CN104962236A - Broken abrasive particle with designed thickness, abrasive product made of broken abrasive particle, and preparation method of broken abrasive particle - Google Patents
Broken abrasive particle with designed thickness, abrasive product made of broken abrasive particle, and preparation method of broken abrasive particle Download PDFInfo
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- CN104962236A CN104962236A CN201510278363.6A CN201510278363A CN104962236A CN 104962236 A CN104962236 A CN 104962236A CN 201510278363 A CN201510278363 A CN 201510278363A CN 104962236 A CN104962236 A CN 104962236A
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- abrasive particle
- abrasive
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Abstract
The invention discloses a broken abrasive particle with designed thickness, an abrasive product made of the broken abrasive particle, and a preparation method of the broken abrasive particle. The preparation method of the broken abrasive particle comprises the following steps: 1, preparing a horizontally arranged drying box and a drying disc with a single cavity provided therein and with a large surface area; 2, preparing a material; 3, calculating the amount of a required slurry according to the designed thickness and the volume of the drying disc, taking the required slurry, pouring the required slurry into the drying disc, uniformly distributing the required slurry, and drying at 105DEG C for 4-6h; 4, calcining a broken sheet abrasive particle precursor at 700DEG C, and soaking the calcined precursor in a mixed nitrate solution; and 5, removing the excess nitrate solution, drying the soaked sheet abrasive particle precursor, calcining the obtained abrasive particle at 700DEG C, and sintering at about 1400DEG C to form the final sheet abrasive particle. The abrasive product with specific thickness can be obtained in the invention, is convenient to demold, and has various shapes comprising at least two of a sheet triangular shape, a cylindrical shape, a rhombus shape, a square shape and an irregular shape.
Description
Technical field
The present invention relates to abrasive techniques field, in particular a kind of have the crushing grain of design thickness, the abrasive product using it to manufacture and manufacture method thereof.
Background technology
Abrasive particle and the abrasive product manufactured by abrasive particle are used in grinding in manufacture course of products, arrangement or grinding multiple material and surface.Chinese invention patent 200880124918.X discloses a kind of crushing grain of shaping, the abrasive product using it to manufacture and manufacture method thereof, the contriver of this patent passes through dry Abrasive particle precursor in a mold, causing most of Abrasive particle precursor in this way broken, just can make less abrasive particle by having compared with the mould of large cavity.Or use a pair roller to apply normal force to mould, bend to make Abrasive particle precursor and break.The method needs to spray releasing agent, adds a lot of cost of labor, material cost; Shortcoming two: efficiency is low, need by roller machine by cavity very little for material press-in, often a roll extrusion can not complete, and needs by roll extrusion repeatedly; Shortcoming three: the demoulding is difficult, even needs to have been come by ultrasonic vibration device.
Summary of the invention
Technical problem to be solved by this invention provides a kind of for the deficiencies in the prior art to have the crushing grain of design thickness, the abrasive product using it to manufacture and manufacture method thereof.
Technical scheme of the present invention is as follows:
There is a manufacture method for the crushing grain of design thickness, comprise the following steps:
A1, first prepares the loft drier of horizontal positioned and inside and has the larger drying tray of the surface-area of single cavity;
A2, gets the raw materials ready according to following weight part: boehmite: deionized water: 1mol/L nitric acid=100: 200-500: 30 merge, and mix 5-10 minute and obtain slurry in high-speed mixer;
A3, slurry needed for design thickness and drying tray volume computing, get required slurry to pour in described drying tray and to be evenly distributed, dry 4-6 hour at 105 DEG C, plates are laid in drying tray equably, are completely separated with drying tray, do not use releasing agent to pass through to topple over and plates can be collected, obtain the sheet dry body of desired thickness, then the sheet dry body collected is crushed to desired particle size;
A4, calcines the sheet Abrasive particle precursor after fragmentation at 700 DEG C, then soaks into (in corresponding oxide) with the mixed nitrate solution of following concentration: 0.5-5%MgO, 0.5-5%Y
2o
3, 0.5-5%La
2o
3, 0.5-5%Nd
2o
3and the CoO of 0.1-0.5%, in Abrasive particle precursor, introduce rare earth composition, in later stage sintering process, rare earth element to be solid-solution in α-al2o3crystal and to produce the nucleus of proper ratio and size, thus significantly promotes toughness and the hardness of abrasive material; Described mixed nitrate solution is preferably: 1-2%MgO, 2-5%Y
2o
3, 3-5%La
2o
3, 3-4%Nd
2o
3and the CoO of 0.1-0.4%.
A5, removes excessive nitrate solution, and makes the sheet Abrasive particle precursor that soaks into dry, then calcined abrasive particle again at 700 DEG C, and sinters at about 1400 DEG C, forms final sheet abrasive particle.
Described manufacture method, described drying tray is stainless steel or acrylic plastering material.
Described manufacture method, described single cavity is square or rectangular cavity, cavity thickness 0.6-10mm, and cavity specification is square or rectangular, and specification is 10-100cm × 10-100cm.
Described manufacture method; the breaking method of described sheet abrasive particle adopts following methods: in 800 type sieve shakers, place caoutchouc elasticity ball, material ball ratio is 1: 1, by the vibration of sieve shaker and beating of rubber sphere; sheet abrasive particle can be broken and be fallen by screen cloth, obtains the granularity of design.
The crushing grain with design thickness prepared by above-mentioned arbitrary described manufacture method, its shape comprise sheet trilateral, column, rhombus, square, irregularly shaped at least two kinds.
Adopt abrasive material aftertreatment products prepared by described crushing grain, comprise silane surface treatment product, ferric oxide and enamel surface treated product, oxidation is bored and enamel surface treated product.Prepare abrasive material aftertreatment products and adopt common process.
The abrasive product adopting described crushing grain or described abrasive material aftertreatment products to prepare, comprises bonded abrasive tool and coated abrasive tool.Prepare abrasive product and adopt common process.
Adopt such scheme, the present invention, by the optimized choice to mould in the middle of technique, can obtain the abrasive product of specific thicknesses, and be convenient in demoulding, and not needing to use releasing agent, can realize the complete demoulding by toppling over;
By can obtain the abrasive product of various shape to the optimized choice of breaking method, comprise sheet trilateral, column, rhombus, square, irregularly shaped at least two kinds.
By introducing rare earth composition in Abrasive particle precursor, in later stage sintering process, rare earth element is solid-solution in α-Al
2o
3produce the nucleus of proper ratio and size in crystal, thus significantly promote toughness and the hardness of abrasive material.
Accompanying drawing explanation
Fig. 1 is the various sheet abrasive particle shapes that embodiment 1 obtains;
Fig. 2 is the side photo of the sheet abrasive particle that embodiment 1 obtains;
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
First prepare the loft drier of horizontal positioned and inside and there is larger stainless steel (or the acrylic plastering material) drying tray of the surface-area of single cavity, in the present embodiment, this single cavity is square, specification is 26cm × 26cm, level must be ensured after drying tray puts into loft drier, otherwise the product of production will there will be problem in uneven thickness.
By 100 parts of boehmites (DISPERAL, Sasol North America Inc.), 300 parts of deionized waters, 30 parts of 1mol/L salpeter solutions merge, and mix 5 minutes and obtain slurry in high-speed mixer.
Get 50 grams, gained slurry to pour in the stainless steel drying tray of 26cm × 26cm and to be evenly distributed (thickness is about 0.6mm), drying 4 hours at 105 DEG C, these plates are laid in stainless steel drying tray equably, but to be completely separated with stainless steel drying tray, only need plates to be collected by simply toppling over, obtain the sheet dry body of desired thickness, then the sheet dry body collected is crushed to desired particle size.The breaking method of sheet abrasive particle adopts following methods: in 800 type sieve shakers, place caoutchouc elasticity ball, material ball ratio is 1: 1, and by the vibration of sieve shaker and beating of rubber sphere, sheet abrasive particle can be broken and be fallen by screen cloth, obtains the granularity of design.
Sheet Abrasive particle precursor after fragmentation is calcined at 700 DEG C, then soaks into (in corresponding oxide) with the mixed nitrate solution of following concentration: be MgO, Y of 2% separately
2o
3, La
2o
3, Nd
2o
3and the CoO of 0.3%, in Abrasive particle precursor, introduce rare earth composition, in later stage sintering process, rare earth element is solid-solution in α-Al
2o
3produce the nucleus of proper ratio and size in crystal, thus significantly promote toughness and the hardness of abrasive material.
Remove excessive nitrate solution, and make the sheet Abrasive particle precursor that soaks into dry, then calcined abrasive particle again at 700 DEG C, and sinter at about 1400 DEG C, form final sheet abrasive particle.700 DEG C of calcinings can adopt rotary tube furnace, also can adopt fixed retort furnace.
Embodiment 2-4
On the basis of embodiment 1, embodiment 2-4 adopts different drying tray specification to test, as shown in the table respectively:
Table 1
| Embodiment 2 | Embodiment 3 | Embodiment 4 |
| 0.2cm×0.2cm | 30cm×30cm | 100cm×70cm |
Adopt the drying tray of embodiment 2, after slurry drying, slurry is bonded in drying tray, is difficult to the demoulding; Embodiment 3 and embodiment 4 are all easy to the demoulding.
Embodiment 5-7
On the basis of embodiment 1, the formula of embodiment 5-7 to different slurry is tested, and embodiment 5-7 all prepares desirable abrasive particle:
Table 2
Embodiment 8-10
On the basis of embodiment 1, embodiment 8-10 adopts the mixed nitrate solution of different concns to test, and embodiment 8-10 all prepares desirable abrasive particle:
Table 2
| Embodiment 8 | Embodiment 9 | Embodiment 10 |
| 2％MgO、2％Y 2O 3、3％La 2O 3、 | 1％MgO、5％Y 2O 3、5％La 2O 3、 | 1％MgO、3％Y 2O 3、3％La 2O 3、 |
| 3％Nd 2O 3And the CoO of 0.3% | 4％Nd 2O 3And the CoO of 0.1% | 3％Nd 2O 3And the CoO of 0.4% |
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (9)
1. there is a manufacture method for the crushing grain of design thickness, it is characterized in that, comprise the following steps:
A1, first prepares the loft drier of horizontal positioned and inside and has the larger drying tray of the surface-area of single cavity;
A2, gets the raw materials ready according to following weight part: boehmite: deionized water: 1mol/L nitric acid=100: 200-500: 30 merge, and mix 5-10 minute and obtain slurry in high-speed mixer;
A3, slurry needed for design thickness and drying tray volume computing, get required slurry to pour in described drying tray and to be evenly distributed, dry 4-6 hour at 105 DEG C, plates are laid in drying tray equably, are completely separated with drying tray, do not use releasing agent to pass through to topple over and plates can be collected, obtain the sheet dry body of desired thickness, then the sheet dry body collected is crushed to desired particle size;
A4, sheet Abrasive particle precursor after fragmentation is calcined at 700 DEG C, then soak into (in corresponding oxide) with the mixed nitrate solution of following concentration: the sheet Abrasive particle precursor after fragmentation is calcined at 700 DEG C, then soak into (in corresponding oxide) with the mixed nitrate solution of following concentration: 0.5-5%MgO, 0.5-5%Y
2o
3, 0.5-5%La
2o
3, 0.5-5%Nd
2o
3and the CoO of 0.1-0.5%, in Abrasive particle precursor, introduce rare earth composition, in later stage sintering process, rare earth element is solid-solution in α-Al
2o
3nucleus is produced in crystal;
A5, removes excessive nitrate solution, and makes the sheet Abrasive particle precursor that soaks into dry, then calcined abrasive particle again at 700 DEG C, and sinters at about 1400 DEG C, forms final sheet abrasive particle.
2. manufacture method according to claim 1, is characterized in that, described drying tray is stainless steel or acrylic plastering material.
3. manufacture method according to claim 1, is characterized in that, described single cavity is square or rectangular cavity, cavity thickness 0.6-10mm, and cavity specification is square or rectangular, and specification is 10-100cm × 10-100cm.
4. manufacture method according to claim 1; it is characterized in that; the breaking method of described sheet abrasive particle adopts following methods: in 800 type sieve shakers, place caoutchouc elasticity ball; material ball ratio is 1: 1; by the vibration of sieve shaker and beating of rubber sphere; sheet abrasive particle can be broken and be fallen by screen cloth, obtains the granularity of design.
5. manufacture method according to claim 1, is characterized in that, described mixed nitrate solution is: 1-2%MgO, 2-5%Y
2o
3, 3-5%La
2o
3, 3-4%Nd
2o
3and the CoO of 0.1-0.4%.
6. according to the crushing grain with design thickness prepared by the arbitrary described manufacture method of claim 1-5, its shape comprise sheet trilateral, column, rhombus, square, irregularly shaped at least two kinds.
7. adopt the abrasive material aftertreatment products that described in claim 6 prepared by crushing grain, comprise silane surface treatment product, ferric oxide and enamel surface treated product, cobalt oxide and enamel surface treated product.
8. adopt the abrasive product that described in claim 6 prepared by crushing grain, comprise bonded abrasive tool and coated abrasive tool.
9. adopt the abrasive product that described in claim 7 prepared by abrasive material aftertreatment products, comprise bonded abrasive tool and coated abrasive tool.
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|---|---|---|---|
| CN201510278363.6A CN104962236A (en) | 2015-05-28 | 2015-05-28 | Broken abrasive particle with designed thickness, abrasive product made of broken abrasive particle, and preparation method of broken abrasive particle |
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| CN201510278363.6A CN104962236A (en) | 2015-05-28 | 2015-05-28 | Broken abrasive particle with designed thickness, abrasive product made of broken abrasive particle, and preparation method of broken abrasive particle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114507071A (en) * | 2022-03-05 | 2022-05-17 | 太原理工大学 | High-strength ceramic dielectric material and preparation method thereof |
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| CN102807240A (en) * | 2012-07-27 | 2012-12-05 | 上海度朔磨料磨具有限公司 | Method for preparing pseudo-boehmite and method for preparing microcrystalline fused alumina abrasive |
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| CN114507071A (en) * | 2022-03-05 | 2022-05-17 | 太原理工大学 | High-strength ceramic dielectric material and preparation method thereof |
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Application publication date: 20151007 |