The traditional casting process mostly depends on a large number of empirical test data. Casting numerical simulation is an important means to make the casting process from empirical test to scientific guidance. The use of simulation can w predict the product quality, determine the best process scheme, reduce the production cost and shorten the production cycle.
The foundation of the casting simulation system is the numerical simulation technology of the casting filling, solidification and cooling process. The system combines the numerical analysis technology, visualization technology and database technology to simulate the distribution of flow field, temperature field and stress field in the process of casting filling, solidification and cooling, and predict the casting quality according to the distribution of these fields, which is to promote the health of the traditional casting industry The only way for efficient development. Using the numerical simulation method of solidification process of casting process to optimize the casting process is a common method in modern casting.
With the continuous development of computer technology, casting simulation technology and automation technology, casting professional mold software is more and more widely used in practical production. At the same time of application, enterprises are also constantly promoting the development of software to make its design more reasonable and automatic.
In the design of casting process, the setting of riser is one of the most key links. The design of the riser is directly related to the quality of the casting. The function of the riser is to ensure that the casting will not have defects due to the poor shrinkage of the liquid metal in the solidification process. However, if the riser is too large, it will waste metal and increase the production cost. Therefore, when setting the juice riser, we should not only ensure that it can fully feed the casting, but also have a reasonable size, which can save the production cost. In the actual production process, foundry engineers mostly use the riser design principles and production experience to design the riser. Because the experience and experience of each engineer are different, there are great differences in the size and shape of the riser selected or designed. Some safety factors are too large and waste metal; Some safety factors are too small, and there are various defects in castings. The casting simulation software can effectively check whether the design of the riser is reasonable, and can avoid the shrinkage (porosity) defect caused by the unreasonable design of the riser to a certain extent.
However, there are many kinds of castings with different structural complexity. The casting simulation software can not guarantee the effective simulation of all products. Foundry workers should not rely too much on casting simulation software, but also need to improve their own design level.