(1) according to the different manufacturing methods, the flux cored wire is divided into: flux cored wire and seamless flux cored wire two sewn seam flux cored wire is thin strip by forming roll processed into a slot inside the volume into the powder, rolled into a tube and then Roberts, processing is made of low carbon steel strip of raw materials commonly used, the finished wire surface to surface rust treatment. to have good wire feeding performance, so the surface treatment. slit flux-cored wire, and then after plating in the pre-forming steel pipe filled with powder, caramelized, reaching the size of the diameter of wire products.

(2) the protection of the different gases in welding, the flux cored wire is divided into: gas shielded flux cored wire, and self-shielded flux cored wire in China, Japan, South Korea, most of the flux cored wire using CO2 as a shielding gas In the U.S. the ratio of shielded flux cored wire is relatively high, due to the protection of the difference in gas prices in Europe, flux cored wire used mainly mixed gas (Ar-CO2) to protect.

(3) According to different purposes, the flux cored wire is divided into: low carbon steel and 490MPa grade steel, high strength steel, heat resistant steel, low temperature steel, is corrosion of steel, stainless steel, and hard surface cover surfacing flux cored wire due to internal medicine core formulation of flux-cored wire can be adjusted with manual welding the full range of flux cored wire for shipbuilding industry all-position flux cored wire, low-temperature flux-cored wire for marine structures, used in boilers, pressure vessels, heat-resisting steel flux cored wire.

(4) fill the composition of the powder can be flux cored wire is divided into the slag Welding Wire  metal powder flux cored wire. Slag type flux cored wire according to the slag basicity can be divided into titanium (acidic residue) titanium calcium type (neutral or weakly alkaline residue) and alkaline (basic slag) flux cored wire. titania type flux cored wire weld forming a good all-position welding operability, but the notch toughness crack resistance somewhat less contrary alkaline flux cored wire notch toughness and crack resistance, the appearance of the weld molding and operational backward. lime-titania type flux cored wire in between in recent years With the development of flux cored wire, the new titanium-type flux cored wire is not only the welding process, and the deposited metal diffusible hydrogen content is low, and excellent impact toughness. lime-titania type flux cored wire is rarely used. The metal powder flux cored wire has solid wires of low slag (slag to produce small amounts), good crack resistance characteristics, and both the titania type flux cored wire welding operation performance. welding efficiency than theFlux Cored Welding Wire is even higher.

MIG and TIG welding method due mainly to pure Ar as a protective gas, so the outside air, oxygen, nitrogen, hydrogen, and other harmful gases are difficult to enter the molten bath; argon gas or impurities does not produce harmful weld properties; the argon Welding Wire and molten pool the alloy oxidation few etc. welded joints have a very excellent physical and chemical properties. But it may be detrimental to the welding efficiency and weld penetration.
So to the constituent of the wire as much as possible close to the base material ingredient as the principle of the choice of the wire is suitable.
Stainless steel performance largely depends on the ingredients.
Ingredient of stainless steel submerged arc welding wire design considering the loss due to Brazing Alloy burning. The choice of the series of wire should be subject to the welding base metal composition, selection of the same alloy system; wire ingredients (equal to or slightly higher than) as close as possible to the base metal composition. Different stainless alloy system performance