Method and device for predicting defect tendency of aluminum alloy semi-continuous casting

Abstract

The invention provides a method and device for predicting the defect tendency of an aluminum alloy semi-continuous casting. The defect tendency of the aluminum alloy semi-continuous casting can be accurately predicted. The method comprises the following steps of: inputting the aluminum alloy components and aluminum alloy thermophysical parameters obtained through thermodynamic calculation into analuminum alloy semi-continuous casting model, and obtaining the element segregation maximum value, the shrinkage porosity criterion Niyama maximum value and the thermal cracking index maximum value ofthe aluminum alloy semi-continuous casting under various process conditions through high-flux finite element numerical simulation; and predicting the defect tendency of the aluminum alloy semi-continuous casting according to the obtained element segregation maximum value, the shrinkage porosity criterion Niyama maximum value and the thermal cracking index maximum value of the aluminum alloy semi-continuous casting. The invention relates to the technical field of aluminum alloy casting.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy casting, in particular to a method and device for predicting defect tendency of aluminum alloy semi-continuous castings. Background technique [0002] Due to its excellent properties such as low density, high specific strength, corrosion resistance and easy processing, aluminum alloy materials have broad application prospects and irreplaceable positions in aerospace, shipbuilding, nuclear industry and weapon industry. In the process of semi-continuous casting to produce aluminum alloy castings, affected by the production equipment and process parameters, the products are often accompanied by casting defects such as macro segregation, shrinkage porosity and hot cracking, and the products will be scrapped if serious. It is very important to screen out the components with low propensity for casting defects that meet the requirements from a large number of aluminum alloy components. [0003] I...

AI Technical Summary

Problems solved by technology

[0003] It is not only time-consuming and labor-intensive to study the defect tendency of semi-continuous castings for each aluminum alloy composition by experimental method, but also it is difficult to cover a comprehensive range of process conditions, and the accuracy of defect prediction is low.

Images