Ceramic foundry sand questions about grades, resin use, and casting applications

Ceramic foundry sand is a sintered artificial spherical sand for foundry use. Its main chemical components are aluminum oxide and silicon oxide, and its mineralogical composition is mullite plus corundum. It is used in sand molding and can be used as a single sand in suitable casting processes.

The stated specification range includes Al₂O₃ of at least 53%, Fe₂O₃ below 4%, TiO₂ below 3%, and SiO₂ at or below 37%. The grain shape is spherical, with an angular coefficient of no more than 1.1. Particle sizes range from 45 μm to 2,000 μm, refractoriness is at least 1,800°C, bulk density is 1.45 to 1.6 g/cm³, and thermal expansion from room temperature to 1,200°C is 4.5 to 6.5 × 10⁻⁶/K.

These figures help a foundry compare a requested grade with its existing sand system. A buyer selecting a finer or coarser grade should compare the requested particle distribution with the mold, core, and finishing requirements.

Yes. The material is described as neutral and is applicable to both acid and alkali resins. It can be used in resin-coated sand, self-setting resin sand, and cold core box processes. Its spherical grains also support flowability and easier separation from cast parts.

A foundry should match the selected grade to its binder system and process settings. Include the resin type, molding process, and target particle distribution when requesting a material recommendation.

Applications include resin-coated sand, self-setting resin sand, cold core box, green sand, precision casting, lost foam casting, and 3D printing. The material can be used for cast iron, cast steel, and nonferrous metal casting.

A foundry may use one grade for a resin mold line and another distribution for a fine-detail application. The practical check is whether the requested particle size fits the equipment and surface-finish target.

Ceramic sand has a spherical grain shape, low thermal expansion, and high refractoriness. It is also described as resistant to wear, crushing, and thermal shock, with high reclamation potential. Its spherical grains can support flowability, separation from cast parts, and collapsibility. The stated application information indicates that it can require 30% to 50% less resin.

These properties are relevant when a buyer is addressing dimensional accuracy, mold filling, sand usage, or resin consumption. Process settings depend on the foundry's equipment and binder system.

Yes. The stated particle-size range is 45 μm to 2,000 μm, and the particle size distribution can be customized. Listed distributions include grades such as 20/40, 30/50, 40/70, 50/100, 70/140, and 100/200.

Before ordering, send the target mesh or AFS range, the current sand specification, and the casting process. This helps match the requested distribution instead of treating every grade as interchangeable.

Ceramic sand powder is the fraction below 0.075 mm, or below mesh 200. Powder grades are described as 200 mesh to 1,000 mesh, with refractoriness of at least 1,800°C. They are commonly used in foundry coatings and 3D printing, while coarser material is used for molding and core-making.

A buyer choosing coating filler should request powder mesh information. A buyer filling a molding or core system should request the coarser particle distribution instead.

Include the casting metal, molding or core process, resin type if applicable, required particle size or AFS range, expected usage, and whether the material is intended for molding, core-making, coating, or 3D printing. Also state whether a single-sand system is being considered.

For a useful request, send the grade or mesh range and estimated quantity to Shenghuo New Material Technology Co., Ltd. Ask the supplier to confirm the proposed particle distribution against your process before placing the order.