Shrinkage cavity and porosity defects are common defects in casting production. One of the purposes of numerical simulation of casting solidification process is to track and predict the formation of shrinkage cavity and porosity defects in casting solidification process, so as to realize the control of internal quality of...
Although the numerical simulation technology of temperature field has become practical, in fact, there are still many aspects worthy of research on improving the adaptability of sand casting shape complexity, calculation efficiency, high-quality visualization and convenient interface operation. For the above reasons and in order to achieve the objectives...
The basic idea of computer solidification simulation is that firstly, the geometric modeling of casting entity is meshed and discretized to obtain the topological data of each element; Secondly, after the continuum is discretized, the differential equations can be easily transformed into algebraic equations and solved in a special...
The blow hole defects produced by wet molding clay sand cast steel process are mainly intrusion blow hole and precipitation blow hole. Intrusive blow hole defect is that gas intrudes into liquid metal from the outside, mainly from molding sand, core sand, cold iron, etc., or may be involved...
Casting material database system is an indispensable part of casting simulation software. For a complete set of numerical simulation software, the completeness of the material content in the database, the reliability of the data, the data manipulation function of the database and the smoothness of the connection between the...
Sand casting fillet is directly related to the internal and external quality of products. At the joint, if the fillet is set unreasonably, it will lead to slow solidification speed and easy to produce defects such as crack, deformation, shrinkage cavity (looseness), sand sticking and so on. After consulting...
After years of development, the prediction criterion of shrinkage porosity and shrinkage defects of steel castings has reached a high level in terms of accuracy and application range, which can effectively predict the shrinkage porosity and shrinkage defects in casting steel. At present, most simulation software at home and...
Shrinkage cavity and porosity defect is one of the most common defects in the casting process. The prediction of the formation, size, position and shape of shrinkage cavity and porosity defect is not only an important content of numerical simulation research, but also the most important part of numerical...
Many parts of construction machinery such as bulldozers and excavators are cast steel castings, which often have shrinkage defects. Light shrinkage and porosity will increase the cost of repair and inspection, and heavy shrinkage and porosity defects will lead to the scrapping of steel castings. Combined with the actual...
The defects of shrinkage cavity and porosity are briefly introduced. Combined with the theories of filling capacity of liquid metal, solidification mode of steel castings and shrinkage of steel castings, the process design of traditional steel castings is carried out by taking the accessory bracket of a construction machinery...