The numerical simulation technology (CAE) of the casting process has gone through decades of development, from simple two-dimensional simulation to complex three-dimensional simulation; from single consideration to temperature field, flow field or stress field calculation to simultaneous consideration Multi-field coupling calculation; from macroscopic scale to multi-scale simulation analysis, and predicting the microstructure and performance of castings; from ordinary gravity casting to special casting such as investment, centrifugal, low pressure, die casting; qualitative analysis Gradually expand to quantitative forecasting; extend from providing a single CAE simulation analysis to a total solution that provides CAD/CAE, informatization, digital integration; and successful application in different enterprises and different casting production.
At present, coagulation, filling, flow and heat transfer coupling technology has been widely applied to various casting alloys and casting methods, such as sand casting, metal casting, investment casting, die casting, low pressure / differential pressure casting, centrifugal casting, pouring Transfer casting covers a wide range of cast alloys that are almost common. Casting defects such as shrinkage, shrinkage, gas, inclusion, underfill, and cold barrier can be predicted quantitatively/semi-quantitatively. Due to the many influencing factors in the casting process, in order to make the simulation results more accurately describe the casting process, the current academic and foundry CAE software developers are working around the field of casting process, including stress/strain field simulation, tissue performance simulation, and Other aspects of simulation, such as gasification mold pattern generation process simulation, core shooting process simulation, casting segregation simulation, casting smelting process simulation, and casting heat treatment simulation.
For the enterprise, the introduction of a suitable casting CAE system is only the beginning. How to apply the casting technology simulation technology is a comprehensive problem involving multiple links. Should be grasped from the following aspects.
Scientific and reasonable understanding of CAE technology <br> The practice of many enterprises at home and abroad proves that the reasonable choice of casting CAE system and the scientific use of CAE system will bring about the benefits.
Suitable user
Casting CAE simulation analysis requires three-dimensional modeling, computational analysis, result evaluation, and multi-program comparison. Users should have a wealth of process experience, three-dimensional modeling capabilities and computer operating capabilities.
Strict production management system Every optimization scheme of casting process optimization technology is born under specific process conditions. The implementation of the optimized process plan should be guaranteed by the system.
Combination with other technologies
The combination of foundry CAE technology and industrial CT (ICT), 3D printing and other technologies will make the benefits more prominent.
At present, casting computer simulation technology has been integrated into all aspects of foundry production at an unprecedented speed. From breadth to scale, from single casting simulation technology to casting process design, management integration and integration technology research; from the depth Continue to explore and improve the mathematical models, numerical algorithms, material physical parameters of casting processes, achieve high-precision quantitative prediction and process optimization, and achieve intelligent and integrated process optimization and optimization. These technologies include: high-precision defect prediction technology, thermal property parameters and reverse technology, intelligent casting process design and optimization technology, as well as casting process simulation and integration with casting digital management technology.
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