision, low surface roughness, good mechanical properties and a good interchangeability; and because of its high production efficiency as well as high automation, die-casting products are widely used in our daily life. Air-entrapped is the main deficiencies which impact die-casting performance, so it is critical to discharge the gas of mould cavity as much as possible with appropriate die casting process. For this purpose, this paper takes the research on air-entrapped quantitative prediction technology for high pressure die-casting mold filling process based on CAE technology.Firstly, the paper took a simple die casting as the analysis mode to establish the formula of temperature, density, pressure and gas speed when passed spillway trough of gas in the die-casting mold cavity. The paper did the mathematical derivation for filling process of simple die casting using the theory of air quantitative prediction.Secondly, based on Huazhu CAE technology, the paper offered a program of calculation module about air quantitative prediction and post-processing module based on VC 6.0.And then, combining with the hydraulic simulation test, the paper designed a test method which could verify the theory of air quantitative prediction.Finally, combining with a zinc alloy die-casting case, use the program to calculate its quantitative prediction of gas based on the simulation analysis of Huazhu CAE. According to the trial calculation result, modify the die casting process to make the result meet the performance requirements of die castings.