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以分数步长法差分计算理论为基础，开发出了能处理复杂边界条件（包括加热和冷却系统）、任意时间步长、非均匀网络、变物性参数的三维压铸过程温度场数值模拟算法，成功地解决了在压铸温度场数值拟计算过程中由于显示差分的稳定性、全隐式差分算法需要求解庞大的线性方程组等导致的计算速度慢和计算效率不高等问题，计算结果与实际测温结果基本吻合。它为在普通微机上以较短的时间完成具有复杂结果的压铸型—压铸件温度场数值模拟提供了一条切实可行的途径。
Based on the theory of fractional-step difference method, numerical simulation of temperature field in 3D die-casting process has been developed, which can handle complex boundary conditions (including heating and cooling system), arbitrary time step, non-uniform network and variable physical parameters. Solve the problem of calculating the temperature field due to the display of the stability of the differential in the numerical simulation process, the full implicit difference algorithm needs to solve the huge linear equations, the calculation speed is slow and the calculation efficiency is not high and so on. The calculation results and the actual temperature measurement The results are basically consistent. It provides a practical way for the numerical simulation of the temperature field of the die-casting-die-casting with complicated results on a common microcomputer in a short time.