CN104658734B - A kind of Magnetic Spherical composite and preparation method thereof - Google Patents
A kind of Magnetic Spherical composite and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of Magnetic Spherical composite and its manufacture method, it is 3.5 5.1g/cm that the material, which includes a diameter of 0.5~10mm, density,3Spherical or subsphaeroidal magnetic material, magnetic material surface set thickness be 0.01~1.0mm layer of non-magnetic material.Methods described includes use the proportioning progress dispensing of the oxide and composition including any one or a few element in Ba, Sr or Pb element of Fe elements in molar ratio for 4.0~6.5, and adds in dispensing SiO2、CaCO3、Al2O3 and Cr2O3；Spherical or subsphaeroidal magnetic material is made after batch mixing, pre-burning, coarse crushing, fine grinding, drying, scattered, pelletizing and sintering in dispensing；The nonmagnetic substance of a layer specific color is coated by glue or rubber resin bonding on the surface of the magnetic material.The present invention can preferably simulate the performance of natural snow, the feature such as agglomerability, damping dispersiveness and self lubricity to realize natural snow, and substitute slide track materialses of the natural snow as skateboarding.
Description
Technical field
The present invention relates to a kind of Magnetic Spherical composite and preparation method thereof, belong to permanent magnet material technical field.
Background technology
Skiing is a kind of motion that innervation can be brought to sporter and is stimulated, and is also tourism and leisure and sports
The project being combined.But skiing is one and season and the project of temperature height correlation, typically only in high latitude or height
Altitude Regions could realize skiing, and the time in skiing season of different regions is different in size.In order to extend skiing season, at present
Generally use snowmaking technology.But with the rise of temperature, skiing will terminate in season, most long skiing season will not in the world
More than half a year.Therefore in non-skiing season, the pursuit that prior art does not have corresponding technical scheme to meet sporters is pierced
Swash and dynamic demand.
The content of the invention
The present invention proposes a kind of Magnetic Spherical composite and preparation method thereof, with solve present in prior art
Non- skiing season does not have corresponding technical scheme to meet the problem of kickster of sporters is with dynamic demand.Therefore,
The present invention proposes following technical scheme：
A kind of Magnetic Spherical composite for slide track materialses, including a diameter of 0.5~10mm, density are 3.5-
5.1g/cm3Spherical or subsphaeroidal magnetic material, and the thickness set on the surface of the magnetic material for 0.01~
1.0mm inorganic layer of non-magnetic material.
A kind of preparation method of Magnetic Spherical composite, including：
Pressed using the oxide of Fe elements and the composition including any one or a few element in Ba, Sr or Pb element
Mol ratio for 4.0~6.5 proportioning carry out dispensing, and in the dispensing addition 0.0~1.0% SiO2, 0.0~1.0%
CaCO3, 0.0~0.5% Al2O3 and 0.0~0.5% Cr2O3；
By the dispensing be made after batch mixing, pre-burning, coarse crushing, fine grinding, drying, scattered, pelletizing and sintering it is spherical or
Subsphaeroidal magnetic material；
The nonmagnetic substance of a layer specific color is coated by glue or rubber resin bonding on the surface of the magnetic material,
And the ratio for making the glue or rubber resin account for the magnetic material weight is 0.5~7.0%, the nonmagnetic substance accounts for described
The ratio of magnetic material weight is 5~25%.
As seen from the above technical solution provided by the invention, Magnetic Spherical composite produced by the present invention can be compared with
The performance of good simulation natural snow, so that the features such as the agglomerability of natural snow, damping dispersiveness and self lubricity are realized, and
Substitute slide track materialses of the natural snow as skateboarding.
Embodiment
The preferred embodiments of the present invention are illustrated below, it will be appreciated that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
The embodiments of the invention provide a kind of Magnetic Spherical composite for slide track materialses, including a diameter of 0.5~
10mm, density are 3.5-5.1g/cm3Spherical or subsphaeroidal magnetic material, and the magnetic material surface set
Thickness be 0.01~1.0mm inorganic layer of non-magnetic material.
Specifically, the density of magnetic material is preferably 4.1-5.0g/cm3, more preferably 4.35-4.85g/cm3.At 21 DEG C
When, the saturation magnetization of magnetic material is not less than 50emu/g, preferably not less than 55emu/g, is more preferably not less than
57emu/g；The coercivity of magnetic material is not less than 2400Oe, preferably not less than 2400Oe, more preferably not less than 2500Oe.
The hardness of inorganic layer of non-magnetic material is not less than 30HRC, preferably not less than 40HRC, more preferably not less than 50HRC.
The periphery parcel of inorganic layer of non-magnetic material has the colors such as white, blueness, red, green, purple, orange, yellow, black
One or more colors combination.
Magnetic material has following chemical formula：
MO·nFe2O3
Wherein, M be Ba, Sr or Pb element in any one or a few element combination；N represents Fe2O3With MO mole
Than scope is between 4.0~6.5；And Si, Ca, Al, Cr, B, Bi, Co are also included in the Magnetic Spherical composite
Or the combination of any one or a few element in La；Si elements are converted into SiO2Account for the percentage of gross weight for 0.01~
3.0%；Ca elements are converted into CaCO3The percentage for accounting for gross weight is 0.1~3.0%；Al elements are converted into Al2O3Account for gross weight
Percentage be 0.01~2.0%；Cr elements are converted into Cr2O3The percentage for accounting for gross weight is 0.01~2.0%；B element converts
Into HBO3The percentage for accounting for gross weight is 0~1.0%；La elements are converted into La2O3The percentage for accounting for gross weight is 0~5.0%；
Co elements are converted into Co3O4The percentage for accounting for gross weight is 0~3.0%；Bi elements are converted into Bi2O3Account for the percentage of gross weight
For 0~1.5%.
The embodiment of the present invention additionally provides a kind of preparation method of Magnetic Spherical composite, including：
Pressed using the oxide of Fe elements and the composition including any one or a few element in Ba, Sr or Pb element
Mol ratio for 4.0~6.5 proportioning carry out dispensing, and in the dispensing addition 0.0~1.0% SiO2, 0.0~1.0%
CaCO3, 0.0~0.5% Al2O3 and 0.0~0.5% Cr2O3；
By the dispensing be made after batch mixing, pre-burning, coarse crushing, fine grinding, drying, scattered, pelletizing and sintering it is spherical or
Subsphaeroidal magnetic material；
The nonmagnetic substance of a layer specific color is coated by glue or rubber resin bonding on the surface of the magnetic material,
And the ratio for making the glue or rubber resin account for the magnetic material weight is 0.5~7.0%, the nonmagnetic substance accounts for described
The ratio of magnetic material weight is 5~25%.
Specifically, can be using adhesive or rubber resin as binding agent, by inorganic layer of non-magnetic material and magnetic material
Material is combined closely.Wherein adhesive may include phenolic aldehyde-NBR, phenolic aldehyde-neoprene, phenolic aldehyde-polyurethane adhesive, epoxy-NBR,
The classes such as epoxy-TR sealant；Rubber resin may include epoxy resin, curable paste, casting glue, silicon rubber, polyvinyl chloride glue, general ring
The classes such as oxygen glue, modified epoxy, insulating cement, polyimides glue, modified phenolic glue, SGA.Inorganic nonmagnetic substance
The composition of layer may include all white inorganic thing powder, such as titanium dioxide, silica, calcium carbonate, zinc oxide, magnesia, oxygen
Change the one or more of the materials such as aluminium；The color such as red, green, blueness, purple, yellow, orange is mixed into nonmagnetic powder
Pigment, wherein pigment is comprising natural pigment and artificial color etc..Iron oxide red, iron oxide yellow, iron can also be included in nonmagnetic powder
The various colored inorganic things such as green.Corresponding mol ratio is preferably 4.7-6.0, and more excellent is 5.5-5.9.
The preparation of spherical or subsphaeroidal magnetic material can use below scheme：
1) dispensing：Oxide and strontium carbonate, barium carbonate of the iron such as iron scale or iron oxide red etc. are used for raw material, according to n=4.0-
6.5 proportioning carries out dispensing, while the SiO of addition 0.0~1.0%2, 0.0~1.0% CaCO3, 0.0~0.5% Al2O3
With 0.0~0.5% Cr2O3Deng additive；
2) batch mixing：Equipment is mixed using mixing apparatus；Hybrid mode includes two kinds of dry method batch mixing and material by wet type mixing
Mode.The purpose of mixing is that raw material and additive are well mixed；
3) pre-burning：Above-mentioned batch mixing, carries out pre-burning in agglomerating plant, obtains Preburning material；Calcined temperature is 1100~1350
℃；Calcined temperature is preferred：1200~1300 DEG C；
4) coarse crushing：Coarse crushing is carried out to above-mentioned Preburning material, the meal that granularity is 2.0~10.0 microns is obtained；
5) fine grinding：Above-mentioned meal is carried out using wet method mode finely divided；Fine grinding process adds 0.01~3.0%
SiO2,0.01~3.0% CaCO3,0.01~2.0% Al2O3,0.01~2.0% Cr2O3 and 0~1.0% HBO3
Deng additive；It is finely ground to 0.6~1.1 micron；
6) dry：Above-mentioned fine grinding slurry is dried, fine powder is obtained；
7) disperse：Above-mentioned xeraphium is disperseed；
8) pelletizing：Pelletizing is carried out to above-mentioned xeraphium, 0.5~12mm magnetic green-ball is obtained；
9) sinter：Above-mentioned magnetic green-ball is sintered, 0.5~10mm magnetic ball is obtained；Sintering temperature：1100~
1300℃；Sintering temperature is preferred：1150~1250 DEG C.
Include below scheme in the Surface coating glue or rubber resin of magnetic material：
1) in one layer of glue of Surface coating or rubber resin of magnetic material, magnetic ball is accounted for using the ratio of glue or rubber resin
The 0.5~7.0% of weight, preferably 1.0~4.0%；
2) after magnetic material uniformly wraps up glue or rubber resin, 5.0~25wt.% nonmagnetic powder is added to magnetic
Ball is wrapped up；Nonmagnetic powder can select the powder such as titanium dioxide, silica, calcium carbonate, zinc oxide, magnesia, aluminum oxide
End.After parcel, the magnetic ball of white is obtained；The thickness of nonmagnetic layer is between 0.01~1.0mm, preferably 0.05~0.2mm.
The pigment of the color such as red, green, blueness, purple, yellow, orange is mixed into nonmagnetic powder, passes through adjustment
Colourity, it is possible to corresponding to obtain red, green, blueness, purple, yellow, orange magnetic ball.Wherein pigment includes natural colour
Element and artificial color etc..Can also be comprising the various colored inorganic things such as iron oxide red, iron oxide yellow, iron is green in nonmagnetic powder.
The technical scheme provided using present embodiment, permanent-magnet material is done the magnetic ball of globulate, it is possible to achieve
The self lubricity of natural snow；After being magnetized to magnetic ball, absorption can realize agglomerability and the damping of natural snow mutually between particle
Dispersiveness.By strictly controlling the size of spheroid, extraordinary agglomerability and damping dispersiveness are obtained, skiing process can be achieved
In big revolution and small revolute function；By in magnetic ball Surface coating whiteness, can closely natural snow sense organ color
Coloured silk, and if in the material of other colors such as magnetic ball Surface coating blueness, the requirement of sense of different crowd can also be met.
The preparation method of Magnetic Spherical composite proposed by the present invention is made specifically below by specific embodiment
It is bright.
Embodiment 1：
(1) according to every 264 kilograms of iron oxide reds of batch, 42 kilograms of strontium carbonates and 0.61 kilogram of SiO2Dispensing is carried out, and using strong
Mixed machine is mixed；
(2) pelletizing is carried out using balling disk (-sc), then enters rotary kiln, the pre-burning under the process conditions of 1250 DEG C of maximum temperature,
Obtain Preburning material；
(3) coarse crushing is carried out to Preburning material using dry ball, obtains 4.3 microns of meal；
(4) 1500 kilograms of meal, 22.5 kilograms of CaCO are weighed3With 4.5 kilograms of SiO2, ball mill is added, wet method fine grinding 12 is small
When；
(5) it is dried using dry kiln, moisture is less than 0.5%；
(6) magnetic after drying is disperseed；It is 0.80 micron to measure granularity of magnet powder；
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic；
(8) green-ball is sintered using pushed bat kiln, 1220 DEG C of maximum sintering temperature after cooling, obtains 1-6mm magnetic
Ball；
(9) density of detection magnetic ball is 4.75g/cm3, Ms is 64.1emu/g, and Hc is 3050Oe.
Embodiment 2：
(1) according to every 255 kilograms of iron oxide reds of batch, 42 kilograms of strontium carbonates and 0.74 kilogram of SiO2Dispensing is carried out, and using strong
Mixed machine is mixed；
(2) pelletizing is carried out using balling disk (-sc), then enters rotary kiln, the pre-burning under the process conditions of 1240 DEG C of maximum temperature,
Obtain Preburning material；
(3) coarse crushing is carried out to Preburning material using dry ball, obtains 4.5 microns of meal；
(4) 1500 kilograms of meal, 19.5 kilograms of CaCO are weighed3With 4.5 kilograms of SiO2, ball mill is added, wet method fine grinding 12 is small
When；
(5) it is dried using dry kiln, moisture is less than 0.5%；
(6) magnetic after drying is disperseed；It is 0.85 micron to measure granularity of magnet powder；
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic；
(8) green-ball is sintered using pushed bat kiln, 1220 DEG C of maximum sintering temperature after cooling, obtains 1-6mm magnetic
Ball；
(9) density of detection magnetic ball is 4.73g/cm3, Ms is 65.4emu/g, and Hc is 3300Oe.
Embodiment 3：
(1) according to every 239 kilograms of iron oxide reds of batch, 42 kilograms of strontium carbonates and 0.84 kilogram of SiO2Dispensing is carried out, and using strong
Mixed machine is mixed；
(2) pelletizing is carried out using balling disk (-sc), then enters rotary kiln, the pre-burning under the process conditions of 1220 DEG C of maximum temperature,
Obtain Preburning material；
(3) coarse crushing is carried out to Preburning material using dry ball, obtains 4.3 microns of meal；
(4) 1500 kilograms of meal, 18 kilograms of CaCO are weighed3With 3.0 kilograms of SiO2, ball mill is added, wet method fine grinding 12 is small
When；
(5) it is dried using dry kiln, moisture is less than 0.5%；
(6) magnetic after drying is disperseed；It is 0.75 micron to measure granularity of magnet powder；
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic；
(8) green-ball is sintered using pushed bat kiln, 1210 DEG C of maximum sintering temperature after cooling, obtains 1-6mm magnetic
Ball；
(9) density of detection magnetic ball is 4.78g/cm3, Ms is 62.5emu/g, and Hc is 2870Oe.
Embodiment 4：
(1) according to every 264 kilograms of iron oxide reds of batch, 42 kilograms of strontium carbonates and 0.92 kilogram of SiO2Dispensing is carried out, and using strong
Mixed machine is mixed；
(2) pelletizing is carried out using balling disk (-sc), then enters rotary kiln, the pre-burning under the process conditions of 1250 DEG C of maximum temperature,
Obtain Preburning material；
(3) coarse crushing is carried out to Preburning material using dry ball, obtains 4.1 microns of meal；
(4) 1500 kilograms of meal, 18 kilograms of CaCO are weighed3, 3.0 kilograms of SiO2 and 3.0 kilogram of Bi2O3, ball mill is added,
Wet method fine grinding 12 hours；
(5) it is dried using dry kiln, moisture is less than 0.5%；
(6) magnetic after drying is disperseed；It is 0.83 micron to measure granularity of magnet powder；
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic；
(8) green-ball is sintered using pushed bat kiln, 1210 DEG C of maximum sintering temperature after cooling, obtains 1-6mm magnetic
Ball.
(9) density of detection magnetic ball is 4.84g/cm3, Ms is 65.6emu/g, and Hc is 3300Oe.
Embodiment 5：
(1) according to every 264 kilograms of iron oxide reds of batch, 42 kilograms of strontium carbonates and 0.92 kilogram of SiO2Dispensing is carried out, and using strong
Mixed machine is mixed；
(2) pelletizing is carried out using balling disk (-sc), then enters rotary kiln, the pre-burning under the process conditions of 1250 DEG C of maximum temperature,
Obtain Preburning material；
(3) coarse crushing is carried out to Preburning material using dry ball, obtains 4.1 microns of meal；
(4) 1500 kilograms of meal, 18 kilograms of CaCO are weighed3, 3.0 kilograms of SiO2, 15 kilograms of La2O3With 4.5 kilograms of Co3O4,
Add ball mill, wet method fine grinding 12 hours；
(5) it is dried using dry kiln, moisture is less than 0.5%；
(6) magnetic after drying is disperseed；It is 0.90 micron to measure granularity of magnet powder；
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic；
(8) green-ball is sintered using pushed bat kiln, 1230 DEG C of maximum sintering temperature after cooling, obtains 1-6mm magnetic
Ball；
(9) density of detection magnetic ball is 4.82g/cm3, Ms is 66.1emu/g, and Hc is 3440Oe.
Embodiment 6：
(1) according to every 250 kilograms of iron oxide reds of batch, 42 kilograms of strontium carbonates and 0.58 kilogram of SiO2Dispensing is carried out, and using strong
Mixed machine is mixed；
(2) pelletizing is carried out using balling disk (-sc), then enters rotary kiln, the pre-burning under the process conditions of 1300 DEG C of maximum temperature,
Obtain Preburning material；
(3) coarse crushing is carried out to Preburning material using dry ball, obtains 4.1 microns of meal；
(4) 1500 kilograms of meal, 18 kilograms of CaCO are weighed3, 4.5 kilograms of SiO2With 1.5 kilograms of H3BO3, ball mill is added,
Wet method fine grinding 14 hours；
(5) it is dried using dry kiln, moisture is less than 0.5%；
(6) magnetic after drying is disperseed；It is 0.89 micron to measure granularity of magnet powder；
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic；
(8) green-ball is sintered using pushed bat kiln, 1230 DEG C of maximum sintering temperature after cooling, obtains 1-6mm magnetic
Ball；
(9) density of detection magnetic ball is 4.65g/cm3, Ms is 62.3emu/g, and Hc is 2650Oe.
Embodiment 7：
(1) according to every 260 kilograms of iron oxide reds of batch, 56 kilograms of strontium carbonates and 0.63 kilogram of SiO2Dispensing is carried out, and using strong
Mixed machine is mixed；
(2) pelletizing is carried out using balling disk (-sc), then enters rotary kiln, the pre-burning under the process conditions of 1270 DEG C of maximum temperature,
Obtain Preburning material；
(3) coarse crushing is carried out to Preburning material using dry ball, obtains 4.0 microns of meal；
(4) 1500 kilograms of meal, 19.5 kilograms of CaCO are weighed3With 3.0 kilograms of SiO2, ball mill is added, wet method fine grinding 13 is small
When；
(5) it is dried using dry kiln, moisture is less than 0.5%；
(6) magnetic after drying is disperseed；It is 0.87 micron to measure granularity of magnet powder；
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic；
(8) green-ball is sintered using pushed bat kiln, 1200 DEG C of maximum sintering temperature after cooling, obtains 1-6mm magnetic
Ball；
(9) density of detection magnetic ball is 4.83g/cm3, Ms is 61.9emu/g, and Hc is 2450Oe.
Embodiment 8：
(1) 300 kilograms of 1 magnetic ball of embodiment is weighed, balling disk (-sc) is added, and in the rolling process of balling disk (-sc), be uniformly added into
3.0 kg ethylene resins and 15 kilograms of SiO2；In magnetic ball rolling process, SiO2It is evenly coated at magnetic ball surface；
(2) after epoxy resin cure, a kind of Magnetic Spherical composite is obtained, the color of Magnetic Spherical composite is ash
White, case hardness is 47HRC；Detection shows that magnet surface coats one layer of about 0.15mmSiO2。
(3) Magnetic Spherical composite is magnetized.
Embodiment 9：
(1) 300 kilograms of 2 magnetic ball of embodiment is weighed, balling disk (-sc) is added, and in the rolling process of balling disk (-sc), be uniformly added into
3.0 kg ethylene resins and 15 kilograms of SiO2；In magnetic ball rolling process, SiO2It is evenly coated at magnetic ball surface；
(2) after epoxy resin cure, a kind of Magnetic Spherical composite is obtained, the color of Magnetic Spherical composite is ash
White, case hardness is 47HRC；Detection shows that magnet surface coats one layer of about 0.15mm SiO2。
(3) Magnetic Spherical composite is magnetized.
Embodiment 10：
(1) 300 kilograms of 3 magnetic ball of embodiment is weighed, balling disk (-sc) is added, and in the rolling process of balling disk (-sc), be uniformly added into
3.0 kg ethylene resins and 13 kilograms of titanium dioxides；In magnetic ball rolling process, titanium dioxide is evenly coated at magnetic ball surface；
(2) after epoxy resin cure, a kind of Magnetic Spherical composite is obtained, the color of Magnetic Spherical composite is pure
White, case hardness is 42HRC；Detection shows that magnet surface coats one layer of about 0.13mm titanium dioxide.
(3) Magnetic Spherical composite is magnetized.
Embodiment 11：
(1) 300 kilograms of 4 magnetic ball of embodiment is weighed, balling disk (-sc) is added, and in the rolling process of balling disk (-sc), be uniformly added into
3.0 kg ethylene resins and 10 kilograms of SiO2With 6 kilograms of titanium dioxides；In magnetic ball rolling process, titanium dioxide and SiO2Uniform cladding
In magnetic ball surface；
(2) after epoxy resin cure, a kind of Magnetic Spherical composite is obtained, the color of Magnetic Spherical composite is pure
White, case hardness is 45HRC；Detection shows that magnet surface coats one layer of about 0.18mm nonmagnetic layer.
(3) Magnetic Spherical composite is magnetized.
Embodiment 12：
(1) 300 kilograms of 5 magnetic ball of embodiment is weighed, balling disk (-sc) is added, and in the rolling process of balling disk (-sc), be uniformly added into
3.0 kg ethylene resins and 10 kilograms of SiO2, 6 kilograms of titanium dioxide and 45 grams of floor file cyanines；In magnetic ball rolling process, titanium white
Powder and SiO2It is evenly coated at magnetic ball surface；
(2) after epoxy resin cure, a kind of Magnetic Spherical composite is obtained, the color of Magnetic Spherical composite is light
Blueness, case hardness is 45HRC；Detection shows that magnet surface coats one layer of about 0.18mm nonmagnetic layer.
(3) Magnetic Spherical composite is magnetized.
Embodiment 13：
(1) 300 kilograms of 6 magnetic ball of embodiment is weighed, balling disk (-sc) is added, and in the rolling process of balling disk (-sc), be uniformly added into
3.0 kg ethylene resins and 10 kilograms of SiO2With 6 kilograms of titanium dioxides；In magnetic ball rolling process, titanium dioxide and SiO2Uniform cladding
In magnetic ball surface；
(2) after epoxy resin cure, a kind of Magnetic Spherical composite is obtained, the color of Magnetic Spherical composite is pure
White, case hardness is 45HRC；Detection shows that magnet surface coats one layer of about 0.18mm nonmagnetic layer.
(3) Magnetic Spherical composite is magnetized.
Embodiment 14：
(1) 300 kilograms of 7 magnetic ball of embodiment is weighed, balling disk (-sc) is added, and in the rolling process of balling disk (-sc), be uniformly added into
3.0 kg ethylene resins and 10 kilograms of SiO2With 6 kilograms of titanium dioxides；In magnetic ball rolling process, titanium dioxide and SiO2Uniform cladding
In magnetic ball surface；
(2) after epoxy resin cure, a kind of Magnetic Spherical composite is obtained, the color of Magnetic Spherical composite is pure
White, case hardness is 45HRC；Detection shows that magnet surface coats one layer of about 0.18mm nonmagnetic layer.
(3) Magnetic Spherical composite is magnetized.
The foregoing is intended to be a preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art in the technical scope that the embodiment of the present invention is disclosed, the change that can readily occur in or
Replace, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection of claim
Scope is defined.
Claims (9)
1. a kind of Magnetic Spherical composite for slide track materialses, it is characterised in that including a diameter of 0.5~10mm, density
For 3.5-5.1g/cm3Spherical or subsphaeroidal magnetic material, and the magnetic material surface set thickness be
0.01~1.0mm inorganic layer of non-magnetic material；
The magnetic material has following chemical formula：MO·nFe2O3
Wherein, M be Ba, Sr or Pb element in any one or a few element combination；N represents Fe2O3With MO mol ratio,
Scope is between 4.0~6.5；And in the Magnetic Spherical composite also comprising Si, Ca, Al, Cr, B, Bi, Co or
The combination of any one or a few element in La；Si elements are converted into SiO2The percentage for accounting for gross weight is 0.01~3.0%；
Ca elements are converted into CaCO3The percentage for accounting for gross weight is 0.1~3.0%；Al elements are converted into Al2O3Account for the percentage of gross weight
Than for 0.01~2.0%；Cr elements are converted into Cr2O3The percentage for accounting for gross weight is 0.01~2.0%；B element is converted into HBO3
The percentage for accounting for gross weight is 0~1.0%；La elements are converted into La2O3The percentage for accounting for gross weight is 0~5.0%；Co elements
It is converted into Co3O4The percentage for accounting for gross weight is 0~3.0%；Bi elements are converted into Bi2O3Account for the percentage of gross weight for 0~
1.5%.
2. Magnetic Spherical composite according to claim 1, it is characterised in that the density of the magnetic material is 3.5-
5.1g/cm3, saturation magnetization of the magnetic material at 21 DEG C not less than 50emu/g, coercivity be not less than 2000Oe,
The hardness of the inorganic layer of non-magnetic material is not less than 30HRC.
3. Magnetic Spherical composite according to claim 2, it is characterised in that the density of the magnetic material is 4.1-
5.0g/cm3, saturation magnetization of the magnetic material at 21 DEG C not less than 55emu/g, coercivity be not less than 2400Oe,
The hardness of the inorganic layer of non-magnetic material is not less than 40HRC.
4. a kind of preparation method of Magnetic Spherical composite according to claims 1 to 3 any one, its feature exists
In, including：
Using the oxide of Fe elements and the composition including any one or a few element in Ba, Sr or Pb element by mole
Than for 4.0~6.5 proportioning carry out dispensing, and in the dispensing addition 0.0~1.0% SiO2, 0.0~1.0%
CaCO3, 0.0~0.5% Al2O3 and 0.0~0.5% Cr2O3；
Spherical or near ball is made in the dispensing after batch mixing, pre-burning, coarse crushing, fine grinding, drying, scattered, pelletizing and sintering
The magnetic material of shape；
The nonmagnetic substance of one layer specific color is coated by glue or rubber resin bonding on the surface of the magnetic material, and made
The ratio that the glue or rubber resin account for the magnetic material weight is 0.5~7.0%, and the nonmagnetic substance accounts for the magnetic
The ratio of material weight is 5~25%.
5. method according to claim 4, it is characterised in that the glue or rubber resin account for the magnetic material weight
Ratio is 1.0~4.0%.
6. method according to claim 4, it is characterised in that the mol ratio is 4.7-6.0.
7. method according to claim 4, it is characterised in that the temperature of the pre-burning is 1100~1350 DEG C.
8. method according to claim 4, it is characterised in that add 0.01~3.0% in the process of the fine grinding
SiO2, 0.01~3.0% CaCO3, 0.01~2.0% Al2O3, 0.01~2.0% Cr2O3With 0~1.0% HBO3,
And it is finely ground to 0.6~1.1 micron.
9. method according to claim 4, it is characterised in that sintered under conditions of sintering temperature is 1100~1300 DEG C
Obtain a diameter of 0.5~10mm spherical or subsphaeroidal magnetic material.
Priority Applications (1)
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| CN110143813A (en) * | 2019-04-25 | 2019-08-20 | 北矿科技股份有限公司 | A kind of magnetism ear pressure bean and preparation method thereof |
| CN110818443A (en) * | 2019-12-06 | 2020-02-21 | 和也健康科技有限公司 | Light magnetic ball and preparation method thereof |
| CN113528089B (en) * | 2021-06-23 | 2022-09-02 | 清华大学 | Magnetic energy-absorbing material based on magnetic microparticles and preparation method thereof |
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| CN101219475A (en) * | 2007-01-11 | 2008-07-16 | 潘喜峰 | Process for producing nickel phosphor alloy coating strontium ferrite magnetic electromagnetic wave absorption powder |
| CN101364467A (en) * | 2008-06-12 | 2009-02-11 | 青岛科技大学 | Preparation of ferrite magnetic spliced magnet having great processability |
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Address after: 100160, No. 23, No. 18, No. 188, South Fourth Ring Road, Beijing, Fengtai District, China, 4 floors Patentee after: North Polytron Technologies Inc Address before: 100070 Beijing, Fengtai District, South Fourth Ring Road West, No. 6, building 188, floor 5 Patentee before: Beikuan Magnetic-material Science & Technology Co., Ltd. |