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A production process of power type magnetic substrate

A production process and power-based technology, applied in the field of power-based magnetic substrate production technology, can solve the problems that products are difficult to meet performance and precision requirements, difficult to form and sinter deformation, and difficult to quantify production, so as to improve the product process qualification rate and comprehensive Yield, reduce sintering cost, avoid the effect of electricity peak

Active Publication Date: 2019-01-22
长兴柏成电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the invention is to overcome the problems of difficult molding and serious sintering deformation in the conventional magnetic substrate production process in the prior art, and the product is difficult to meet its performance and precision requirements, resulting in extremely difficult quantitative production. A power-type magnetic substrate production process that improves the pass rate of the product process and the comprehensive yield, has good consistency in electrical performance indicators and other technical requirements, saves energy consumption, and saves costs

Method used

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Embodiment Construction

[0037] The present invention will be further described below in combination with specific embodiments.

[0038] The embodiment is a production process of a power type magnetic substrate, comprising the following steps:

[0039] Step 100: Compression forming: using a high-tonnage press to press the soft ferrite magnetic material into a magnetic column with a column structure; at the same time, adjust the pressing center line of the mold to ensure that the density of the inner and outer bodies and the upper and lower parts of the pressed body are consistent;

[0040] Step 200: Sintering: Nitrogen protection is adopted, and the sintering process of stepwise temperature adjustment is adopted; the magnetic columns are placed side by side on the setter plate, and the layers are separated by corundum sand, and the sintering method of stacking side by side is adopted;

[0041] Step 210: heating and sintering: the heating rate of the furnace temperature is 3-10°C / min;

[0042] The fir...

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Abstract

The invention discloses a production process of a power type magnetic substrate. The process includes the five steps of carrying out compression forming; carrying out sintering, wherein a side-by-side stacking sintering process with multistep temperature regulation under nitrogen protection is adopted; carrying out cutting; carrying out polishing; carrying out detection. The process has the advantages that the product procedure percent of pass and the overall finished product rate are increased, the electrical property index and other technically required indexes are good in consistency, and energy consumption and cost are reduced.

Description

technical field [0001] The invention relates to the technical field of electronic device preparation, in particular to a power-type magnetic substrate production process that improves the qualified rate of the product process and the comprehensive yield, has good consistency in electrical performance indicators and other technical requirements, saves energy consumption, and saves costs. Background technique [0002] Soft ferrite magnetic materials have a wide range of applications and fields. A new type of power-type soft ferrite substrate will be widely used in the field of wireless charging applications, and will replace the inconvenience caused by the original wired charging. A series of problems such as unsafe and energy-saving. Since the power-type magnetic substrate for wireless charging requires high precision and a small range of electrical performance requirements, its surface area is 300 mm 2 Above, and the thickness is less than 1.5mm, there are serious problems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/64H01F1/34B28D1/22
CPCB28D1/22C04B35/64C04B2235/656C04B2235/658H01F1/344
Inventor 柏玉新徐玉明
Owner 长兴柏成电子有限公司
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