Food machine parts

Lost foam casting is currently one of the most advanced casting processes in the world. It is hailed as a revolution in the history of casting. It is the main way of"green intensive casting" in the 21st century. The more and more important position 1. Lost foam casting is also called negative compaction casting (EPC).

Precision cast steelIt is made of expandable polystyrene (EPS) as the raw material to make a foam type. According to the content of the sand box, the model bundle is effectively and reasonably combined, and special coatings are applied. After drying, it is used without moisture, binders and other additional The dry sand of the agent is buried in the negative pressure sand box, and the molten metal is poured under the appropriate negative pressure after micro-vibration compaction. The castings produced by this method have the advantages of smooth surface, accurate size, and no flash burrs.

Lost wax castingThe specific advantages of lost foam casting are as follows:

1.Guangdong alloy steel castingThe size and shape of the castings are accurate, the reproducibility is good, and it has the characteristics of precision casting; the surface of the castings is high;

2. Cancel the sand core and core making department, eradicate the casting defects and waste products caused by core making and core setting;

3. The out-of-box, no mold-taking, greatly simplifies the modeling process, and eliminates casting defects and waste products caused by mold-taking and closing;

4. Adopt dry sand modeling without binder, moisture and any additives to eradicate various casting defects and waste products caused by moisture, additives and binders;

5. The sand processing system is greatly simplified, all the molding sand can be reused, and the molding sand preparation department and waste sand treatment department are eliminated;

6. Shaving sand is extremely easy, which greatly reduces the workload and labor intensity of sand falling;

7. The casting has no flash and burr, which reduces the cleaning and polishing workload by more than 50%;

8. The pouring riser of reasonable shape can be set in the ideal position, which is not restricted by traditional factors such as parting and mold taking, and reduces the internal defects of the casting;

9. Negative pressure pouring is more conducive to the filling and feeding of liquid metal, and improves the density of the structure of the casting;

10. Combined pouring, multiple pieces in one box, greatly improving the process export rate and production efficiency of castings;