CN103073277A - Sintering technology of high-frequency MnZn power ferrite material - Google Patents
Sintering technology of high-frequency MnZn power ferrite material Download PDFInfo
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- CN103073277A CN103073277A CN2012105408751A CN201210540875A CN103073277A CN 103073277 A CN103073277 A CN 103073277A CN 2012105408751 A CN2012105408751 A CN 2012105408751A CN 201210540875 A CN201210540875 A CN 201210540875A CN 103073277 A CN103073277 A CN 103073277A
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- sintering
- ferrite material
- power ferrite
- high frequency
- mnzn power
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Abstract
The invention discloses a sintering technology of a high-frequency MnZn power ferrite material. Components of high-frequency MnZn power ferrite are reasonably burdened to satisfy product performance requirements; a vibration milling and sand milling process is adopted to avoid the powder fly and the impurity pollution, improve the efficiency and reduce the energy consumption; and the temperature and the heat insulation time of the sintering technology are controlled in a range of 1200-1260DEG C and in a range of 2.5-5h respectively to make the high-frequency MnZn power ferrite material have the characteristics of high saturation magnetic flux density, high frequency and ultralow power consumption. The sintering technology has the characteristics of low energy consumption and high efficiency, and the high-frequency MnZn power ferrite material has the advantages of good component uniformity and high mass output rate.
Description
Technical field
The present invention relates to the Ferrite Material field, particularly relate to a kind of sintering process of high frequency MnZn power ferrite material.
Background technology
High frequency MnZn power ferrite material, because it has high magnetic permeability, high resistivity, low-loss, be easy to be processed into the advantages such as different shape and main material cost relative price are lower, can be made into various electronic transformers, switch power supply, invertor, wave filter, reactance coil, inducer, electric ballast etc. with it, be widely used in the necks such as household electrical appliance, computer, mobile phone, communication, office automation, indicating meter, remote monitoring, electromagnetic compatibility, green illumination, environmental protection and energy saving.
The preparation technology of high frequency MnZn power ferrite material has traditional dry process and wet processing two large classes.Existing dry process is difficult to mix because the raw material physical property differs greatly, the unstable properties of products obtained therefrom, and also powder flies upward seriously, and production environment is poor, easily introduces contaminating impurity; The wet processing homogeneity is better, but it is high to consume energy.No matter be dry process, or wet processing, all adopting the high-sintering process more than 1280 ℃, energy loss is very large, and production cost is high, and unstable product quality, and product performance are affected simultaneously.
Summary of the invention
The technical problem that the present invention mainly solves is: for the deficiencies in the prior art, a kind of sintering process of high frequency MnZn power ferrite material is provided, has less energy-consumption, high-level efficiency, and the homogeneity of ingredients of high frequency MnZn power ferrite material is good, mass output rate is high, has the characteristic of high saturation magnetic flux density, high frequency and super low-power consumption.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of sintering process of high frequency MnZn power ferrite material is provided, may further comprise the steps:
1) batching: the Fe that chooses by mass percentage following ingredients: 65%-75%
2O
3, the MnCO of 20%-25%
3, the ZnO of 5%-10%;
2) vibration: will prepare burden in vibrating mill vibration mill 0.5-1 hour, batching is fully mixed;
3) pre-burning: the batching that vibration is good sintering in 860-900 ℃ sintering oven, and be incubated 1.5-2.5 hour;
4) sand milling: the batching after pre-burning is put into sand mill, and the adding mass percent is the CaCO of 0.1%-0.5%
3, 0.05%-0.15% V
2O
5, 0.05%-0.1% Nb
2O
5TiO with 0.1%-0.2%
2, then carry out sand milling, form powder;
5) granulation: the tackiness agent that adds 5%-10% in powder carries out granulation;
6) moulding: on the press with the powder pressing moulding after the granulation;
7) sintering: the blank after the moulding is put into atmosphere sintering furnace, sintering under 1200-1260 ℃ of temperature, and be incubated 2.5-5 hour.
In a preferred embodiment of the present invention, the time of described vibration is 1 hour.
In a preferred embodiment of the present invention, the temperature of sintering oven is 880 ℃ during described pre-burning, and sintering time is 2 hours.
In a preferred embodiment of the present invention, the time of described sand milling is 3-6 hour.
In a preferred embodiment of the present invention, described tackiness agent is polyvinyl alcohol.
In a preferred embodiment of the present invention, the press pressure during described moulding is 65-75MPa.
The invention has the beneficial effects as follows: 1) rationally prepare burden according to high frequency MnZn power ferrite composition, satisfy the product performance requirement; 2) adopt vibration and sand milling technique, avoided powder to fly upward and contaminating impurity, and improved efficient, reduced energy consumption; 3) control of sintering process temperature-time makes high frequency MnZn power ferrite material have the characteristic of high saturation magnetic flux density, high frequency and super low-power consumption.
Embodiment
The below is described in detail preferred embodiment of the present invention, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
The embodiment of the invention comprises:
Embodiment one:
A kind of sintering process of high frequency MnZn power ferrite material may further comprise the steps:
1) batching: choose by mass percentage following ingredients: 70.7% Fe
2O
3, 22% MnCO
3, 7.3% ZnO;
2) vibration: will prepare burden in vibrating mill vibration mill 0.5-1 hour, and be preferably 1 hour, batching is fully mixed;
3) pre-burning: the batching that vibration is good sintering in 880 ℃ sintering oven, and be incubated 2 hours;
4) sand milling: the batching after pre-burning is put into sand mill, and the adding mass percent is 0.3% CaCO
3, 0.1% V
2O
5, 0.1% Nb
2O
5With 0.15% TiO
2, then carry out sand milling, form powder, wherein, the time of described sand milling is 4 hours;
5) granulation: the tackiness agent of adding 7% carries out granulation in powder, and wherein, described tackiness agent is polyvinyl alcohol;
6) moulding: on the press with the powder pressing moulding after the granulation, wherein, the pressure of described press is 70MPa;
7) sintering: the blank after the moulding is put into atmosphere sintering furnace, sintering under 1240 ℃ of temperature, and be incubated 3 hours.
Embodiment two:
A kind of sintering process of high frequency MnZn power ferrite material may further comprise the steps:
1) batching: choose by mass percentage following ingredients: 71% Fe
2O
3, 22.5% MnCO
3, 6.5% ZnO;
2) vibration: will prepare burden in vibrating mill vibration mill 0.5-1 hour, and be preferably 1 hour, batching is fully mixed;
3) pre-burning: the batching that vibration is good sintering in 900 ℃ sintering oven, and be incubated 2 hours;
4) sand milling: the batching after pre-burning is put into sand mill, and the adding mass percent is 0.35% CaCO
3, 0.15% V
2O
5, 0.05% Nb
2O
5With 0.1% TiO
2, then carry out sand milling, form powder, wherein, the time of described sand milling is 4.5 hours;
5) granulation: the tackiness agent of adding 7% carries out granulation in powder, and wherein, described tackiness agent is polyvinyl alcohol;
6) moulding: on the press with the powder pressing moulding after the granulation, wherein, the pressure of described press is 65MPa;
7) sintering: the blank after the moulding is put into atmosphere sintering furnace, sintering under 1230 ℃ of temperature, and be incubated 2.5 hours.
The present invention has disclosed a kind of sintering process of high frequency MnZn power ferrite material, rationally prepares burden according to high frequency MnZn power ferrite composition, satisfies the product performance requirement; Adopt vibration and sand milling technique, avoided powder to fly upward and contaminating impurity, and improved efficient, reduced energy consumption; Temperature and time by the control sintering process makes high frequency MnZn power ferrite material have the characteristic of high saturation magnetic flux density, high frequency and super low-power consumption.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes description of the present invention to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (6)
1. the sintering process of a high frequency MnZn power ferrite material is characterized in that, may further comprise the steps:
1) batching: the Fe that chooses by mass percentage following ingredients: 65%-75%
2O
3, the MnCO of 20%-25%
3, the ZnO of 5%-10%;
2) vibration: will prepare burden in vibrating mill vibration mill 0.5-1 hour, batching is fully mixed;
3) pre-burning: the batching that vibration is good sintering in 860-900 ℃ sintering oven, and be incubated 1.5-2.5 hour;
4) sand milling: the batching after pre-burning is put into sand mill, and the adding mass percent is the CaCO of 0.1%-0.5%
3, 0.05%-0.15% V
2O
5, 0.05%-0.1% Nb
2O
5TiO with 0.1%-0.2%
2, then carry out sand milling, form powder;
5) granulation: the tackiness agent that adds 5%-10% in powder carries out granulation;
6) moulding: on the press with the powder pressing moulding after the granulation;
7) sintering: the blank after the moulding is put into atmosphere sintering furnace, sintering under 1200-1260 ℃ of temperature, and be incubated 2.5-5 hour.
2. the sintering process of high frequency MnZn power ferrite material according to claim 1 is characterized in that, the time of described vibration is 1 hour.
3. the sintering process of high frequency MnZn power ferrite material according to claim 1 is characterized in that, the temperature of sintering oven is 880 ℃ during described pre-burning, and sintering time is 2 hours.
4. the sintering process of high frequency MnZn power ferrite material according to claim 1 is characterized in that, the time of described sand milling is 3-6 hour.
5. the sintering process of high frequency MnZn power ferrite material according to claim 1 is characterized in that, described tackiness agent is polyvinyl alcohol.
6. the sintering process of high frequency MnZn power ferrite material according to claim 1 is characterized in that, the press pressure during described moulding is 65-75MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105408751A CN103073277A (en) | 2012-12-14 | 2012-12-14 | Sintering technology of high-frequency MnZn power ferrite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105408751A CN103073277A (en) | 2012-12-14 | 2012-12-14 | Sintering technology of high-frequency MnZn power ferrite material |
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| CN103073277A true CN103073277A (en) | 2013-05-01 |
Family
ID=48150001
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771849A (en) * | 2014-01-06 | 2014-05-07 | 苏州冠达磁业有限公司 | High-performance soft magnet for high-frequency low-loss switching mode power supply transformer |
| CN104900367A (en) * | 2015-04-24 | 2015-09-09 | 马鞍山科信咨询有限公司 | Nano-iron powder-containing soft magnetic ferrite materials and preparation method |
| CN104900365A (en) * | 2015-04-24 | 2015-09-09 | 马鞍山科信咨询有限公司 | High-performance soft magnet ferrite for LED lighting and display screen and preparation method thereof |
| CN104900366A (en) * | 2015-04-24 | 2015-09-09 | 马鞍山科信咨询有限公司 | High-saturation magnetization soft magnetic ferrite and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055784A (en) * | 2006-03-06 | 2007-10-17 | Tdk株式会社 | Mn-Zn based ferrite material |
| CN101061080A (en) * | 2004-11-19 | 2007-10-24 | 日立金属株式会社 | Low-loss Mn-Zn ferrite and, electronic part and switching power supply utilizing the same |
-
2012
- 2012-12-14 CN CN2012105408751A patent/CN103073277A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101061080A (en) * | 2004-11-19 | 2007-10-24 | 日立金属株式会社 | Low-loss Mn-Zn ferrite and, electronic part and switching power supply utilizing the same |
| CN101055784A (en) * | 2006-03-06 | 2007-10-17 | Tdk株式会社 | Mn-Zn based ferrite material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771849A (en) * | 2014-01-06 | 2014-05-07 | 苏州冠达磁业有限公司 | High-performance soft magnet for high-frequency low-loss switching mode power supply transformer |
| CN103771849B (en) * | 2014-01-06 | 2015-07-01 | 苏州冠达磁业有限公司 | High-performance soft magnet for high-frequency low-loss switching mode power supply transformer |
| CN104900367A (en) * | 2015-04-24 | 2015-09-09 | 马鞍山科信咨询有限公司 | Nano-iron powder-containing soft magnetic ferrite materials and preparation method |
| CN104900365A (en) * | 2015-04-24 | 2015-09-09 | 马鞍山科信咨询有限公司 | High-performance soft magnet ferrite for LED lighting and display screen and preparation method thereof |
| CN104900366A (en) * | 2015-04-24 | 2015-09-09 | 马鞍山科信咨询有限公司 | High-saturation magnetization soft magnetic ferrite and preparation method thereof |
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Application publication date: 20130501 |