WELDING & CUTTING
India
 
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OK 93.66
 
High Temperature Chemical Inertness
OK Selectrode 93.66 deposits a highly crack resistant weld metal of Stellite Gr. 6 type. The electrode is characterized by its spatterless smooth arc and easy slag detachability. The weld metal has excellent resistance to friction, abrasion, impact, corrosion and oxidation and abrasion at high temperature. These features make it suitable for combined wear conditions. The alloy resists spalling due to thermal cycling and has good sliding properties.
 
ALLOY BASE
Cr, Co, C, W
 
SPECIAL FEATURES
  • Retains about 40 HRC hardness at 750°C
  • Only solution to complex wear system
  • Exceptional resistance to corrosion
APPLICATIONS
Hardfacing of parts subject to wear at elevated temperatures and also in corrosive environment like hot forging tools, hot shear blades and dies, cutting edges, grab tongs, hot punches, knives, chemical valve seats, steam ends, pump sleeves, wear pads, screw conveyors, etc. in chemical, petroleum and sugar industries and also in steel plants.
 
WELDING PROCEDURE
  • Clean weld area for oil, grease and other impurities
  • Preheat job wherever possible
  • Hold electrode perpendicular to work piece and weld in stringer beads
  • Maintain interpass temperature 300°C or lower
  • Cooling should be slow
PROPERTIES
Hardness : At 20°C As deposited : 39-42 HRC
    Work Hardened : 43-46 HRC
    At 750°C As deposited : 19-22 HRC
    Work Hardened : 38-43 HRC
 
CURRENT RANGE : (AC 70, DC+)
 
Size (mm) Length (mm) Current Range (Amp)
3.25 350 70-100
4.00 350 110-160
 
 
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