DAIKOWT 330Cu

GTAW
  • CAST IRON
NiFe-Cu

Description

Nickel-copper based rod for welding and repairing difficult-to-weld cast iron
Special Fe-Ni-Cu rod suitable for joining cast iron with steel and for repairing difficult-to-weld cast iron. The deposit, with a composition similar to a Monel alloy, ensures high strength and ductility, low melting point, and excellent electrical conductivity. The processing is straightforward. To avoid cracking, welding parameters must ensure surface fusion: excessive dilution of the base metal could compromise the integrity of the weld.
Specifications
EN ISO 18274
S Ni 4060
AWS A5.14
ER NiCu-7
Shielding
I1
Positions
PA, PB, PC, PD, PE, PF
Current
DC-
Packaging Type
5kg carton tube
Asme qualifications
F-No (QW432)
42
A-No (QW442)
-

Hardness

160HB - 180HB
Chem. Comp. %
DEFAULT
C
0.07
Mn
3.5
Ni
64
S
0.02
Si
0.8
Cu
30
Fe
1
Ti
0.9
Mechanical Properties
min
variant
Tensile strength Rm MPa
480*
520
Yield strength Rp0.2 MPa
0
320
Elongation A (L0=5d0) %
0
30
Impact Charpy ISO-V
-
-
Impact Charpy ISO-V
-
-
Welding Parameters
1.6 mm
2.4 mm
Ampere
80A - 120A
130A - 160A
Voltage
10V - 13V
14V - 18V
Packaging
-
-
Packaging Type
product.packaging_types.product.packaging_types.product.packaging_types.5 kg Kartonröhre
product.packaging_types.product.packaging_types.product.packaging_types.5 kg Kartonröhre
NiFe-Cu
Description

Application

The weld metal color exceptionally matches with cast iron, making it ideal for correcting casting defects on new components. It has a hardness of approximately 165 HBOK. The deposit can be made on both cold or slightly preheated materials. The weld metal offers excellent machinability characteristics. For castings with phosphorus contents higher than normal, around 0.20%, these materials are more effective compared to the ENi-CI classification. Practical experiences show that successful welds can be achieved on thick and highly constrained components, as well as on high-strength cast irons.

Alloy Type

Electrodi con rivestimento speciale basico-grafitico e anima in lega di nichel e rame.

Microstructure

La struttura dipende dalla composizione chimica e dalla velocità di solidificazione e successivo raffreddamento.

Materials

Utilizzato per le normali qualità di ghisa come le ghise grigie, duttili e malleabili e per unire pezzi di lavoro di vari tipi di ghisa, compresa la ghisa nodulare, e per saldarli all'acciaio e ad alcuni metalli base non ferrosi.

Welding & PWHT

Remove the fusion crust from the welding area by machining, grinding, chipping, or suitable methods. When repairing fusion defects, carefully remove defective metals from the base piece. Remove grease, oil, dirt, or foreign matter with suitable solvents. If the casting is oil or solvent-impregnated, apply heat until they evaporate; generally, 400 °C is sufficient. In cases of high grease presence, quickly heat the area to about 540 °C for elimination. The use of preheating is not always necessary but often preferable. Preheat to 200-350 °C, cool gradually post-welding, and maintain an interpass temperature between 350-450 °C to prevent cracking. In large castings, opting for intermittent welds can promote uniform temperature distribution, keeping the casting hot but not excessively so.

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