Type of flux in Welding consumable (Electrode)

December 4, 2009

Type of flux in Welding consumable (Electrode)

1.      Ilmenite type
This is the electrode containing ilmenite ore, iron sand etc., by about 30% of the flux and is placed in between acidic type and high titanium oxides in terms of flux components. It has particularly well developed and most widely been used in Japan.

It has slag of relatively high fluidity, intense arc, deep penetration, good slag covering and fine neat waves of beads.

2.      Lime Titania Type
This is the electrode with the flux containing titanium oxide by 30% and basic substance such as calcium carbonate by 20%, its arc is rather mild and its weld penetration is shallower than that of ilmenite type electrode.

It is suited for all position welding but is especially good for flat and vertical up fillet welding.

3.      High cellulose Type
This is the electrode with the flux containing organic substances by 20% which generate much gas in combustion to shield weld metal; hence this electrode is called as gas shield type electrode.

Its arc is intense, weld penetration deep and the amount of slag small, so that it is especially suited for vertical down and flat welding position. But its excessive spatter and rather coarse waves of beads restrict its used to light structure.

4.      High Titanium oxides type
This is the electrode with the flux containing much titanium oxides. Its arc mild and spatter little. Its slag is highly viscous. Its shallow weld penetration allows welding of thin sheets of steel. It is also used for light structures.

5.      Low Hydrogen type
The flux used for this electrode consists in basic substance such as calcium carbonate. Flux generates little hydrogen in combustion, and carbon dioxide gas generated upon decomposition of basic carbonate which shields the arc.

Therefore possibility of crack occurrence of weld metal is small when applied to especially thick steel plate, high tensile steel, low-alloy steel and medium carbon steel.

Even though the arc is unstable and molten droplets large compared with the electrode of other flux types. It is well suited for welding important structures for its high ductility and tenacity as well as the high tensile strength.

6.      Iron Powder, Titania Type
This is the electrode with the flux of high titanium oxides added with a large amount of iron powder, and has higher efficiency than the electrode with the flux of high titanium oxide type. But its use is restricted to the welding positions of flat and horizontal fillet.

7.      Iron Powder, Low Hydrogen Type
This is the electrode with the flux of low hydrogen type added with a large amount of iron powder. Its deposition rate is characteristically higher than that of the low hydrogen type. The mechanical quality of weld metal is the same as in the case of low hydrogen type, but its use is restricted to the welding positions of flat and horizontal fillet.

8.      Iron Powder, Iron Oxide type
This is the electrode with the flux containing ferroxide as the major component added with iron powder.
It is used for flat and horizontal fillet weld but customarily mainly for horizontal fillet weld. Its droplets are as spray and the amount of spatter is limited and slag removal is good.

9.      Special Type
This is the electrode with flux which does not belong to any of the aforementioned type. It is suited for all or one of flat, vertical, overhead, horizontal fillet welding positions.

 

Type of Flux

Kobelco Welding Consumable

     Ilmenite

       B-14, B-10, B-17

     Lime Titania

      Z-44

     High cellulose

        KOBE-6010/7010S

     High Titanium oxides

      RB-26

     Low Hydrogen

      LB-52

     Iron Powder, Titania

       Z-43F

     Iron Powder, Low Hydrogen

      LB-52-18

     Iron Powder, Iron Oxide

      Z-27

     Special

 

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