Continuous Casting Powders and Granules Refractory Materials Iron and steel smelting
Product introduction
The Mould Powders are composed essentially of CaO-Al2O3-SiO2 with addition of fluxing agents and carbon.
Mold Powders have different functions:
- Lubrication between the solidifying strand and mould wall
- Control of heat transfer between the strand and mould
- Thermal insulation of the liquid steel surface
- Prevention of re-oxidation
- Inclusion absorption
The above functions are controlled by the following properties:
- Basicity
- Viscosity
- Melting speed
- Melting behaviour
- Crystallization
The choice of a mould powder depends on:
- Mould size
- Oscillation conditions
- Casting speed
- Steel grade
