MH00Cr21Ni10T
Description:
The main component of the wire is ultra-low C-18Cr-8Ni. Equipped with JQ.SJ601 special sintered stainless steel flux, the deposited metal has good mechanical properties and resistance to intergranular corrosion resistance, crack resistance is good. Due to low carbon content, corrosion resistance is more excellent.
use:
Cryogenic series of stainless steel submerged arc welding wire mainly for the CNG (compressed natural gas), LNG (liquefied natural gas), LPG (liquefied petroleum gas) three fields of energy storage and transportation equipment used in cryogenic low temperature welding environment, good at -196 ℃ Stable low temperature impact performance.
Deposited metal chemical composition (%)
project | C | Mn | Si | Cr | Ni | P | S |
guarantee value | ≤0.03 | 1.00 ~ 2.50 | ≤0.60 | 19.50 ~ 22.00 | 9.00 ~ 11.00 | ≤0.030 | ≤0.020 |
Example value | 0.027 | 1.75 | 0.57 | 20.27 | 9.56 | 0.010 | 0.005 |
Deposited metal (with flux: JQ.SJ601) Chemical composition (%)
project | C | Mn | Si | Cr | Ni | P | S |
guarantee value | ≤0.04 | 0.50 ~ 2.50 | ≤1.00 | 18.0 ~ 21.0 | 9.0 ~ 11.0 | ≤0.040 | ≤0.030 |
Example value | 0.031 | 1.62 | 0.57 | 19.69 | 10.32 | 0.012 | 0.006 |
Deposited metal mechanical properties (with flux: JQ.SJ601)
experimental project | Rm (N / mm2) | ReL (N / mm2) | A (%) | KV2 (J) -196 ° C |
Example value | 662 | 315 | 42 | 45,44,36 |
Reference current (AC or DC +)
Diameter (mm) | 2.5 | 3.2 | 4.0 | 5.0 |
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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