CN203495237U - Grinding device for flaky metal powder - Google Patents
Grinding device for flaky metal powder Download PDFInfo
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- CN203495237U CN203495237U CN201320352575.0U CN201320352575U CN203495237U CN 203495237 U CN203495237 U CN 203495237U CN 201320352575 U CN201320352575 U CN 201320352575U CN 203495237 U CN203495237 U CN 203495237U
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Abstract
The utility model discloses a grinding device for flaky metal powder. The grinding device comprises a driving barrel, a primary grinding cylinder, a secondary grinding cylinder, a grinding roller and a sealing component, wherein the driving barrel is a barrel-shaped structure of which one end is sealed; the primary grinding cylinder, the secondary grinding cylinder and the grinding roller are sealed in the driving barrel through the sealing component, and are slightly shorter than an inner cavity formed by the driving barrel and the sealing component; the primary grinding cylinder is positioned in the driving barrel, and the external diameter bottom of the primary grinding cylinder contacts with the internal diameter bottom of the driving barrel; the secondary grinding cylinder is positioned in the primary grinding cylinder, and the external diameter bottom of the secondary grinding cylinder contacts with the internal diameter bottom of the primary grinding cylinder; the grinding roller is positioned in the secondary grinding cylinder, and the external diameter bottom of the grinding roller contacts with the internal diameter bottom of the secondary grinding cylinder; each part rotates under the action of frictional force between one another; grinding pressure is formed by gravity; calendering is implemented by differences of rotating linear speed. The grinding device has the beneficial effects that machined flaky micro-powder is high in flattening ratio, stable in quality and higher in machining speed and efficiency; moreover, the device is long in service life.
Description
Technical field
The utility model patent relates to a kind of rolling device of metal dust, particularly the rolling device at a kind of scaled metal powder end.Electromagnetic Interference) etc. the flakey soft magnetic metal micro mist of patent device manufacture is mainly used in making the magnetic raw material that flexible electrical electromagnetic wave interference absorbs magnetic sheet, and this flexibility magnetic sheet preferably adopts (the RF identification: the Radio Frequency Identification) electronic tag of technology and EMC (electromagnetic compatibility: Electromagnetic Compatibility or claim the i.e. anti-electromagnetic interference of EMI: use at RFID.
Background technology
REID RFID, as the core link of realizing Internet of Things article identification basis, must be used flexible magnetic sheet.It is made with the scaled metal powder end of very thin (1 μ m is following), its energy absorbing high-frequency electromagnetic interference wave, and can effectively prevent the interference of metal object reflection to reader identification RFID label.At Internet of Things communications band energy, it can improve the effective depth of antenna, increases communication distance.
For traditional anti-EMI material, spherical, elliposoidal, bulk and irregularly shaped metallic magnetic powder are made.In the anti-EMI magnetic sheet of flexibility that the magnetic-particle of these patterns is made, there is a large amount of gaps, easily cause part Electromgnetically-transparent, thereby its absorptivity to high-frequency electromagnetic disturbing wave is lower.With the anti-EMI magnetic sheet that flakey soft magnetic metal micro mist is made, it is flakey soft magnetic metal micropowder tablet battle array, once electromagnetic interference wave enters after this sheet battle array, although through reflecting continuously and reflecting, also be difficult to through sheet battle array, yet, in reflection and refracting process continuously, the energy of electromagnetic interference wave is progressively decayed, approach exhaustion, and dissipates with the form of heat energy.
For spherical, elliposoidal, bulk and erose soft magnetic metal powder being processed into the equipment of lepidiod metal dust, be mainly high energy ball mill or planetary ball mill at present.High energy ball mill or planetary ball mill are to utilize the mutual method of clashing into of ball of high-speed motion to realize flattening.Its shortcoming is: the shock between ball and ball is point and the shock of putting, and its rum point is few, impulsive force is large.At the ball milling initial stage, most of particles hit can be become to the flat particle that thickness is thicker.Along with the growth of Ball-milling Time, the reduction of powder thickness, the ability withstanding shocks declines, and shock can make leafy powder become fragment fiercely, thereby causes the ratio of flat powder to reduce.
Summary of the invention
This patent is the shortcoming for lepidiod metal dust processing for high energy ball mill and planetary ball mill, and the rolling device at a kind of scaled metal powder end is provided, and when the present invention processes flakey micropowder, flattening ratio is high, processing more fast, more efficient.
Technical scheme: the rolling device at a kind of scaled metal powder end, comprises that drive roll, one-level are ground cylinder, secondary grinds cylinder, roller and black box; Described drive roll is the tubular structure of one end sealing, described black box by one-level grind cylinder, secondary grinds cylinder and roller is sealed in drive roll inside, and one-level is ground the length that is shorter in length than drive roll and the internal cavities of black box formation that cylinder, secondary grind cylinder and roller; Described one-level is ground cylinder and is positioned at drive roll inside, and one-level is ground cylinder external diameter bottom and contacted with drive roll internal diameter bottom; Described secondary grinds cylinder and is positioned at one-level to grind cylinder inner, and secondary grinds cylinder external diameter bottom and contacts bottom grinding cylinder internal diameter with one-level; Described roller is positioned at secondary and grinds cylinder inside, and roller external diameter bottom is ground cylinder internal diameter bottom with secondary and contacted.
Wherein, described black box comprises end cover, fastening bolt and fixed support, and described fastening bolt is through the screwed hole fixing seal end cap on fixed support.
Wherein, described drive roll and one-level are ground between cylinder and are provided with the first roller rod, and the external diameter of described the first roller rod is tangent with drive roll inwall and one-level stone roller drum outer wall respectively.
Wherein, described one-level is ground cylinder and is ground between cylinder and be provided with second roller rod with secondary, and the external diameter of described second roller rod grinds cylinder inwall with one-level respectively and secondary stone roller drum outer wall is tangent.
Wherein, described secondary grinds between cylinder and roller and is provided with the 3rd roller rod, and the external diameter of described the 3rd roller rod is tangent with secondary stone roller cylinder inwall and roller outer wall respectively.
In order to reach better rolling effect, described the first roller rod, second roller is excellent and arranging of the 3rd roller rod can be combination of two or three roller rods are set simultaneously.
Preference, the external diameter of described drive roll and length ratio are 1:1.5～1:2.
In order to improve wearability, increase the service life, described one-level is ground cylinder, secondary stone roller cylinder, roller, the first roller rod, second roller is excellent and the case hardness of the 3rd roller rod is greater than Rockwell hardness 60, and the depth of quenching is greater than 1.0mm.
In order to reach better rolling effect, the axiality that described one-level is ground cylinder, the inside and outside edge of secondary stone roller cylinder is less than 0.01mm; Roller, the first roller rod, second roller is excellent and the 3rd roller rod outside diameter axle degree is less than 0.01mm.
In order to reach better rolling effect, described one-level is ground on cylinder and secondary stone roller cylinder circumference and is evenly equipped with the smooth round and smooth through hole of end face.
Operation principle: the frictional force producing by gravity is rotated all parts; The pressure initiation grinding pressure that gravity produces; Rotational line speed each other there are differences and realizes calendering.Under the double action of gravity and frictional force, drive roll high speed rotating, drives one-level to grind cylinder and rotates, and then, drives successively secondary to grind cylinder, grinds rod, the excellent high speed rotating of roller.Due to Action of Gravity Field, roller to secondary grind cylinder, secondary grind cylinder to one-level grind cylinder, one-level is ground cylinder to drive roll, provides in the vertical direction downward pressure, this pressure is exactly their grinding pressures to Magnaglo.Because they exist slip each other, the linear velocity from cylinder to roller reduces successively, so, formed again the shearing force to material between mutually.Grinding pressure pushes Magnaglo mutually, and larger grinding pressure is enough to force Magnaglo to produce plastic deformation, and its thickness is reduced, and extends to length, width.Drive roll and one-level are ground cylinder, one-level grinds cylinder and secondary grinds cylinder, secondary grinds the shearing force forming between cylinder and roller, have accelerated again Magnaglo and have extended to length, width, have played the effect of calendering.Magnaglo is after decentralized medium disperses, because rotation at a high speed forms suspended state.The particle of same density, along with the difference of granular size, the critical speed of its suspension is different, and the suspension critical speed that large particle needs is high, and the suspension critical speed that little particle needs is low.Negotiation speed regulates, can make little, lepidiod micro mist suspends, and makes particles settling large, that thickness is thick.They are deposited to drive roll and one-level and grind cylinder, one-level and grind that cylinder and secondary grind cylinder, secondary grinds region tangent between cylinder and roller, are just continued to process.From another angle, the powder that density is identical, particle is larger, quality is larger, at speed and the radius of gyration identical in the situation that, its centrifugal force is just larger, so, more easily move to drive roll and one-level and grind cylinder, one-level and grind cylinder and secondary and grind region tangent between cylinder, secondary stone roller tin and roller.The subsiding movement passage that aperture on the wall of one-level stone roller cylinder, secondary stone roller cylinder designs for these big particles just.For flakey micro mist, even if itself and spherical, ellipsoid shape, blocky-shaped particle is identical in quality, but the resistance of motion of flakelike powder is larger, therefore, also not free settling or because of centrifugal action reach that drive roll and one-level grind that cylinder, one-level grind that cylinder and secondary grind that cylinder, secondary grind tin and roller between tangent region.The first roller rod that diameter is less, second roller is excellent and the effect of the 3rd roller rod is to provide less calendering force, as a supplement, meanwhile, prevents that powder is bonded on wall, cause roll inhomogeneous.
As above said, according to the utility model patent, spherical, elliposoidal, bulk and erose metal fine powder can be rolled into flakey metal fine powder.The average thickness of scale like powder is 0.1 μ m～1.0 μ m, aspect ratio 150～1500, and average grain diameter D50 is 30 μ m～100 μ m.
Beneficial effect: the utility model patent flat powder in process is higher, the scale like powder steady quality processing, processing more fast, more efficient; And the long service life of device.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model patent;
Fig. 2 is the structural representation of the utility model patent cross section;
Fig. 3 is the structural representation that the utility model patent is ground cylinder.
The specific embodiment
In order to make object, technical scheme and the advantage of the utility model patent clearer, below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in Figure 1, the rolling device at a kind of scaled metal powder end, comprises that drive roll 1, one-level are ground cylinder 2, secondary grinds cylinder 3, roller 4 and black box 5; Described drive roll 1 is the tubular structure of one end sealing, described black box 5 by one-level grind cylinder 2, secondary grinds cylinder 3 and roller 4 is sealed in drive roll 1 inside, and one-level is ground the length that length that cylinder 2, secondary grind cylinder 3 and roller 4 is slightly less than the internal cavities that drive roll 1 and black box 5 form; Described one-level is ground cylinder 2 and is positioned at drive roll 1 inside, and one-level is ground cylinder 2 external diameter bottoms and contacted with drive roll 1 internal diameter bottom; Described secondary grinds cylinder 3 and is positioned at one-level stone roller cylinder 2 inside, and secondary grinds cylinder 3 external diameter bottoms and contacts with one-level stone roller cylinder 2 internal diameters bottoms; Described roller 4 is positioned at secondary and grinds cylinder 3 inside, and roller 4 external diameter bottoms are ground cylinder 3 internal diameter bottoms with secondary and contacted.Described black box 5 comprises end cover 51, fastening bolt 52 and fixed support 53, and described fastening bolt 52 is through the screwed hole fixing seal end cap 51 on fixed support 53.
As shown in Figure 2, described drive roll 1 and one-level are ground between cylinder 2 and are provided with the first roller rod 6, and the external diameter of described the first roller rod 6 is tangent with drive roll 1 inwall and one-level stone roller cylinder 2 outer walls respectively.Described one-level is ground cylinder 2 and is ground between cylinder 3 and be provided with second roller rod 7 with secondary, and the external diameter of described second roller rod 7 grinds cylinder 2 inwalls and secondary with one-level respectively, and to grind 3 outer wall tangent.Described secondary grinds between cylinder 3 and roller 4 and is provided with the 3rd roller rod 8, and the external diameter of described the 3rd roller rod 8 is tangent with secondary stone roller cylinder 3 inwalls and roller 4 outer walls respectively.Drive roll 1, by motor and actuator drives, is designed with frequency converter therebetween, so that the rotational line speed needing to be provided.The external diameter of drive roll and length ratio are 1:1.5～1:2.Drive roll 1 is with the linear velocity High Rotation Speed of 100 ms/min～400 ms/min; Thereby drive one-level to grind cylinder 2 High Rotation Speeds; One-level is ground cylinder 2 and is driven secondary to grind cylinder 3 High Rotation Speeds again; Secondary grinds cylinder 3 and drives roller 4 High Rotation Speeds again.Because it exists slip each other, therefore, from drive roll 1 to one-level, grind cylinder 2, from one-level, grind cylinder 2 and grind cylinder 3 to secondary, from secondary, grind cylinder 3 to roller 4, rotational line speed reduces gradually.The wall that one-level is ground cylinder 2, secondary stone roller cylinder 3 is thicker, and the diameter of roller 4 is larger, to have larger gravity, so that larger grinding pressure to be provided, rolls Magnaglo.
As shown in Figure 3, on the wall of one-level stone roller cylinder 2 and secondary stone roller cylinder 3, there is aperture, so that slurry shuttle therein.
The utility model patent is in order to provide enough grinding pressures, and the quality of roller 4 should be enough large, and one-level is ground cylinder 2 also should be enough thick with the wall thickness of secondary stone roller cylinder 3.Because gravity is large, when running up, also be there is to very large grinding pressure in material.Under powerful grinding pressure effect, between particle, the pressure of extruding is enough to force particle generation plastic deformation mutually, and its thickness is reduced, and width, lengthwise dimension increase.That goes round and begins again rolls for a long time, make its thickness more and more thinner, and the size of width, length direction is increasing, finally reaches pattern, the dimensional requirement of regulation.
The utility model patent raising wearability, one-level is ground cylinder 2 and is greater than Rockwell hardness 60 with the case hardness that secondary grinds cylinder 3, roller 4 and the first roller rod 6, second roller rod 7, the 3rd roller rod 8, more than depth of quenching 1.0mm.Surface roughness is RaRa0.10～Ra0.50.In order to reach better rolling effect, one-level is ground cylinder 2 should be less than 0.01mm with the axiality that secondary grinds the inside and outside edge of cylinder 3; The outer axiality of roller 4 and the first roller rod 6, second roller rod 7, the 3rd roller rod 8 also should be less than 0.01mm.One-level is ground cylinder 2 and is less than Ф 5mm with the diameter that secondary grinds the upper hole of cylinder 3, and the end face in hole should be smooth, round and smooth.
It is identical with the length that secondary grinds cylinder 3, roller 4 and the first roller rod 6, second roller rod 7, the 3rd roller rod 8 that one-level is ground cylinder 2, is slightly less than the inner length of drive roll, to guarantee its basic and rotation parallel motion.
Embodiment 1
With ethanol, make decentralized medium, the volume ratio of decentralized medium and alloyed powder is 6:1, and the mass ratio antirust, lubricant quantity is metal dust is 0.2%.The internal diameter of Patent equipment drive roll 1 of the present invention is Ф 200mm; One-level is ground the length dimension of cylinder 2, secondary stone roller cylinder 3, roller 4 and the first roller rod 6, second roller rod 7, the 3rd roller rod 8 than the short 1mm～5mm of drive roll 1 inner length size.It is 15:1 that one-level is ground cylinder 2, secondary stone roller cylinder 3, roller 4 and the first roller rod 6, second roller rod 7, the quality of the 3rd roller rod 8 and the ratio of alloyed powder quality.The linear velocity of the inwall of drive roll 1 is 300 ms/min.After continuous operation 60 hours, sampling.The average thickness of sample is 0.70 μ m, and aspect ratio is about 650.With laser particle analyzer, measure, its average grain diameter D50 is 65 μ m.
Claims (8)
1. the rolling device at scaled metal powder end, is characterized in that: comprise that drive roll (1), one-level are ground cylinder (2), secondary grinds cylinder (3), roller (4) and black box (5); Described drive roll (1) is the tubular structure of one end sealing, described black box (5) grinds tin (2), secondary stone roller tin (3) and a roller (4) by one-level and is sealed in drive roll (1) inside, and the length of the internal cavities that is shorter in length than drive roll (1) and black box (5) formation of one-level stone roller cylinder (2), secondary stone roller tin (3) and roller (4); Described one-level is ground cylinder (2) and is positioned at drive roll (1) inside, and one-level is ground cylinder (2) external diameter bottom and contacted with drive roll (1) internal diameter bottom; Described secondary grinds cylinder (3) and is positioned at one-level stone roller cylinder (2) inside, and secondary grinds cylinder (3) external diameter bottom and contacts with one-level stone roller cylinder (2) internal diameter bottom; Described roller (4) is positioned at secondary and grinds cylinder (3) inside, and roller (4) external diameter bottom is ground cylinder (3) internal diameter bottom with secondary and contacted.
2. the rolling device at scaled metal powder according to claim 1 end, it is characterized in that: described black box (5) comprises end cover (51), fastening bolt (52) and fixed support (53), described fastening bolt (52) is through the screwed hole fixing seal end cap (51) on fixed support (53).
3. the rolling device at scaled metal powder according to claim 1 end, it is characterized in that: described drive roll (1) and one-level are ground between cylinder (2) and be provided with the first roller rod (6), and the external diameter of described the first roller rod (6) is tangent with drive roll (1) inwall and one-level stone roller cylinder (2) outer wall respectively.
4. according to the rolling device at the scaled metal powder end described in claim 1 or 3, it is characterized in that: described one-level is ground between cylinder (2) and secondary stone roller cylinder (3) and is provided with second roller rod (7), the external diameter of described second roller rod (7) grinds cylinder (2) inwall with one-level respectively and secondary stone roller cylinder (3) outer wall is tangent.
5. according to the rolling device at the scaled metal powder end described in claim 1 or 3, it is characterized in that: described secondary grinds between cylinder (3) and roller (4) and is provided with the 3rd roller rod (8), and the external diameter of described the 3rd roller rod (8) is tangent with secondary stone roller cylinder (3) inwall and roller (4) outer wall respectively.
6. according to the rolling device at the scaled metal powder end described in claim 1 or 3, it is characterized in that: described one-level is ground between cylinder (2) and secondary stone roller cylinder (3) and is provided with second roller rod (7), the external diameter of described second roller rod (7) grinds cylinder (2) inwall with one-level respectively and secondary stone roller cylinder (3) outer wall is tangent; Described secondary grinds between cylinder (3) and roller (4) and is provided with the 3rd roller rod (8), and the external diameter of described the 3rd roller rod (8) is tangent with secondary stone roller cylinder (3) inwall and roller (4) outer wall respectively.
7. the rolling device at scaled metal powder according to claim 1 end, is characterized in that: the external diameter of described drive roll (1) and length ratio are 1:1.5～1:2.
8. the rolling device at scaled metal powder according to claim 1 end, is characterized in that: described one-level is ground on cylinder (2) and secondary stone roller cylinder (3) circumference and is evenly equipped with the smooth round and smooth through hole of end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320352575.0U CN203495237U (en) | 2013-06-19 | 2013-06-19 | Grinding device for flaky metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320352575.0U CN203495237U (en) | 2013-06-19 | 2013-06-19 | Grinding device for flaky metal powder |
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| Publication Number | Publication Date |
|---|---|
| CN203495237U true CN203495237U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320352575.0U Expired - Fee Related CN203495237U (en) | 2013-06-19 | 2013-06-19 | Grinding device for flaky metal powder |
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| CN (1) | CN203495237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418797A (en) * | 2013-06-19 | 2013-12-04 | 镇江宝纳电磁新材料有限公司 | Grinding device for scale-like metal powder |
-
2013
- 2013-06-19 CN CN201320352575.0U patent/CN203495237U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418797A (en) * | 2013-06-19 | 2013-12-04 | 镇江宝纳电磁新材料有限公司 | Grinding device for scale-like metal powder |
| CN103418797B (en) * | 2013-06-19 | 2016-12-28 | 镇江宝纳电磁新材料有限公司 | The rolling device of flaky metal powder |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20150619 |
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| EXPY | Termination of patent right or utility model |