Analysis of Transformer in Medium Frequency Spot Welding Machine

Transformer is one of the core components of intermediate frequency spot welding machine, playing an important role in the welding process. What kind of transformer is a qualified intermediate frequency spot welding machine transformer.

A high-quality transformer first needs to be wrapped with copper enameled wire, followed by an integrated water-cooled structure made of copper material. High quality oxygen free copper structure has the best effect, low resistance, high conductivity, slow oxidation rate, and long service life. In recent years, there have been more and more vacuum cast transformers, which has become a trend because vacuum cast transformers have good moisture-proof and thermal insulation effects, and longer service life.

However, due to the result of vicious market competition, some companies have upgraded all the initial stages of transformers to aluminum transformers in order to reduce production and manufacturing costs. As a result, manufacturing costs have been greatly reduced. However, aluminum is a very easily oxidized metal, and a long welding time will inevitably cause an increase in resistivity and a decrease in welding current. With the impact of high currents, aluminum oxidation becomes increasingly severe, and the final current cannot be output. The medium frequency spot welding machine using aluminum clad transformers has a short lifespan and increases the purchasing cost for customers.