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welding flux->Sintered Welding Fluxes->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(%)
SiO2+TiO2
CaF2
Al2O3+MnO
Ca+Mg0
S
P
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)

C
Mn
Si
Cr
Mo
Ni
Nb
S
P
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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