CN103480853B - A kind of multistage rotating disk type roll grinding device for rolling flaky metal powder - Google Patents
A kind of multistage rotating disk type roll grinding device for rolling flaky metal powder Download PDFInfo
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- CN103480853B CN103480853B CN201310466024.1A CN201310466024A CN103480853B CN 103480853 B CN103480853 B CN 103480853B CN 201310466024 A CN201310466024 A CN 201310466024A CN 103480853 B CN103480853 B CN 103480853B
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- 239000000843 powder Substances 0.000 title claims abstract description 36
- 238000000227 grinding Methods 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 title claims abstract description 27
- 238000005096 rolling process Methods 0.000 title claims abstract description 21
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 18
- 230000033001 locomotion Effects 0.000 abstract description 14
- 239000000654 additive Substances 0.000 abstract description 4
- 230000000996 additive effect Effects 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- 238000010008 shearing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000006249 magnetic particle Substances 0.000 description 3
- 239000006247 magnetic powder Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005183 dynamical system Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Crushing And Grinding (AREA)
- Powder Metallurgy (AREA)
Abstract
A kind of multistage rotating disk type roll grinding device for rolling flaky metal powder of disclosure, this device is mainly in series by several rotating disk type roll grinding device, and each rotating disk type roll grinding device includes tank body, line shaft, capstan support and capstan.Described line shaft is positioned at described tank body central lower, is vertical setting, and is provided with multiple capstan in described tank body, and described line shaft is connected in " Gui " word by capstan support with described capstan.Line shaft drives capstan high speed rotating, and capstan just drives roller high speed rotating；Magnaglo, disperse medium and additive are become fluid by high-speed motion；Adjust rotary speed, so that it may so that little or flattening powder suspension, and bulky grain is deposited to fluid lower floor, when it is brought to or moves to below the roller of high speed rotating, just rolled, rolled, through rolling repeatedly step by step, rolling, and made its flattening.The flat powder ratio of present invention processing is high, and the scale like powder steady quality processed is processed more rapid, more efficient；For medium quantity batch processing and long service life.
Description
Technical field
The present invention relates to the rolling device of a kind of metal dust, particularly to a kind of multistage rotating disk type roll grinding device for rolling flaky metal powder.
Background technology
REID RFID is as the core link realizing Internet of Things article identification basis, it is necessary to use flexible magnetic sheet.It is made by the flaky metal powder of very thin less than 1 μm, its energy absorbing high-frequency electromagnetic interference wave, and can effectively prevent the metal object reflection interference to reader identification RFID tag.At Internet of Things communications band energy, it can improve the effective depth of antenna, increases communication distance.
Traditional anti-EMI material spherical, elliposoidal, block and irregularly shaped metallic magnetic powder are made.There is substantial amounts of gap in the flexible anti-EMI filter magnetic sheet that the magnetic-particle of these patterns makes, it is easy to cause part Electromgnetically-transparent, thus it is relatively low to the absorbance of high-frequency electrical electromagnetic wave interference.The anti-EMI filter magnetic sheet made of flakey soft magnetic metal micropowder is flakey soft magnetic metal micropowder tablet battle array, electromagnetic interference wave is once after entering this sheet battle array, although through reflection continuously and refraction, it also is difficult to through sheet battle array, but, in reflection continuously and refracting process, the energy of electromagnetic interference wave is by progressively decay, approach exhaustion, and dissipates with the form of heat energy.
It is currently used for the equipment by spherical, elliposoidal, block and erose soft magnetic metal powder are processed into lepidiod metal dust and is mainly high energy ball mill or planetary ball mill.High energy ball mill or planetary ball mill are that the method utilizing the ball of high-speed motion to clash into mutually is to realize flattening.But shortcoming is: the shock between ball and ball is the shock of point and point, and its rum point is few, impulsive force is big.At the ball milling initial stage, it is possible to major part particles hit is become the flat particle that thickness is thicker.Along with the growth of Ball-milling Time, the reduction of powder thickness, the ability withstood shocks declines, and shock can make leafy powder become fragment fiercely, thus causing that the ratio of flat powder reduces.
Summary of the invention
The present invention is directed to high energy ball mill and planetary ball mill for shortcoming that lepidiod metal dust is processed, it is provided that a kind of multistage rotating disk type roll grinding device for rolling flaky metal powder, this device is suitable for small lot batch manufacture.In the flakey micropowder of present invention processing, flat powder ratio is high, processes more rapid, more efficient.
The present invention is achieved by the following technical programs:
A kind of multistage rotating disk type roll grinding device for rolling flaky metal powder, it is in series by several rotating disk type roll grinding device, and each rotating disk type roll grinding device includes tank body, line shaft, capstan support and capstan etc..Described line shaft is positioned at described tank body central lower, it is vertical setting, multiple capstan it is provided with in described tank body, described line shaft is connected in " Gui " word by capstan support with described capstan, preferred capstan quantity is 3～5, described tank body top is provided with charging aperture, described tank body central authorities are provided with head tank, head tank is located at above capstan, charging aperture upper end is arranged on described tank body, lower end is inserted in described head tank, described each capstan upper end is radially provided with at least two roller, described roller is symmetrical, corresponding described roller is provided with corresponding roller set, roller is constrained in the inner space of roller set and rotate；The side of described roller set is fixing with described inner tank wall to be connected, and described tank base is provided with discharging opening；Described head tank is cylindrical shape, and described head tank circumferential wall is uniformly provided with some apertures, and described head tank is arranged on described capstan position of center line.
Above-mentioned a kind of multistage rotating disk type roll grinding device for rolling flaky metal powder, wherein, the diameter of described roller and length ratio are 1:3～1:5.
Above-mentioned a kind of multistage rotating disk type roll grinding device for rolling flaky metal powder, wherein, the case hardness of described roller, roller set and capstan is all higher than HRc60, and the depth of quenching is more than 1.0mm.
Above-mentioned a kind of multistage rotating disk type roll grinding device for rolling flaky metal powder, wherein, the diameter of described roller should at Ф 100mm～Ф 400mm.
Above-mentioned a kind of multistage rotating disk type roll grinding device for rolling flaky metal powder, wherein, the inner arc radius of described roller set should be bigger 2mm～6mm than roller radius.
Operation principle: under dynamical system drives, line shaft quickly rotates, thus driving capstan high speed rotating, roller is positioned at the upper surface of capstan, existing with frictional force, capstan high speed rotating necessarily drives roller high speed rotating, and roller is positioned at roller set, therefore, they can only rotate at roller set.Metal dust, disperse medium and additive enter head tank from charging aperture respectively, and then, the aperture on head tank circumference arrives the surface of capstan, when Magnaglo is brought to or moves to below roller, then can be subject to rolling of roller.Due to the motion of capstan, Magnaglo forms fluid after being disperseed.Along with the rotation of capstan and roller, fluid also moves therewith, and magnetic-particle presents different suspended states because of high-speed motion.For the powder that density is identical, the powder that granule is bigger, its critical dropping velocity is relatively big, and granule is more little, and its critical dropping velocity is more low.In other words, when the solid particle that density is identical is in same moving fluid, less granule has only to less movement velocity and just can suspend in a fluid, and bigger granule then needs bigger movement velocity to be only possible to suspend in a fluid.Therefore, by adjusting the movement velocity of fluid, so that it may portion and top so that less granule floats on a liquid, and bulky grain is made to be deposited in liquid bottom.Thus can obtaining, the granule rolled the then overwhelming majority is bulky grain.
Owing to roller is relatively large in diameter, enough gravity can be provided, then a downward pressure is provided in the vertical direction, this pressure is exactly the grinding pressure to Magnaglo, grinding pressure makes Magnaglo mutually extrude, and bigger grinding pressure makes to be enough to make Magnaglo produce plastic deformation so that it is thickness reduces, and extend to length, width, make granule flattening.While powder is rolled, there is also shearing force, shearing force accelerates again Magnaglo and extends to length, width, serves the effect of calendering.By regulated fluid movement velocity, it is possible to make little, suspend in lepidiod micropowder, and make the particles settling big, thickness is thick.They are deposited to the region of tank base, just continue processing.For the object drifted with the tide with stream in a fluid, always they are with the minimum form flowing of the resistance that is subject in flow process, for board, then it are usually its length direction and are in flow direction；Owing to sheet-like magnetic powder has certain intensity, being rolled once them or shear, the plane that its length direction forms with width will level off to the direction vertical with grinding pressure naturally.Thus, its length and width direction is most susceptible to roll and shear.Growth over time, the increased frequency rolling with shearing, its thickness is more and more thinner, and length and width size is increasing.
In sum, according to patent of the present invention, it is possible to spherical, elliposoidal, block and erose metal fine powder are rolled into flakey metal fine powder.The average thickness of scale like powder is 0.1 μm～1.0 μm, aspect ratio 150～1500, and mean diameter D50 is 30 μm～100 μm.
Beneficial effect: in the powder of present invention processing, flat powder ratio is high, the scale like powder steady quality processed is processed more rapid, more efficient；It is suitable for medium quantity batch processing and long service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As it can be seen, a kind of multistage rotating disk type roll grinding device for rolling flaky metal powder, it is in series by several rotating disk type roll grinding device, and each rotating disk type roll grinding device includes tank body 5, line shaft 8, capstan support 7 and capstan 6 etc..Described line shaft 8 is positioned at described tank body 5 central lower, it is vertical setting, it is provided with multiple capstan 6 in described tank 5 body, described line shaft 7 is connected in " Gui " word by capstan support 7 with described capstan 6, preferred capstan quantity is 3～5, described tank body 5 top is provided with charging aperture 1, described tank body 5 central authorities are provided with head tank 2, head tank 2 is located at above capstan, charging aperture 1 upper end is arranged on described tank body 5, lower end is inserted in described head tank 2, described each capstan 6 upper end is radially provided with at least two roller 4, described roller 4 is symmetrical, corresponding described roller 4 is provided with corresponding roller set 3, roller 4 is constrained in the inner space of roller set 3 and rotate；The side of described roller set 3 is fixing with described tank body 5 inwall to be connected, and is provided with discharging opening 9 bottom described tank body 5；Described head tank 2 is cylindrical shape, and described head tank 2 circumferential wall is uniformly provided with some apertures, and Magnaglo, disperse medium and additive etc. are entered between capstan 6 and roller 3 by aperture.Described head tank 2 is arranged on described capstan 6 central authorities.The diameter of described roller 4 and length ratio are 1:3～1:5.The case hardness of described roller 4, roller set 3 and capstan 6 is all higher than HRc60, and the depth of quenching is more than 1.0mm.The diameter of described roller 4 is 100mm～400mm.The inner arc radius ratio big 2mm～6mm of roller radius of described roller set 3.
Operation principle: under dynamical system drives, line shaft quickly rotates, thus driving capstan high speed rotating, roller is positioned at the surface of capstan, existing with frictional force, capstan high speed rotating necessarily drives roller high speed rotating, and roller is positioned at roller set, therefore, they can only rotate at roller set.Metal dust, disperse medium and additive enter head tank from charging aperture respectively, and then, the aperture on head tank circumference arrives the surface of capstan, when Magnaglo is brought to or moves to below roller, then can be subject to rolling of roller.Due to the motion of capstan, Magnaglo forms fluid after being disperseed.Along with the rotation of capstan and roller, fluid also moves therewith, and magnetic-particle presents different suspended states because of high-speed motion.For the powder that density is identical, the powder that granule is bigger, its critical dropping velocity is relatively big, and granule is more little, and its critical dropping velocity is more low.In other words, when the solid particle that density is identical is in same moving fluid, less granule has only to less movement velocity and just can suspend in a fluid, and bigger granule then needs bigger movement velocity to be only possible to suspend in a fluid.Therefore, by adjusting the movement velocity of fluid, so that it may portion and top so that less granule floats on a liquid, and bulky grain is made to be deposited in liquid bottom.Thus can obtaining, the granule rolled the then overwhelming majority is bulky grain.
Owing to roller is relatively large in diameter, enough gravity can be provided, then a downward pressure is provided in the vertical direction, this pressure is exactly the grinding pressure to Magnaglo, grinding pressure makes Magnaglo mutually extrude, and bigger grinding pressure makes to be enough to make Magnaglo produce plastic deformation so that it is thickness reduces, and extend to length, width, make granule flattening.While powder is rolled, there is also shearing force, shearing force accelerates again Magnaglo and extends to length, width, serves the effect of calendering.By regulated fluid movement velocity, it is possible to make little, suspend in lepidiod micropowder, and make the particles settling big, thickness is thick.They are deposited to the region of tank base, just continue processing.For the object drifted with the tide with stream in a fluid, always they are with the minimum form flowing of the resistance that is subject in flow process, for board, then it are usually its length direction and are in flow direction；Owing to sheet-like magnetic powder has certain intensity, being rolled once them or shear, the plane that its length direction forms with width will level off to the direction vertical with grinding pressure naturally.Thus, its length and width direction is most susceptible to roll and shear.Growth over time, the increased frequency rolling with shearing, its thickness is more and more thinner, and length and width size is increasing.
The volume ratio making disperse medium, disperse medium and alloyed powder with ethanol is 10:1, and antirust, lubricant quantity is the mass ratio of metal dust is 0.2%.The diameter of Patent equipment roller of the present invention is Ф 200mm；The linear velocity of rotation dish outer is 400 ms/min.After continuously running 72 hours, sampling.
Performance indications: the average thickness of sample is 0.50 μm, and aspect ratio is about 980.Measuring with laser particle analyzer, its mean diameter D50 is 64 μm.
Claims (3)
1. the multistage rotating disk type roll grinding device being used for rolling flaky metal powder, it is characterized in that, it is be in series by several rotating disk type roll grinding device, each rotating disk type roll grinding device includes tank body, line shaft, capstan support and capstan, and described line shaft is positioned at described tank body central lower, it is vertical setting, being provided with multiple capstan in described tank body, described line shaft is connected in " Gui " word by capstan support with described capstan, and capstan quantity is 3～5；Described tank body top is provided with charging aperture, described tank interior is provided with head tank, head tank is located at capstan overcentre, charging aperture upper end is arranged on described tank body, lower end is inserted in described head tank, and described each capstan upper end is radially provided with at least two roller, and described roller is symmetrical, corresponding described roller is provided with corresponding roller set, is constrained in by roller in the inner space of roller set and rotates；The side of described roller set is fixing with described inner tank wall to be connected, and described tank base is provided with discharging opening；Described head tank is cylindrical shape, and described head tank circumferential wall is uniformly provided with some apertures, and described head tank is arranged on described capstan position of center line；The quantity of described roller is 2～8, and its diameter and length ratio are 1:3～1:5；The case hardness of described roller, roller set and capstan is all higher than HRc60, and the depth of quenching is more than 1.0mm.
2. a kind of multistage rotating disk type roll grinding device for rolling flaky metal powder as claimed in claim 1, it is characterised in that the diameter of described roller should at Ф 100mm～Ф 400mm.
3. a kind of multistage rotating disk type roll grinding device for rolling flaky metal powder as claimed in claim 1, it is characterised in that the inner arc radius of described roller set should be bigger 2mm～6mm than roller radius.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310466024.1A CN103480853B (en) | 2013-10-08 | 2013-10-08 | A kind of multistage rotating disk type roll grinding device for rolling flaky metal powder |
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| CN201310466024.1A CN103480853B (en) | 2013-10-08 | 2013-10-08 | A kind of multistage rotating disk type roll grinding device for rolling flaky metal powder |
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| CN103480853B true CN103480853B (en) | 2016-06-29 |
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| CN104259467A (en) * | 2014-08-27 | 2015-01-07 | 镇江宝纳电磁新材料有限公司 | Milling device for flaky metallic soft magnetic micro powder granule |
| CN116652195B (en) * | 2023-07-21 | 2023-12-05 | 云南睿智新材料发展有限公司 | Metal powder grinding device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2748172Y (en) * | 2004-12-10 | 2005-12-28 | 蒋贡生 | Stack up type planet ring grinding machine |
| CN201140087Y (en) * | 2007-12-21 | 2008-10-29 | 于本良 | Series connected roller mill |
| KR20110010987A (en) * | 2009-07-27 | 2011-02-08 | 한국원자력연구원 | The preparing method of alloy/metal powder dispersed with nano ceramic using the high-speed milling machine and the resultant alloy/metal powder dispersed with nano ceramic |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2748172Y (en) * | 2004-12-10 | 2005-12-28 | 蒋贡生 | Stack up type planet ring grinding machine |
| CN201140087Y (en) * | 2007-12-21 | 2008-10-29 | 于本良 | Series connected roller mill |
| KR20110010987A (en) * | 2009-07-27 | 2011-02-08 | 한국원자력연구원 | The preparing method of alloy/metal powder dispersed with nano ceramic using the high-speed milling machine and the resultant alloy/metal powder dispersed with nano ceramic |
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Address after: 212200 Henan Bridge, Yangtze East Road, Sanmao Street, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee after: Jiangsu Bona Electromagnetic New Materials Co.,Ltd. Address before: 212200 Henan Bridge, Yangtze East Road, Sanmao Street, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee before: ZHENJIANG BAONA ELECTROMAGNETIC NEW MATERIAL Co.,Ltd. |
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Granted publication date: 20160629 |