(A) submerged arc welding
Flux for submerged arc weld metal when the protective role and metallurgical processing, mainly as a filler Gas Shielded Welding Wire, while adding alloying elements to the weld, and in metallurgical reaction.
1, with a low-carbon steel and low alloy steel welding wire
Submerged arc welding low carbon and low alloy steel welding wire used has the following three categories.
(1) low manganese welding wire (such as H08A): often with high manganese and low carbon flux for the lower strength low-alloy steel welding.
(2) manganese wire (such as H08MnA, H10MnS): mainly used for welding low-alloy steel, flux can also be used with low-manganese low-carbon steel welding.
(3) high manganese wire (such as H10Mn2 H08Mn2Si): ??for low alloy steel welding.
2, high-strength steel with a wire
Such wire with Mn1% or more, with Mo0.3% ~ 0.8%, as H08MnMoA, H08Mn2MoA, for high strength low alloy high strength steel welding. In addition, according to the high-strength steel composition and performance requirements, but also in the wire by adding NI, CR, V, and Re and other elements to improve the weld properties. Level of weld metal tensile strength 590Mpa MN-MO system to use more wire, such as H08MNMOA and so on.
3, with stainless steel wire
Wire components used in stainless steel with welded into basically the same, welding chromium stainless steel, Types Of Welding Wires , etc. using HoCr14 H1Cr13 H1Cr17; welding chromium - nickel stainless steel, wire, etc. using H0Cr19Ni9 HoCr19Ni9 HoCr19Ni9Ti; welding low carbon stainless steel should be used accordingly ultra-low carbon wire, such as HOOCr19Ni9, etc., can be fused or sintered flux type, the oxidation of small flux required to reduce the burning of alloying elements. Mainly in foreign countries, agglomerated flux welding of stainless steel, China is still melting flux-based, but is developing and promoting the use of sintering flux.