Manufacturing process of special-shaped ferrite magnetic core

Abstract

The invention belongs to the technical field of ferrite, and particularly relates to a manufacturing process of a special-shaped ferrite core. The manufacturing process comprises the steps of (1) conducting punch forming, specifically, selecting soft magnetic ferrite particle powder, and preparing a sealed blank or a connected blank designed by the process on a vertical forming machine or a high-speed rotary forming machine by adopting a mold in a bidirectional punching manner; (2) sintering; (3) cutting and grinding; (4) carrying out ultrasonic cleaning; and (5) inspecting. According to the process, the phenomenon that a conventional preparation method for preparing the special-shaped magnetic core element is prone to causing product deformation can be overcome, the thinking frame that the special-shaped magnetic core element can only be formed in a vertical pressing mode but cannot be formed in a side pressing mode is broken through, and the process is achieved through a density compensation method. The manufacturing process is easy to operate, convenient to process and easy to industrialize, the special-shaped magnetic core element with high dimensional precision can be manufactured, the percent of pass is greatly increased, the cost is saved, and the manufacturing process has high industrial utilization value and is worthy of popularization and application.

Description

technical field [0001] The invention belongs to the field of ferrite technology, and in particular relates to a manufacturing process of a special-shaped ferrite core. Background technique [0002] Soft ferrite core is an important basic functional component in the electronic information industry, such as power supply, communication, electric light source, smart home appliances and other fields. It is also a magnetic component with the most varieties, the widest application and the largest consumption. After more than half a century of development and innovation, the performance of global soft ferrite has been greatly improved and enhanced, its output has also increased year by year, and its application fields and scope have also continued to expand. [0003] The molding process of soft ferrite cores adopts powder molding technology, while the traditional method for the molding process of special-shaped magnetic core components is "vertical pressing" molding, and the product...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiency that the conventional preparation method of special-shaped magnetic core components easily leads to product deformation, and to provide a manufacturing process for special-shaped ferrite magnetic cores, by optimizing the composition and blank of soft magnetic ferrite particle powder The process design of the parts adopts the method of "side pressure forming" and "density compensation" with specific soft ferrite particle powder, and the sealing or conjoined blanks are prepared by two-way punching of the mold.

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