Description:
W907Ni is a low-hydrogen sodium drug-containing Ni low temperature steel electrode, DC reverse, all-position welding. Deposited metal at -90 ℃ still has good impact toughness.
use:
Welded -90 ℃ low temperature 3.5Ni low alloy steel structure used.
Deposited metal chemical composition (%)
C | Mn | Si | S | P | Ni | |
guarantee value | ≤0.12 | ≤1.25 | ≤0.60 | ≤0.035 | ≤0.035 | 3.00 ~ 3.75 |
Deposited metal mechanical properties (620 ℃ × 1h)
Pilot projects | Rm (N / mm 2 ) | ReL / Rp 0.2 (N / mm 2 ) | A (%) | KV 2 (J) |
-90 ° C | ||||
guarantee value | ≥550 | ≥460 | ≥17 | ≥27 |
X-ray inspection:
I level
Reference current (DC + )
Electrode diameter (mm) | φ2.0 | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 40 ~ 70 | 60 ~ 90 | 90 ~ 120 | 140 ~ 180 | 170 ~ 210 |
Precautions:
1. Before welding electrode to be 350 ~ 400 ℃ baking 1.5h, with the baking with the use.
2. Welder before welding must be about 150 ℃ preheating to prevent cracks.
3. If the weldment to clear stress, can be welded after the 600 ~ 650 ℃ tempering.
在线客服 |
|---|
|
产品咨询  |
中文 
English