NORTOP Topping Mixes

NORTOP™ topping products are ideal for protecting surface zones, such as the top section of an inductor or the side lining of a coreless induction furnace.

NORTOP™ products can be supplied as dry or humid products in line with customer installation requirements.

Specifications

Coreless Induction Furnace
Equipment Area Product Name Metal Chemical Analysis
    Iron (I), Steel (S), Copper/Brass (CB), Zinc (Zn), Aluminum (AL) Al2O3 
(%)
SiO2 
(%)
MgO
(%)
SiC
(%)
Topping NORTOP A 102 /
NORTOP A 402
I / S / CB / Zn / AL 91 5    
Topping NORTOP A 1211 I / S / CB / Zn / AL 82 13    
Topping NORTOP M 168 S 23 3 70  
Topping NORTOP M 179 S 23 1 72  
Topping NORTOP M 269 I / S 12 1 80  
Topping NORTOP S 146 I / S 69 0.5 28    
Inductor
Equipment Area Product Name Chemical Analysis
    MgO
(%)
SiC
(%)
Topping NORTOP A 102 / NORTOP A 402    
Topping NORTOP A 1211    
Topping

NORTOP M 269

80  
Topping NORTOP S 146 28  
Ladle and Other
Equipment Area Product Name Metal Chemical Analysis
    Iron (I), Steel (S), Copper/Brass (CB), Zinc (Zn), Aluminum (AL) Al2O3
(%)
SiO2
(%)
MgO
(%)
SiC
(%)
Topping NORTOP S 146 I / S 69 0.5 28    
Pouring Furnace
Equipment Area Product Name Chemical Analysis
    MgO
(%)
SiC
(%)
Topping NORTOP A 102 / NORTOP A 402    

FAQ

Which type of topping mix is best suited for steel melting in a coreless induction furnace?

NORTOP A 1211 is ideal for use in steel melting in coreless induction furnaces. It is successfully used as top cap mix by a significant number of customers. This topping mix’s enhanced performance results from its adjusted sodium silicate bonding system, which ensures that mechanical strength, thermal expansion and corrosion resistance are equal to the working lining for both scrap or DRI melting.

Documents

Brochures & Flyers
Foundry Iron & Steel - Brochure (French)

Saint-Gobain Foundry Solutions provide innovative solutions,
including refractory products and expertise regarding foundry
operations, covering iron

PDF | 15.1 MB
Foundry-Solutions-FR-EN-iron-and-steel-web-2354652
Brochures & Flyers
Foundry Iron & Steel - Brochure (German)

Foundry Solutions

PDF | 1.58 MB
Foundry-Solutions-DE-EN-iron---steel-web-235419