All metal shielded metal arc electrode coverings has to be protected from wetness pickup. Normally, electrodes packaged inside hermetically sealed containers may be stored for almost a year without deteriorating. Nonetheless, after the box is opened, the coating begins to absorb moisture and, with regards to the ambient air problem, may need being reconditioned after simply four hours regarding exposure, otherwise porosity may well result, especially with arc starts.
Typically, redrying at 500 to be able to 600=B0F (260 to be able to316=B0C) for an hour restores the electrode to be able to its original problem, and storing in the holding oven with 300=B0F (149=B0C) will be satisfactory. Due to be able to differences in components and processing, the supplier needs to be consulted if huge amounts of electrodes may take place.
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