CN109465759A - A kind of diamond intensified strong type ceramic bond super-hard abrasive tool of foam and preparation method thereof - Google Patents
A kind of diamond intensified strong type ceramic bond super-hard abrasive tool of foam and preparation method thereof Download PDFInfo
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- CN109465759A CN109465759A CN201811609518.XA CN201811609518A CN109465759A CN 109465759 A CN109465759 A CN 109465759A CN 201811609518 A CN201811609518 A CN 201811609518A CN 109465759 A CN109465759 A CN 109465759A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/14—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
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- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The present invention provides diamond intensified strong type ceramic bond super-hard abrasive tools of a kind of foam and preparation method thereof, belong to grinding field.The working lining of super-hard abrasive tool provided by the invention is prepared by diamond abrasive, vitrified bond and pore creating material；The grinding wheel concentration of the diamond abrasive is 30~200%；The mass fraction of foam diamond is 5~100% in the diamond abrasive；It is in terms of 100% by the total volume of working lining raw material, the content of the vitrified bond is 20~87.5%；The content of the pore creating material is 5~30%.The present invention substitutes the relatively smooth diamond in traditional surface using foam diamond, bonding agent is improved to the holding power of abrasive material, and the diamond of porous structure can be under lesser pressure through the cutting edge that micro- broken generation of itself part is new, to guarantee efficient, the high-accuracy processing of grinding tool in grinding process；Preparation method step provided by the invention is simple, is suitble to standardization production.
Description
Technical field
The present invention relates to grinding technique field, in particular to a kind of diamond intensified strong type ceramic bond super-hard abrasive tool of foam
And preparation method thereof.
Background technique
Superhard material grinding tool is primarily referred to as using diamond or cubic boron nitride as abrasive grain, by means of metal, ceramics or resin
Equal bonding agents, a kind of grinding tool with certain shapes and intensity prepared.Relative to metal and resin, vitrified bond
There is outstanding advantages of self-sharpening is good, grinding efficiency is high, it has also become accurate, Ultra-precision Turning first-selected instrument.
In current superhard material diamond abrasive tool, using the relatively smooth diamond particles in common surface,
Since diamond intensity is higher, it is difficult to reach by the broken of itself from sharp, only equal working faces mill in Grinding Process
It is whole after plain grinding is blunt to fall off, until new diamond particles exposure could form new cutting edge.Therefore, the benefit of diamond particles
It can be greatly reduced with rate and the processing efficiency of grinding tool, and also have larger impact to the processing quality of workpieces processing.
Summary of the invention
In view of this, it is an object of that present invention to provide a kind of diamond intensified strong type ceramic bond super-hard abrasive tool of foam and its
Preparation method.The diamond intensified strong type ceramic bond super-hard abrasive tool of foam provided by the invention is high in machining efficiency, processing quality is good,
It is very suitable for accurate, precision grinding machining, and preparation method is simple, is easy to carry out industrialized production.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
A kind of diamond intensified strong type ceramic bond super-hard abrasive tool of foam, including tool matrix and it is bonded in the grinding tool base
Working lining on body, the working lining are prepared by diamond abrasive, vitrified bond and pore creating material；
The grinding wheel concentration of the diamond abrasive is 30~200%；The quality of foam diamond in the diamond abrasive
Score is 5~100%；
It is in terms of 100% by the total volume of working lining raw material, the content of the vitrified bond is 20~87.5%；It is described to make
The content of hole agent is 5~30%.
Preferably, the granularity of the foam diamond is 5~120 μm.
Preferably, the component of the vitrified bond includes: SiO247~75mol%, Al2O35~15mol%, B2O3
5~10mol%, K2O 3~8mol%, Li2O 3~8mol%, ZrO20.5~5mol%, Bi2O33~7mol%.
Preferably, the pore creating material is one or more of hollow alumina ball, refined naphthalene, coke, wood powder and sodium carbonate.
The present invention provides the preparation methods of super-hard abrasive tool described in above scheme, comprising the following steps:
(1) diamond abrasive, vitrified bond and pore creating material are subjected to ball milling mixing, obtain mixture；
(2) by mixture cold moudling in a mold, several grinding tool locking nubs are obtained；
(3) it will be bonded on tool matrix after grinding tool locking nub sintering, obtain the diamond intensified strong type Ceramic bond of foam
Agent super-hard abrasive tool.
Preferably, the diamond abrasive is before ball milling mixing further include: by the diamond abrasive in cellulose solution
Middle wetting.
Preferably, the cellulose solution includes sodium cellulose glycolate solution and/or cmc soln；
The mass concentration of the cellulose solution is 1~20%.
Preferably, in the step (1) ball milling mixing time >=12h.
Preferably, the pressure of cold moudling is 40~200MPa in the step (2), and the time is 1~5min.
Preferably, the temperature being sintered in the step (3) is 650~900 DEG C, and soaking time is 2~10h.
The present invention provides a kind of diamond intensified strong type ceramic bond super-hard abrasive tools of foam, including tool matrix and bonding
Working lining on the tool matrix, the working lining are prepared by diamond abrasive, vitrified bond and pore creating material；Institute
The grinding wheel concentration for stating diamond abrasive is 30~200%；In the diamond abrasive mass fraction of foam diamond be 5~
100%；It is in terms of 100% by the total volume of working lining raw material, the content of the vitrified bond is 20~87.5%；The pore-creating
The content of agent is 5~30%.It is relatively smooth that the present invention substitutes the surface applied in traditional super-hard abrasive tool using foam diamond
Diamond increase the contact area with bonding agent using the vesicular texture of foam diamond, improve bonding agent and it held
Power；In addition, the diamond of porous structure can pass through micro- broken generation of itself part in grinding process under lesser pressure
New cutting edge, to ensure that efficient, the high-accuracy processing of grinding tool；Super-hard abrasive tool provided by the invention is high in machining efficiency, makes
It is long with the service life, and the surface quality of workpieces processing can be improved.Embodiment the result shows that, use super-hard abrasive tool pair provided by the invention
Silicon single crystal rod carries out grinding experiment, and grinding efficiency can reach 654s/ root, and crystal bar surface roughness is only 0.25~0.34 μ
m。
The present invention provides the preparation method of the diamond intensified strong type ceramic bond super-hard abrasive tool of foam described in above scheme,
Preparation method step provided by the invention is simple, easy to operate, is suitble to standardization production.
Detailed description of the invention
Fig. 1 is the exterior appearance figure of foam diamond；
Fig. 2 is the exterior appearance figure of normal diamond.
Specific embodiment
The present invention provides a kind of diamond intensified strong type ceramic bond super-hard abrasive tools of foam, including tool matrix and bonding
Working lining on the tool matrix, the working lining are prepared by diamond abrasive, vitrified bond and pore creating material；
The grinding wheel concentration of the diamond abrasive is 30~200%；The quality of foam diamond in the diamond abrasive
Score is 5~100%；
It is in terms of 100% by the total volume of working lining raw material, the content of the vitrified bond is 20~87.5%；It is described to make
The content of hole agent is 5~30%.
In the present invention, the grinding wheel concentration of the diamond abrasive is 30~200%, preferably 50~150%, more preferably
It is 80~120%；In the art, the content habit of abrasive material is shown with the tabulation of grinding wheel concentration, it is specified that the volume in super hard abrasive accounts for
Super-hard abrasive tool working lining volume 25% when, grinding wheel concentration is 100% (i.e. the 1/4 of grinding wheel concentration is that super hard abrasive exists
Volume fraction in working lining).
In the present invention, in the diamond abrasive foam diamond mass fraction be 5~100%, preferably 50~
100%, further preferably 70~100%；The granularity of the foam diamond is preferably 5~120 μm, more preferably 10~
110 μm, further preferably 20~100 μm.Foam diamond is a kind of surface and the internal special Buddha's warrior attendant with porous structure
Stone (pattern is as shown in Figure 1), for the present invention by foam applications of diamond in super-hard abrasive tool, the surface traditional to replacement is smooth
Diamond (pattern is as shown in Figure 2) increases the contact area with bonding agent using the porous structure of foam diamond, improves and combine
Agent is to its holding power；In addition, the diamond of porous structure can pass through itself part in grinding process under lesser pressure
It is micro- broken and generate new cutting edge, to ensure that efficient, the high-accuracy processing of grinding tool；The present invention is by foam applications of diamond
In ceramic bond super-hard abrasive tool, it can effectively improve the processing efficiency and service life of grinding tool, improve the table of workpieces processing
Face quality.The present invention does not have particular/special requirement to the source of the foam diamond, uses commercially available foam diamond.
It is in terms of 100% by the total volume of working lining raw material, the content of the vitrified bond is 20~87.5%, preferably
30~85%, further preferably 40~80%.In the present invention, the component of the vitrified bond preferably includes: SiO2 47
~75mol%, Al2O35~15mol%, B2O35~10mol%, K2O 3~8mol%, Li2O 3~8mol%, ZrO2
0.5~5mol%, Bi2O33~7mol% more preferably includes: SiO250~75mol%, Al2O35~10mol%, B2O3 6
~8mol%, K2O 4~6mol%, Li2O 4~6mol%, ZrO22~3mol%, Bi2O34~5mol%.
In the present invention, the vitrified bond is preferably prepared by the following method to obtain:
(i) ball milling mixing is carried out after raw material being weighed according to the proportion, obtains mixture；
(ii) water cooling will be carried out after mixture sintering, the material after water cooling is subjected to wet ball grinding, obtains slurry；
(iii) dry ball milling will be carried out after slurry drying, obtains the vitrified bond.
In the present invention, the time of ball milling mixing is preferably 2~8h in the step (i), more preferably 3~6h.
In the present invention, the temperature being sintered in the step (ii) is preferably 1200~1500 DEG C, more preferably 1300~
1400 DEG C, soaking time is preferably 1.5~3h, more preferably 2~2.5h；The heating rate for being warming up to the sintering temperature is preferred
For 3~10 DEG C/min, more preferably 5~8 DEG C/min.In the present invention, the water cooling is specially by the material after heat preservation
It is quickly poured into water.
In the present invention, the time of wet ball grinding is preferably 12~36h in the step total (ii), more preferably 15~
30h；The wet ball grinding is preferably water with solvent, and the material-water ratio of the wet ball grinding is preferably 1~2:1.
In the present invention, temperature dry in the step (iii) is preferably 100~150 DEG C, more preferably 110~130
DEG C, the dry time is preferably 2~8h, more preferably 3~6h.In the present invention, in the step (iii) dry ball milling when
Between preferably 6~12h, more preferably 8~10h.
By the total volume of working lining raw material it is in terms of 100% that the content of the pore creating material is 5~30%, preferably 10~
25%, further preferably 15~20%.In the present invention, the pore creating material be preferably hollow alumina ball, refined naphthalene, coke,
One or more of wood powder and sodium carbonate, more preferably hollow alumina ball；The partial size of the hollow alumina is preferably 10
~50 μm, more preferably 20~40 μm.The present invention adds pore creating material in grinding tool working lining, using pore creating material in grinding process
A large amount of irregular holes are formed, on the one hand play the role of holding bits, chip removal, is on the other hand conducive to grinding fluid and enters, play quickening heat dissipation
With cooling effect.The present invention does not have particular/special requirement to the source of the pore creating material, uses city well known to those skilled in the art
Sell pore creating material.
The present invention provides the preparation methods of super-hard abrasive tool described in above scheme, comprising the following steps:
(1) diamond abrasive, vitrified bond and pore creating material are subjected to ball milling mixing, obtain mixture；
(2) by mixture cold moudling in a mold, several grinding tool locking nubs are obtained；
(3) it will be bonded on tool matrix after mold locking nub sintering, obtain the diamond intensified strong type Ceramic bond of foam
Agent super-hard abrasive tool.
The diamond abrasive, vitrified bond and pore creating material are carried out ball milling mixing by the present invention, obtain mixture.At this
In invention, the diamond abrasive is before ball milling mixing further include: soaks the diamond abrasive in cellulose solution；Institute
It states cellulose solution and preferably includes sodium cellulose glycolate solution and/or cmc soln；The cellulose solution
Mass concentration is preferably 1~20%, and more preferably 5~15%；The solvent of the cellulose solution is water.
In the present invention, the preparation method of the cellulose solution are as follows: will cellulose and water mix after boil 18~for 24 hours,
The cellulose solution is obtained after natural cooling.
The present invention does not have particular/special requirement to the specific method of the wetting, and diamond abrasive is impregnated in cellulose solution
It separates again afterwards.
The present invention reduces diamond particle surfaces tension by soaking diamond particles in cellulose solution, improves
Vitrified bond guarantees that diamond and vitrified bond combine agent material that can uniformly and effectively coat in mixing to its adhesive force
In diamond particle surfaces, to effectively improve bonding agent to the holding power of abrasive grain.
In the present invention, the time of ball milling mixing preferably >=12h, more preferably 12~for 24 hours.In specific implementation of the invention
In example, the specific dosage of each raw material is preferably determined according to the volume of target grinding tool.
After obtaining mixture, mixture cold moudling in a mold is obtained several grinding tool locking nubs by the present invention.This
The number of locking nub is preferably designed in invention according to the diameter of target grinding tool, thickness equidimension, and according to the volume of single locking nub and
Mixture dispensing is carried out cold moudling into mold by the theoretical density of working layer materials.In the present invention, the mill mold is preferred
For steel body grinding tool；The pressure of the cold moudling is preferably 40~200MPa, more preferably 50~100MPa, the cold moudling
Time be preferably 1~5min, more preferably 3~5min.
After obtaining mold locking nub, the mold locking nub is sintered by the present invention.In the present invention, the temperature of the sintering is preferred
It is 650~900 DEG C, more preferably 700~850 DEG C, soaking time is preferably 2~10h, more preferably 3~5h；The sintering
Temperature program is preferred are as follows: initial temperature is room temperature, rises to 300 DEG C with the heating rate of 3~5 DEG C/min, then with 8~10 DEG C/min
Heating rate rise to 500 DEG C, sintering temperature risen to the heating rate of 5~8 DEG C/min after keeping the temperature 1h at 500 DEG C, is kept the temperature
After furnace cooling；The sintering carries out in air atmosphere.
In the present invention, the sintering preferably uses sand buring method, specifically: grinding tool locking nub is placed in saggar, in grinding tool
Locking nub surface bedding silicon carbide, which is placed in sintering equipment, to be sintered；The silicon carbide is preferably black silicon carbide or green carbonization
Silicon, more preferably green silicon carbide；The granularity of the silicon carbide is preferably 40~200 mesh, more preferably 60~120 mesh；The carbon
The overlay thickness of SiClx is preferably 2~5cm, more preferably 3~4cm.
In the present invention, vitrified bond generates certain melting when sintering, liquid phase occurs, and bonding agent is promoted preferably to moisten
Wet diamond particles are conducive to increase holding of the bonding agent to abrasive material, improve the performance of grinding tool, what is obtained after sintering is a kind of tool
There is the vitreum of some strength and hardness.
After sintering, sintered locking nub is bonded on tool matrix by the present invention, obtains the diamond intensified strong type pottery of foam
Porcelain bond super-hard abrasive tool.The present invention preferably first modifies sintered locking nub, so that the geometry flatness and essence of locking nub
Degree reaches requirement, is then bonded again；The finishing is preferably idler wheel finishing.Present invention preferably uses liquid resin binders
It is bonded, after liquid resin solidification, the locking nub can be fixed on tool matrix；The liquid resin is preferably epoxy
Resin；The cured temperature is preferably 150~250 DEG C, and more preferably 150~200 DEG C, the cured time is preferably
1.5~4h, more preferably 2~3h, the heating rate for being warming up to the solidification temperature is preferably 2~6 DEG C/min, more preferably 3
~5 DEG C/min.
The present invention does not have particular/special requirement to the source of the liquid resin, uses commercially available liquid well known to those skilled in the art
Body resin.
In the present invention, the tool matrix is preferably steel body, aluminium body or carbon fiber substrate.
After the completion of bonding, the present invention it is also preferable to include the locking nub surface after fixation is modified again, to ensure that it is full
Sufficient geometry flatness and required precision, the finishing are preferably idler wheel finishing.
Scheme provided by the invention is described in detail below with reference to embodiment, but they cannot be interpreted as pair
The restriction of the scope of the present invention.
Embodiment 1
It prepares diameter 400mm grinding wheel: designing 12 locking nubs of homogeneous phase etc. according to outer diameter, wherein working lining thickness
For 8mm.
Pore creating material is hollow alumina ball.The grinding wheel concentration of diamond abrasive is 30% (volume fraction, grinding wheel concentration system),
Wherein foam diamond quality score is 5%, remaining is normal diamond, and the granularity of all diamonds is 120 μm.Pore creating material contains
Amount is 20%, remaining ingredient is vitrified bond (with the total volume of diamond abrasive, pore creating material and vitrified bond for 100%
Meter).
Vitrified bond ingredient are as follows: SiO275mol%, Al2O35mol%, B2O35mol%, K2O 3mol%, Li2O
6.5mol%, ZrO20.5mol%, Bi2O35mol%.
By diamond abrasive, vitrified bond, pore creating material, weighing is placed in ball mill and is mixed by mechanical mixing respectively
Material, mixing time are 12 hours, and mixing terminates to be placed on stand-by in drier.
Mixed material is launched into steel body mold, the compression moulding on cold-compacting forming device, forming pressure is 200MPa,
Being cold-pressed the time is 5 minutes.
The grinding tool locking nub of compression moulding is put into resistance furnace and is sintered, sintering temperature is 900 DEG C, the sintered heat insulating time
It is 10 hours.
Sintered locking nub is modified using idler wheel dressing method, uses liquid after reaching geometry flatness and required precision
Body epoxy resin is bonded on aluminum-based matrix, and 150 DEG C solidify 2 hours (heating rate is 6 DEG C/min).Surface is carried out after solidification
Product can be obtained in finishing.
Embodiment 2
Prepare the small-sized grinding wheel of diameter 5.5mm: being gone out circular ring shape working lining according to size design, wherein working lining with a thickness of
2.5mm。
Pore creating material is hollow alumina ball.The grinding wheel concentration of diamond abrasive is 200% (volume fraction, grinding wheel concentration
System), wherein foam diamond quality score is 100% (i.e. all foam diamond), and the granularity of all diamonds is 5 μm.
Content of Pore-forming Agents is 15%, remaining ingredient is vitrified bond (with the total volume of diamond abrasive, pore creating material and vitrified bond
For 100% meter).
Vitrified bond ingredient are as follows: SiO247mol%, Al2O315mol%, B2O310mol%, K2O 8mol%,
Li2O 8mol%, ZrO25mol%, Bi2O37mol%.
By diamond abrasive, vitrified bond and pore creating material, weighing is placed in ball mill and is mixed by mechanical mixing respectively
Material, mixing time 24 hours, mixing terminated to be placed on stand-by in drier.
Mixed material is launched into steel body mold, the compression moulding on cold-compacting forming device, forming pressure is 40MPa,
Being cold-pressed the time is 1 minute.
The grinding tool locking nub of compression moulding is put into resistance furnace and is sintered, sintering temperature is 650 DEG C, the sintered heat insulating time
It is 2 hours.
Sintered locking nub is modified using idler wheel dressing method, uses liquid after reaching geometry flatness and required precision
Body epoxy resin is bonded on aluminum-based matrix, and 200 DEG C solidify 1.5 hours (heating rate is 5 DEG C/min).After solidification to surface into
Product can be obtained in row finishing.
Embodiment 3
It prepares diameter 250mm mill: the number of general work locking nub that works being gone out according to size design, wherein working lining thickness
For 5mm.
Pore creating material is hollow alumina ball.The grinding wheel concentration of diamond abrasive is 100% (volume fraction, grinding wheel concentration
System), wherein foam diamond quality score is 60%, and the granularity of all diamonds is 40 μm.Content of Pore-forming Agents is 25%, remaining
Ingredient is vitrified bond (being in terms of 100% by the total volume of diamond abrasive, pore creating material and vitrified bond).
Vitrified bond ingredient are as follows: SiO260mol%, Al2O310mol%, B2O38mol%, K2O 7mol%, Li2O
5mol%, ZrO24mol%, Bi2O36mol%.
By diamond abrasive, vitrified bond and pore creating material, weighing is placed in ball mill and is mixed by mechanical mixing respectively
Material, mixing time 18 hours, mixing terminated to be placed on stand-by in drier.
Mixed material is launched into steel body mold, the compression moulding on cold-compacting forming device, forming pressure is 60MPa,
Being cold-pressed the time is 3 minutes.
The grinding tool locking nub of compression moulding is put into resistance furnace and is sintered, sintering temperature is 750 DEG C, the sintered heat insulating time
It is 3 hours.
Sintered locking nub is modified using idler wheel dressing method, uses liquid after reaching geometry flatness and required precision
Body epoxy resin is bonded on aluminum-based matrix, and 250 DEG C solidify 1.5 hours (heating rate is 4 DEG C/min).After solidification to surface into
Product can be obtained in row finishing.
Embodiment 4
Other conditions and embodiment 1 are identical, only soak diamond abrasive in cellulose solution before mixing.Cellulose
Solution is cmc soln, mass fraction 15%, the preparation method comprises the following steps: by 15% carboxymethyl cellulose and 85%
12h is boiled after deionized water mixing, then natural cooling.
Grinding wheel product is prepared according to the method for embodiment 1.
Comparative example 1
Other conditions and embodiment 1 are identical, and difference is only that without using foam diamond, i.e. diamond abrasive all uses
Normal diamond (pattern is as shown in Figure 2), is prepared grinding wheel product according to the method for embodiment 1.
Grinding experiment is carried out using the grinding wheel that embodiment 1 and comparative example 1 are prepared, grinding object is silicon single crystal rod, will
Experimental result is listed in Table 1 below:
Wheel grinding experimental result prepared by 1 embodiment 1 of table and comparative example 1
According to table 1 as can be seen that the diamond intensified strong type ceramic bond super-hard abrasive tool of foam prepared by the present invention can have
Effect improves processing efficiency, reduces production cost, and the surface quality of gained workpiece is higher, is very suitable for accurate, ultraprecise and adds
Work.
Grinding experiment is carried out to grinding wheel prepared by embodiment 2~4 after the same method, experimental result shows the mill of grinding wheel
Cut high-efficient, gained workpiece surface quality is good, and various aspects are superior to conventional grinding wheel.
As can be seen from the above embodiments, the present invention provides foam diamond intensified strong type ceramic bond super-hard abrasive tool processing
High-efficient, processing quality is good；Preparation method step provided by the invention is simple, is easy to carry out standardization production, in accurate, superfinishing
It has broad application prospects in terms of close processing.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of diamond intensified strong type ceramic bond super-hard abrasive tool of foam, including tool matrix and it is bonded in the tool matrix
On working lining, which is characterized in that the working lining is prepared by diamond abrasive, vitrified bond and pore creating material；
The grinding wheel concentration of the diamond abrasive is 30~200%；The mass fraction of foam diamond in the diamond abrasive
It is 5~100%；
It is in terms of 100% by the total volume of working lining raw material, the content of the vitrified bond is 20~87.5%；The pore creating material
Content be 5~30%.
2. super-hard abrasive tool according to claim 1, which is characterized in that the granularity of the foam diamond is 5~120 μm.
3. super-hard abrasive tool according to claim 1, which is characterized in that the component of the vitrified bond includes: SiO247~
75mol%, Al2O35~15mol%, B2O35~10mol%, K2O3~8mol%, Li2O 3~8mol%, ZrO20.5~
5mol%, Bi2O33~7mol%.
4. super-hard abrasive tool according to claim 1, which is characterized in that the pore creating material is hollow alumina ball, refined naphthalene, coke
One or more of charcoal, wood powder and sodium carbonate.
5. the preparation method of super-hard abrasive tool described in Claims 1 to 4 any one, which comprises the following steps:
(1) diamond abrasive, vitrified bond and pore creating material are subjected to ball milling mixing, obtain mixture；
(2) by mixture cold moudling in a mold, several grinding tool locking nubs are obtained；
(3) it will be bonded on tool matrix after grinding tool locking nub sintering, it is super to obtain the diamond intensified strong type vitrified bond of foam
Hard grind tool.
6. preparation method according to claim 5, which is characterized in that the diamond abrasive is also wrapped before ball milling mixing
It includes: the diamond abrasive is soaked in cellulose solution.
7. preparation method according to claim 6, which is characterized in that the cellulose solution includes sodium cellulose glycolate
Solution and/or cmc soln；
The mass concentration of the cellulose solution is 1~20%.
8. preparation method according to claim 5, which is characterized in that time of ball milling mixing in the step (1) >=
12h。
9. preparation method according to claim 5, which is characterized in that the pressure of cold moudling is 40 in the step (2)
~200MPa, time are 1~5min.
10. preparation method according to claim 5, which is characterized in that the temperature being sintered in the step (3) is 650~
900 DEG C, soaking time is 2~10h.
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| CN110587498A (en) * | 2019-08-23 | 2019-12-20 | 河南富莱格超硬材料有限公司 | Method for preparing superhard small grinding head |
| CN111331528A (en) * | 2020-04-21 | 2020-06-26 | 郑州磨料磨具磨削研究所有限公司 | Centerless grinding wheel for plunge grinding of slender shaft parts and preparation method thereof |
| CN111702670A (en) * | 2020-06-30 | 2020-09-25 | 郑州高新磨料磨具有限公司 | Ultrathin ceramic diamond grinding wheel and preparation method thereof |
| CN111993297A (en) * | 2020-08-13 | 2020-11-27 | 武汉理工大学 | Preparation method of ceramic-metal composite diamond dresser |
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| CN110587498A (en) * | 2019-08-23 | 2019-12-20 | 河南富莱格超硬材料有限公司 | Method for preparing superhard small grinding head |
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| CN111702670A (en) * | 2020-06-30 | 2020-09-25 | 郑州高新磨料磨具有限公司 | Ultrathin ceramic diamond grinding wheel and preparation method thereof |
| CN111993297A (en) * | 2020-08-13 | 2020-11-27 | 武汉理工大学 | Preparation method of ceramic-metal composite diamond dresser |
| CN113997213A (en) * | 2020-10-16 | 2022-02-01 | 安泰科技股份有限公司 | Ceramic diamond grinding wheel for thinning SiC wafer and manufacturing method thereof |
| CN115339121A (en) * | 2021-05-12 | 2022-11-15 | 华侨大学 | Preparation method of flexible sol-gel polishing block |
| CN115339121B (en) * | 2021-05-12 | 2024-06-07 | 华侨大学 | Preparation method of flexible sol-gel polishing block |
| CN113211334A (en) * | 2021-05-25 | 2021-08-06 | 郑州新亚复合超硬材料有限公司 | Self-sharpening resin binder diamond grinding wheel and preparation method thereof |
| CN113910103A (en) * | 2021-11-09 | 2022-01-11 | 珠海市世创金刚石工具制造有限公司 | Superhard grinding head for processing and sintering hard material, preparation method and grinding head structure |
| CN114315307A (en) * | 2022-01-26 | 2022-04-12 | 华侨大学 | Waterproof porous magnesia grinding tool and preparation method thereof |
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