The importance of spot welder transformers

For a spot welding machine with excellent quality, its transformer must first be wound with copper enameled wire in the primary, and the secondary is an integrated water-cooled structure poured with copper.

High-quality oxygen-free copper structure, the best effect, low resistivity, high conductivity, slow oxidation speed, long service life, in recent years, more and more vacuum casting transformers have become, which has also become a trend, because vacuum casting transformers are moisture-proof Good thermal insulation effect and longer service life.

However, due to the result of vicious market competition, some companies now upgrade the primary and secondary transformers to aluminum transformers in order to reduce manufacturing costs, which greatly reduces manufacturing costs. As a result, the resistivity is increased and the welding current is reduced. With the impact of the large current, the oxidation of the aluminum becomes more and more severe, and the final current cannot be output. The spot welding machine using the aluminum-clad transformer has a very short service life, which increases the customer's procurement cost.