MH0Cr20Ni10Nb
Description:
The main component of wire is 19Cr-11Ni-Nb. Equipped with pressure-bearing stainless steel smelting equipment JQ.SJ601, the deposited metal has good mechanical properties, crack resistance, anti-intergranular corrosion resistance. Due to the addition of Nb, can effectively improve the corrosion resistance, especially to improve the resistance to grain boundary corrosion.
use:
Often used in pressure equipment, food machinery, medical equipment, petrochemical and other occasions, such as 07Cr19Ni11Ti (SUS 321), 07Cr18Ni11Nb (SUS 347) and other materials welding.
Wire chemical composition (%)
| C | Mn | Si | Cr | Ni | P | S | Nb |
guarantee value | ≤0.080 | 1.00 ~ 2.50 | ≤0.60 | 19.00 ~ 21.50 | 9.00 ~ 11.00 | ≤0.030 | ≤ 0.010 | 10 × C-1.00 |
Example value | 0.052 | 1.70 | 0.52 | 19.10 | 9.52 | 0.018 | 0.006 | 0.60 |
Deposited metal chemical composition (with pressure JQ.SJ601) (%)
| C | Mn | Si | Cr | Ni | Mo | P | S |
guarantee value | ≤0.08 | 0.50 ~ 2.50 | ≤1.00 | 18.0 ~ 21.0 | 9.0 ~ 11.0 | - | ≤0.030 | ≤0.020 |
Example value | 0.032 | 1.28 | 0.49 | 19.20 | 10.42 | 0.021 | 0.017 | 0.011 |
Deposited metal mechanical properties (with pressure JQ.SJ601)
experimental project | Rm (N / mm 2 ) | A (%) | With flux |
guarantee value | ≥520 | ≥25 | JQ.SJ601 |
Example value | 575 | 36 | JQ.SJ601 |
Reference current (AC, DC + )
Diameter (mm) | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 400 ~ 500 | 450 ~ 550 | 500 ~ 600 | 550 ~ 650 |
Precautions:
1. Welding temperature between the proposed control at about 150 ℃. Small and medium size multi-channel multi-layer welding, pay attention to control the welding line energy.
2. Welding parts of the rust layer, moisture, oil, dust, etc. really want to clean up.
3 flux before use to be 300 ~ 350 ℃ baking 2h.
The above suggestions are for reference only, in the specific operation to the scene prevail. If necessary, process assessment and then determine the welding program.
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