AK-S100A/ AK-AF100SD
Standard:
EN ISO ——
AWS ——
GB/T ——
Characteristics and applications: AK-S100A is a submerged arc welding wire for low alloy high strength steel, AK-AF100SD is a fluorine-base type sintered flux, basicity about 1.8. The combination of AK-S100A and AK-AF100SD has the advantages of good welding technology, stable arc, easy slag removal and good low temperature impact toughness and crack resistance of deposited metal. Suitable for B950CF high strength steel structure and pressure pipe welding, mainly used in Baosteel B950CF steel welding operations, but also used in other fields such as strength level welding operations.
Note:
1. before the use of flux must be 300 ~ 350 ° C baking 1 ~ 2 hours, welding wire should be dry before use, no oil, Rust State
2. welding should be strictly removed before the welding oil, rust, moisture and other impurities,
3. When Welding, preheat 100 ~ 200 ° C (depending on plate thickness and material) .
4. Recommended welding specification (taking Φ4.0 wire as an example) I = 500 ~ 550A, U= 28 ~ 32V, welding speed V = 30 ~ 50cm/min, inter-pass temperature 150 ~ 180 ° C.
5. After welding, it needs 200 ~ 250 ° C heat preservation for 2 ~ 4 hours to remove hydrogen.
Flux Quality Requirements:
1. Flux Water Content ≤0.10%
2. Mechanical inclusions ≤0.30.
3. Sulfur content of flux 0.050%
4. Phosphorus content ≤0.060%
Of flux deposited metal x-ray detection requirements: Grade I
Deposited metal diffusion hydrogen content: ≤5.0 ml/100g (mercury or thermal conductivity method)
Typical Chemical Composition(%):
C:0.064 Si:0.30 Mn:1.64 S:0.006 P:0.005 Ni: 3.15 Cu：0.18 Mo: 0.52 Cr：0.49
Mechanical properties of deposited metal:
Tensile strength (MPa) :930-1130
Yield Stress (MPa) : ≥790
Elongation (%) : ≥12
Impact values (J) : 120J/-20℃ ， 81J/-40℃
Recommended :
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