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Integrated segmented forming micro-inductor manufacturing process

A process technology and micro-inductor technology, which is applied in the field of integrated segmented forming micro-inductor process technology, can solve the problems of low current resistance of non-wound inductors, unfavorable mass production, small saturation current, etc., and achieves strong current resistance capability, Reduced risk of short circuit, high saturation current effect

Pending Publication Date: 2021-03-23
华萃微感电子(江苏)有限公司
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  • Application Information

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Problems solved by technology

At present, the current resistance of non-wound inductors is relatively small, and the non-integrated inductors have high noise, low mechanical strength and low saturation current due to the existence of air gaps, while traditional integrated inductors welded with metal guides are prone to detachment. Welding, virtual welding, and the process is relatively complicated, which is not conducive to automated mass production

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  • Integrated segmented forming micro-inductor manufacturing process

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Embodiment Construction

[0027] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present utility model more clearly.

[0028] Such as figure 1 , an integrated segmented micro-inductance manufacturing process, comprising the following steps:

[0029] (1) Magnetic core embryo forming

[0030] The magnetic powder is pressed into an "I" or "T" type magnetic core preform body through a cold pressing die, the powder particles of the magnetic powder used are 100~200 mesh, and the bulk density is 2.0~2.5g / cm 3 . The magnetic core preform prepared by cold pressing is baked at 210°C for 3 to 9 minutes or at 120°C for 30 to 60 minutes to obtain a magnetic core blank with a certain strength including a magnetic column and a base body, and the density of the magnetic...

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Abstract

The invention discloses an integrated segmented forming micro-inductor manufacturing process which comprises the steps of magnetic core blank forming, winding, powder-coated hot-pressing packaging, insulating rust-proof treatment, laser paint stripping and pin electroplating. A semi-finished inductor is obtained by winding a flat wire on a magnetic core, and the winding inductor is provided with acomplete closed magnetic loop; and the conductor is only provided with a complete coil, and an integrated hot press molding process is adopted, so that the inductor product has the advantages of highsaturation current, high current resistance and low noise. The insulating rust-proof treatment process adopts a thermal spraying technology, so that the inductor meets the requirements of insulationand rust prevention, and meanwhile, the salt fog resistance of the inductor is improved. The design of directly stripping the resin layer on the inductor by laser to obtain the pins is adopted, silverpaste does not need to be printed, connection such as metal guide piece welding is not adopted, the structure is more stable, the overall process is simpler, and automatic large-batch production is easy.

Description

Technical field: [0001] The invention relates to the technical field of inductance production, in particular to an integrated segmented micro-inductance manufacturing process. Background technique: [0002] Inductors are components that can convert electrical energy into magnetic energy and store it. With the development of people's requirements for inductance products in the direction of miniaturization, multi-functionality, and high efficiency, the requirements for inductance size are getting smaller and smaller, and the requirements for the withstand current and saturation current of the inductance are getting higher and higher. At the same time, the requirements for the inductance The resistance value is also required to be smaller and smaller to reduce the heat generated by the current. At present, the current resistance of non-wound inductors is relatively small, and the non-integrated inductors have high noise, low mechanical strength and low saturation current due t...

Claims

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Application Information

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IPC IPC(8): H01F41/00H01F41/06
CPCH01F41/00H01F41/06H01F41/005
Inventor 周晟高彦华李正龙
Owner 华萃微感电子(江苏)有限公司
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