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  • CERAMIC FOUNDRY SAND

CERAMIC FOUNDRY SAND

Catalog: Abrasive | 2023-10-09

Ceramic Foundry sand is a kind of refractory particle with diameter of 0.053-2.0mm.Mainly made of Al2O3·SiO2. It is ball-shaped particle made from bauxite,by high-temperature melting in electric-arc furnace, spraying and cooling.

Size: AFS25-35; AFS25-30; AFS30-35; AFS35-40; AFS40-45; AFS45-50; AFS40-50; AFS50-55; AFS55-60; AFS60-65.

Product Details

PROPERTIES

Chemical Composition

SiO2

5– 15%

Al2O3

70–85%

Fe2O3

5%max

TiO2

5%max

MgO

0.5%max

K2O

0.5%max

CaO

0.5%max

Physical Character

Grain shape

Perfect round ball shape

Color

Brown-Black

Angle index

1 .1 max

Size rang

0.053-3.36mm

Loose Bulk Density

1.9 – 2.1 g/cm3

Refractoriness

2050℃

Liner thermal expansion

(200℃ - 1000℃) 5×10-6/℃

 Main Advantage

1

Stabe quality on the chemical composition

2

Perfect grain round shape and various grain sizes

3

High gas permeability

4

High temperature resistance

5

Good break down and fast curing and good release

6

Perfectly round shape with higher fluidity improves fill-in efficiency while reducing the resin level

7

Smooth surface of spherical shape greatly improves collapsibility after pouring

8

Very low thermal expansion ensures fewer or no casting defects such as veining and deformation

9

Excellent thermal conductivity and heat absorption capacity close to that of Zircon

10

Superior refractory equivalent to Zircon and Chromites 

APPLICATION

  • Widely used in foundry technique like resin-bonded sand, sodium silicate sand, and clay- bonded sand for sand core and casting mould making.

  • Replace chromite sand and widely used in sand core making like jacket core, oil duct core, tappet core of engine.

  • Replace chromite sand for steel casting facing sand and sub-layer of molding sand (backing sand).

  • Widely used as dry sand and sand box for EPC process and V method of casting processes.

  • Widely used as the main raw materials of advanced refractory products (Ladle drainage sand,gravity casting material, casting coating, etc).

  • Widely used as cleaning sand for copper and aluminum alloy castings.