WELDING & CUTTING
India
 
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TERROWELD MN
 
Low Heat Build-up on Manganese Steel
This is a low heat input electrode suitable for surfacing, building up and joining of austenitic manganese steels of plain & alloy types. The austenitic deposit is more resistant to cracking, deformation and heat embrittlement. The deposit is tough to witbstand metal to metal impact. It resists wear under rolling abrasion at high contact pressures.
 
ALLOY BASE
Fe, C, Mn, Ni
 
SPECIAL FEATURES
  • Graphite free coating avoids carbon pick-up
  • Deposit gives high strength, combined with excellent resistance against impact
  • Smooth are, fine ripples and a fluid but controlled slag, which is easily detachable
APPLICATIONS
Manganese steel shovel bucket teeth & lips, pulverizing hammers, beaters, grinding ring & rollers, gyratory crusher mantle and liners, cone and ring, jaw crusher plates etc.
 
PROPERTIES
Hardness : As deposited : 22-24 HRC
    Work hardened : 42-45 HRC
 
WELDING PROCEDURE
  • 14% Mn steel should never be preheated for welding
  • Welding should be done in stringer beads directing the towards the weld pool
  • Heat input to the base metal should be kept minimum, if required skip welding/back step welding can be adopted
  • The weld bead must be peened with ball pen hammer immediately after welding
  • Quenching has no adverse effect on welding and should be adopted whenever possible after slag removal and peening. If possible the Mn steel job can be submerged in water during welding
CURRENT RANGE : (AC 70, DC+/-)
 
Size (mm) Length (mm) Current Range (Amp)
3.15 450 80-100
4.00 450 110-160
5.00 450 180-225
 
 
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