Water-bound molding sand

Fine-grained for optimal surface quality
Suitable for casting light metal, heavy metal, and cast iron (GJL, GJS, and G-GX)
Withstands up to approx. 1200°C
Recondition with water when strength is lost
Environmentally friendly alternative to oil-based molding sand
Auxiliary materials selectable in combination and free of charge

Price range: 14,99 € through 98,49 € inkl. MwSt.

Weight

Combination

Clear

EAN: 4255797345629 SKU: FS-WB-XXXX-XX Categories: Casting Accessories, Combination offers, Foundry Supplies Tags: Environmentally friendly, Mold making, Molding sand

Description

Water-bound molding sand

Fine-grained for optimal surface quality
Environmentally friendly alternative to oil-based molding sand
Suitable for casting light metal, heavy metal, and cast iron (GJL, GJS and G-GX)
Durable up to approx. 1200 °C
Filling quantities: 1 kg, 5 kg, 10 kg and 25 kg
Recondition with water when strength is lost
Auxiliary materials selectable in combination
Instructions for use in the description

Technical data for our water-bound sand:

Compressive strength: 9.0 N/cm²
Shear strength: 3 N/cm²
Gas permeability: 18–20
Flowability: 40
Fineness (AFS): 140
Avg. grain size: 0.09 mm

The water-bound molding sand is an oil-free and more environmentally friendly alternative to the standard oil sand in our range. It can be processed in the same way as the oil-bound molding sand. A major advantage is definitely that simply 0.1% water can be added to restore the strength of the sand and no special oil or paste is required. The disadvantage, however, is the lower gas permeability compared to the oil-bound molding sand, and that the water in the sand can evaporate over time and lose its strength if it is not stored accordingly in a closed container.

For use:

When making molds, the sand should be well compacted.

To prevent the sand from sticking to the object to be molded and between the mold parts, use talc or mold release spray or talc as a release agent.

To ensure that all details of the object to be molded are shown to their best advantage, we recommend finely sieving new sand over the object before filling the mold. This guarantees that the entire surface of the mold is pressed evenly into the sand during compaction.

If you pour metals and alloys with a casting temperature above 400 °C into the sand, it will burn where it comes into contact with the melt. The water-bound sand will also turn dark to black because components burn off.

To reprocess the burnt sand, use approx. 0.1% of the sand mass of water and simply mix it in. The black sand created after mixing can be used as a filler. However, only new, orange sand should be on the object to be molded.