Transformer cores are generally made of silicon steel sheets. Silicon steel is a type of steel containing silicon (also known as silica). The reason for using silicon steel to make transformer cores is that it is a highly permeable magnetic material, which can generate a strong magnetic induction intensity within an energized coil. This allows the volume of the transformer to be reduced. Read More

The magnitude of the main magnetic flux in a transformer core is determined by the excitation current. Since the no-load current of a transformer actually varies with its operating voltage, a higher voltage results in a larger no-load current, which in turn increases the excitation current. Conversely, a lower voltage leads to a smaller no-load current. Read More

a. Flare and form one end of the rivet. The flared thickness should be 2.3-3 mm, with a diameter of Φ13.5-14 mm. b. Place the processed silicon steel sheets onto the dedicated fixture for stacking. Trim the core laminations during the stacking process, ensure they are perpendicular to the base plane, and prevent any eccentricity. c. After the core stacking is complete and clamped tightly with a pressure plate, measure the stacking thickness to ensure it meets the drawing requirements. d. Fit the rivets with washers, insulating spacers, and insulating sleeves, then flare and form them. Ensure that the tightness of all installed rivets is consistent. Read More