Application of Numerical Simulation Technology for Casting Process in Precision Casting

The numerical simulation technology of casting process is increasingly being applied in the manufacturing process of precision castings. The simulation analysis of precision casting process predicts possible problems such as shrinkage porosity and shrinkage holes in castings, and optimizes process parameters through design experiments and optimization algorithms to find a good casting process plan. Through casting simulation, not only can the quality of castings be improved, but also the development cycle of castings can be shortened. The advantages of casting simulation technology are mainly manifested in the following aspects.

(1) It can simulate various stages of casting pouring. The algorithms for casting filling and solidification simulation include three-dimensional finite element method, numerical method, priority difference method, etc. At present, the simulation of casting filling process has become relatively mature, and significant breakthroughs have been made in the accuracy and practicality of simulation.

(2) Predict and analyze potential defects that may occur during casting. During the production process of castings, casting defects are inevitable. By using casting simulation technology, the location of casting defects can be predicted, allowing designers to make targeted structural improvements. The current defect simulation prediction technology has become mature.

(3) Stress field analysis. Casting stress is an inevitable problem in castings. At present, casting simulation software has the ability to analyze residual stress and strain.

Due to the widespread application of casting simulation technology, the entire casting design is more three-dimensional. Compared to before, the expenditure on manpower, material resources, and financial resources used in the actual production of castings has been greatly reduced.