In lost foam casting, under normal circumstances, there are many factors affecting the dimensional accuracy of casting, such as the structure, shape and size of the lost foam casting, the influence of the quality of the foam plastic, the influence of the coating, the influence of the casting process, the casting process and so on.
In the whole lost foam casting process, the pouring process is one of the most important links. The four factors of pouring system, pouring speed, pouring temperature and pouring process are the key processes to improve the quality of castings. Only by continuous improvement and perfection can we cast castings with high precision and good quality.
The coating also has a great impact on the accuracy of lost foam casting. The coating performance and coating thickness can affect the pattern size, thus affecting the dimensional accuracy of castings. Therefore, in lost foam casting, the coating should have good performance and sufficient strength. At the same time, the coating hanging operation process should be reasonable.