The process of lost foam casting

1. Make foam gasification molds (manual, mechanical);
2. Foam gasification, mold combination after drying;
3. Brush the surface of the foam gasification mold and spray refractory paint and dry it again (must dry thoroughly);
4. Place the special sand box on the three-dimensional vibrating table;
5. Fill in the bottom sand (dry sand) to vibrate and scrape flat;
6. Put the dried foam gasification mold on the bottom sand, divide it into sand filling according to the process requirements, and automatically shake the box mouth after a certain period of time;
7. Cover the mouth of the sand box with plastic film, put the gate cup, and connect the negative pressure system. After compacting, molten steel casting is carried out, the foam gasification mold disappears, and the molten metal takes its place;
8. After the casting condenses, release the vacuum and turn the box, take out the casting, and carry out the next cycle.