The electrode custody of the good or bad has a direct impact on the welding quality, in particular, pay special attention to work in the field. Each welder, curators and technical staff should be aware of the electrode storage, custody rules. Electrode and other coatings, in many cases will be destroyed: 1) Transport, handling, use damage; 2) immersed in water or moisture absorption; 3) the oil or other corrosive medium pollution.

Injury: (1) electrode in the general case of damage resistance to the outside world, but can not ignore the the safekeeping bad very vulnerable to damage. The electrode is a ceramic product, he can not impact resistant as steel core, loading and unloading can not throw him. Cartons electrode can not be used can not be linked to handling. Certain models of electrode such as the special drying requirements of basic Welding Rod coatings more than the normal electrode to be handled with care.

Moisture absorption (2): too high moisture in the electrode coating contains very dangerous, because many workers do not understand the electrode is wet welding finished weld surface pores is not necessarily visible with the naked eye, but X-ray inspection showing stomata. When welding rod factory, all of the electrode has a water content, which change according to the model of the electrode, the water content is normal, that is, the formation of pores with a water content of the safety factor, the quality of the weld has no effect. All have to electrodes in the air can absorb moisture and relative humidity of 90%, the welding rod coatings absorb water quickly, ordinary alkaline electrode exposed to a very serious day damp old, even a relative humidity of 70% coating moisture increased. only in the relative humidity of 40% or less, the electrode is long-term storage was not the first impact.

Due to the difference between day and night humidity, the moisture of the air in the morning it is easy to condense into dew, it is easy wet electrode packaging. Electrode stored for a long time, it is easy to damp, so it is best done first storage electrode first.

Under normal circumstances, the electrode from a plastic bag and carton packaging, in order to prevent moisture absorption in the electrode before use, can not be arbitrarily apart, as far as possible be done now with now demolished, there may be remaining after Welding Electrode is then sealed.

Simple identification wet method:

(1) removed from different locations several electrode with two hand thumb and index finger between the electrode support gently shaken, if the electrode is dry hard and brittle, metallic sound, if the electrode is damp, sound blunt. Electrode is often in use for a variety of tests, the sound is different between dry and damp electrode, this can prevent the misuse of damp electrodes.

(2) If the electrode welding using some model of damp found a crack sound and stomatal, then we must consider the electrode whether drying, and then consider other reasons.

(3) with damp electrode welding electrode water content is very high, and even can see the electrode surface water vapor issued, or when electrode welding a most electrode tail cracks exist.