GEMET 701DC

DESCRIPTION :

Electrodes for tin-bronzes and for surfacing.

CHARACTERISTICS :

A special basic coated electrode for welding and surfacing of copper, brass and bronze. Deposited weld metal is free from porosity. The weld bead is smooth uniform and slag is easy to remove.

APPLICATIONS :

  • Welding tin bronze (Phosphor bronzes).
  • Bell metal ( Cu + 20-25% Zn).
  • Brasses.
  • Manganese Bronzes, pump impellers.
  • For welding copper base alloys to themselves and to steels or cast irons.
  • To weld overlays shafts and engineering components to give a bearing surface and or corrosion resistant layer.

PROCEDURE :

Prepare large "V" approximately 80-90°. Preheat to 300°C to reduce sluggish behaviour of weld pool.

REDRY : Redry if moist at 250-300°C for 1-2 hrs.

HARDNESS : 70-90 Brinell

WELDING CURRENT : DC (+)

ALLOY BASIS : Cu, Sn, P


MECHANICAL PROPERTIES (RANGE) :

Tensile Strength Elongation (%) (L=4D)
250-350 20% approx.

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH AMPS AC/DC(+) PACKING / BOX (Kg)
2.50 350 60-90 2X5=10
3.15 350 75-120 2X5=10
4.00 350 100-160 2X5=10