J502
Description:
J506R is a low hydrogen potassium type pressure-sensitive adhesive coated carbon steel electrodes, AC and DC, all-position welding. Has good welding process performance, stable arc, less spatter, easy slag removal, the deposited metal has good mechanical properties and crack resistance, good low temperature impact toughness.
use:
For pressure vessels, pressure pipes and other medium-carbon steel and low alloy steel structure of the welding.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Ni | Cr | Mo | V |
standard value | ≤0.15 | ≤1.60 | ≤0.75 | ≤0.015 | ≤0.025 | ≤0.30 | ≤0.20 | ≤0.30 | ≤0.080 |
Example value | 0.078 | 0.96 | 0.54 | 0.007 | 0.013 | 0.008 | 0.028 | 0.007 | 0.004 |
Deposited metal mechanical properties
Pilot projects | Rm (N / mm 2 ) | Rel (N / mm 2 ) | A (%) | KV 2 (J) |
-30 ° C |
standard value | 490 ~ 610 | ≥400 | ≥22 | ≥54 |
Example value | 540 | 440 | 32 | 170 |
X-ray inspection:
Ⅰ level
Reference current (AC, DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 90 ~ 130 | 140 ~ 180 | 180 ~ 230 |
Precautions:
⒈ welding electrode to be baked by 350 ℃ 1h, with baking with the use.
⒉ weld before welding must be removed rust, oil, water and other impurities.
⒊ welding operation required to use a short arc to narrow the welding is appropriate.
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