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Transformer function of intermediate frequency spot welding machine
For an intermediate frequency spot welding machine with excellent quality, its transformer must firstly be wound with copper enameled wire, and secondly be an integrated water-cooled structure casted by copper. High-quality oxygen-free copper structure has the best effect, low resistivity, high conductivity, slow oxidation speed and long service life. In recent years, more and more vacuum cast transformers have become a trend, because vacuum cast transformers are moisture-proof The heat insulation effect is good, and the service life is longer.
However, as a result of vicious market competition, some companies have upgraded the primary and secondary transformers to aluminum transformers in order to reduce manufacturing costs. This greatly reduces manufacturing costs. However, aluminum is a metal that is easily oxidized, and the welding time is bound to be long. As a result, the resistivity increases and the welding current is reduced. With the impact of the high current, the oxidation of aluminum becomes more and more severe, and the current cannot be output in the end. The service life of the intermediate frequency spot welding machine using aluminum-clad transformer is very short, which increases the customer's purchase cost.
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