OEM Custom Carbon Steel and Alloy Steel Lost Foam Casting Products from China Foundry with CNC Precision Machining Services

The lost foam casting products refer to the casting products made by lost foam casting process. Lost Foam Casting, also called EPC (Expandable Pattern Casting) or LFC (Lost Foam Casting), is to put the foamed plastic pattern group coated with refractory coating into the sand box, and fill it with dry sand or self-hardening sand around the pattern. During pouring, the high-temperature molten metal makes the foam pattern pyrolyzed and “disappears” and occupies the exit space of the pattern, and finally the casting method of the casting is obtained. The casting produced by this method has high dimensional accuracy, smooth surface, and less pollution in the production process.

▶ Advantages of Lost Foam Casting
1- Lost foam casting is a near-net shape casting method. The dimensional tolerance of the casting can reach CT6~CT9, and the surface roughness is Ra=6.3~50 μm. The shape of lost foam castings can be comparable to resin sand castings.
2- Lost foam casting can produce castings with complex shapes and complex cavities. Compared with the resin sand process, the more sand cores are replaced, the greater the profit margin of lost foam casting. The core competitiveness of lost foam casting is the production of difficult castings with complex inner cavities, such as engine block, engine head and box, etc. These characteristics make the superiority and economic benefits of lost foam casting fully appear, and realize the lightweight and precise casting.
3- Lost foam casting does not require mold removal, which provides greater freedom for casting design and casting process. In terms of process design, the lost foam casting process is first broken into parts and then spliced into a whole, and then the lost foam process is used for integral casting, so that the lost foam casting has the competitive advantage with the traditional sand casting.
4- The use of lost foam casting process can greatly reduce labor intensity, reduce the generation of solid waste, and the used dry sand can be recycled. This feature meets the requirements of energy saving and emission reduction, and has changed the harsh environment of traditional sand casting.