Manufacturing process of a transformer core

Abstract

The invention discloses a manufacturing process of a transformer iron core, and belongs to the technical field of electrical equipment production. The manufacturing process of the transformer iron core comprises the following steps: (1) preparing the following raw materials according to the formula of silicon steel: 95.95-96.85% of iron, 0.15-0.2% of aluminum, 2.9-3.5% of silicon and 0.1-0.35% of manganese, wherein the sum of the contents of the components is 100%; (2) carrying out crushing, grinding, mixing and stirring; (4) smelting the raw materials in a smelting furnace, wherein the maximum heating temperature is 1450 DEG C, and the temperature is preserved for 3-20 h; (4) manufacturing a silicon steel thin strip; (5) annealing; (6) carrying out stretching bending straightening treatment on the silicon steel thin strip; (7) cutting the silicon steel thin strip; (8) coiling a silicon steel sheet to form an iron core body; (9) coating the iron core body with an insulating paint; and (10) fastening. Compared with the prior art, the manufacturing process is reasonable in steps and high in processing efficiency, and the manufactured product is high in using performance and low in cost.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a manufacturing process of a transformer iron core. Background technique [0002] As we all know, the iron core is an indispensable core component of the magnetic circuit of a power transformer. The transformer is mainly composed of an iron core and a coil. During the working process, the iron core will generate loss, which will convert part of the electric energy into heat energy, resulting in a great waste of power. The loss of energy will also increase the temperature of the iron core. If the iron core works at high temperature for a long time, the insulating layer on its surface will age, further increasing the loss. [0003] In recent years, countries around the world are facing an increasingly serious energy crisis, requiring power equipment, including transformers, to further reduce losses and improve energy utilization. Transformer energy saving is an important indic...

AI Technical Summary

Problems solved by technology

[0004] The iron core in the existing toroidal transformer is made of a silicon steel sheet, and the remaining edge wires of the cut silicon steel sheet are treated as waste due to their small width, resulting in great waste; In order to reduce the production cost of the iron core and reduce unnecessary waste