CN107573055A - The processing method of magneto magnetic material - Google Patents
The processing method of magneto magnetic material Download PDFInfo
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- CN107573055A CN107573055A CN201710994333.4A CN201710994333A CN107573055A CN 107573055 A CN107573055 A CN 107573055A CN 201710994333 A CN201710994333 A CN 201710994333A CN 107573055 A CN107573055 A CN 107573055A
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- pellet
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Abstract
The invention discloses a kind of processing method of magneto magnetic material, comprise the following steps：A, batch mixing：Take in 0.3~1.5 part of 24~26 parts of barium carbonate, 100 parts of iron oxide red, silica input ball mill, add pure water mixing and ball milling；B, pellet is prepared using egg-type coal briquetting machine；C, pellet pre-burning：D, coarse powder of the granularity in 3.5 5.0um is processed into, obtains permanent ferrite prefiring material；E, 0.3~1.5 part of silica, 0.3~1.5 part of calcium carbonate, 10~15 parts of magnesium stearate are added to the raw material after coarse crushing, be well mixed, added water and steel ball, use ball mill to be milled to slurry granularity as 0.5 1.0 μm；F, it is compressing, while add alignment magnetic field and obtain green compact；G, it is sintered under Oxygen Condition, Temperature fall obtains finished product.The batch machining of the achievable magneto magnetic material of the present invention, products obtained therefrom HCJ, magnetic energy product meet the requirements.
Description
Technical field
The present invention relates to the processing method of magnetic material, and in particular to a kind of processing side of magneto magnetic material
Method.
Background technology
Permanent-magnet material no longer needs external energy just can establish very strong permanent-magnetic field after magnetizing, for substituting tradition
Rare-earth permanent-magnet electric machine not only efficiency high, and simple in construction, reliable, can also accomplish body made of the electrical excitation place of motor
Product is small, in light weight.
Magneto both can reach the incomparable high-performance of traditional electro-magnetic motor（Such as extra-high effect, ultrahigh-speed, extra-high
Response speed）, the specific type of electric machine for meeting specific run requirement can be constructed to again, so as to improve the property of supporting technical equipment
Energy and level, it is the important development direction of electromechanics trade industry restructuring.
Permanent-magnet material is an important factor for influenceing motor performance, before its mass production is magneto large-scale application
Put forward condition.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of processing method of magneto magnetic material, can be real
The batch machining of existing magneto magnetic material, products obtained therefrom HCJ, magnetic energy product meet the requirements.
In order to solve the above technical problems, the processing method of the magneto magnetic material of the present invention comprises the following steps：
A, compounding process：
By weight, take in 0.3~1.5 part of 24~26 parts of barium carbonate, 100 parts of iron oxide red, silica input ball mill, add pure
Water mixing and ball milling；
B, pellet is molded：
The raw material mixed is shaped into 110 ± 10 millimeters of diameter, 70 ± 10 millimeters of height and centre using egg-type coal briquetting machine has
The pellet of through hole；
C, pellet pre-burning：
Pre-burning is carried out to shaping pellet using ejection plate kiln, the ejection plate kiln is provided with heating zone, pre-burning area, cooling area；
Shaping pellet is pushed into heating zone, natural gas and enough air burning is passed through, is heated 10 minutes under the conditions of 850~950 DEG C；
Then shaping pellet is pushed into pre-burning area, is passed through natural gas and enough air burning, 120 are heated under the conditions of 1300 ± 50 DEG C
Minute；
Will the shaping pellet push-in near room temperature in cooling area；
D, coarse crushing：
Coarse powder of the granularity in 3.5-5.0um is processed into through broken, corase grind, vibrating ball-mill fine grinding, obtains permanent ferrite prefiring material；
E, secondary ball milling
0.3~1.5 part of silica, 0.3~1.5 part of calcium carbonate, 10~15 parts of magnesium stearate are added to the raw material after coarse crushing,
It is well mixed, water and steel ball are added, uses ball mill to be milled to slurry granularity as 0.5-1.0 μm；
F, it is compressing
Slurry is subjected to dewater treatment, it is compressing under conditions of pressure is 20MPa afterwards, while add 5000-8000A/m
Alignment magnetic field, obtain green compact；
G, green compact are sintered under Oxygen Condition, sintering temperature is 1200-1300 DEG C, keeps 2-3h, subsequent Temperature fall
Obtain magneto magnetic material.
In the step A, iron oxide red purity ＞ 95%.In the step A, granularity≤1.0um after raw material ball milling.
In the step B, gained pellet moisture is controlled below 10%.
Advantages of the present invention is embodied in, and A, pre-sinter process are reasonable in design, is advantageous to fully contacting for iron oxide red and dispensing, pre-burning
When solid phase reaction it is abundant.B, using secondary plus general labourer's skill, playing prevents crystal grain expansion, reduction from needing sintering temperature, improving material
The effects such as performance, increase mechanical strength, increase toughness.C, after testing, the index such as its coercivity, remanent magnetism reaches will for products obtained therefrom
Ask.
Embodiment
Embodiment one
A, compounding process：
By weight, take in barium carbonate 258kg, iron oxide red 1000kg, silica 5kg input ball mills, add pure water mixing ball
Mill；
B, pellet is molded：
The raw material mixed is shaped into 110 ± 10 millimeters of diameter, 70 ± 10 millimeters of height and centre using egg-type coal briquetting machine has
The pellet of through hole；
C, pellet pre-burning：
Pre-burning is carried out to shaping pellet using ejection plate kiln, the ejection plate kiln is provided with heating zone, pre-burning area, cooling area；
Shaping pellet is pushed into heating zone, natural gas and enough air burning is passed through, is heated 10 minutes under the conditions of 850~950 DEG C；
Then shaping pellet is pushed into pre-burning area, is passed through natural gas and enough air burning, 120 are heated under the conditions of 1300 ± 50 DEG C
Minute；
Will the shaping pellet push-in near room temperature in cooling area；
D, coarse crushing：
Coarse powder of the granularity in 3.5-5.0um is processed into through broken, corase grind, vibrating ball-mill fine grinding, obtains permanent ferrite prefiring material；
E, secondary ball milling
Calcium carbonate 5kg, magnesium stearate 10kg are added to the raw material after coarse crushing, is well mixed, water and steel ball are added, using ball milling
Machine is milled to slurry granularity as 0.5-1.0 μm；
F, it is compressing
Slurry is subjected to dewater treatment, it is compressing under conditions of pressure is 20MPa afterwards, while add 5000-8000A/m
Alignment magnetic field, obtain green compact；
G, green compact are sintered under Oxygen Condition, sintering temperature is 1200-1300 DEG C, keeps 2-3h, subsequent Temperature fall
Obtain magneto magnetic material.
Embodiment two
A, compounding process：
By weight, take in barium carbonate 245kg, iron oxide red 1000kg, silica 3kg input ball mills, add pure water mixing ball
Mill；
B, pellet is molded：
The raw material mixed is shaped into 110 ± 10 millimeters of diameter, 70 ± 10 millimeters of height and centre using egg-type coal briquetting machine has
The pellet of through hole；
C, pellet pre-burning：
Pre-burning is carried out to shaping pellet using ejection plate kiln, the ejection plate kiln is provided with heating zone, pre-burning area, cooling area；
Shaping pellet is pushed into heating zone, natural gas and enough air burning is passed through, is heated 10 minutes under the conditions of 850~950 DEG C；
Then shaping pellet is pushed into pre-burning area, is passed through natural gas and enough air burning, 120 are heated under the conditions of 1300 ± 50 DEG C
Minute；
Will the shaping pellet push-in near room temperature in cooling area；
D, coarse crushing：
Coarse powder of the granularity in 3.5-5.0um is processed into through broken, corase grind, vibrating ball-mill fine grinding, obtains permanent ferrite prefiring material；
E, secondary ball milling
Calcium carbonate 6kg, magnesium stearate 11kg are added to the raw material after coarse crushing, is well mixed, water and steel ball are added, using ball milling
Machine is milled to slurry granularity as 0.5-1.0 μm；
F, it is compressing
Slurry is subjected to dewater treatment, it is compressing under conditions of pressure is 20MPa afterwards, while add 5000-8000A/m
Alignment magnetic field, obtain green compact；
G, green compact are sintered under Oxygen Condition, sintering temperature is 1200-1300 DEG C, keeps 2-3h, subsequent Temperature fall
Obtain magneto magnetic material.
Embodiment three
A, compounding process：
By weight, take in barium carbonate 260kg, iron oxide red 1000kg, silica 6kg input ball mills, add pure water mixing ball
Mill；
B, pellet is molded：
The raw material mixed is shaped into 110 ± 10 millimeters of diameter, 70 ± 10 millimeters of height and centre using egg-type coal briquetting machine has
The pellet of through hole；
C, pellet pre-burning：
Pre-burning is carried out to shaping pellet using ejection plate kiln, the ejection plate kiln is provided with heating zone, pre-burning area, cooling area；
Shaping pellet is pushed into heating zone, natural gas and enough air burning is passed through, is heated 10 minutes under the conditions of 850~950 DEG C；
Then shaping pellet is pushed into pre-burning area, is passed through natural gas and enough air burning, 120 are heated under the conditions of 1300 ± 50 DEG C
Minute；
Will the shaping pellet push-in near room temperature in cooling area；
D, coarse crushing：
Coarse powder of the granularity in 3.5-5.0um is processed into through broken, corase grind, vibrating ball-mill fine grinding, obtains permanent ferrite prefiring material；
E, secondary ball milling
Calcium carbonate 6kg, magnesium stearate 11kg are added to the raw material after coarse crushing, is well mixed, water and steel ball are added, using ball milling
Machine is milled to slurry granularity as 0.5-1.0 μm；
F, it is compressing
Slurry is subjected to dewater treatment, it is compressing under conditions of pressure is 20MPa afterwards, while add 5000-8000A/m
Alignment magnetic field, obtain green compact；
G, green compact are sintered under Oxygen Condition, sintering temperature is 1200-1300 DEG C, keeps 2-3h, subsequent Temperature fall
Obtain magneto magnetic material.
Embodiment Product checking index
The embodiment of the present invention includes but is not limited to above-described embodiment, without departing substantially from of the invention spiritual and its essence
In the case of, those skilled in the art can make various corresponding changes and deformation according to the present invention, but still fall into this
The protection domain of invention.
Claims (4)
1. a kind of processing method of magneto magnetic material, comprises the following steps：
A, compounding process：
By weight, take in 0.3~1.5 part of 24~26 parts of barium carbonate, 100 parts of iron oxide red, silica input ball mill, add pure
Water mixing and ball milling；
B, pellet is molded：
The raw material mixed is shaped into 110 ± 10 millimeters of diameter, 70 ± 10 millimeters of height and centre using egg-type coal briquetting machine has
The pellet of through hole；
C, pellet pre-burning：
Pre-burning is carried out to shaping pellet using ejection plate kiln, the ejection plate kiln is provided with heating zone, pre-burning area, cooling area；
Shaping pellet is pushed into heating zone, natural gas and enough air burning is passed through, is heated 10 minutes under the conditions of 850~950 DEG C；
Then shaping pellet is pushed into pre-burning area, is passed through natural gas and enough air burning, 120 are heated under the conditions of 1300 ± 50 DEG C
Minute；
Will the shaping pellet push-in near room temperature in cooling area；
D, coarse crushing：
Coarse powder of the granularity in 3.5-5.0um is processed into through broken, corase grind, vibrating ball-mill fine grinding, obtains permanent ferrite prefiring material；
E, secondary ball milling
0.3~1.5 part of calcium carbonate, 10~15 parts of magnesium stearate are added to the raw material after coarse crushing, is well mixed, adds water and steel
Ball, ball mill is used to be milled to slurry granularity as 0.5-1.0 μm；
F, it is compressing
Slurry is subjected to dewater treatment, it is compressing under conditions of pressure is 20MPa afterwards, while add 5000-8000A/m
Alignment magnetic field, obtain green compact；
G, green compact are sintered under Oxygen Condition, sintering temperature is 1200-1300 DEG C, keeps 2-3h, subsequent Temperature fall
Obtain magneto magnetic material.
2. the processing method of permanent ferrite prefiring material as claimed in claim 1, it is characterised in that：In the step A, iron oxide red
Purity ＞ 95%.
3. the processing method of permanent ferrite prefiring material as claimed in claim 1, it is characterised in that：In the step A, raw material
Granularity≤1.0um after ball milling.
4. the processing method of permanent ferrite prefiring material as claimed in claim 1, it is characterised in that：In the step B, gained
Pellet moisture is controlled below 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710994333.4A CN107573055A (en) | 2017-10-23 | 2017-10-23 | The processing method of magneto magnetic material |
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| CN201710994333.4A CN107573055A (en) | 2017-10-23 | 2017-10-23 | The processing method of magneto magnetic material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302783A (en) * | 2020-04-07 | 2020-06-19 | 南京溧水金洪磁性元件有限公司 | Production method and use method of permanent magnetic ferrite for low-noise permanent magnet motor |
| CN111453976A (en) * | 2020-04-07 | 2020-07-28 | 南京溧水金洪磁性元件有限公司 | Preparation process and use method of permanent magnetic ferrite ball milling mixed material |
| CN115724655A (en) * | 2021-08-25 | 2023-03-03 | 横店集团东磁股份有限公司 | Method for preparing high-performance permanent magnetic ferrite material from low-purity iron oxide red |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815933A (en) * | 2012-09-10 | 2012-12-12 | 浙江省东阳市中航磁性有限公司 | Permanent magnet barium ferrite material and preparation method thereof |
| CN103964829A (en) * | 2014-05-07 | 2014-08-06 | 宿州学院 | Preparation and sintering of single-aperture blank of oxygen self-supported permanent magnetic ferrite pre-sintering material |
| CN104003701A (en) * | 2014-02-27 | 2014-08-27 | 横店集团东磁股份有限公司 | Preparing method of rare-earth-free permanent-magnetic ferrite materials |
-
2017
- 2017-10-23 CN CN201710994333.4A patent/CN107573055A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815933A (en) * | 2012-09-10 | 2012-12-12 | 浙江省东阳市中航磁性有限公司 | Permanent magnet barium ferrite material and preparation method thereof |
| CN104003701A (en) * | 2014-02-27 | 2014-08-27 | 横店集团东磁股份有限公司 | Preparing method of rare-earth-free permanent-magnetic ferrite materials |
| CN103964829A (en) * | 2014-05-07 | 2014-08-06 | 宿州学院 | Preparation and sintering of single-aperture blank of oxygen self-supported permanent magnetic ferrite pre-sintering material |
Non-Patent Citations (1)
| Title |
|---|
| 夏德贵等: "《软磁铁氧体制制造原理与技术》", 31 December 2010, 陕西科学技术出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302783A (en) * | 2020-04-07 | 2020-06-19 | 南京溧水金洪磁性元件有限公司 | Production method and use method of permanent magnetic ferrite for low-noise permanent magnet motor |
| CN111453976A (en) * | 2020-04-07 | 2020-07-28 | 南京溧水金洪磁性元件有限公司 | Preparation process and use method of permanent magnetic ferrite ball milling mixed material |
| CN115724655A (en) * | 2021-08-25 | 2023-03-03 | 横店集团东磁股份有限公司 | Method for preparing high-performance permanent magnetic ferrite material from low-purity iron oxide red |
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