Expired electrode wear crystallization is not harmful, but it means that the electrode storage time is long and damp performance. There are several ways to deal with:
1, if the electrode coating contains a lot of iron powder, such as low-hydrogen high-efficiency iron powder electrode, high relative humidity and storage for a long time, wear-resistant electrode damp serious storage in storage must be properly.
2, all kinds of wear-resistant electrode serious deterioration, the coating has been severely shedding phenomenon, this batch of welding rod should be scrapped.
3, wear-resistant welding rod as a slight corrosion of damp core, basically does not affect the performance, but if the required high quality welding should not be used.
4, wear-resistant electrode moisture rust serious, can be downgraded or used for general component welding, the best test of its mechanical properties according to national standards, and then determine the scope of its use.
5, for many years of wear-resistant electrode should be tested for process performance, wear-resistant electrode at the required temperature for drying, welding process did not find abnormal changes in the performance of the electrode.
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