- Characteristics of refractories
- Density
- Particle size
- Strength
- Damage strength
- Heat shock resistance value
- Thermal conductivity
- Heat expansion coefficient (refer to graph)

- Problems arising from refractories' lining
- Super Heating : Occurs due to wrong insertion method of bridging and when excessively increasing temperature when working at melting furnace.
- Finning : It refers to casting infiltrating through the crack of refractories and the crack is classified according to the management of melting furnace: perpendicular, horizontal and irregular cracks.
- Spalling : means breaking loose due to factors such as lack of wrong stomping, wrong sintering and moisture containing.
- Erosion : means the lining thickness gradually decreasing due to chemical and physical factors.
- Build Up : means the accumulation of oxides of molten metal in the wall that has been lined.
- Refractories for cast iron
Item | SiO2 (%) | Al2O3 (%) | MgO (%) | TiO2 (%) | Other (%) | Other (%) | Highest use temperature(℃) | Density (g/cc) | Particle size (mesh) |
---|---|---|---|---|---|---|---|---|---|
MINRO-SIL RAM 1001 | 99.2 | 0.5 | - | - | - | 0.2 | 1650 | 2.15 | 6 |
MINRO-AL PLASTIC A76 | 24.0 | 70.2 | - | 0.7 | - | 0.1 | 1650 | 2.56 | 8 |
STEEL-PAK 90CR | 9.7 | 77.3 | 0.1 | 0.1 | Cr2O3 7.8 | 3.0 | 1760 | 2.93 | 4 |
COIL CEMENT A44 | 0.1 | 95.5 | - | - | - | 0.4 | 1815 | 2.72 | 14 |
- MINRO-SIL RAM 2001 1.5 BA
It is a silica based refractory designed for lining coreless induction furnaces and can be selected according to tapping temperature. It has long life time as it has no moisture and high purity.
- DRI VIBE 458S-CR BA
- MINRO-AL PLASTIC A76
- STEEL-PAK 90CR
- COIL CEMENT A44
- Ceramic cloth for induction furnaces
Item | Thickness | Package | Note |
---|---|---|---|
HW-WEAVE | 2.0 – 2.2mm | 25m/Roll, 50m/Roll | CERAMIC CLOTH |
- Self rotating refractory tamper for induction furnaces
MODEL NO.(DRFL) | Range of use(forms diameter) | Furnace capacity |
---|---|---|
0914 - 020 | Dia 220 - 360mm | 150 - 400kg |
1424 - 050 | Dia 350 - 600mm | 500 - 1500kg |
2232 - 050 | Dia 550 - 800mm | 1500 - 3000kg |
SP | special ordering specification | 5 ton or more |
- Mica sheet for induction furnaces