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NIHONWELD NC-NiCu-B
AWS Specification: E NiCu-B
JIS Specification:

None

Other Specification:

I. APPLICATIONS:

Filling up the cavities of various cast iron.

II. DESCRIPTION:

Basic-graphite special coated electrode with a NiCu-alloyed core wire. This electrode is particularly suitable for safe cold welding of grey cast iron, cast steel and malleable cast iron. The colour of the weld deposit is very similar to cast iron. Therefore, The electrode is primarily suitable for repairing casting or machining defects on new castings.

 III. NOTES ON USAGE:

Thoroughly clean the surface of the work-piece make sure it is exempt from grease (previous grinding). When welding cast iron, heat input should as low as possible (low amperage). The bead must not be wider than twice the core wire diameter and not be longer than ten times the core wire diameter. To limit internal stress of the base metal, peening of the beads is recommended after each pass.

In some cases preheating to 300°C and slow cooling is recommended. When welding on DC - the weld metal flows very neatly and produces a flat bead while beads welded on the positive pole are cambered, due to the high amount of weld metal deposed as a consequence of low heat input. The aspect of the weld produced with alternate current and the welding characteristics of the electrode are in between the results obtained on direct current.

 IV. TYPICAL CHEMICAL COMPOSITION OF WELD METAL (%):

C

Mn

Si

Cu

Ni

0.68

0.45

0.52

28.5

Bal.

V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL

Tensile Strength

N/mm2 (ksi)

Elongation

%

Hardness

HV (HRC)

168 (24)

18

140-160 (75-80 HRB)

VI. WELDING POSITIONS: ALL POSITION – EXCEPT VERTICAL DOWN

VII. SIZES AVAILABLE AND RECOMMENDED CURRENTS (AC or DC + ):

Size

(mm)

Dia.

2.5

3.2

4.0

Length

300

350

350

Current Range Amp

50-80

70~110

100~140

 

TEST RESULT

The information contained or otherwise referenced herein is presented only as “typical” without guarantee or warranty, and Industrial Welding Corporation expressly disclaims any liability incurred from any reliance thereon. Typical data and Test results for mechanical properties, deposit or electrode composition and other properties were obtained from a weld produced and tested according to prescribed standards, and should not be assumed to be the expected results in a particular application or weldment. Actual results will vary depending on many factors, including, but not limited to, weld procedure, plate chemistry and temperature, weldment design and fabrication methods. Users are cautioned to confirm by qualification testing, or other appropriate means, the suitability of any welding consumable and procedure before use in the intended application.