Introduction:HBW550-NQ-II is a kind of high-strength weathering resistant steel copper-plated welding wire and adopts rich argon gas protection. Because the weld seam has quite high toughness and atmospheric corrosion resistant capability, it is the welding wire specially used for locomotives.
Application: It is mainly applied to welding of 550 to 600MPa-class low alloy (for example, Q450NQR1, Q500NQR1, 15MnCuCrQ, etc.) weathering resistant steel in locomotives, containers, bridges, etc.
Chemical Compositions of Welding Wire：%
| - |
C
|
Mn
|
Si
|
P
|
S
|
Ni
|
Cr
|
Cu
|
|
Example Value
|
0.07
|
1.42
|
0.47
|
0.013
|
0.011
|
0.40
|
0.67
|
0.31
|
|
Range
|
≤0.10
|
1.20~1.60
|
≤0.60
|
≤0.025
|
≤0.020
|
0.20~0.60
|
0.30~0.90
|
0.20~0.50
|
Note: The copper in the welding wire is the summation of the copper in the copper coating and the self-contained copper.
Fused Metal Mechanical Property：
| - |
Tensile Strength
Rm(MPa)
|
Yield Strength
（MPa）Rp0.2
|
Elongation Rate
A(%)
|
Ballistic Work
-40℃ AKV(J)
|
Protective Gas
|
|
Example Value
|
631
|
529
|
26
|
87
|
rich argon
|
|
Range
|
≥550
|
≥450
|
≥22
|
≥60
|
- |
Welding Process：
|
Welding Wire Diameter
|
Wire Feeding Speed（mm/s）
|
Electric Arc Voltage（V）
|
Welding Current ( A)
|
Polarity
|
Distance Between Electrode Tip and Workpiece ( mm)
|
Welding Speed （mm/s）
|
|
1.2
|
190±10
|
27~32
|
260~290
|
DC+
|
19±3
|
5.5±1.0
|
|
1.6
|
100±5
|
25~30
|
330~360
|
DC+
|
22±3
|
5.5±1.0
|
|
Note: 1. Welding wires of other specifications can refer to the standards, and proper changes may be required according to actual needs; 2. While welding, the use performance of welding wires and the mechanical property of fused metal will be affected if it is off the standards. |
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Packing: 15kg/spool
