CN102717344A - Pressed compact crushing method for preparing CBN/Dia oilstone with high dispersible uniformity - Google Patents
Pressed compact crushing method for preparing CBN/Dia oilstone with high dispersible uniformity Download PDFInfo
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- CN102717344A CN102717344A CN2011100766017A CN201110076601A CN102717344A CN 102717344 A CN102717344 A CN 102717344A CN 2011100766017 A CN2011100766017 A CN 2011100766017A CN 201110076601 A CN201110076601 A CN 201110076601A CN 102717344 A CN102717344 A CN 102717344A
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Abstract
The invention discloses a pressed compact crushing method for preparing a CBN/Dia oilstone with high dispersible uniformity. The method comprises the following steps: firstly, an oilstone abrasive material in which metal powder and CBN/Dia superhard particles are preliminarily mixed is pressed into a block to obtain the pressed compact; then, the pressed compact is crushed into small blocks; and finally, aggregated superhard particle granules are separated through being filtered by a screen, and undersized particles obtained are the superhard particles which are wrapped by the metal powder on surfaces or side surfaces, i.e., the uniformly-dispersed CBN/Dia oilstone. The method does not employ complex equipment or approaches. By using a common press and a common stainless steel screen used in oilstone production, the uniform dispersion of CBN/Dia superhard particles, etc., is realized easily and rapidly and the disperse effect is substantial, and simultaneously granules which satisfy the compacting usage are obtained.
Description
Technical field
The present invention relates to the method that a kind of pressed compact crush method prepares high dispersive uniformity CBN (cubic boron nitride)/Dia (diamond) oilstone.
Background technology
The production method of oilstone is generally; Use materials such as metal, pottery or resin through being processed to form coating to the superhard particles such as CBN/Dia of wherein mixing; And have certain hold, and adding man-hour, superhard particles such as CBN/Dia are carried out grinding and passivation gradually to workpiece; Follow the wearing and tearing of materials such as metal, pottery or resin simultaneously, superhard particles such as the CBN/Dia of passivation are also peeled off thereupon.Therefore the dispersion of superhard particles in materials such as metal, pottery or resin such as CBN/Dia is most important to the precision of finished surface.Assemble the scuffing that agglomerating superhard particles possibly form finished surface for many.Because not evenly by coatings such as metals, there is deviation in hold simultaneously, and it is inconsistent each position wearing and tearing to occur, the situation that the life-span reduces.
During existing oilstone abrasive material (mixed-powder of superhard particles+metal dust) is produced; There is not the dispersing uniformity that simple effective means realizes superhard particles such as CBN/Dia; Existing ball-milling method improves limited; Electroplate, some specific process such as arrangement or cost are higher or need special installation in order, can't satisfy needs of production.
In view of this, the inventor specializes in and develops a kind of method of utilizing the pressed compact crush method to prepare high dispersive uniformity CBN (cubic boron nitride)/Dia (diamond) oilstone, and this case produces thus.
Summary of the invention
The object of the present invention is to provide a kind of pressed compact crush method to prepare the method for high dispersive uniformity CBN/Dia oilstone, reducing cost, and satisfy needs of production.
To achieve these goals, technical scheme of the present invention is following:
At first, the oilstone abrasive material briquet with metal dust and CBN/Dia superhard particles are tentatively mixed obtains pressed compact;
Again pressed compact is broken into fritter;
At last, the screen cloth that passes through is opened the superhard particles granule filtration of assembling, and screenings is the superhard particles of surface or side coated metal powder, promptly finely dispersed CBN/Dia oilstone.
The pressing pressure of said briquet is generally 50Mpa.
Said pressed compact is to use the mode of Mechanical Crushing or hand breaking to be broken into fritter.
Big 50 μ m of said screen cloth void ratio superhard particles particle mean size and be not more than 1.5 times of particle mean sizes.
Said screenings is the superhard particles that 20 μ m metal dusts are wrapped up in surface or side.
After adopting such scheme, the present invention is to use compacting to obtain the mechanical bond intensity that pressed compact guarantees CBN/Dia superhard particles and metal dust, re-uses screen cloth and sieves and guarantee that CBN/Dia superhard particles granule is filtered dispersion.The present invention does not use complex device or means; Only use common press and common stainless steel screen cloth in the oilstone production; Can realize the even dispersion of superhard particles such as CBN/Dia quickly and easily, dispersion effect is remarkable, and the finely dispersed while can be met the pellet that compacting is used.
Below in conjunction with specific embodiment the present invention is described further.
The specific embodiment
Preferred embodiment of the present invention.
The pressure of oilstone abrasive material about 50Mpa that earlier metal dust and CBN/Dia superhard particles is tentatively mixed presses down processes piece, need simply form certain intensity and not cave in and get final product the acquisition pressed compact.Superhard particles and metal dust have certain mechanical inlay resultant force in the briquet under the pressing pressure effect, and superhard particles wrapped up by metal dust, as occurring in the common pressing process not coating fully or the situation of some gatherings.
Re-use Mechanical Crushing or manual work also can, pressed compact is broken into fritter.
At last; The screen cloth that passes through; The superhard particles granule filtration of assembling is opened; Big 50 μ m of screen cloth void ratio superhard particles particle mean size and be not more than 1.5 times of particle mean sizes, screenings is the superhard particles that 20 μ m metal dusts are wrapped up in surface or side, some particles can not take place again directly contact clustering phenomena.
Experiment gained CBN/Dia oilstone is through 50 times of visual field metallographic microscope observed results such as table 1.
50 times of visual fields of table 1 metallographic microscope observed result
| Sequence number | 2 reunions | 3 reunions | >;=4 reunions |
| 1 | 9 | 7 | 3 |
| 2 | 8 | 6 | 3 |
| 3 | 8 | 3 | 2 |
| 4 | 6 | 3 | 2 |
| 5 | 7 | 2 | 1 |
| 6 | 8 | 3 | 2 |
| The pressed compact crush method | 2 | 2 | 0 |
Can find out that by table values the pressed compact crush method can significantly reduce the reunion situation of superhard particles such as CBN/Dia in the abrasive material.
Claims (5)
1. the pressed compact crush method prepares the method for high dispersive uniformity CBN/Dia oilstone, it is characterized in that step is following:
At first, the oilstone abrasive material briquet with metal dust and CBN/Dia superhard particles are tentatively mixed obtains pressed compact;
Again pressed compact is broken into fritter;
At last, the screen cloth that passes through is opened the superhard particles granule filtration of assembling, and screenings is the superhard particles of surface or side coated metal powder, promptly finely dispersed CBN/Dia oilstone.
2. pressed compact crush method as claimed in claim 1 prepares the method for high dispersive uniformity CBN/Dia oilstone, it is characterized in that: the pressing pressure of said briquet is 50Mpa.
3. pressed compact crush method as claimed in claim 1 prepares the method for high dispersive uniformity CBN/Dia oilstone, it is characterized in that: said pressed compact is to use the mode of Mechanical Crushing or hand breaking to be broken into fritter.
4. pressed compact crush method as claimed in claim 1 prepares the method for high dispersive uniformity CBN/Dia oilstone, it is characterized in that: big 50 μ m of said screen cloth void ratio superhard particles particle mean size and be not more than 1.5 times of particle mean sizes.
5. pressed compact crush method as claimed in claim 1 prepares the method for high dispersive uniformity CBN/Dia oilstone, it is characterized in that: said screenings is the superhard particles that 20 μ m metal dusts are wrapped up in surface or side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110076601.7A CN102717344B (en) | 2011-03-29 | 2011-03-29 | Pressed compact crush method prepares the method for high dispersive uniformity CBN/Dia oilstone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110076601.7A CN102717344B (en) | 2011-03-29 | 2011-03-29 | Pressed compact crush method prepares the method for high dispersive uniformity CBN/Dia oilstone |
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| CN102717344A true CN102717344A (en) | 2012-10-10 |
| CN102717344B CN102717344B (en) | 2015-07-29 |
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| CN201110076601.7A Active CN102717344B (en) | 2011-03-29 | 2011-03-29 | Pressed compact crush method prepares the method for high dispersive uniformity CBN/Dia oilstone |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020095871A1 (en) * | 2000-10-16 | 2002-07-25 | Mcardle James L. | Method of making ceramic aggregate particles |
| CN101323438B (en) * | 2008-06-06 | 2010-04-21 | 郑州中南杰特超硬材料有限公司 | Cubic boron nitride synthetic method |
| CN101862827A (en) * | 2009-10-30 | 2010-10-20 | 西安泽豪实业有限责任公司 | Formula and production process of diamond ultrathin cutting blade for cutting quartz glass |
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2011
- 2011-03-29 CN CN201110076601.7A patent/CN102717344B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020095871A1 (en) * | 2000-10-16 | 2002-07-25 | Mcardle James L. | Method of making ceramic aggregate particles |
| CN101323438B (en) * | 2008-06-06 | 2010-04-21 | 郑州中南杰特超硬材料有限公司 | Cubic boron nitride synthetic method |
| CN101862827A (en) * | 2009-10-30 | 2010-10-20 | 西安泽豪实业有限责任公司 | Formula and production process of diamond ultrathin cutting blade for cutting quartz glass |
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| CN102717344B (en) | 2015-07-29 |
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