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welding material for pipeline engineering->All->TY·SJ612 |
| TY·SJ612 |
Description:
TY·SJ612 is a kind of sintered flux specially developed for the flux-cored wire in use of nitrogen-containing Martensite build-up welding. It may replace Japan-made NB-70M flux. The raw materials of the flux have high purity and the content of S and P is lower than 0.02%,It possesses the following features:it has a good appearance of weld and a smooth and clean surface,without slag inclusions,without pores,and it has less loss of alloy elements,keeping the welding layers to have properties of erosion resistance,anti-ageing and abrasion resistance.
Usage:it may be used in the build-up welding fo high-temperature,thermal-cycle,heavy-duty conticaster rolls and hot-rolled folls.
Cautions:
1.The welding flux must be baked for 2 hours at the temperature of 300-350℃ before the build-up welding.
2.After the build-up welding, the used flux should be screened with 10-40 mesh screen to remove small slags and fine powder mixed into it, ensuring the quality of the build-up welding layers.
Chemical Composition of the Flux(%)
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SiO2+TiO2 |
CaF2 |
Al2O3+MnO |
Ca+Mg0 |
S |
P |
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15～20 |
15 |
20～30 |
30～40 |
≤0.02 |
≤0.02 |
Chemicalcomposition of surfacing layers when matching with 3Crl3 fluxcored wires(matching with DIAMOND323 welding wires)
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C |
Mn |
Si |
Cr |
Mo |
Ni |
Nb |
S |
P |
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0.25～0.4 |
1.2～1.5 |
≤0.6 |
11～13 |
0.9～1.2 |
2.0～3.0 |
0.2～0.4 |
≤0.03 |
≤0.04 |
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