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Surfacing

PP-Np-12H ( Np-12Cr )

Flux-cored wire is designed for open-arc, submerged-arc or gas-shielded hardfacing of parts exposed to an abrasive environment with extra risk of corrosion, at normal and increased temperatures (up to 450°C). 

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Additional Information
Diameter, mm 1.2 - 4.0
Curent type / Shielding DC+ / Open arc, flux, Ar, СО2, Ar + CO2
Working conditions Abrasive, corrosion at temperatures up to 450 °C
Applications

Hardfacing of continuous-casting machine rollers, sealing surfaces of gas, oil, and general purpose industrial fittings operating at temperatures up to 450 °C
Recommended flux  EFA-1, АN-26S/P, АN-20S/P
Slag separation good
Deposit factor, g/A·h 10 - 18
Crack susceptibility moderate
Wire consumption, kg 1.05 - 1.2
Hardness of weld metall HRC 28 - 47

OPERATING CONDITIONS (submerged arc)

Wire diameter, mm

Current, A

Voltage, V

Deposition rate, m/h

1.6

150 – 230

27 – 29

8 – 15

2.0

180 – 280

29 – 31

10 – 18

2.4

220 – 320

30 – 32

13 – 20

2.8

260 – 380

31 – 33

14 – 22

3.2

300 – 430

32 – 34

15 – 25
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