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Cast Iron Welding Electrodes

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haracteristics and Applications:

ENiFe-CI is a covered electrode of Fe-Ni alloy core rod with graphite coating. The weld metal provides low expansion coefficient, less hardening and good machining property. It is suitable for ductile cast iron, malleable cast iron and gray cast iron. Satisfied performance can be obtained in the welding of large or high-restraint workpiece. The toughness is higher than that of T-Cast100.

Notes on usage:

1. Clean up the contaminations on the base metal and welding seam so as not to derogate the weld metal quality from crack and porosity.

2. Heat the welding portion to fully evaporate oil, liquor or solvent on it, normally the temperature is at around 400~500℃.

3. Maintaining short arc length as possible is highly recommended. While welding with weave method, moving range should be controlled within 3 times of the wire`s dia.

4. Use intermittent weld and keep arc length short (not longer than 3") or the prolonged heating might cause crack on joint edge. Symmetrical intermittent weld should be applied to multi-layer welding so as to balance the heat stress.

5. Pre-heating and slow cool-down is sometimes required, according to the metal`s type, shape

and size.

6. To alleviate shrinking stress, proceed peening on and off at the temperature above 540℃ after welding to prevent crack or distortion.

.Typical chemical composition of weld metal (wt%):

C

Mn

Si

P

S

Ni

0.80

0.40

0.80

0.01

0.002

53.0

Welding position:

Sizes and recommended current range (AC or DC<+>):

Diameter(mm)

2.6

3.2

4

Length(mm)

300

350

350

Amps

60-80

70-120

100-150

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