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| VVEL | BEC Strips Ltd | Nagpur Fabriforge (P) Ltd | Bharat Industrial Works |

Vishva Vishal Engineering Limited

   
| Basic Ramming Monolithics | Trough / Runner Mass | Low Cement Castables |
| High Alumina Castables | Well Filler Mix | Precast Refractory Shapes |
| Continuous Casting Refractories | About VVEL |

 
Continous Casting Refractories 


    SUB ENTRY NOZZLE

 

SEN SLAB

SUB ENTRY NOZZLE

 

Special Features
  • Design & Size as per Customer's Requirement.
  • Can be used either with Tundish Nozzle or Slide Gate System.
  • Reinforced with special material in Powder Zone to withstand long duration of Casting.
  • Gas Purging facilities to prevent Alumina clogging (Optional).
Uses
The Sub-Merged Entry Nozzle is used to prevent air contact of liquid steel during pouring from Tundish to Mould.
  • To minimize turbulence of Steel Stream
  • To reduce air infiltration & secondary oxidation
  • To suspend the non-metallic inclusion over metal - Slag Interface
  • To arrest the temperature drop during pouring of steel from Tundish to Mould

 

TYPICAL FORMULATIONS OF SUB ENTRY NOZZLE
  Seat Body Slag Zone Sleeve Bottom
Steel Grades Refractory Grades
VB6 VB8 VB11Y VB14 VB15 VB16 VB17 VE1 VB11Y VE3 VE3 VE7 VE9 VE7 VE9 VE3 VB11Y
Plain carbon   Ö           Ö     Ö Ö Ö Ö Ö Ö  
Normal Grades     Ö         Ö     Ö Ö Ö Ö Ö Ö  
Aluminium Killed   Ö Ö         Ö Ö Ö   Ö Ö Ö Ö   Ö
Calcium Treated Ö     Ö Ö Ö Ö Ö Ö   Ö Ö Ö Ö Ö   Ö
Stainless Ö Ö Ö Ö Ö Ö Ö Ö Ö   Ö Ö Ö Ö Ö Ö  
High Manganese Ö Ö           Ö Ö Ö Ö Ö Ö Ö Ö Ö Ö
Chemical Analysis (%)
Al2O3 (Min.) 78 75  55     5   40

55

 64 64         64 55
SiO2 (Max.) 5 6  6 1 1 1 14 26 6 3 3         3 6
MgO (Min.)       76 76 70  65                    
ZrO2 (Min.)      4   0.25        4     80 80 80 80   4
C (Min.) 17 17 20 17 17 21 14 25 20 21 21 14 14 14 14 21 20
SiC (Min.)               5   5 5         5  
Physical Properties
A.P (%) Max. 15 15 15 17 17 17 17 15 15 15 15 15 15 15 15 15 15
B.D (gm/cc) Min. 2.65 2.65 2.55 2.55 2.55 2.50 2.45 2.28 2.55 2.52 2.52 3.72 3.70 3.72 3.70 2.52 2.55
C.C.S (kg/CM2) Min. 225 225 200 225 225 200 200 180 200 180 180 225 200 225 200 180 200

Revised April 15, 2004
 

    TUNDISH NOZZLE

  

Special Features
  • Design & size as per customer's requirement.
  • Highly Densed & Erosion Resistant to withstand long sequence.
  • Clogging free casting for long sequence
  • Anti Oxidation properties.
Uses
It is used in the Tundish & helps to connect / control the liquid metal flow in between MBS & SEN.

TUNDISH NOZZLE

 

TYPICAL FORMULATIONS OF TUNDISH NOZZLE
Steel Grades Refractory Grades
  VB8
Plain carbon Ö
Normal Grades Ö
Aluminium Killed Ö
Calcium Treated Ö
Stainless Ö
High Manganese Ö
Chemical Analysis (%)
Al2O3 (Min.) 75
SiO2 (Max.) 6
MgO (min.)  
ZrO2 (min.)  
C (Min.) 17
SiC (min.)   
Physical Properties
A.P (%) Max. 15
B.D (gm/cc) Min. 2.65
C.C.S (kg/cm2) Min. 225

 

    MONO BLOCK STOPPER

  

MONO BLOCK STOPPER

METALLIC INSERT TYPE MBS

 

Special features
  • Wide range of designs & sizes to suit various customer's requirement.
  • Different assembly methods for assured security even in long sequence.
  • Re-inforced tip area to give longer sequence and multiple heats.
  • Facilities for gas purging.
  • Wide range of formulations for withstanding oxidation and long sequence casting.
Uses
The Mono Block Stopper serves as Shut-off and control device to regulate the molten stream from Tundish to Mould.

 

TYPICAL FORMULATIONS OF MONOBLOCK STOPPER
Steel Grades Body Tip
Refractory Grades
VB1 VB11 VB11Y VB6 VB8 VB11Y VB14 VB15 VB16 VB17
Plain carbon Ö Ö     Ö          
Normal Grades Ö Ö Ö     Ö        
Aluminium Killed Ö   Ö   Ö Ö        
Calcium Treated Ö     Ö     Ö Ö Ö Ö
Stainless Ö Ö Ö Ö Ö Ö Ö Ö Ö Ö
High Manganese Ö     Ö Ö          
Chemical Analysis (%)
Al2O3 (Min.) 48 60 55 78 75  55     5  
SiO2 (Max.) 16 6 6 5 6  6 1 1 1 14
MgO (Min.)             76 76 70  65
ZrO2 (Min.)      4      4   0.25    
C (Min.) 35 22 20 17 17 20 17 17 21 14
SiC (min.)                    
Physical Properties
A.P (%) Max. 15 16 15 15 15 15 17 17 17 17
B.D (gm/cc) Min. 2.32 2.50 2.55 2.65 2.65 2.55 2.55 2.55 2.50 2.45
C.C.S (kg/cm2) Min. 180 225 200 225 225 200 225 225 200 200

Revised April 15, 2004

    SHROUD

  

SHROUD WITH OUTER 
ARGON PURGING		 SHROUD

 

Special features
  • Design & Size as per Customer's Requirement.
  • Slag Zone / Immersed part reinforcement with special material for long life.
  • Argon sealing / Purging arrangement can be provided on customer's request.
  • Extra strength to bear the hazards of excessive handling at high temperature.
Uses
The ladle shroud protects the liquid metal in coming contact with oxygen during pouring from ladle to tundish.

It delivers the liquid steel stream below the slag / steel interface in the Tundish.


TYPICAL FORMULATIONS OF LADLE SHROUD
Steel Grades Refractory Grades
VD1 VD2 VD3
Plain carbon Ö Ö  
Normal Grades Ö Ö  
Aluminium Killed Ö Ö  
Calcium Treated Ö   Ö
Stainless Ö Ö Ö
High Manganese Ö   Ö
Chemical Analysis (%)
Al2O3 (Min.) 45 42 52
SiO2 (Max.) 15 26 10
MgO (min.)      
ZrO2 (min.)      
C (Min.) 33 28 33
SiC (min.)      
Physical Properties
A.P (%) Max. 15 15 14
B.D (gm/cc) Min. 2.38 2.28 2.40
C.C.S (kg/cm2) Min. 180 180 200

Revised April 15, 2004

    TAP HOLE SLEEVE FOR CONVERTERS

 

 

TYPICAL FORMULATIONS OF TAP HOLE SLEEVE FOR CONVERTERS
Steel Grades Refractory Grades
  THS-2 THS-7
Plain carbon Ö  
Normal Grades Ö Ö
Aluminium Killed   Ö
Calcium Treated Ö  
Stainless Ö Ö
High Manganese   Ö
Chemical Analysis (%)
Al2O3 (Min.)    
SiO2 (Max.)    
MgO (min.)  88  81
ZrO2 (min.)    
C (Min.) 8 15
SiC (min.)    
Physical Properties
A.P (%) Max. 3 3.5
B.D (gm/cc) Min. 2.9 2.87
C.C.S (kg/cm2) Min. 450 350

 

 

 
  

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