Simulation Of Solidification Thermal Action Of Iron Materials And Its Application In Cast Iron And Cast Iron

The core equipment of Aluminum industry is an aluminum reduction cell and phosphorus iron casting charcoal, development and progress of technological level is the main mark of aluminum production technology. Aluminum electrolytic cell and phosphorus iron casting charcoal process exists a variety of physical fields, and coupling effect of multi-physical fields results in a variety of physical and chemical reactions, which significantly effect on the production energy consumption, service life and production efficiency of aluminum reduction cell and phosphorus iron casting charcoal process. Therefore, establishing a precise multi-field coupling simulation model of aluminum reduction cell and phosphorus iron casting charcoal is significant in developing high productivity, high efficiency, long life, low power consumption of the new aluminum reduction cells.In this paper, the SolidWorks and ANSYS finite element software were used to study the thermal field and stress field during the solidification process, aiming to optimize the solidification process of cast. In addition, the casting process of phosphorous pig iron and the solidification process of spheroidal graphite cast iron were studied.During the casting and solidification processes of phosphorous pig iron, the distribution and change feature of temperature and stress of cathode carbon and steel with different preheating temperature (22℃、200℃、400℃、500℃、550℃、 600℃) were analyzed. The results indicated that the cooling time increased and the maximum stress decreased gradually with the preheating temperature increased. And the higher the preheating temperature, the less the maximum stress and the less crack of carbon assembly formed.The changes of temperature and stress of carbon cathode were studied through the simulation under the condition of same preheating temperature of carbon and steel bar, when the size of phosphorus pig iron was different (10 mm、12.5 mm、15 mm). The results found that the maximum stress of carbon cathode decreased with the casting thickness of phosphorus pig iron increased, thus the phenomenon of cracking was effectively alleviate under the casting and cooling process. Moreover, it could be found modified curved interface could obviously reduce the maximum stress of carbon cathode compared with traditional one through changing the shape of interface among carbon, steel bar and phosphorus pig iron.Furthermore, in this paper, the casting technology of ZQQTB manganese alloy cast iron ball and ZQCr2 chrome cast iron ball were simulated, and the defect sites of cast ball were predicted in the casting process and the cause of ball internal shrinkage was analyzed. In addition, the simulation was used to study the optimization casting program of pouring system through adding iron mold and sand cover and shortening the size of the runner gating system and other measures, and simulation results were consistent with experiment results.