Braze joint is key work in the installation and maintenance of generator, and if the weld is bad, may cause the whole scrap bars, especially in the cold water line bar welding power.
Therefore, in the brazing operation must go through professional training, and certificates after passing the examination. The operator should note the use and operation of the machine. Familiar with copper
In the case of the formal welding wire rod joint, should be used to test the old wire rod or simulated copper block, in order to grasp the current size, welding time and temperature.
According to the situation of generator end, end winding insulation protection using wet asbestos cloth or special fireproof cloth, to prevent overheating. The insulation cooling jacket and some manufacturers requirements through the cooling water to the bar end for the welding of welded joints after cooling treatment, need to be welded.
The upper and lower bars of the stator winding should be cleaned by the butt joint of the wire rod (butt joint) before entering the groove. Otherwise, the contact surface will not be able to be processed when the upper wire rod is in
Welding parts bright, smooth, no burr, burr, the exposed metallic copper; steel wire brush, fine sandpaper or a file cleanup, according to the situation can be properly polished.
Brazed joints generally use copper welding special welding copper welding machine. A medium frequency induction heating and high current carbon solder two, should be connected structures depending on specific joints. Intermediate frequency induction heating type copper welding machine has advantages of fast heating, easy operation, widely used.
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