A kind of transformer core manufacturing method

Abstract

The invention discloses a method for manufacturing and forming a transformer iron core. The method for manufacturing and forming a transformer iron core adopts the following forming equipment. The manufacturing and forming equipment for the transformer iron core includes a bottom plate, a steel coil frame, a heating device, a cleaning device, a cooling device and a stamping device . The invention can solve the following problems when the existing transformer iron core manufacturing and forming equipment heats the silicon steel sheet: the existing transformer iron core manufacturing and forming equipment has impurities attached to the surface of the heated silicon steel sheet when the existing transformer iron core manufacturing and forming equipment heats the silicon steel sheet. Without effective treatment, the surface unevenness of the silicon steel sheet will be poor in punching and shearing, which will reduce the performance of the transformer core. The invention can effectively treat the surface of the silicon steel sheet during heat treatment, so that the impurities on the surface are removed before punching, and the quality of the produced transformer iron core can be improved.

Description

technical field [0001] The invention relates to the technical field of transformer iron core manufacturing, in particular to a transformer iron core manufacturing and forming method. Background technique [0002] The transformer core is the main part of the magnetic circuit in the transformer. It is usually composed of hot-rolled or cold-rolled silicon steel sheets with high silicon content and coated with insulating paint. The iron core and the coil wound on it form a complete electromagnetic induction system. The amount of power transmitted by a power transformer depends on the material and cross-sectional area of ​​the iron core. Most of the transformer cores are made of silicon steel sheets. Silicon steel sheets generally contain 1.0 to 4.5% silicon and silicon alloy steel with a carbon content of less than 0.08% is called silicon steel. It has the characteristics of high permeability, low coercivity, and large resistivity, so hysteresis loss and eddy current loss are...

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Problems solved by technology

[0003] However, the existing transformer iron core manufacturing and forming equipment has the following problems when heat treating the silicon steel sheet: the surface of the heated silicon steel sheet adheres to a layer of oxides and impurities when the existing transformer iron core manufacturing and forming equipment heat treats the silicon steel sheet , if it is not treated effectively, the surface unevenness of the silicon steel sheet will be poor during punching and shearing, so that the performance of the transformer core will be reduced

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