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Vacuum Process Casting Auxiliary Materials

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Cleaning Methods for Castings

2026-02-03

In the lost foam casting process, operations such as sand mixing, mold assembly, and core setting are eliminated. Compared with traditional sand casting, lost foam castings are free from the difficulties and inconvenience of shakeout and cleaning caused by poor collapsibility of sand molds and sand cores. In addition, processes such as chiseling and removing casting flash and burrs are eliminated. Only riser removal and grinding of the remaining internal gate areas are required.

Compared with conventional sand casting, this not only simplifies the process and reduces labor intensity, but also improves the working environment and enhances the surface quality of castings. At the same time, it delivers significant economic benefits, fully demonstrating the advantages and strengths of the lost foam casting process.

To obtain a smooth casting surface, it is essential to remove oxide scale and localized sand adhesion from the casting surface. Like sand castings, lost foam castings also require surface cleaning; however, the cleaning process is relatively simpler and requires less time.

At present, shot blasting is the primary cleaning method. Other methods such as tumbling, wheel blasting, and chemical cleaning are now rarely used in lost foam casting production. The selection of shot blasting equipment should be based on the casting’s external dimensions, weight, and production volume, with different types of shot blasting machines chosen accordingly.

EPC Casting Production Line

Lost Foam Casting Equipment

Vacuum Process Production Line

Sand Processing Equipment

Water Ring Vacuum Pump

EPC Casting Auxiliary Materials

Vacuum Process Casting Auxiliary Materials

Cleaning Methods for Castings