Valve Steels


 
Valve Steels, High Speed Steels, Tool, Alloy Steels, and Powder Metallurgy Steels are manufactured by GKW in its Powmex Steels Division, located at Titilagarh, in Bolangir district in the state of Orissa.
 
The Division is accessible by:

Ø      road - 250 Kms from Raipur airport (Capital of Chhatisgarh)
Ø      rail – from all major cities in India.
Major Plant and Equipment includes:

 Production
·         8 MT GEC Alsthom electric arc furnace
·         GFM, Austria Long Forging Machine
·         9 Stand Rolling Mill
·         Holding, Re-heating, Pre-heating and Annealing Furnaces
·         Peeling, cold drawing and centerless grinding machines
·         Nitrogen Plant
·         2MT Induction Furnace
 
The Division also has:
 		 ·         Powder Metallurgy Plant
Inspection
 		     

·         Sophisticated laboratory for chemical analysis and metallurgical testing

·         Metallurgical Microscope, spectrometer, hardness tester

·         Ultrasonic equipment for non-destructive testing

·         Precision measuring instruments for checking dimensions

      ·         ISO 9000 certification by TUV, Germany

 




Computerised Test Centre
   


Product Specifications

     ·         Valve Steel
            -   En52
            -   SUH3
            -   21-4N

·         DIN

·         ASTM

·         AISI

VALVE STEELS
Chemical Composition (average values in %)
Grade

     C

   Si

 Mn

     P

      S

     Cr

  Mo

   Ni

     N
 EN52 0.40
0.50		 2.70
3.30		 0.80
MAX 		 0.04 
MAX		 0.03
MAX		   8.00
10.00

-
-

-
-

 -
-
 SUH3 0.35
0.45		 1.80
2.50		 0.60
MAX 		 0.04 
MAX		 0.04
MAX		 10.00
12.00

0.70
1.30

-
-

 -
-
 21-4N 0.48
0.58		 0.25
MAX		 8.0
  10 		 0.05 
MAX		 0.035
MAX		 20.00
23.00

-
-

 3.25
4.50		 0.38
0.55
   
       
Size Range and Condition for all grades of Bars and Rods
Valve Steel
                        Condition  

Size Range
        Bars and Rods:    
        Hot Rolled, Annealed and Centreless ground(CG) :

     7 mm to 13.50 mm
        Hot Rolled Annealed  (HRA) : 8 mm to 56 mm
        Length : for all grades    
        upto 56 mm dia 2-4 metres 10% shorts down to 1.5 metre
     
 

Specific customer requirements for different grades and chemical composition can be supplied on request.
 

Applications

·         Steel for IC Engine Valves for Rail Road, Marine, Standby Generators and Prime Movers
 

Manpower

    ·         Technicians trained at Böhler, Austria
    ·         Competent and Knowledgeable team of Engineers and Managers

Customer Profile

     ·         Powmex sells to all major producers of IC Engine Valves in India and abroad:
        - Rane Engine Valves, Sriram Piston & Rings

Plant Highlights

     ·         Largest manufacturer of High Speed Steels in India
     ·         Capacity of 6750T per annum
     ·         Commenced production in 1992 with technical expertise from Böhler
     ·         Valve Steels being manufactured by
            - conventional ingot route

The following pages give a pictorial view of the capabilities and facilities