Method for improving CAE analysis precision in high-pressure casting mold-filling process

Abstract

The invention provides a method for improving the CAE analysis precision in the high-pressure casting mold-filling process and belongs to the technical field of numerical simulation of casting computers. The method comprises the specific steps that 1, the high-pressure mold-filling process of a casting is simulated by using CAE software, CAE analysis parameters are set according to a process in actual production, and CAE simulation is conducted on the high-pressure casting process; 2, a high-pressure casting visualization device is applied to shoot the high-pressure mold-filling process of the casting; 3, a CAE analysis result is compared with an actual shooting result, main factors affecting the mold-filling precision for CAE analysis are found, input parameters for CAE analysis are corrected, and the CAE analysis precision is improved. The part which does not conform to the actual situation in CAE simulation analysis can be accurately looked up, the cause of difference existing is analyzed in a targeted mode, a numerical simulation calculation model is modified by modifying the CAE simulation parameters, then the modified numerical simulation calculation model is applied to the casting complicated in structure, a mold casting system is optimized, and the mold-filling defects such as air trapping, air involving, misrun and oxidization and slag inclusion produced by improper design of the mold casting system are avoided.

Description

technical field [0001] The invention belongs to the technical field of casting computer numerical simulation, and in particular relates to a CAE analysis method of a casting filling process. Background technique [0002] Since the high pressure casting process fills the cavity under high pressure and high speed, the air in the cavity is inevitably trapped inside the casting to form subcutaneous pores. In the production of high pressure casting, the rejection rate of castings caused by mold filling is as high as 30%, resulting in a great waste of manpower, material resources, cost and time. [0003] The existing computer numerical simulation technology (CAE) realizes the visualization of casting mold filling and solidification, which can help engineers predict the defects that may occur during the mold filling and solidification process in advance, and take timely measures to control the defects. However, due to the uncertainty of the numerical simulation parameters, the num...

AI Technical Summary

Problems solved by technology

If you only compare the CAE calculation results with the casting results, you can only see the defects after cooling, but you cannot understand the real-time status of the filling process, so it is difficult to accurately predict filling defects such as air holes, cold shuts, and insufficient pouring. , the accuracy of CAE filling simulation analysis urgently needs to be improved

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