At high temperatures the Meltex (Coal Dust) former itself becomes plastic and swells minimizing compressive stresses produced inside the mold due to the thermal expansion of silica. Swelling and the formation of carbon residues, help to stabilize moisture. Classic casting defects such as erosion, penetration and surface roughness can thus be prevented by the presence of such carbon carriers.
Reduction in the wettability of the mold surface through the formation of a reducing gaseous hydrocarbon atmosphere
Absorption of compressive stresses produced within the mold during casting
Reduced environmental burden with organic crack emissions minimized due to a low consumption of additives
Maximum recyclability through improved mold collapse and sand/casting separation at shakeout. We have the right Meltex (Coal Dust) formers for every application conditions. Our Lustrous Carbon (Coal Dust) Powder also acts as a partion joint between sand and metal in order to avoid distortion of metal surface after cooling. Because of Low Ash and High Volatiles content, our Meltex (Coal Dust) Powder evaporates from sand bath faster and does not allow effect of sand on the metal.
| Specification | Meltex | Meltex P | Meltex HPL |
|---|---|---|---|
| Volatile Matter | 50 - 60% | 50 - 55% | 40 - 50% |
| ASH Content | 5 % | 5 % | 7 % |
| Fixed Carbon | by Difference | by Difference | by Difference |
Revolutionary new technology using "nano" materials
Ceramic nano-materials blended with anti-scabbing agents & carbon in a proprietary blend
Ceramic Surface is formed where molten metal meets sand
Non-wetting barrier between the molten metal and sand ensuring a superior surface finish.
Reduction in Bentonite Consumption without affecting GCS
Reduction in consumption of Lustrous Carbon
Reduction in fresh sand consumption
No lumping of sand during shakeout
Excellent Flowing Properties
Improved refractoriness and permeability
Better swelling / button formation
