H0Cr20Ni10Nb
Description:
The main component of the wire is 19Cr-11Ni-Nb, stainless steel TIG wire. Due to the addition of Nb on the basis of SUS308, it can effectively improve the corrosion resistance, especially to improve the resistance to grain boundary corrosion.
use:
Often used in food machinery, medical equipment, pressure vessels, petrochemical and other occasions, such as 07Cr19Ni11Ti (SUS 321), 07Cr18Ni11Nb (SUS 347) or similar components of austenitic stainless steel welding.
Wire chemical composition (%)
| C | Mn | Si | Cr | Ni | Mo | P | S | Cu | Nb |
guarantee value | ≤0.080 | 1.00 ~ 2.50 | 0.30 ~ 0.65 | 19.00 ~ 21.50 | 9.00 ~ 11.00 | ≤0.75 | ≤0.030 | ≤0.030 | ≤0.75 | 10 × C-1.00 |
Example value | 0.052 | 1.81 | 0.51 | 20.01 | 10.10 | 0.01 | 0.021 | 0.008 | 0.12 | 0.59 |
Reference current (DC + )
Diameter (mm) | φ 1.6 | φ 2.0 | φ 2.5 | φ 3.2 |
Welding current (A) | 50 ~ 100 | 100 ~ 200 | 200 ~ 300 | 300 ~ 400 |
Precautions:
1. Protective gas: pure Ar; flow: 9 ~ 14L / min at current of 100 ~ 200A and 14 ~ 18L / min at current of 200 ~ 300A.
2. Tungsten extension length: 3 ~ 5mm; arc length: 1 ~ 3mm.
3. Wind speed limit ≤1.0m / s; it is recommended to pass argon gas protection on the back of welding area.
4. In welding, the size of the welding wire energy directly affects the mechanical properties of the weld metal and crack resistance, should pay more attention.
5. Welding parts of the rust layer, moisture, oil, dust, etc. in addition to net.
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.
related articles
The number of clicks:Update time:2017/12/26 18:57:24【print this page】