1. Arc Welding (TIG, A-TIG, MIG, etc.) With Flux

a) Flux for TFA-5, TFA-7, TFA-12,TFA-15, TFM-1 and TFM-2 types for welding of items made of aluminium and magnesium alloys, with thickness of up to 4,0 mm.

Advantages:

• welding possibility of angle joints without filler wire;
• elimination of metal welds defects (faulty fusion, oxide elements and high porosity);
• improvement of weld formation (2,3 times reduction of welding sag);
• protection of welds from environmental influence;
• improvement of metal weld macro- and -micro structure;
• reduction in requirements to condition of welding surfaces;
• improvement of mechanical properties of welding joints (10-15 % increase in strength, 50-60 % increase in plasticity).

These flux are used in welding of items made of aluminium alloys of IL-76, IL-86, airliners.

Macrostructure of 5086 aluminium alloy welded joints (2-mm-thick) made by argon-arc welding

b) Flux film for single-pass welding of aluminium alloy items with thickness up to 10,0 mm.

Advantages:

• possibility produce single-pass, square-groove, full penetration welds up to 10 mm without lining;
• elimination of welds’ defects;
• improvement of welds smelting formation;
• improvement of welding joints’ mechanical properties (40-50 % increase in strength, 12-17 % increase in plasticity);
• protection of welds from environmental influence;
• reduction of labour input (50-60 % decrease in labour expenditures);
• saving on electric energy and welding materials.

Macrostructure of Amg61 (Al-Mg-Zr) aluminium alloy welded joints (4, 6 and 8-mm-thick) made by argon-arc welding

GTAW, Without flux

GTAW, With flux tape