A kind of manufacturing method of ferromagnetic core containing silicon dioxide
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of silicon dioxide and production method, which is applied in the direction of inductor/transformer/magnet manufacturing, inorganic material magnetic, electrical components, etc., to achieve the effect of uniform grains, large grains, and less cracks
Active Publication Date: 2016-05-04
TIANCHANG CITY ZHAOTIAN MAGNETOELECTRICITY TECH
View PDF1 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Now the electronic communication industry needs ferrite cores with low core loss and high magnetic permeability to meet the miniaturization and high efficiency requirements of current electrical equipment, and the existing magnetic cores are difficult to meet the above requirements
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0013] Embodiment 1: The manufacturing method of ferromagnetic core containing silicon dioxide includes the following steps:
[0014] (1) Pre-fired mixture: The mass of mixture A is Fe 2 O 3 70mol, MnO22mol, ZnO4mol, aluminum nitride 0.18mol, copper 0.18mol, boron 0.04mol, aluminum 0.35mol, silicon dioxide 0.17mol, titanium dioxide 0.20mol, tin 0.07mol; mixture B is equivalent to the total weight of mixture A Components in the following proportions: 55ppmMoO 3 , 110ppmV 2 O 5 , 85ppmBi 2 O 3 , 32ppm boron oxide, 70ppm zirconium oxide, 22ppm barium oxide, 320ppmTi and 200ppmNi; respectively accurately weigh the mixture A and the mixture B, and mix them separately with a mixing tank. The mixing time is 3 hours at 3500-4200 rpm, Then they are sent to the rotary kiln for pre-sintering, the temperature is controlled to be 360-450°C, the pre-sintering time is 2.5 hours, and the pre-sintered mixture A and mixture B are obtained;
[0015] (2) Grinding: The pre-fired mixture A and B in step...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a method for manufacturing a ferromagnetic core containing silicon dioxide. The method include steps of performing pre-sintering on a mixture A comprising Fe<2>O<3>, MoO, ZnO, aluminum nitride, copper, boron, aluminum, the silicon dioxide, titanium dioxide and tin and a mixture B comprising MoO<3>, V<2>O<5>, Bi<2>O<3>, boron dioxide, zirconium dioxide, barium dioxide, Ti and Ni; then sequentially performing grinding, mixing and pulping, powder spray-drying, green body pressing and sintering processes on the mixture A and the mixture B to obtain the ferromagnetic core. The method has the advantages that owing to an optimized formulation design and the sintering process, the initial permeability of a product manufactured by the method is 15000, cracking of the sintered product is little, the qualified rate of the product reaches 95% at least, the product is high in grain boundary resistivity and low in porosity, crystal grains of the product are large and uniform, the impendence characteristic of the product in a high-frequency range is excellent, various electromagnetic properties of the product are stable, and the ferromagnetic core product is applicable to various electronic fields.
Description
Technical field [0001] The invention relates to the manufacturing field of oxide magnetic materials, in particular to a manufacturing method of a ferromagnetic core containing silicon dioxide. Background technique [0002] With the development of communication technology and digitalization of electronic products, new requirements have been put forward for soft ferrites and components. High-performance and high-permeability magnetic cores are widely used in various basic materials for telecommunications and information, such as common mode filters, Saturated inductance, current transformers, leakage protectors, insulating transformers, signal and pulse transformers and other fields have been widely used. The current electronic communication industry requires ferrite cores with low core loss and high permeability to meet the current miniaturization and high efficiency requirements of electrical equipment. The existing magnetic cores cannot meet the above requirements. Summary of t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02H01F1/11C04B35/64
Inventor 徐杰杨从会黄国祥刘京州曾性儒张忠仁王玉志
Owner TIANCHANG CITY ZHAOTIAN MAGNETOELECTRICITY TECH