J557RH
Description:
J606 low-hydrogen-type drug-coated low-alloy high-strength steel electrode, AC and DC, AC welding, the performance is stable, a little after the DC welding.
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 | 0.075 | 1.33 | 0.25 | 0.006 | 0.015 | 0.4 |
Deposited metal mechanical properties (740 ℃ × 2.5h)
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 | 660 | 570 | twenty four | 75 |
Deposited metal diffusion hydrogen content: ≤ 4.0ml / 100g (glycerol method)
X-ray detection: I level
Reference current (AC, DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 80 ~ 140 | 110 ~ 210 | 160 ~ 230 |
Precautions:
⒈ welding electrode to be about 350 ℃ baking 1h, with the baking with the use.
2. Welder should be removed before welding rust, oil, water and other impurities.
3. Welding with short arc operation, narrow channel is appropriate.
4. Welding thick, should be preheated above 150 ℃, slow cooling after welding.
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