Ceramic Sand for Lost Foam Casting

The application of molten ceramic sand (Ceramic Sand) in lost foam casting, according to the different casting size, wall thickness and material, the particle size selection range is mainly as follows: 8/12,10/20,15/30,20/30, etc. According to the specific situation of the factory to make the corresponding choice.

Classification:

Molten Ceramic Sand (Ceramic Sand)

Key Words:

Ceramic Sand

Telephones： 0086-0398-3186627

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Product Description

Product Name: Ceramic Sand for Lost Foam Casting

Physical and Chemical Properties of Molten Ceramic Sand

grain shape	spherical	angular coefficient	≤ 1.1
Color	black brown	Al₂O₃	65-85%
Refractory temperature	≥ 1800 ℃	Fe₂O₃	≤5%
Accumulation specific gravity	1.95-2.05g /cm3	SiO₂	12~25%
true density	3.4g /cm³	TiO₂3	~4.5%
Thermal conductivity	(1200 ℃)5.27W/M·K	P H value	7~8
coefficient of expansion	(20~1000 ℃)6 × 10-deg/℃	Granularity	6 ~ 320 eyes (φ 0.053 ~ 3.36mm)

Molten ceramic sand (ceramic sand) commonly used particle size:
8/12, 12/20, 30, 20/40, 30/50, 40/70, 100, 140, 140/200, etc.

Characteristics of fused ceramic sand (ceramic sand)
1. The thermal expansion rate is small-the expansion rate of molten ceramic sand (ceramic sand) after heating is 1/5 of silica sand and 1/2 of chromite sand. The castings produced have high dimensional accuracy, few veins and crack defects, and high casting yield;
2, The sand is spherical, the surface is smooth, so that the binder can be evenly covered and less consumption, sand liquidity is good, easy to spring, and good air permeability;
3, Is a neutral material-acid, alkali binder can be used;
4, High fire resistance-reduce the tendency of casting sand;
5. Good crushing resistance-ceramic sand is dense in material, high in compressive strength, low in crushing rate during repeated use, which reduces waste sand emissions and is conducive to environmental protection;
6, Cost-effective-compared with zircon sand, its price is only 20 to 40% of zircon sand. At the same time, because the sand is spherical, its surface area is small, the amount of binder can be reduced by 30% to 50%;
7. Wide range of applications-water glass sand, resin sand, precision casting, 3D printing, polishing and cleaning of copper and aluminum parts, etc.

Brief Introduction of Lost Foam Casting

Lost foam casting, is a new type of casting method, it has the advantages of simple operation, easy to learn and low cost. The method is to bond foam models similar in size and shape to the casting into model clusters. After that, these models are brushed with a layer of fire-resistant paint and dried. Next, these models are embedded in molding sand for molding. Under negative pressure, the liquid metal is injected into the model to solidify and cool, and the foam model disappears. A casting conforming to the shape and size of the model is thus formed. Because the molten ceramic sand (ceramic sand) has good environmental protection and regeneration performance, it is widely used in lost foam casting to replace quartz sand. The rise of a large number of the process is in the last 20 years, but also because of the emergence of ceramic sand, but also to speed up the process of a large number of popularity. The lost mold process uses ceramic sand as filling sand, because the ceramic sand grain-shaped round, good liquidity, high permeability, strong durability, with high thermal conductivity, low dust and other characteristics, the finished product rate of castings significantly increased, the comprehensive cost decreased, the sand consumption per ton of castings is only 1-2kg, the labor environment is significantly improved. Generally use 10/20 mesh, 20/30 mesh. The use of ceramic sand as filling sand has become the "standard configuration" of the lost foam industry ".

Coated Ceramic Sand

Furan Resin Ceramic Sand

Relevant knowledge

Brief Introduction of Lost Foam Casting

02-19

2024

Chenghui

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0086-13809005912

Ceramic Sand for Lost Foam Casting

Chenghui

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