CN116003120A - Technological method for improving product performance by utilizing presintering equipment - Google Patents
Technological method for improving product performance by utilizing presintering equipment Download PDFInfo
- Publication number
- CN116003120A CN116003120A CN202211722271.9A CN202211722271A CN116003120A CN 116003120 A CN116003120 A CN 116003120A CN 202211722271 A CN202211722271 A CN 202211722271A CN 116003120 A CN116003120 A CN 116003120A
- Authority
- CN
- China
- Prior art keywords
- presintering
- equipment
- sintering
- sanding
- grinding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Magnetic Ceramics (AREA)
Abstract
The invention relates to a process method for improving product performance of presintering equipment, which comprises the following steps: s1, weighing main components of a manganese-zinc ferrite material according to a proportion, adding grinding balls and water to carry out wet mixing and sanding, and drying to obtain a primary sand abrasive; s2, presintering the primary sand abrasive material by adopting presintering equipment to obtain presintering materials; s3, adding impurities into the presintered material, adding grinding balls and water for secondary wet grinding, and drying for the second time to obtain a secondary grinding material; s4, adding a PVA binder, granulating, and then compacting and forming the granules to obtain a blank; s5, sintering the blank to obtain the high-frequency high-magnetic-field low-loss manganese zinc ferrite material. The method ensures that all particles of the manganese zinc raw material are heated uniformly; the same material enters the same collecting box from the discharge hole, so that the phenomenon of material mixing can not occur, the used presintering equipment has an external force knocking design, the main body of the presintering equipment can be knocked at regular time according to the rotating speed, the raw materials can be prevented from adhering to the inner wall of a kiln of the presintering equipment, and the utilization rate of the raw materials is improved.
Description
Technical Field
The invention relates to a process method for improving product performance of presintering equipment, and belongs to the technical field of magnetic material production.
Background
The ferrite soft magnetic raw material adopts a tunnel kiln in the presintering process, and the length of the tunnel kiln can be selected according to the condition of the production site. Raw materials need to be manually filled into the ceramic sagger, and the filled sagger must be cleaned before use, so that no impurity is ensured. And then the materials are orderly placed on a pushing plate according to the requirements, and pushed into the tunnel kiln by mechanical external force. And setting the temperature of the kiln and feeding frequency. The sagger filled with raw materials enters the kiln, and the presintering process is completed at a preset high temperature. The presintering temperature is generally 800-1100 ℃ according to the requirements of manganese zinc materials with different formulas. Because the feeding mode of the tunnel kiln is linear feeding, raw materials are static and stacked in the sagger, the heating degree is different, and the heating reactions among material atoms are different, so that the formation size of crystal grains is different, the sintering process is influenced, and the sintering process cannot be accurately controlled. Based on the above, there is a need for an apparatus that allows uniform heating of the powder to achieve the desired grain effect during the burn-in phase.
Disclosure of Invention
First, the technical problem to be solved
In order to solve the above problems in the prior art, the present invention provides a process for improving product performance by using a burn-in apparatus.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:
a process method for improving product performance by utilizing presintering equipment comprises the following steps:
s1, weighing main components of a manganese-zinc ferrite material according to a proportion, adding grinding balls and water to carry out wet mixing and sanding, and then carrying out primary drying to obtain a primary sand abrasive;
s2, presintering the primary sand abrasive material by adopting presintering equipment to obtain presintering materials;
s3, adding impurities into the presintered material, adding grinding balls and water for secondary wet grinding, and then performing secondary drying to obtain a secondary grinding material;
s4, adding PVA binder into the secondary sand grinding material, granulating, and then compacting and forming the granules to obtain a blank;
s5, sintering the blank under the condition of controlling the oxygen partial pressure to be 3-5 vol percent to obtain the high-frequency high-magnetic-field low-loss manganese zinc ferrite material.
In the above process, preferably, in step S1, the addition amounts of the grinding balls and water are as follows: ball: the water mass ratio is 1:5 to 5.5: 1-2, the rotating speed of the ball mill is 65-75 r/min, and the sanding time is 60-90 min.
In the above process, preferably, in step S1, the primary drying is performed at a temperature of 100 to 110 ℃ for a time of 40 to 50 hours.
In the above process method, preferably, in step S2, the pre-sintering device is a main body including a pre-sintering device and a knocking hammer, the main body of the pre-sintering device is a rectangular rotary kiln, the front end and the rear end of the main body of the pre-sintering device are respectively provided with a discharge port and a feed port, the bottom of the main body of the pre-sintering device and a horizontal plane form an inclined angle of 5-10 degrees, the position of the feed port is higher than that of the discharge port, and the rotary kiln is provided with a digital display regulator for regulating the heating temperature and the rotating speed of the rotary kiln.
In the above process, preferably, in step S2, the temperature is raised to 900 to 950 ℃ at a temperature raising rate of 1.5 to 2.5 ℃/min for presintering for 2.5 to 3.5 hours.
In the above process, preferably, in step S3, the addition amount of the grinding balls and water is 1:5 to 5.5: 1-2, the rotational speed of sanding is 40-50 r/min, the sanding time is 100-150 min, the secondary drying temperature is 100-110 ℃, and the secondary drying time is 10-20 min.
In the above-mentioned process, preferably, in step S4, the PVA binder is an aqueous PVA solution having a mass concentration of 8 to 12%, and the amount of the PVA binder is 8 to 10% of the mass of the secondary sanding material.
In the above process, preferably, in step S5, the sintering temperature is 1200 to 1250 ℃ and the sintering time is 4.5 to 5.5 hours.
(III) beneficial effects
The beneficial effects of the invention are as follows:
the invention provides a process method for improving the product performance by utilizing presintering equipment, which ensures that all particles of manganese zinc raw materials are heated uniformly; the same material enters the same collecting box from the discharge hole, so that the phenomenon of material mixing can not occur, the used presintering equipment has an external force knocking design, the main body of the presintering equipment can be knocked at regular time according to the rotating speed, the raw materials can be prevented from adhering to the inner wall of a kiln of the presintering equipment, and the utilization rate of the raw materials is improved; the self-provided inclined angle can automatically collect the manganese zinc raw materials to a discharge hole; after the presintering equipment is adopted for evenly heating presintering, the degrees of the formation manager of the raw material particles are consistent, and the control of the sintering process is facilitated.
Drawings
Fig. 1 is a schematic diagram of a burn-in apparatus used in the present invention.
[ reference numerals description ]
1: a main body of the burn-in apparatus;
2: a feed inlet;
3: a discharge port;
4: knocking a hammer;
5: inclination angle.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.
Example 1
The invention provides self-rotating pre-sintering equipment, as shown in figure 1, which comprises a main body 1 of the pre-sintering equipment, wherein the main body 1 of the pre-sintering equipment is a rectangular rotary kiln, a discharge port 3 and a feed port 2 are respectively arranged at the front end and the rear end of the main body 1 of the pre-sintering equipment, a knocking hammer 4 is arranged at the position, close to the feed port, of the upper end of the main body 1 of the pre-sintering equipment, the main body 1 of the pre-sintering equipment is knocked by the knocking hammer, the bottom of the main body 1 of the pre-sintering equipment is inclined at a small angle of about 5-10 degrees, namely, the inclination angle is 5-10 degrees, the feed port 2 is higher than the discharge port 3, and a digital display regulator is arranged on the rotary kiln for regulating the heating temperature and the rotating speed of the rotary kiln. During operation, raw materials subjected to primary mixing treatment enter the rotary kiln through the feed inlet, the presintering temperature of the kiln is set according to different materials, the temperature is generally 800-1100 ℃, and the kiln rotates at a constant speed (25+/-10) Hz. The manganese zinc ferrite raw material is heated uniformly in the kiln along with the rotation of the kiln, and all the materials can gradually move to the discharge hole due to the existence of the inclined angle. In the process, each raw material particle can contact the inner wall of the kiln, is heated uniformly, and has good crystal grain formation, so that the sintering process requirement is met. The digital display regulator can automatically control and record the kiln temperature, so that the influence of equipment errors on the raw material presintering effect is reduced. Finally, the raw materials are presintered and are collected into a raw material box from a discharge hole, so that the situation of mixing materials possibly caused by manual operation is avoided.
Example 2
A technological method for improving product performance by using presintering equipment comprises the following steps;
s1, weighing main components of the manganese-zinc ferrite material according to a proportion, wherein the mass ratio of the water in the manganese-zinc ferrite material to the water in the manganese-zinc ferrite material is 1:5:1, carrying out wet mixing and sanding on the ball mill at the rotating speed of 65 revolutions per minute, wherein the sanding time is 60 minutes; drying for 40 hours at the drying temperature of 100 ℃ to obtain a primary sand abrasive;
s2, presintering the primary sand grinding material by adopting the presintering equipment of the embodiment 1 to obtain presintering material, wherein the temperature is increased to 900 ℃ at the heating rate of 1.5 ℃/min during presintering, and presintering is carried out for 2.5 hours;
s3, adding impurities into the presintered material, wherein the mass ratio of the ball water is 1: (5-5.5):
(1-2), rotating the ball mill at 40-50 r/min, performing secondary wet sanding for the sanding time
100-150 min; secondary drying is carried out at the drying temperature of 100-110 ℃ for 10-20 min to obtain secondary sand grinding material;
s4, adding PVA binder into the secondary sand grinding material, wherein the mass concentration of the PVA binder is 8-12% of aqueous solution, the dosage of the PVA binder is 8-10% of the mass of the secondary sand grinding material, and granulating and then compacting the granules to obtain a blank;
s5, sintering the blank at 1200-1250 ℃ for 4.5-5.5 hours under the condition of controlling the oxygen partial pressure to be 3-5 vol percent, and obtaining the high-frequency high-magnetic-field low-loss manganese zinc ferrite material.
Example 3
A technological method for improving product performance by using presintering equipment comprises the following steps;
s1, weighing main components of the manganese-zinc ferrite material according to a proportion, wherein the mass ratio of the water in the manganese-zinc ferrite material to the water in the manganese-zinc ferrite material is 1:
5.5:2, carrying out wet mixing and sanding on the ball mill at the rotating speed of 75 revolutions per minute, wherein the sanding time is 90 minutes; drying for 50 hours at the drying temperature of 110 ℃ to obtain a primary sand abrasive;
s2, presintering the primary sand grinding material by adopting the presintering equipment of the embodiment 1 to obtain presintering material, wherein the temperature is increased to 950 ℃ at the heating rate of 2.5 ℃/min during presintering, and presintering is carried out for 3 hours;
s3, adding impurities into the presintered material, wherein the mass ratio of the ball water is 1:5.5:1, carrying out secondary wet sanding at the rotating speed of a ball mill of 40 revolutions per minute for 100 minutes; secondary drying is carried out at the drying temperature of 100 ℃ for 15min to obtain secondary sand milling materials;
s4, adding a PVA binder into the secondary sand grinding material, wherein the PVA binder is an aqueous solution with the mass concentration of 10%, the dosage of the PVA binder is 8% of the mass of the secondary sand grinding material, and granulating and then compacting the granules to obtain a blank;
s5, sintering the blank at 1200 ℃ for 4.5 hours under the condition of controlling the oxygen partial pressure to be 3vol percent, and obtaining the high-frequency high-magnetic-field low-loss manganese zinc ferrite material.
The materials of example 2 were prepared using a prior art through-the-air burn-in apparatus, and the burn-in effect was as shown in Table 1 below with the burn-in effects of examples 2 and 3.
TABLE 1
In conclusion, the ferrite powder presintering effect presintering by using the embodiment of the invention meets the actual production requirement, and the pressed product has high molding qualification rate and good product inductance consistency. And along with the increase of the presintering temperature and the presintering time of the rotary kiln, the crystal grain formation of the material can be stimulated, and the method is beneficial to the product molding and the electrical performance parameters.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art may make modifications or alterations to the above disclosed technical content to equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. A process for improving product performance using burn-in equipment, comprising:
s1, weighing main components of a manganese-zinc ferrite material according to a proportion, adding grinding balls and water to carry out wet mixing and sanding, and then carrying out primary drying to obtain a primary sand abrasive;
s2, presintering the primary sand abrasive material by adopting presintering equipment to obtain presintering materials;
s3, adding impurities into the presintered material, adding grinding balls and water for secondary wet grinding, and then performing secondary drying to obtain a secondary grinding material;
s4, adding PVA binder into the secondary sand grinding material, granulating, and then compacting and forming the granules to obtain a blank;
s5, sintering the blank under the condition of controlling the oxygen partial pressure to be 3-5 vol percent to obtain the high-frequency high-magnetic-field low-loss manganese zinc ferrite material.
2. The process according to claim 1, wherein in step S1, the grinding balls and water are added in the following amounts: ball: the water mass ratio is 1:5 to 5.5: 1-2, the rotating speed of the ball mill is 65-75 r/min, and the sanding time is 60-90 min.
3. The process according to claim 1, wherein in step S1, the primary drying is carried out at a temperature of 100 to 110 ℃ for a time of 40 to 50 hours.
4. The process as claimed in claim 1, wherein in step S2, the pre-sintering device comprises a main body of the pre-sintering device and a knocking hammer, the main body of the pre-sintering device is a rectangular rotary kiln, a discharge port and a feed port are respectively arranged at the front end and the rear end of the main body of the pre-sintering device, an inclination angle of 5-10 ° is formed between the bottom of the main body of the pre-sintering device and a horizontal plane, the position of the feed port is higher than that of the discharge port, and a digital display regulator is arranged on the rotary kiln for regulating the heating temperature and the rotating speed of the rotary kiln.
5. The process according to claim 1, wherein in step S2, the temperature is raised to 900 to 950 ℃ at a temperature rise rate of 1.5 to 2.5 ℃/min for presintering for 2.5 to 3.5 hours.
6. The process according to claim 1, wherein in step S3, the addition amount of the grinding balls and water is 1:5 to 5.5: 1-2, the rotational speed of sanding is 40-50 r/min, the sanding time is 100-150 min, the secondary drying temperature is 100-110 ℃, and the secondary drying time is 10-20 min.
7. The process according to claim 1, wherein in step S4, the PVA binder is an aqueous PVA solution having a mass concentration of 8 to 12%, and the amount of the PVA binder is 8 to 10% of the mass of the secondary sanding material.
8. The process according to claim 1, wherein in step S5, the sintering temperature is 1200 to 1250 ℃ and the sintering time is 4.5 to 5.5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211722271.9A CN116003120A (en) | 2022-12-30 | 2022-12-30 | Technological method for improving product performance by utilizing presintering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211722271.9A CN116003120A (en) | 2022-12-30 | 2022-12-30 | Technological method for improving product performance by utilizing presintering equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116003120A true CN116003120A (en) | 2023-04-25 |
Family
ID=86026546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211722271.9A Pending CN116003120A (en) | 2022-12-30 | 2022-12-30 | Technological method for improving product performance by utilizing presintering equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116003120A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2071317U (en) * | 1989-08-01 | 1991-02-13 | 泰州市无线电专用设备厂 | Outer heating rotary kiln for magnetic material sintering |
| CN1177728A (en) * | 1996-09-24 | 1998-04-01 | 夏重力 | Ferrite prefiring material rotary kiln |
| CN2289184Y (en) * | 1996-09-24 | 1998-08-26 | 夏重力 | Ferrite presintering charge rotary-drum furnace |
| CN2704009Y (en) * | 2004-06-10 | 2005-06-08 | 横店集团东磁有限公司 | Direct-heating type revolving kiln for preburning soft magnet oxysome material |
| US20090246526A1 (en) * | 2008-03-26 | 2009-10-01 | Powdertech Co., Ltd. | Ferrite particles and production method thereof |
| CN201808121U (en) * | 2010-10-22 | 2011-04-27 | 横店集团东磁股份有限公司 | Improved furnace presintering material sieving automatic mechanical rapping system |
| JP2017145175A (en) * | 2016-02-18 | 2017-08-24 | Tdk株式会社 | Ferrite sintered body, and ferrite core |
| CN109678483A (en) * | 2019-02-26 | 2019-04-26 | 南通华兴磁性材料有限公司 | The preparation method of wide temperature low-temperature coefficient low-consumption Mn-Zn ferrite material |
| CN110304913A (en) * | 2019-07-04 | 2019-10-08 | 湖北文理学院 | A kind of high frequency ultra-low loss Mn-Zn soft magnetic ferrite and preparation method thereof |
| CN112661502A (en) * | 2020-12-25 | 2021-04-16 | 横店集团东磁股份有限公司 | High-frequency high-magnetic-field low-loss manganese-zinc ferrite material and preparation method thereof |
| CN113087516A (en) * | 2021-03-31 | 2021-07-09 | 重庆上甲电子股份有限公司 | Low-temperature sintering method for preparing manganese-zinc ferrite by using industrial wastes |
-
2022
- 2022-12-30 CN CN202211722271.9A patent/CN116003120A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2071317U (en) * | 1989-08-01 | 1991-02-13 | 泰州市无线电专用设备厂 | Outer heating rotary kiln for magnetic material sintering |
| CN1177728A (en) * | 1996-09-24 | 1998-04-01 | 夏重力 | Ferrite prefiring material rotary kiln |
| CN2289184Y (en) * | 1996-09-24 | 1998-08-26 | 夏重力 | Ferrite presintering charge rotary-drum furnace |
| CN2704009Y (en) * | 2004-06-10 | 2005-06-08 | 横店集团东磁有限公司 | Direct-heating type revolving kiln for preburning soft magnet oxysome material |
| US20090246526A1 (en) * | 2008-03-26 | 2009-10-01 | Powdertech Co., Ltd. | Ferrite particles and production method thereof |
| CN201808121U (en) * | 2010-10-22 | 2011-04-27 | 横店集团东磁股份有限公司 | Improved furnace presintering material sieving automatic mechanical rapping system |
| JP2017145175A (en) * | 2016-02-18 | 2017-08-24 | Tdk株式会社 | Ferrite sintered body, and ferrite core |
| CN109678483A (en) * | 2019-02-26 | 2019-04-26 | 南通华兴磁性材料有限公司 | The preparation method of wide temperature low-temperature coefficient low-consumption Mn-Zn ferrite material |
| CN110304913A (en) * | 2019-07-04 | 2019-10-08 | 湖北文理学院 | A kind of high frequency ultra-low loss Mn-Zn soft magnetic ferrite and preparation method thereof |
| CN112661502A (en) * | 2020-12-25 | 2021-04-16 | 横店集团东磁股份有限公司 | High-frequency high-magnetic-field low-loss manganese-zinc ferrite material and preparation method thereof |
| CN113087516A (en) * | 2021-03-31 | 2021-07-09 | 重庆上甲电子股份有限公司 | Low-temperature sintering method for preparing manganese-zinc ferrite by using industrial wastes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104261811A (en) | High-performance permanent magnetic ferrite and manufacturing method thereof | |
| CN105669181B (en) | A kind of preparation method of fine and close small-grain Y IG ceramics | |
| JP2021011421A (en) | Preparation method of low loss garnet ferrite material | |
| CN103021608A (en) | High-gradient and high-capacity zinc oxide voltage dependent resistor disc and fabrication method thereof | |
| CN107673755A (en) | A kind of preparation method of permanent-magnet ferrite | |
| CN104230325A (en) | Preparation method of permanent magnetic ferrite pre-sintering material and preparation method of permanent magnetic ferrite | |
| CN107937716A (en) | A kind of iron ore pellets raw materials for production preparation method for being conducive to efficient pelletizing | |
| CN108863335A (en) | A kind of production method of permanent-magnet ferrite | |
| CN103787653A (en) | Preparation method of carbon-modified CaCu3Ti4O12 high dielectric material | |
| CN112194483A (en) | High-strength calcium-magnesium-titanium microwave dielectric ceramic material and preparation method thereof | |
| CN104803670B (en) | Double decker detector scintillating ceramic and preparation method thereof | |
| CN107705946A (en) | A kind of high-pass flow zinc oxide resistor sheet and its production technology | |
| CN116003120A (en) | Technological method for improving product performance by utilizing presintering equipment | |
| CN105777116B (en) | A kind of microwave-medium ceramics and preparation method thereof | |
| CN107555980B (en) | Method for manufacturing flaky crystal rare earth permanent magnetic ferrite material | |
| CN113620706A (en) | Microwave dielectric ceramic preparation method and microwave dielectric ceramic | |
| JP2020056828A5 (en) | ||
| CN102810663A (en) | Preparation method of lithium ion battery slurry, battery pole piece and lithium ion battery | |
| CN116715516A (en) | Rare earth doped ITO target and preparation method thereof | |
| CN116253556A (en) | Indium tin zinc oxide target material and preparation method thereof | |
| CN104909747A (en) | Preparation method for CaCu3Ti4-xZrxO12 ceramic with high dielectric constant and low dielectric loss | |
| CN104609855A (en) | BaTiO3-based PTC (Positive Temperature Coefficient) ceramic and preparation method thereof | |
| CN105884351B (en) | A kind of microwave-medium ceramics and preparation method thereof | |
| CN106518007A (en) | Compression moulding method of Nixing pottery | |
| CN112951532B (en) | High-gradient resistor disc and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |