无锡市鼎隆贸易有限公司

CERAMIC FOUNDRY SAND

This new developed specific Foundry Sand is produced from the special selected high quality refractory raw material at very high temperature at 2,300 – 2,500℃. Our these ACFS sand has excellent solid cores with high strength and very low resin addition rates. The materials has excellent crystalline with formula is 5Al₂O₃-SiO₂

Application：
Shell moulds and cores for casting gray, Malleable and nodular cast iron, alloyed steel and carbon steel, non-ferrous metals, etc.

The Main Advantage
* Stabe quality on the chemical composition
* Perfect grain round shape and various grain sizes
* High gas permeability
* High temperature resistance
* Good break down and fast curing and good release

Chemical Composition

SiO₂	5– 15%
Al₂O₃	75–85%
Fe₂O₃	5%min
TiO₂	5%min
MgO	0.5%min
K₂O	0.5%min
CaO	0.5%min

Physical Character

Grain shape	Perfect round ball shape
Color	Brown-Black
Angle index	1 .1 max
Size rang	0.075 – 2.0 mm(AFS 40 – AFS 130)
Loose Bulk Density	1.9 – 2.1 g/cm3
Refractoriness	2050℃
Liner thermal expansion	(200℃ - 1000℃) 5×10-6/℃
Thermal conductive	(1000℃) 5.0W/(M℃)
PH	6.5 – 7.5

Size Distribution (Typical)

μm	Mesh	#40	#60	#75	#100
600	26	5%min
425	36	20-40%	5%min
300	50	35-55%	10-30%	10%min
212	70	0-20%	30-50%	5-25%	3%min
150	100	10%min	15-35%	25-45%	10-20%
106	140	5%min	0-20%	20-40%	35-55%
75	200		5%min	10%min	15-35%
53	280			5%min	10%min
PAN					2%min
AFS		40±5	60±5	80±5	110±5
GFN		65±10	105±10	140±10	200±10