A kind of preparation method of high-strength nickel-zinc soft magnetic core

Abstract

The invention discloses a preparation method of a high-strength nickel zinc soft-magnetic magnetic core. According to the invention, a proper amount of bismuth trioxide, titanium dioxide, niobium pentoxide and silicon dioxide-doped modification formula and a doped technology change approach technology are employed. The method is characterized in that niobium pentoxide and titanium dioxide are added in the formula, silica and bismuth trioxide are added in secondary ball milling, the industrial production is carried out according to the steps of mixing, ball milling, pre-burning, secondary ball milling, sand milling, spraying, moulding and sintering, a technology of pressure-type pelletizing, slurry blending and a proper amount of viscosity and proportion is employed, and the pre-burning temperature can be obtained by establishing a relation curve among ferric oxide purity, specific surface area and the pre-burning temperature, and the pre-burning temperature can be accurately controlled according to the characteristic of each batch of the product. The formula is optimized, the technical process is improved, the production flow is improved, the magnetic core intensity is effectively increased, the production efficiency is increased, the production energy consumption is greatly reduced, and the yield is greatly increased.

Description

[0001] A kind of preparation method of high-strength nickel-zinc soft magnetic core technical field [0002] The invention relates to the field of production of electronic components, in particular to a method for a high-strength nickel-zinc soft magnetic core. Background technique [0003] With the development of electronic technology, electronic components are gradually developing towards miniaturization, light weight, high frequency, high current, low EMI and low manufacturing cost, and high reliability. Many nickel-zinc soft magnetic core products require intelligent Robots or robotic hands to make inductors. Smart devices generally require high mechanical strength of the magnetic core. At present, the SMD magnetic cores produced in China have the defect of generally low strength, which seriously plagues the inductance manufacturing industry. The magnetic core cracks and cracked inductors enter the downstream machine board and cause accidents to the host. At the same t...

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Problems solved by technology

[0005] In view of the above technical defects and barriers, the purpose of the present invention is to provide a method for preparing a high-strength nickel-zinc soft magnetic core, aiming at solving the problems of generally low magnetic core strength in the prior art, cracked magnetic cores and dark spots during the manufacturing process. Problems of cracked inductance and high energy consumption

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