GRIDUR SMG

IDENTIFICATION : GRIDUR SMG

CHARACTERISTICS :

A heavy coated basic type electrode predominantly siuted for tough and crack resistant joining and surfacing on parts of high Mn – steel subjected to extreme impact, compression and shock. The weld metal consists of about 14% Mn and 3.5% Nickel.The high Mn content in the weld produces a fully austenitic deposit which is highly work-hardening.


TYPICAL APPLICATIONS :

Dredger teeth, overlays on Manganese hardsteel, Excavator parts, bucket and teeth Mill hammers, crusher jaws, cones and beaters, Impeller bars, railway building machinery Building industry, quarries and mines for surfacing worn out parts.


WELDING INSTRUCTION :

  • Hold electrode as vertical as possible.
  • Welding should be done at low temperature
  • Interpass temperature should not exceed 2000C
  • It is therefore recommended to weld short beads and to allow to continuous cooling during welding or to place the work piece in a cold water bath with only welding area sticking out of the water

WELD METAL ANALYSIS (RANGE) % :

C Mn Si Ni S P
0.80-1.20 13-14.8 0.70-1.10 3.0-4.5 0.03 max 0.04 max

HARDNESS OF THE PURE WELD DEPOSIT :

1. As welded : 200-250 Brinell (HB)

2. After work hardening : 450-550 Brinell (HB)


PACKING SPECIFICATION AND CURRENT CONDITIONS :

SIZE (mm) LENGTH (mm) CURRENT (AMPS)AC (700cv)/DC (+) PCS PER CARTON/PCS PER BOX
3.15 450 110-140 100x4=400
4.00 450 150-180 65x4=260
5.00 450 180-220 45x4=180