transformer laminated iron cores

In the production of transformer laminated iron cores, the core measures to ensure the insulation performance of silicon steel sheets can be simplified into the following four points:

1Raw material control: Select oriented silicon steel sheets with qualified insulation coatings from the factory, inspect the integrity of the coating and insulation resistance upon arrival, and eliminate non-conforming products.

2.Processing protection: Use laser cutting or high-precision punching to reduce coating damage, control burrs ≤ 0.03mm; remove burrs and ultrasonic cleaning after processing to remove debris and oil stains, and apply insulation coating to damaged coatings.

3.Stacking standard: Operators should wear dust-free gloves to avoid naked contact with contaminated coatings; The tooling table should be kept clean to prevent metal impurities from being embedded between the sheets.

4.Finished product inspection: During the finished product stage, randomly inspect the insulation resistance between the pieces to ensure that the value meets the standard and eliminate the hidden danger of local short circuits.