J807RH
Description:
J607 low hydrogen sodium type of low alloy high strength electrode, using DC reverse.
use:
For welding carbon steel and the corresponding strength of low-alloy high-strength steel structure, such as 15MnVN and other steel.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Mo |
guarantee value | ≤0.12 | 1.25 ~ 1.75 | ≤0.60 | ≤0.035 | ≤0.035 | 0.25 ~ 0.45 |
Example value | 0.059 | 1.38 | 0.47 | 0.006 | 0.014 | 0.35 |
Deposited metal mechanical properties (620 ℃ × 1h)
Pilot projects | Rm (N / mm 2 ) | ReL / Rp 0.2 (N / mm 2 ) | A (%) | KV 2 (J) |
-30 ° C |
guarantee value | ≥590 | ≥490 | ≥15 | ≥27 |
Example value | 640 | 545 | 25 | 110 |
Deposited metal diffusion hydrogen content: ≤ 4.0ml / 100g
X-ray detection: 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. Before welding electrode to be about 350 ~ 400 ℃ baking 1h, on the 100 ~ 150 ℃ incubator, with the use of take.
2. Welder should be removed before welding rust, oil, water and other impurities.
3 welding must be used to operate short arc welding is appropriate.
4. Welding thick, should be preheated above 150 ℃, slow cooling after welding.
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