Storage and Handling of Fluxes

Unopened flux bags must be stored in maintained storage conditions as follows:
Temperature: 68°F, +/- 18°F (20°C, +/- 10°C)
Relative humidity: As low as possible - not exceeding 60% max.
Fluxes should not be stored longer than 3 years.
The content of unheated flux hoppers must, after an 8 hours shift, be placed in a drying cabinet or heated ﬂux hopper at a temperature of 300°F, +/- 45°F (150°C +/- 25°C).
Remaining flux from unopened bags must be placed at a temperature of 300°F, +/- 45°F (150°C +/- 25°C).

Moisture and oil must be removed from the compressed air used in the re-cycling system.
Addition of new flux must be done with the proportion of at least one part new ﬂux to one parts re-cycled ﬂux.
Foreign material, such as millscale and slag, must be removed by a suitable system, such as sieving or magnetic separator.

When handled and stored as above, the ESAB ﬂuxes can normally be used straight away.
In severe applications, stipulated by the applicable material speciﬁcation, re-drying of the ﬂux is recommended.
Furthermore, if the flux has somehow picked up moisture, redrying can return the ﬂux to its original moisture content.
Re-drying shall be performed as follows:
Agglomerated ﬂuxes: 570°F, +/- 45°F (300°C +/- 25°C) for about 2-4 hours.
Fused ﬂuxes: 390°F, +/- 90°F (200°C +/- 50°C) for about 2-4 hours.
Re-drying must be done either in equipment that turns the flux so that the moisture can evaporate easily or in an oven on shallow plates with a flux height not exceeding 2 in (5 cm).
Re-dried flux, not immediately used, must be stored at 300°F, +/- 45°F (150°C +/- 25°C) before use.

Discard any product, residue, disposable container or liner in an environmentally acceptable manner, in full compliance with federal and local regulations.
Please address your local disposal company for prescribed disposal.
Information on product and residues are given in the Safety Data Sheets available through www.esabna.com/msds.