Fused ceramic sand is made of high-quality bauxite as raw material through electrofusion, granulation, screening and other processes, which is very similar to spherical refractory particles.
Why using fused ceramic and?
Fused ceramic sand, also known as electric fused ceramsite and its scientific name is fused ceramic sand, which is a kind of green casting material. Its cost performance is much higher than that of silicon sand, chromite sand, zircon sand and other casting sand. The excellent performance provides a practical solution for energy saving and emission reduction in the foundry industry, and is the best choice of molding materials for foundry enterprises. Compared with traditional materials, fused ceramic and has compact structure, smooth surface, nearly spherical shape, high temperature resistance, good air permeability and collapsibility, and high recycling rate. In the sand casting process, the use of Fused Ceramic sand can save 30-50% of the binder, improve the product quality and yield, and the recycling rate can reach more than 98%. The direct effect on the casting enterprise is to reduce the production cost, but also significantly reduce the emissions of solid waste and waste gas of the casting enterprise, and improve the production environment of the casting enterprise.
Application fields of Fused Ceramic Sand
It is suitable for sand casting (molding sand, core sand), V-process casting, lost foam casting (filling sand), coating (Fused Ceramic sand powder) and other casting processes. It is widely used in the fields of automotive engines and automotive parts, large steel castings, iron castings and so on. It is called green environmental protection type casting sand.
Characteristics of Fused Ceramic Sand
·The thermal expansion coefficient is small, and the performance can be comparable to that of zircon sand. With its molding sand, the casting will not produce expansion defects.
·The sand particles are spherical, with good fluidity and air permeability.
·The surface is smooth and the structure is compact, so that the adhesive can be evenly covered.
·Fused ceramic sand is a neutral material, acid and alkali adhesives can be used.
·Good recycling performance and high cost performance.
·Compared with chromite sand and zircon sand, its price is only 30-50% of zircon sand and chromite sand. At the same time, because the sand particle is spherical and its surface area is small, the amount of resin can be reduced by 30-50%, and the addition domain of sodium silicate is
≤ 4%. The casting defects caused by the adhesive are reduced and the yield of castings is improved.
·High fire resistance, easy to collapse.
·The mullite phase of fused ceramic sand is much higher than that of sintered products and has good fire resistance.
·High thermal conductivity, good stability and no cracking.