Instruction and Application: Titanium calcium type double - phase stainless steel with good welding process performance, good slag removal and small splash, good thermal cracking, corrosion resistance and stress corrosion cracking. Alternating current and dc. For welding of double phase stainless steel of Marine oil, natural gas and petrochemical industry, such as 00Cr25Ni7Mo4.
Typical Chemical Composition of the all-weld metal (％)
|
C |
Si |
Mn |
S |
P |
Cr |
Ni |
Mo |
N |
|
0.025 |
0.68 |
1.03 |
0.003 |
0.011 |
24.50 |
9.80 |
3.97 |
0.22 |
Mechanical properties of all-weld metal
|
Temperature |
Tensile strength Rm(MPa) |
Elongation A(%) |
Bending Test (GB/T 2653) |
|
Room temperature |
820 |
22 |
No Cracks |
All-welded metal radio graphic testing:
According to NB/T 47013.2, the radio graphic testing should not be less than class AB and the quality grade of all-welded metal should not be less than Class I at least.
Reference Current(DC+):
|
Electrodes Sizeφ（mm) |
Φ2.5 |
Φ3.2 |
Φ4.0 |
Φ5.0 |
|
Amperage (A) |
60-90 |
90-120 |
120-160 |
170-210 |
Notice:
1.The electrode with titanium-calcium coating must be stoved at 200-300℃ for 1 hours prior to use.
2.The welding consumables surface rust, oil fouling and other impurities must be cleaned up.
3.The welding slag must be cleaned up in the multi-pass welding. The inter-pass temperature should be controlled below 150 ℃.
上一篇：E2209-17
下一篇：E310-16(A402)
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