J507NiCu
Description:
J557 is a low hydrogen sodium type low alloy steel electrode, the use of DC reverse. All-position welding.
use:
Suitable for welding carbon steel and 15MnTi, 15MnV and other low-alloy steel structure.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P |
guarantee value | ≤0.12 | ≤1.60 | ≤0.90 | ≤0.030 | ≤0.030 |
Example value | 0.074 | 1.32 | 0.50 | 0.007 | 0.015 |
Deposited metal mechanical properties (620 ℃ X1h)
Pilot projects | Rm (N / mm 2 ) | ReL / Rp 0.2 (N / mm 2 ) | A (%) | KV 2 (J) -30 ° C |
guarantee value | ≥550 | ≥460 | ≥17 | ≥27 |
Example value | 585 | 485 | 28 | 120 |
X-ray inspection:
I level
Reference current (DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 80 ~ 140 | 110 ~ 210 | 160 ~ 230 |
Precautions:
1. Welding before the electrode to be about 350 ~ 400 ℃ baking 1h, with the use of take.
2. Welding before welding parts must be removed rust, oil, water and so on.
3. When welding to be used to operate a short arc to narrow the weld is appropriate.
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