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VOLTAWELD V-CuNi

AWS Specification: ECuNi
JIS Specification: NONE
Other Specification:

DESCRIPTION

V-CuNi is a DC arc welding electrode which gives 70% Cu-30% Ni Cupro-nickel.  The weld metal shows good corrosion resistant fatigue.  Therefore it is suitable for joining and build-up welding of heat exchangers, distillers, chemical industry equipments and etc.

APPLICATIONS

Welding of cupro-nickel clad steel.  Build-up welding carbon steel.  Welding  of similar and dissimilar metals such as various copper alloys.

INSTRUCTION FOR WELDING

(1)     Use DC reverse polarity (DC+) current.

(2)     Preheating is not necessary and avoid continuous welding, keep the interpass temperature under 100ºC.

(3)     The arc length should be short as possible and adopt straight bead method.

(4)     It is necessary no to use excessive current in order to prevent the dilution from base metal for build-up welding of carbon steel.

(5)     Dry the electrodes at 200-250ºC for 30-60 minutes before use.

TYPICAL ANALYSIS OF ALL WELD DEPOSIT:

C

Si

Mn

Fe

Ni

Mo

Cu

 

 

-

0.26

1.15

0.65

30.22

-

Bal

 

 

 

TYPICAL ALL WELD MECHANICAL PROPERTIES:

Yield Point

N/mm2 (Ksi)

Tensile Strength

N/mm2 (Ksi)

Elongation

%

Impact Value

Deg C, J (Deg F, Ft-lbs)

327 (47)

425 (62)

38

NA

RECCOMMENDED CURRENTS: Ampere (DC+)

Size

Dia

3.2

4.0

5.0

(mm)

Length

350

350

350

Current

Range

Flat

70-110

100-150

130-180

Vertical & OH

65-105

95-140

-

WELDING POSITIONS:

FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD

Packing: in 5Kg plastic container, then 4 5kg containers in master carton box

Other special requests for packing such as big spools or the like can be accommodated.

 

 

HEADQUARTERS Syracuse, New York Tel. (966) 399-3414