CN104658734A - Spherical magnetic composite material and preparation method thereof - Google Patents
Spherical magnetic composite material and preparation method thereof Download PDFInfo
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- CN104658734A CN104658734A CN201310594717.9A CN201310594717A CN104658734A CN 104658734 A CN104658734 A CN 104658734A CN 201310594717 A CN201310594717 A CN 201310594717A CN 104658734 A CN104658734 A CN 104658734A
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Abstract
The invention discloses a spherical magnetic composite material and a preparation method thereof; the material comprises a spherical or nearly spherical magnetic material whose diameter is 0.5 mm to 10 mm, and the density thereof is 3.5 g/cm3 to 5.1 g/cm3; the surface of the magnetic material is provided with a non-magnetic material layer whose thickness is 0.01 mm to 1.0 mm. The method comprises the following steps: selecting an oxide of Fe element and a composition containing any one or more of Ba, Sr or Pb for preparing ingredients based on a proportion of 4.0 mole ratio to 6.5 mole ratio, and adding SiO2, CaCO3, Al2O3 and Cr2O3 into the ingredients; blending, pre-sintering, roughly crushing, finely grinding, drying, dispersing, pelletizing and sintering the ingredients, so as to make the spherical or nearly spherical magnetic material; gluing and wrapping a layer of non-magnetic material with a certain color on the source of the magnetic material through a glue or a rubber resin. The spherical magnetic composite material is able to simulate the property of the natural slow better, so as to achieve the characteristics of the natural snow, such as clustering property, damp dispersity and self-lubrication; the spherical magnetic composite material takes the place of the natural snow for being used as the slideway material of skateboarding.
Description
Technical field
The present invention relates to a kind of Magnetic Spherical composite material and preparation method thereof, belong to permanent magnet material technical field.
Background technology
Skiing is a kind of motion that can bring innervation to sporter and stimulate, and is also the project that tourism and leisure and sports combine.But skiing be one with the project of season and temperature height correlation, generally only could realize skiing in high latitude or high altitude localities, and the time in skiing season of different regions is different in size.In order to extend skiing season, what generally adopt at present is snowmaking technology.But along with the rising of temperature, skiing will terminate in season, and skiing season the longest in the world can not exceed half a year.Therefore in non-skiing season, prior art not corresponding technical scheme meets the kickster of sporters and dynamic demand.
Summary of the invention
The present invention proposes a kind of Magnetic Spherical composite material and preparation method thereof, with solve exist in prior art there is no corresponding technical scheme to the problem of the kickster and dynamic demand that meet sporters season in non-skiing.For this reason, the present invention proposes following technical scheme:
For a Magnetic Spherical composite material for slide track materials, comprise that diameter is 0.5 ~ 10mm, density is 3.5-5.1g/cm
3spherical or subglobose magnetic material, and the surface of described magnetic material arrange thickness be the layer of non-magnetic material of 0.01 ~ 1.0mm.
A preparation method for Magnetic Spherical composite material, comprising:
The oxide adopting Fe element is prepared burden with the proportioning that the composition comprising any one or a few element in Ba, Sr or Pb element is 4.0 ~ 6.5 in molar ratio, and adds the SiO of 0.0 ~ 1.0% in described batching
2, 0.0 ~ 1.0% CaCO
3, 0.0 ~ 0.5% Al
2the Cr of O3 and 0.0 ~ 0.5%
2o
3;
By described batching obtained spherical or subglobose magnetic material after batch mixing, pre-burning, coarse crushing, fine grinding, drying, dispersion, pelletizing and sintering;
The nonmagnetic substance of glue or the bonding coated one deck particular color of rubber resin is passed through on the surface of described magnetic material, and the ratio making described glue or rubber resin account for described magnetic material weight is 0.5 ~ 7.0%, the ratio that described nonmagnetic substance accounts for described magnetic material weight is 5 ~ 25%.
As seen from the above technical solution provided by the invention, the Magnetic Spherical composite material that the present invention obtains can simulate the performance of natural snow preferably, thus realize the features such as the dispersed and self lubricity of the agglomerability of natural snow, damping, and substitute the slide track materials of natural snow as skateboarding.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiments provide a kind of Magnetic Spherical composite material for slide track materials, comprise that diameter is 0.5 ~ 10mm, density is 3.5-5.1g/cm
3spherical or subglobose magnetic material, and the surface of described magnetic material arrange thickness be the layer of non-magnetic material of 0.01 ~ 1.0mm.
Concrete, the density of magnetic material is preferably 4.1-5.0g/cm
3, be more preferably 4.35-4.85g/cm
3.21 DEG C time, the saturation magnetization of magnetic material is not less than 50emu/g, is preferably not less than 55emu/g, is more preferably and is not less than 57emu/g; The coercive force of magnetic material is not less than 2400Oe, is preferably not less than 2400Oe, is more preferably and is not less than 2500Oe.The hardness of layer of non-magnetic material is not less than 30HRC, is preferably not less than 40HRC, is more preferably and is not less than 50HRC.There is at the periphery of layer of non-magnetic material parcel the combination of one or more colors of the colors such as white, blueness, redness, green, purple, orange, yellow, black.
Magnetic material has following chemical formula:
MO·nFe
2O
3
Wherein, M is the combination of any one or a few element in Ba, Sr or Pb element; N represents the mol ratio of element of Fe and M, and scope is between 4.0 ~ 6.5; And in described Magnetic Spherical composite material, also comprise the combination of any one or a few element in Si, Ca, Al, Cr, B, Bi, Co or La; Si element is converted into SiO
2the percentage accounting for total weight is 0.01 ~ 3.0%; Ca element is converted into CaCO
3the percentage accounting for total weight is 0.1 ~ 3.0%; Al element is converted into Al
2o
3the percentage accounting for total weight is 0.01 ~ 2.0%; Cr element is converted into Cr
2o
3the percentage accounting for total weight is 0.01 ~ 2.0%; B element is converted into HBO
3the percentage accounting for total weight is 0 ~ 1.0%; La element is converted into La
2o
3the percentage accounting for total weight is 0 ~ 5.0%; Co element is converted into Co
3o
4the percentage accounting for total weight is 0 ~ 3.0%; Bi element is converted into Bi
2o
3the percentage accounting for total weight is 0 ~ 1.5%.
The embodiment of the present invention additionally provides a kind of preparation method of Magnetic Spherical composite material, comprising:
The oxide adopting Fe element is prepared burden with the proportioning that the composition comprising any one or a few element in Ba, Sr or Pb element is 4.0 ~ 6.5 in molar ratio, and adds the SiO of 0.0 ~ 1.0% in described batching
2, 0.0 ~ 1.0% CaCO
3, 0.0 ~ 0.5% Al
2the Cr of O3 and 0.0 ~ 0.5%
2o
3;
By described batching obtained spherical or subglobose magnetic material after batch mixing, pre-burning, coarse crushing, fine grinding, drying, dispersion, pelletizing and sintering;
The nonmagnetic substance of glue or the bonding coated one deck particular color of rubber resin is passed through on the surface of described magnetic material, and the ratio making described glue or rubber resin account for described magnetic material weight is 0.5 ~ 7.0%, the ratio that described nonmagnetic substance accounts for described magnetic material weight is 5 ~ 25%.
Concrete, adhesive or rubber resin can be adopted as binding agent, layer of non-magnetic material and magnetic material are combined closely.Wherein adhesive can comprise the classes such as phenolic aldehyde-Nitrile Rubber, phenolic aldehyde-neoprene, phenolic aldehyde-polyurethane adhesive, epoxy-Nitrile Rubber, epoxy-TR sealant; Rubber resin can comprise the class such as epoxy resin, sclerosis glue, casting glue, silicon rubber, polyvinyl chloride glue, universal epoxy glue, modified epoxy, insulating cement, polyimides glue, modified phenolic glue, acrylate adhesive.The composition of layer of non-magnetic material can comprise all white inorganic thing powder, as one or more of the materials such as titanium dioxide, silicon dioxide, calcium carbonate, zinc oxide, magnesium oxide, aluminium oxide; In nonmagnetic powder, be mixed into the pigment of redness, green, blueness, purple, yellow, the color such as orange, wherein pigment comprises natural colouring matter and artificial color etc.The various colored inorganic things such as iron oxide red, iron oxide yellow, iron is green can also be comprised in nonmagnetic powder.Corresponding mol ratio is preferably 4.7-6.0, and more excellent is 5.5-5.9.
The preparation of spherical or subglobose magnetic material can adopt following flow process:
1) prepare burden: adopt the oxide of the iron such as iron scale or iron oxide red and strontium carbonate, brium carbonate etc. to be raw material, prepare burden according to the proportioning of n=4.0-6.5, add the SiO of 0.0 ~ 1.0% simultaneously
2, 0.0 ~ 1.0% CaCO
3, 0.0 ~ 0.5% Al
2o
3with 0.0 ~ 0.5% Cr
2o
3deng additive;
2) batch mixing: adopt mixing apparatus to mix equipment; Hybrid mode comprises dry method batch mixing and material by wet type mixing two kinds of modes.The object of mixing is that raw material and additive mix;
3) pre-burning: above-mentioned batch mixing, carries out pre-burning in agglomerating plant, obtains Preburning material; Calcined temperature is 1100 ~ 1350 DEG C; Calcined temperature is preferred: 1200 ~ 1300 DEG C;
4) coarse crushing: carry out coarse crushing to above-mentioned Preburning material, obtains the meal that granularity is 2.0 ~ 10.0 microns;
5) fine grinding: adopt wet method mode to carry out fine powder to above-mentioned meal broken; Fine grinding process adds the additive such as SiO2, CaCO3, the Al2O3 of 0.01 ~ 2.0% of 0.01 ~ 3.0%, the HBO3 of the Cr2O3 of 0.01 ~ 2.0% and 0 ~ 1.0% of 0.01 ~ 3.0%; Be finely ground to 0.6 ~ 1.1 micron;
6) dry: drying to be carried out to above-mentioned fine grinding slip, obtains fine powder;
7) disperse: above-mentioned xeraphium is disperseed;
8) pelletizing: carry out pelletizing to above-mentioned xeraphium, obtains the magnetic green-ball of 0.5 ~ 12mm;
9) sinter: above-mentioned magnetic green-ball is sintered, obtain the magnetic ball of 0.5 ~ 10mm; Sintering temperature: 1100 ~ 1300 DEG C; Sintering temperature is preferred: 1150 ~ 1250 DEG C.
Following flow process is comprised at the Surface coating glue of magnetic material or rubber resin:
1) at Surface coating one deck glue or the rubber resin of magnetic material, the ratio of glue or rubber resin is used to account for 0.5 ~ 7.0% of magnetic ball weight, preferably 1.0 ~ 4.0%;
2) after magnetic material evenly wraps up glue or rubber resin, the nonmagnetic powder adding 5.0 ~ 25wt.% is wrapped up magnetic ball; Nonmagnetic powder can select the powder such as titanium dioxide, silicon dioxide, calcium carbonate, zinc oxide, magnesium oxide, aluminium oxide.After parcel, obtain the magnetic ball of white; The thickness of nonmagnetic layer between 0.01 ~ 1.0mm, preferably 0.05 ~ 0.2mm.
In nonmagnetic powder, be mixed into the pigment of redness, green, blueness, purple, yellow, the color such as orange, by adjustment colourity, just can obtain redness, green, blueness, purple, yellow, orange magnetic ball accordingly.Wherein pigment comprises natural colouring matter and artificial color etc.The various colored inorganic things such as iron oxide red, iron oxide yellow, iron is green can also be comprised in nonmagnetic powder.
Adopt the technical scheme that this embodiment provides, permanent magnetic material is done the magnetic ball of globulate, the self lubricity of natural snow can be realized; After magnetizing to magnetic ball, between particle, absorption can realize agglomerability and the damping dispersiveness of natural snow mutually.By strictly controlling the size of spheroid, obtaining extraordinary agglomerability and damping dispersiveness, large revolution and little revolute function in skiing process can be realized; By at magnetic ball Surface coating whiteness, can the sense organ color of closely natural snow, and if wait the material of other color in magnetic ball Surface coating blueness, the requirement of sense of different crowd can also be met.
Below by specific embodiment, the preparation method to the Magnetic Spherical composite material that the present invention proposes elaborates.
Embodiment 1:
(1) according to every batch of 264 kilograms of iron oxide reds, 42 kilograms of strontium carbonates and 0.61 kilogram of SiO
2prepare burden, and adopt strong mixed machine mixing;
(2) adopt balling disk (-sc) to carry out pelletizing, then enter rotary kiln, pre-burning under the process conditions of maximum temperature 1250 DEG C, obtain Preburning material;
(3) adopt dry ball to carry out coarse crushing to Preburning material, obtain the meal of 4.3 microns;
(4) 1500 kilograms of meal, 22.5 kilograms of CaCO are weighed
3with 4.5 kilograms of SiO
2, add ball mill, wet method fine grinding 12 hours;
(5) adopt dry kiln to carry out drying, moisture is less than 0.5%;
(6) magnetic after drying is disperseed; Measuring granularity of magnet powder is 0.80 micron;
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic;
(8) adopt pushed bat kiln to sinter green-ball, most high sintering temperature 1220 DEG C, after cooling, obtains the magnetic ball of 1-6mm;
(9) density detecting magnetic ball is 4.75g/cm
3, Ms is 64.1emu/g, Hc is 3050Oe.
Embodiment 2:
(1) according to every batch of 255 kilograms of iron oxide reds, 42 kilograms of strontium carbonates and 0.74 kilogram of SiO
2prepare burden, and adopt strong mixed machine mixing;
(2) adopt balling disk (-sc) to carry out pelletizing, then enter rotary kiln, pre-burning under the process conditions of maximum temperature 1240 DEG C, obtain Preburning material;
(3) adopt dry ball to carry out coarse crushing to Preburning material, obtain the meal of 4.5 microns;
(4) 1500 kilograms of meal, 19.5 kilograms of CaCO are weighed
3with 4.5 kilograms of SiO
2, add ball mill, wet method fine grinding 12 hours;
(5) adopt dry kiln to carry out drying, moisture is less than 0.5%;
(6) magnetic after drying is disperseed; Measuring granularity of magnet powder is 0.85 micron;
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic;
(8) adopt pushed bat kiln to sinter green-ball, most high sintering temperature 1220 DEG C, after cooling, obtains the magnetic ball of 1-6mm;
(9) density detecting magnetic ball is 4.73g/cm
3, Ms is 65.4emu/g, Hc is 3300Oe.
Embodiment 3:
(1) according to every batch of 239 kilograms of iron oxide reds, 42 kilograms of strontium carbonates and 0.84 kilogram of SiO
2prepare burden, and adopt strong mixed machine mixing;
(2) adopt balling disk (-sc) to carry out pelletizing, then enter rotary kiln, pre-burning under the process conditions of maximum temperature 1220 DEG C, obtain Preburning material;
(3) adopt dry ball to carry out coarse crushing to Preburning material, obtain the meal of 4.3 microns;
(4) 1500 kilograms of meal, 18 kilograms of CaCO are weighed
3with 3.0 kilograms of SiO
2, add ball mill, wet method fine grinding 12 hours;
(5) adopt dry kiln to carry out drying, moisture is less than 0.5%;
(6) magnetic after drying is disperseed; Measuring granularity of magnet powder is 0.75 micron;
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic;
(8) adopt pushed bat kiln to sinter green-ball, most high sintering temperature 1210 DEG C, after cooling, obtains the magnetic ball of 1-6mm;
(9) density detecting magnetic ball is 4.78g/cm
3, Ms is 62.5emu/g, Hc is 2870Oe.
Embodiment 4:
(1) according to every batch of 264 kilograms of iron oxide reds, 42 kilograms of strontium carbonates and 0.92 kilogram of SiO
2prepare burden, and adopt strong mixed machine mixing;
(2) adopt balling disk (-sc) to carry out pelletizing, then enter rotary kiln, pre-burning under the process conditions of maximum temperature 1250 DEG C, obtain Preburning material;
(3) adopt dry ball to carry out coarse crushing to Preburning material, obtain the meal of 4.1 microns;
(4) 1500 kilograms of meal, 18 kilograms of CaCO are weighed
3, 3.0 kilograms of SiO2 and 3.0 kilogram Bi2O
3, add ball mill, wet method fine grinding 12 hours;
(5) adopt dry kiln to carry out drying, moisture is less than 0.5%;
(6) magnetic after drying is disperseed; Measuring granularity of magnet powder is 0.83 micron;
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic;
(8) adopt pushed bat kiln to sinter green-ball, most high sintering temperature 1210 DEG C, after cooling, obtains the magnetic ball of 1-6mm.
(9) density detecting magnetic ball is 4.84g/cm
3, Ms is 65.6emu/g, Hc is 3300Oe.
Embodiment 5:
(1) according to every batch of 264 kilograms of iron oxide reds, 42 kilograms of strontium carbonates and 0.92 kilogram of SiO
2prepare burden, and adopt strong mixed machine mixing;
(2) adopt balling disk (-sc) to carry out pelletizing, then enter rotary kiln, pre-burning under the process conditions of maximum temperature 1250 DEG C, obtain Preburning material;
(3) adopt dry ball to carry out coarse crushing to Preburning material, obtain the meal of 4.1 microns;
(4) 1500 kilograms of meal, 18 kilograms of CaCO are weighed
3, 3.0 kilograms of SiO
2, 15 kilograms of La
2o
3with 4.5 kilograms of Co
3o
4, add ball mill, wet method fine grinding 12 hours;
(5) adopt dry kiln to carry out drying, moisture is less than 0.5%;
(6) magnetic after drying is disperseed; Measuring granularity of magnet powder is 0.90 micron;
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic;
(8) adopt pushed bat kiln to sinter green-ball, most high sintering temperature 1230 DEG C, after cooling, obtains the magnetic ball of 1-6mm;
(9) density detecting magnetic ball is 4.82g/cm
3, Ms is 66.1emu/g, Hc is 3440Oe.
Embodiment 6:
(1) according to every batch of 250 kilograms of iron oxide reds, 42 kilograms of strontium carbonates and 0.58 kilogram of SiO
2prepare burden, and adopt strong mixed machine mixing;
(2) adopt balling disk (-sc) to carry out pelletizing, then enter rotary kiln, pre-burning under the process conditions of maximum temperature 1300 DEG C, obtain Preburning material;
(3) adopt dry ball to carry out coarse crushing to Preburning material, obtain the meal of 4.1 microns;
(4) 1500 kilograms of meal, 18 kilograms of CaCO are weighed
3, 4.5 kilograms of SiO
2with 1.5 kilograms of H
3bO
3, add ball mill, wet method fine grinding 14 hours;
(5) adopt dry kiln to carry out drying, moisture is less than 0.5%;
(6) magnetic after drying is disperseed; Measuring granularity of magnet powder is 0.89 micron;
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic;
(8) adopt pushed bat kiln to sinter green-ball, most high sintering temperature 1230 DEG C, after cooling, obtains the magnetic ball of 1-6mm;
(9) density detecting magnetic ball is 4.65g/cm
3, Ms is 62.3emu/g, Hc is 2650Oe.
Embodiment 7:
(1) according to every batch of 260 kilograms of iron oxide reds, 56 kilograms of strontium carbonates and 0.63 kilogram of SiO
2prepare burden, and adopt strong mixed machine mixing;
(2) adopt balling disk (-sc) to carry out pelletizing, then enter rotary kiln, pre-burning under the process conditions of maximum temperature 1270 DEG C, obtain Preburning material;
(3) adopt dry ball to carry out coarse crushing to Preburning material, obtain the meal of 4.0 microns;
(4) 1500 kilograms of meal, 19.5 kilograms of CaCO are weighed
3with 3.0 kilograms of SiO
2, add ball mill, wet method fine grinding 13 hours;
(5) adopt dry kiln to carry out drying, moisture is less than 0.5%;
(6) magnetic after drying is disperseed; Measuring granularity of magnet powder is 0.87 micron;
(7) green-ball that pelletizing obtains 1-7mm is carried out to magnetic;
(8) adopt pushed bat kiln to sinter green-ball, most high sintering temperature 1200 DEG C, after cooling, obtains the magnetic ball of 1-6mm;
(9) density detecting magnetic ball is 4.83g/cm
3, Ms is 61.9emu/g, Hc is 2450Oe.
Embodiment 8:
(1) weigh embodiment 1 magnetic ball 300 kilograms, add balling disk (-sc), and at the rolling process of balling disk (-sc), evenly add 3.0 kg ethylene resins and 15 kilograms of SiO
2; At magnetic ball rolling process, SiO
2evenly be coated on magnetic ball surface;
(2) after epoxy resin cure, obtain a kind of Magnetic Spherical composite material, the color of Magnetic Spherical composite material is canescence, and case hardness is 47HRC; Detection shows that the coated one deck of magnet surface is about 0.15mmSiO
2.
(3) Magnetic Spherical composite material is magnetized.
Embodiment 9:
(1) weigh embodiment 2 magnetic ball 300 kilograms, add balling disk (-sc), and at the rolling process of balling disk (-sc), evenly add 3.0 kg ethylene resins and 15 kilograms of SiO
2; At magnetic ball rolling process, SiO
2evenly be coated on magnetic ball surface;
(2) after epoxy resin cure, obtain a kind of Magnetic Spherical composite material, the color of Magnetic Spherical composite material is canescence, and case hardness is 47HRC; Detection shows that the coated one deck of magnet surface is about 0.15mm SiO
2.
(3) Magnetic Spherical composite material is magnetized.
Embodiment 10:
(1) weigh embodiment 3 magnetic ball 300 kilograms, add balling disk (-sc), and at the rolling process of balling disk (-sc), evenly add 3.0 kg ethylene resins and 13 kilograms of titanium dioxides; At magnetic ball rolling process, titanium dioxide is evenly coated on magnetic ball surface;
(2) after epoxy resin cure, obtain a kind of Magnetic Spherical composite material, the color of Magnetic Spherical composite material is pure white, and case hardness is 42HRC; Detection shows that the coated one deck of magnet surface is about 0.13mm titanium dioxide.
(3) Magnetic Spherical composite material is magnetized.
Embodiment 11:
(1) weigh embodiment 4 magnetic ball 300 kilograms, add balling disk (-sc), and at the rolling process of balling disk (-sc), evenly add 3.0 kg ethylene resins and 10 kilograms of SiO
2with 6 kilograms of titanium dioxides; At magnetic ball rolling process, titanium dioxide and SiO
2evenly be coated on magnetic ball surface;
(2) after epoxy resin cure, obtain a kind of Magnetic Spherical composite material, the color of Magnetic Spherical composite material is pure white, and case hardness is 45HRC; Detection shows that the coated one deck of magnet surface is about 0.18mm nonmagnetic layer.
(3) Magnetic Spherical composite material is magnetized.
Embodiment 12:
(1) weigh embodiment 5 magnetic ball 300 kilograms, add balling disk (-sc), and at the rolling process of balling disk (-sc), evenly add 3.0 kg ethylene resins and 10 kilograms of SiO
2, 6 kilograms of titanium dioxide and 45 grams of floor file cyanines; At magnetic ball rolling process, titanium dioxide and SiO
2evenly be coated on magnetic ball surface;
(2) after epoxy resin cure, obtain a kind of Magnetic Spherical composite material, the color of Magnetic Spherical composite material is light blue, and case hardness is 45HRC; Detection shows that the coated one deck of magnet surface is about 0.18mm nonmagnetic layer.
(3) Magnetic Spherical composite material is magnetized.
Embodiment 13:
(1) weigh embodiment 6 magnetic ball 300 kilograms, add balling disk (-sc), and at the rolling process of balling disk (-sc), evenly add 3.0 kg ethylene resins and 10 kilograms of SiO
2with 6 kilograms of titanium dioxides; At magnetic ball rolling process, titanium dioxide and SiO
2evenly be coated on magnetic ball surface;
(2) after epoxy resin cure, obtain a kind of Magnetic Spherical composite material, the color of Magnetic Spherical composite material is pure white, and case hardness is 45HRC; Detection shows that the coated one deck of magnet surface is about 0.18mm nonmagnetic layer.
(3) Magnetic Spherical composite material is magnetized.
Embodiment 14:
(1) weigh embodiment 7 magnetic ball 300 kilograms, add balling disk (-sc), and at the rolling process of balling disk (-sc), evenly add 3.0 kg ethylene resins and 10 kilograms of SiO
2with 6 kilograms of titanium dioxides; At magnetic ball rolling process, titanium dioxide and SiO
2evenly be coated on magnetic ball surface;
(2) after epoxy resin cure, obtain a kind of Magnetic Spherical composite material, the color of Magnetic Spherical composite material is pure white, and case hardness is 45HRC; Detection shows that the coated one deck of magnet surface is about 0.18mm nonmagnetic layer.
(3) Magnetic Spherical composite material is magnetized.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the embodiment of the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. for a Magnetic Spherical composite material for slide track materials, it is characterized in that, comprise that diameter is 0.5 ~ 10mm, density is 3.5-5.1g/cm
3spherical or subglobose magnetic material, and the surface of described magnetic material arrange thickness be the layer of non-magnetic material of 0.01 ~ 1.0mm.
2. Magnetic Spherical composite material according to claim 1, is characterized in that, the density of described magnetic material is 3.5-5.1g/cm
3, described magnetic material 21 DEG C time saturation magnetization is not less than 50emu/g, coercive force is not less than 2000Oe, the hardness of described layer of non-magnetic material is not less than 30HRC.
3. Magnetic Spherical composite material according to claim 2, is characterized in that, the density of described magnetic material is 4.1-5.0g/cm
3, described magnetic material 21 DEG C time saturation magnetization is not less than 55emu/g, coercive force is not less than 2400Oe, the hardness of described layer of non-magnetic material is not less than 40HRC.
4. Magnetic Spherical composite material according to claim 1, is characterized in that, described magnetic material has following chemical formula:
MO·nFe
2O
3
Wherein, M is the combination of any one or a few element in Ba, Sr or Pb element; N represents the mol ratio of element of Fe and M, and scope is between 4.0 ~ 6.5; And in described Magnetic Spherical composite material, also comprise the combination of any one or a few element in Si, Ca, Al, Cr, B, Bi, Co or La; Si element is converted into SiO
2the percentage accounting for total weight is 0.01 ~ 3.0%; Ca element is converted into CaCO
3the percentage accounting for total weight is 0.1 ~ 3.0%; Al element is converted into Al
2o
3the percentage accounting for total weight is 0.01 ~ 2.0%; Cr element is converted into Cr
2o
3the percentage accounting for total weight is 0.01 ~ 2.0%; B element is converted into HBO
3the percentage accounting for total weight is 0 ~ 1.0%; La element is converted into La
2o
3the percentage accounting for total weight is 0 ~ 5.0%; Co element is converted into Co
3o
4the percentage accounting for total weight is 0 ~ 3.0%; Bi element is converted into Bi
2o
3the percentage accounting for total weight is 0 ~ 1.5%.
5. a preparation method for the Magnetic Spherical composite material according to Claims 1-4 any one, is characterized in that, comprising:
The oxide adopting Fe element is prepared burden with the proportioning that the composition comprising any one or a few element in Ba, Sr or Pb element is 4.0 ~ 6.5 in molar ratio, and adds the SiO of 0.0 ~ 1.0% in described batching
2, 0.0 ~ 1.0% CaCO
3, 0.0 ~ 0.5% Al
2the Cr of O3 and 0.0 ~ 0.5%
2o
3;
By described batching obtained spherical or subglobose magnetic material after batch mixing, pre-burning, coarse crushing, fine grinding, drying, dispersion, pelletizing and sintering;
The nonmagnetic substance of glue or the bonding coated one deck particular color of rubber resin is passed through on the surface of described magnetic material, and the ratio making described glue or rubber resin account for described magnetic material weight is 0.5 ~ 7.0%, the ratio that described nonmagnetic substance accounts for described magnetic material weight is 5 ~ 25%.
6. method according to claim 5, is characterized in that, the ratio that described glue or rubber resin account for described magnetic material weight is 1.0 ~ 4.0%.
7. method according to claim 5, is characterized in that, described mol ratio is 4.7-6.0.
8. method according to claim 5, is characterized in that, the temperature of described pre-burning is 1100 ~ 1350 DEG C.
9. method according to claim 5, is characterized in that, adds the SiO of 0.01 ~ 3.0% in the process of described fine grinding
2, 0.01 ~ 3.0% CaCO
3, 0.01 ~ 2.0% Al
2o
3, 0.01 ~ 2.0% Cr
2o
3with 0 ~ 1.0% HBO
3, and be finely ground to 0.6 ~ 1.1 micron.
10. method according to claim 5, is characterized in that, is that under the condition of 1100 ~ 1300 DEG C, sintering obtains the spherical or subglobose magnetic material that diameter is 0.5 ~ 10mm in sintering temperature.
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| CN201310594717.9A CN104658734B (en) | 2013-11-21 | 2013-11-21 | A kind of Magnetic Spherical composite and preparation method thereof |
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| CN201310594717.9A CN104658734B (en) | 2013-11-21 | 2013-11-21 | A kind of Magnetic Spherical composite and preparation method thereof |
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| CN104658734A true CN104658734A (en) | 2015-05-27 |
| CN104658734B CN104658734B (en) | 2017-07-18 |
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