Low pressure casting can provide a lot of useful information for flow field analysis of casting molds. The casting case requires injection pressure and locking pressure. You should know that this part is complete. Model flow analysis ensures the diversity of filling problems. For example, shortwave, foam, imbalanced filling, etc. Mold flow analysis can change process conditions such as gate position and injection speed.
In deformation analysis, it is sometimes necessary to predict deformation trends. Deformation analysis can be used to compare changes in gate position, wall thickness, and design. Check the prototype through flow analysis and solve key issues. The efficiency of the circulating water cooling channel can be determined through analysis. The use of cooling deformation analysis method has improved accuracy. Due to the difficulty in replacing cooling water in the mold. This analysis is very useful before mold opening.
The welding position can be predicted through mold flow analysis. At the same time, it helps to prevent straight lines from appearing easily. Mold flow analysis can also provide clues that affect welding quality. For example, pre melting point and welding pressure.
How to handle the pitting of stamped castings? Due to the low temperature of the mold or alloy liquid, small pitting corrosion may appear on the surface of the casting under approximate negative pressure, resulting in die casting defects. Analysis of the causes of pitting corrosion in castings
During filling, the metal is dispersed into dense droplets, which collide with the mold wall at high speed;
Internally poured thick layer;
The internal pouring speed is too fast;
Fourthly, the mold temperature is low.
The results show that the flow of molten metal is dispersed during hot mold start-up, and a reasonable design of the aluminum casting system can avoid splashing of molten metal, improve exhaust conditions, and prevent excessive gas from entering the liquid state; In the early stage of hot forming, it was found that the flow of the metal melt was a jet. Adjust the thickness of the inner pouring;
In the early stage of hot forming, it was found that the flow of the metal melt was a jet. Reduce the internal pouring rate appropriately;
The cold diaphragm turns black on the surface of the casting. Open the mold heater or spray less and heat more to increase the mold temperature to meet the process requirements.
