Steel melting & forged parts

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STEEL MELTING AND FORGINGS

Endowment for steel melting
Steel melting is completed in electric arc furnaces of 5 – 20 – 50 tons.
To ensure the liquid metal quality, the followings methods are used :
-treatment under vacuum by BV procedure ( ingot casting in vacuum or stream degasifying).
- in pot metallurgy ( argon bubbling ).
 Products range          
  A large range of steel grades can be obtained , intended to be used for the casting of parts or ingots , that will be forged or rolled out.
 Ingots for rolling out : 
 - polygonal ingots for forging, weighing from 9 to 140 tons.

Endowments for ingots forging :
-hydraulic press of 6000 tf  and  hydraulic press of 2500 tf
-bogie hearth heating furnaces of max 40 sqm
-bogie hearth heat treatment furnaces of max 63 sqm.for parts of
  max.13 m long.

Forged products range
- bars  from Ømin 160 to Ømax1500 and  
  lengths of max 13000 mm. 
- shafts  for energetics , mining , 
  shipbuilding industries , up to 60 ton weight.
- milling rolls with  weight of max 47 tons and diameters of max.1600 mm .
- rings with diameters of max 5000 mm and max 1000 mm width ;                                                                                       
- bushings with max diameters of 2250 mm and max 8000 mm length ;
- collars with max diameters of 2100 mm and max 3000 mm length .
Representative steel grades for forgings
 -carbon steels as per DIN 17100-SEW 550 ( St52.3;  St50.2; CK22; CK45; CK60 ), SR EN 10250-2 ( S355J2G3;  20Mn5; 28Mn6 );
 -quenching and tempering steels as per DIN 17200(SR EN 10250-3)  ( 34CrNiMo6; 34CrMo4; 42CrMo4; 30CrNiMo8 )
 -steels for milling rolls as per Internal Norms ( 65Mn Cr15; 65VMoCr15; 75MoCr11 )
 -steel for tools as per DIN 17350 ( 55NiCrMoV6; X210Cr12 )
International authorizations for forgings  with weight up to 60 tons as per LRS and GL.
 

 

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