CN106905922A - Method for producing polycrystal cubic boron nitride abrasive materials - Google Patents
Method for producing polycrystal cubic boron nitride abrasive materials Download PDFInfo
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- CN106905922A CN106905922A CN201510973410.9A CN201510973410A CN106905922A CN 106905922 A CN106905922 A CN 106905922A CN 201510973410 A CN201510973410 A CN 201510973410A CN 106905922 A CN106905922 A CN 106905922A
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- boron nitride
- cubic boron
- polycrystal cubic
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- abrasive materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
- C09K3/1418—Abrasive particles per se obtained by division of a mass agglomerated by sintering
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Abstract
The present invention relates to a kind of method for producing polycrystal cubic boron nitride abrasive materials, it is that to use cubic boron nitride micro mist be raw material,, as bonding agent, with TiCN micro mist as sintering aid, prepared by the sintering that polycrystal cubic boron nitride abrasive materials are carried out under high-temperature and high-pressure conditions for mixture with aluminium powder, nickel powder and cobalt powder.The good result for being made high-quality polycrystal cubic boron nitride abrasive materials as raw material sintering with common cubic boron nitride micro mist is the method achieve, has the advantages that easy to operate, production efficiency is high, with low cost, be suitable for polycrystal cubic boron nitride abrasive materials large-scale production.
Description
Technical field
The invention belongs to super-pressure synthesizing cubic boron nitride technical field, particularly a kind of polycrystal cubic boron nitride abrasive materials life
Product method.
Background technology
Cubic boron nitride has the high rigidity for being only second to diamond, better than the heat endurance and chemical stability of diamond,
The grinding field of the ferrous materials such as various steel, iron, nickel and alloy is widely used in as superabrasive.
The content of the invention
Cubic boron nitride abrasive materials point monocrystal abrasive and polycrystalline abrasive grit two types, cubic monocrystalline boron nitride abrasive materials be at present into
Ripe, widely used cubic boron nitride abrasive materials.Polycrystal cubic boron nitride abrasive materials are a kind of promising cubic boron nitrides
Abrasive material, each particle is all polycrystalline structure, has many trickle cubic boron nitride crystals to be combined into.Polycrystalline structure has been taken into account and has been added
Work efficiency rate and machining accuracy, and high temperature strength do not decline substantially.Patent of invention CN87100500 discloses a kind of boron-rich polycrystalline
The preparation method of cubic boron nitride abrasive materials, using boron-rich polycrystal cubic boron nitride, is not added with sintering aid, is re-sintered through HTHP
Obtain the good polycrystal of sintering.It is raw material that this method uses boron-rich polycrystal cubic boron nitride, is difficult to obtain, expensive,
And required high-temperature and high-pressure conditions harshness, thus it is difficult to popularization and application.
Polycrystal cubic boron nitride abrasive materials quality, easy to operate, low cost are ensure that it is an object of the invention to provide one kind
Honest and clean method for producing polycrystal cubic boron nitride abrasive materials.
Realize that the purpose of the present invention is adopted the technical scheme that：The method is to carry out according to the following steps：
1) metallic bond is prepared：Take aluminium powder, nickel powder and cobalt powder of the particle diameter at≤10 microns respectively, and by 60~90 parts of aluminium powder,
8~30 parts of nickel powder, the weight of 2~10 parts of cobalt powder are well mixed, and are made metallic bond standby；
2) sinter mixture is prepared：Cubic boron nitride micro mist, TiCN micro mist and preparation of the particle diameter at≤10 microns are taken respectively
Metallic bond, by 75~95 parts of cubic boron nitride micro mist, 2~10 parts of TiCN micro mist and prepare metallic bond 3
~15 parts of weight is well mixed, and is made sinter mixture standby；
3) sinter：The sinter mixture for preparing is fitted into graphite heating mould, then mould is loaded in high-pressure synthesis cavity,
Under the conditions of 5.5~6.5GPa of pressure, 1300~1800 DEG C of temperature, sinter 120~300 seconds, be made polycrystal cubic boron nitride sintering
Block；
4) crush：Polycrystal cubic boron nitride sintering block is broken into polycrystal cubic boron nitride particle of the particle diameter less than 1 millimeter standby
With；
5) dilute acid pretreatment：By sulfuric acid or salt that the polycrystal cubic boron nitride particle mass percent concentration of preparation is 20~30%
Acid or aqueous solution of nitric acid are according to polycrystal cubic boron nitride particle: sulfuric acid or hydrochloric acid or aqueous solution of nitric acid=1: 2~4 weight proportion
After mixing, soak 8~16 hours at normal temperatures, filter off acid solution, rinsed repeatedly to neutrality with clear water, and it is standby after drying；
6) alkali process：By through hydrogen that the polycrystal cubic boron nitride particle after dilute acid pretreatment and mass percent concentration are 20~30%
Sodium oxide molybdena or potassium hydroxide aqueous solution press polycrystal cubic boron nitride particle: NaOH or potassium hydroxide aqueous solution=1: 2~4
After weight proportion mixing, soaked 1~2 hour at a temperature of 300~350 DEG C, filter off alkali lye, and rinsed to neutrality, drying with water
The polycrystal cubic boron nitride abrasive materials of the application are made afterwards.
The TiCN molecular formula is TiCXN1-X, 0≤X≤1
Polycrystal cubic boron nitride abrasive materials are produced according to the method described above, by the catalysis of metallic bond and sintering aid TiCN
Effect, realizes the good effect for being made high-quality polycrystal cubic boron nitride abrasive materials as raw material sintering with common cubic boron nitride micro mist
Really, have the advantages that easy to operate, production efficiency is high, with low cost, be suitable for polycrystal cubic boron nitride abrasive materials large-scale production.
Method for producing polycrystal cubic boron nitride abrasive materials of the invention is to summarize the basis of long-term practical experience by inventor
On, and as obtained by substantial amounts of experimental study.The method uses common cubic boron nitride micro mist, and by metallic bond and
The catalytic action of sintering aid TiCN, sintering is made the polycrystal cubic boron nitride mill of function admirable under high-temperature and high-pressure conditions
Material.Each particle is all the polycrystalline structure for having many trickle cubic boron nitride crystals to be combined into, and the abrasive material is used for black
The processing of metal, can greatly improve processing efficiency and machining accuracy, and resistance to elevated temperatures is splendid.With reference to embodiment to this
The method for producing polycrystal cubic boron nitride abrasive materials of invention is described further.
Embodiment 1
The present embodiment method for producing polycrystal cubic boron nitride abrasive materials is：Particle diameter is taken respectively first at 10 microns with thin aluminium powder, nickel
Powder and cobalt powder, and be well mixed by the weight of 60 parts of aluminium powder, 8 parts of nickel powder, 2 parts of cobalt powder, it is made metallic bond.Divide again
Particle diameter is not taken in 10 microns of metallic bonds with thin cubic boron nitride micro mist, TiCN micro mist and preparation, wherein nitrogen carbon
It is TiC to change titanium molecule formulaXN1-X, 0≤X≤1.By 75 parts of cubic boron nitride micro mist, 2 parts of TiCN micro mist and the metal for preparing
The weight that 3 parts of bonding agent is well mixed, and is made sinter mixture.Then, the sinter mixture that will be prepared loads graphite
In heating mould, mould is loaded in high-pressure synthesis cavity, under the conditions of pressure 5.5GPa, 1300 DEG C of temperature, sintered 120 seconds,
It is made polycrystal cubic boron nitride sintering block.Polycrystalline is stood using the broken, jaw crusher of hammer, double-roll crusher and ball mill successively
The boron nitride sintered block in side is broken into polycrystal cubic boron nitride particle of the particle diameter less than 1 millimeter；By polycrystal cubic boron nitride particle
With the sulfuric acid or hydrochloric acid or aqueous solution of nitric acid that mass percent concentration is 20% according to polycrystal cubic boron nitride particle: sulfuric acid or salt
Acid or aqueous solution of nitric acid=1: after 2 weight proportion mixing, soak 16 hours, remove polycrystal cubic boron nitride particle at normal temperatures
The metal on surface, filters off acid solution, is rinsed repeatedly with clear water to neutrality and dried；It is again 20% hydrogen-oxygen with mass percent concentration
Change sodium or potassium hydroxide aqueous solution presses polycrystal cubic boron nitride particle: NaOH or potassium hydroxide aqueous solution=1: 2 weight
After proportioning mixing, soaked 2 hours at a temperature of 300~350 DEG C, particle surface is purified, filter off alkali lye, with water by polycrystalline
It is neutrality that cubic boron nitride particle is rinsed to pH value, and the polycrystal cubic boron nitride mill of the application is made after feeding drying machine drying
Material.Finally, polycrystal cubic boron nitride abrasive materials are sieved into the abrasive material of each level granularity of 18/20~325/400 mesh by national standard,
Bag distribution packaging, you can sold as polycrystal cubic boron nitride abrasive materials finished product.After testing, the impact of 80/100 granularity abrasive grain is tough
Property TI values be 79.8.
Embodiment 2
The present embodiment method for producing polycrystal cubic boron nitride abrasive materials is essentially identical with the method for embodiment 1, and difference is：Metal knot
The weight of mixture each component raw material is：75 parts of aluminium powder, 14 parts of nickel powder, 6 parts of cobalt powder；Into sinter mixture each component raw material
Weight be：85 parts of cubic boron nitride micro mist, 6 parts of TiCN micro mist, 9 parts of metallic bond；Sintering pressure is
6GPa, sintering temperature is 1500 DEG C, and sintering time is 210 seconds；Carry out sulfuric acid during dilute acid pretreatment or hydrochloric acid or aqueous solution of nitric acid
Mass percent concentration is 25%, polycrystal cubic boron nitride particle: the weight proportion of sulfuric acid or hydrochloric acid or aqueous solution of nitric acid is；It is many
Brilliant cubic boron nitride particle: sulfuric acid or hydrochloric acid or aqueous solution of nitric acid=1: 3, soak time is 12 hours；Carry out hydrogen during alkali process
The mass percent concentration of sodium oxide molybdena or potassium hydroxide aqueous solution is 25%, polycrystal cubic boron nitride particle and NaOH or hydrogen
The mixed weight of oxidation aqueous solutions of potassium matches and is：Polycrystal cubic boron nitride particle: NaOH or potassium hydroxide aqueous solution=1:
3, treatment temperature is 330 DEG C of temperature, and soak time is 1.5 hours.After testing, the impact flexibility TI of 80/100 granularity abrasive grain
Be worth is 81.3.
Embodiment 3
The present embodiment method for producing polycrystal cubic boron nitride abrasive materials is essentially identical with the method for embodiment 1, and difference is：Metal knot
The weight of mixture each component raw material is：90 parts of aluminium powder, 30 parts of nickel powder, 10 parts of cobalt powder；It is former into sinter mixture each component
The weight of material is：95 parts of cubic boron nitride micro mist, 10 parts of TiCN micro mist, 15 parts of metallic bond；Sintering pressure
It is 6.5GPa, sintering temperature is 1800 DEG C, and sintering time is 300 seconds；Carry out during dilute acid pretreatment sulfuric acid or hydrochloric acid or nitric acid is water-soluble
The mass percent concentration of liquid is 30%, polycrystal cubic boron nitride particle: the weight proportion of sulfuric acid or hydrochloric acid or aqueous solution of nitric acid
For；Polycrystal cubic boron nitride particle: sulfuric acid or hydrochloric acid or aqueous solution of nitric acid=1: 4, soak time is 8 hours；Carry out alkali process
When NaOH or the mass percent concentration of potassium hydroxide aqueous solution be 30%, polycrystal cubic boron nitride particle and NaOH
Or the mixed weight proportioning of potassium hydroxide aqueous solution is：Polycrystal cubic boron nitride particle: NaOH or potassium hydroxide aqueous solution
=1: 4, treatment temperature is 350 DEG C of temperature, and soak time is 1 hour.After testing, the impact flexibility of 80/100 granularity abrasive grain
TI values are 83.
Claims (1)
1. a kind of method for producing polycrystal cubic boron nitride abrasive materials, it is characterised in that：The method is to carry out according to the following steps：
1）Prepare metallic bond：Particle diameter is taken respectively at 10 microns with thin aluminium powder, nickel powder and cobalt powder, and by aluminium powder 60~90
Part, the weight of 8~30 parts of nickel powder, 2~10 parts of cobalt powder are well mixed, and are made metallic bond standby；
2）Prepare sinter mixture：Particle diameter is taken respectively at 10 microns with thin cubic boron nitride micro mist, TiCN micro mist and system
Standby metallic bond, by 75~95 parts of cubic boron nitride micro mist, 2~10 parts of TiCN micro mist and the metallic bond for preparing
3~15 parts of weight is well mixed, and is made sinter mixture standby；
3）Sintering：The sinter mixture for preparing is fitted into graphite heating mould, then mould is loaded in high-pressure synthesis cavity,
Under the conditions of 5.5~6.5GPa of pressure, 1300~1800 DEG C of temperature, sinter 120~300 seconds, be made polycrystal cubic boron nitride sintering
Block；
4）Crush：Polycrystal cubic boron nitride sintering block is broken into polycrystal cubic boron nitride particle of the particle diameter less than 1 millimeter standby
With；
5）Dilute acid pretreatment：By sulfuric acid or salt that the polycrystal cubic boron nitride particle mass percent concentration of preparation is 20~30%
Acid or aqueous solution of nitric acid are according to polycrystal cubic boron nitride Ke Li ︰ sulfuric acid or the weight proportion of hydrochloric acid or aqueous solution of nitric acid=1 ︰ 2~4
After mixing, soak 8~16 hours at normal temperatures, filter off acid solution, rinsed repeatedly to neutrality with clear water, and it is standby after drying；
6）Alkali process：By through hydrogen that the polycrystal cubic boron nitride particle after dilute acid pretreatment and mass percent concentration are 20~30%
Sodium oxide molybdena or potassium hydroxide aqueous solution press polycrystal cubic boron nitride Ke Li ︰ NaOH or potassium hydroxide aqueous solution=1 ︰'s 2~4
After weight proportion mixing, soaked 1~2 hour at a temperature of 300~350 DEG C, filter off alkali lye, and rinsed well with water, after drying
It is made polycrystal cubic boron nitride abrasive materials.
Priority Applications (1)
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| CN201510973410.9A CN106905922A (en) | 2015-12-23 | 2015-12-23 | Method for producing polycrystal cubic boron nitride abrasive materials |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020060841A1 (en) * | 2018-09-17 | 2020-03-26 | Diamond Innovations, Inc. | Cubic boron nitride particle population with highly-etched particle surface and high toughness index |
| CN113444490A (en) * | 2021-06-25 | 2021-09-28 | 郑州益奇超硬材料有限公司 | Polycrystalline cubic boron nitride abrasive and preparation method thereof |
-
2015
- 2015-12-23 CN CN201510973410.9A patent/CN106905922A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020060841A1 (en) * | 2018-09-17 | 2020-03-26 | Diamond Innovations, Inc. | Cubic boron nitride particle population with highly-etched particle surface and high toughness index |
| CN112739645A (en) * | 2018-09-17 | 2021-04-30 | 戴蒙得创新股份有限公司 | Population of cubic boron nitride particles with highly corrosive particle surfaces and high toughness index |
| IL281547B1 (en) * | 2018-09-17 | 2024-05-01 | Diamond Innovations Inc | Cubic boron nitride particle population with highly-etched particle surface and high toughness index |
| CN113444490A (en) * | 2021-06-25 | 2021-09-28 | 郑州益奇超硬材料有限公司 | Polycrystalline cubic boron nitride abrasive and preparation method thereof |
| CN113444490B (en) * | 2021-06-25 | 2022-08-26 | 郑州益奇超硬材料有限公司 | Polycrystalline cubic boron nitride abrasive and preparation method thereof |
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