Page 156 - Technical Guidbook - Zika industrial Welding Supplies

Z-2010 GREY CASTINGS JOINING & SURFACING Z- 2700
Especially suitable for dirty With Bronze Electrode
castings

Description: Description:
A pure nickel core wire electrode for welding lamellar malleable and nodular grey Electrode for joining, and surfacing copper tin alloys and for weld claddings on cast
cast iron for welding cast iron to steel. iron and steel .the welding material has good ductility and resistance to metal-on-
Weld deposit is machineable metal friction.
Especially suitable for dirty castings. Uses:
Uses For repairs of: • Pumps.
• Motors. • Castings.
• Gears. • Valve sockets.
• Cars. • Blades.
• Casting defects. • Gears.
• For filling holes, joining parts and welding areas where machining is performed
after welding. Welding position:
Technique and Recommendations:
Clean the welding area by grinding. If the welding area was contaminated by oil heat
the area until it turns red. ASME: 1G 2F
To open cracks use Z-2001 gouging electrode. ISO 6947 PA PB
To reduce the danger of new crack, if possible weld a layer of the weld deposit on
both sides of the parts you want to join and then join the parts by welding on the Mechanical Properties:
welded layers. Tensile strength: 300 N/mm²
Try to reduce to minimum the heat input by using low amperage and welding short Hardness: 150HB
stringer weld beads approx. 50mm length. Elongation: 25%
Remove the slag immediately after welding and peen the deposit to release the
stress. Re-drying
Reignite on the weld and not on the base metal. 1h/250ºC
Welding position: Mechanical Properties:
Tensile strength: 300 N/mm²
Hardness: 170HB
Elongation: 5%
ASME: 1G 2F 2G 3G 4G
ISO 6947 PA PB PC PF PE Re-drying
1h/50ºC
Current Diameter Types of
)Amps( in mm Current and Polarity Current Diameter Types of
50-80 3/32 2.5 )Amps( in mm Current and Polarity
AC
80-110 1/8 3.25 40-65 3/32 2.5
DC )+(
110-150 5/32 4.0 70-100 1/8 3.25 DC )+(
120V min O.C.V
150-190 3/16 5.0 120-160 5/32 4.0
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