Saint-Gobain’s latest Norflow® castable product line provides engineered solutions to our customers that require help running their installations more efficiently.
Norflow® products are castables that are designed to be installed without using any installation tools, e.g. vibrator, as the products are self-flowing. It is sufficient to prepare the mix and pour it into the mold or area, and the product will flow in all zones automatically.
Self-flow castables are essentially characterized by their fluidity, their low segregation and bleeding, their ability to pumping, and their sufficient workability time. They can be installed either traditionally with a bucket or with a pump. The formulation of self-flowing castables is based on three principles and criteria:
Just like conventional castables, self-flowing castables can be combined with PP or PVC fibers to improve drying kinetics and limit the risk of spalling during initial heat-up. The use of reinforcement steel fibers is also possible without altering the self-flowing capability, when special tensile strength of resistance to cracking is required.
Norflow® products are suitable for installation of coil coat, ladle, launder and tundish lining as well as furnace linings.
Norflow® products are showing performances at least equivalent to their standard castable versions. Their optimized design and specific admixtures lead to low water demand, superior strength development and finer porosity. That results in outstanding wear resistance and stability against chemical attack.
The Norflow® product family contains special versions specially adapted to be used in iron, steel or non-ferrous melting operations.
The images below compare the flow properties of standard castables mix (left) and Norflow® (right). Both samples have the same weight, grain size distribution and water content. Norflow spreads more, consequently, self-flowing property is much more developed.
Norflow® versions are available for most of our existing castables.
|Al203 (%)||SiO2||Maximum Tuse (°C)|
|Coil Lining||Norflow® A337||90||1||1760|
|Working Lining||Norflow® A1007||77||5||1750|