CN104440605B - A kind of superhard abrasive compound of polygonal, the method for preparing using the abrasive material grinding tool - Google Patents
A kind of superhard abrasive compound of polygonal, the method for preparing using the abrasive material grinding tool Download PDFInfo
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- CN104440605B CN104440605B CN201410631709.1A CN201410631709A CN104440605B CN 104440605 B CN104440605 B CN 104440605B CN 201410631709 A CN201410631709 A CN 201410631709A CN 104440605 B CN104440605 B CN 104440605B
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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
- B24D3/06—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 metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
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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
-
- 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
- B24D3/06—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 metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
- B24D3/08—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 metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for close-grained structure, e.g. using metal with low melting point
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/583—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on boron nitride
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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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
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- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The method that grinding tool is prepared the invention discloses a kind of superhard abrasive compound of polygonal, using the abrasive material, the superhard abrasive compound of the polygonal is that abrasive powder is packed into the polygonal groove of graphite jig, is assembled into after Synthetic block, is synthesized through HTHP.The superhard abrasive compound of polygonal of the present invention, is that abrasive powder is packed into the polygonal groove of graphite jig, is assembled into after Synthetic block, the abrasive material of the regular shape synthesized through HTHP, and hardness is high, good toughness；Size is controllable, epigranular, with excellent grinding performance；Regular shape, further increases the sharpness of abrasive material, and readily available abrasive material cutting edge is conducive to improving the grinding quality and grinding effect of grinding tool, is adapted to popularization and application in the grinding tool of uniform spatial distribution.
Description
Technical field
The invention belongs to super hard abrasive technical field, and in particular to a kind of superhard abrasive compound of polygonal, also relate to
A kind of method that grinding tool is prepared using the superhard abrasive compound of the polygonal.
Background technology
Abrasive material is can to make to be ground the material of purposes with certain degree of hardness and certain grinding capacity, usually with certain degree of hardness
With granular or powdery the mineral material of toughness.Abrasive material is divided into natural abrasive and the major class of manufactured abrasive two from the origin cause of formation, naturally
Abrasive material includes diamond, corundum, garnet, quartz etc., and manufactured abrasive includes system greatly of diamond system, carbide system, corundum system three
Row.In recent years, many natural abrasives are replaced by manufactured abrasive.Abrasive material, which is according to hardness classified, super hard abrasive and conventional abrasive material
Two major classes, wherein super hard abrasive are using diamond or cubic boron nitride as the abrasive material of main component.
Grinding tool is the instrument for being ground, grinding and polishing, and most grinding tool is made with abrasive material plus bonding agent
Bonded abrasive tool.Wherein, super hard abrasive is fixedly arranged on matrix and is made by super hard abrasive bonded abrasive tool by bonding agent, and abrasive material is in mill
Shear action is played in tool.Due to the complementarity of diamond and cubic boron nitride in terms of rapidoprint adaptation so that by their institutes
The grinding tool of composition can the range of work greatly extend, cover including various high hard, high crisp, high-strength tenacity material almost all quilts
Rapidoprint.Superhard abrasive material grinding tool has been widely used in grinding technique various aspects with its excellent grinding performance, and as super
Accurate grinding, high-efficiency grinding, difficult-to-machine material grinding, high-precision plunge grinding, grinding automation and the technology such as unmanned are entered
The basis of step.
But the abrasive material of the grinding, cutting, milling tools of metal is presently used for, shape is all irregular or relative
The equivalance shape dress of rule, sharpness is inadequate；During for being ground, cutting, polish, the cutting edge of abrasive particle is spatially distributed not on grinding tool
, cause grinding quality general, operating efficiency still has the space of lifting.
The content of the invention
It is an object of the invention to provide a kind of superhard abrasive compound of polygonal, existing abrasive material sharpness is solved not enough and in system
The problem of abrasive particle cutting edge spatially skewness after into grinding tool, influence grinding quality.
Second object of the present invention is to provide a kind of method for preparing grinding tool using the superhard abrasive compound of above-mentioned polygonal.
In order to realize the above object the technical solution adopted in the present invention is：A kind of superhard abrasive compound of polygonal, be by
Abrasive powder is packed into the polygonal groove of graphite jig, is assembled into after Synthetic block, is synthesized through HTHP.
The abrasive powder is made up of the component of following mass percent：Cubic boron nitride and/or diamond 10%~90%,
Additive 10%~90%.
The additive is corundum, carborundum, silicon nitride, aluminium nitride, titanium nitride, titanium carbide, titanium carbonitride, nitrogen calorize
It is any one in titanium, zirconium oxide, tungsten carbide, garnet, cerium oxide, cobalt, tungsten, nickel, copper, aluminium, titanium, rare earth metal and its oxide
Plant or combine.The rare earth metal is any one in yttrium, neodymium, lanthanum or combination.
The cubic boron nitride is the powder that granularity is 0.1~100 μm；The diamond is that granularity is 0.1~100 μm
Powder；The additive is the powder that granularity is 0.1~300 μm.
The notch size of the polygonal groove is not less than cell body and bottom land size.
The polygonal groove be shaped as square sheet triangle, sheet, it is sheet rhombus, triangle body, square, rectangular
Body, rhombus polyhedron or bullet.The bullet includes Polyhedral Cone, polygon pyramid, polygon ladder cone.
The polygonal groove of the graphite jig is to use engraving machine, after drawing surfacial pattern through two dimension on graphite jig,
Formed again through three dimensional sculpture.
The Synthetic block include with middle cavity pyrophillite block for transmitting pressure and the graphite jig positioned at hollow intracavitary, it is described in
The two ends of cavity are symmetrically arranged with white clouds flag, titanium sheet and conducting steel ring successively from inside to outside；The graphite jig, dolomite
Carbon paper is provided between piece, titanium sheet, conducting steel ring and pyrophillite block for transmitting pressure.
Wherein, the effect of conducting steel ring, titanium sheet and carbon paper is increase electric conductivity, makes its heating more abundant.The work of dolomite
With：Deformed under HTHP it is small, add synthesis after abrasive material stability.The effect of pyrophillite block for transmitting pressure is to be incubated and transmit pressure
Power.
The HTHP is 1200~1900 DEG C, 30,000~80,000 atmospheric pressure.
The time of the HTHP synthesis is 10~20min.
A kind of method for preparing grinding tool using the above-mentioned superhard abrasive compound of polygonal, comprises the following steps：
1) the superhard abrasive compound of polygonal is taken, in one layer of conductive metal film of abrasive surface plating, conductive mill is obtained
Material；
2) solder is coated on matrix, by conductive abrasive material monolayer alignment on the matrix for scribbling solder；
3) matrix is placed in external electric field together with abrasive material, abrasive material is polarized, using the point effect of powered abrasive material, made polygonal
Outwardly, heating solidifies solder to shape super hard abrasive tip edges, produces.
Step 1) in, metal used in conductive metal film is titanium, iron, nickel or copper；The thickness of the conductive metal film is 1~2 μ
m。
Step 1) in, using CVD (chemical vapor deposition) Vacuum Coating method plating conductive metal film.
Concrete operations are：Using metal powder, by the micro- evaporation coating of vacuum, plating temperature is 745~755 DEG C, true in stove
Reciprocal of duty cycle is 5~7Pa, and soaking time is 0.5h；In the case where keeping vacuum, less than 100 DEG C are furnace-cooled to, is come out of the stove, i.e., in mill
Expect coating surface conductive metal film.
Step 2) in, the solder is copper-based filler metal or silver-based alloy solder.
Slurry is made in use, first solder is dispersed in brazing flux, then slurry is coated on matrix working face.The brazing flux
For any one in ethanol, water or mixture.
Step 3) in, the heating-up temperature for solidifying solder is 700~900 DEG C, and hardening time is 30~120min.
A kind of abrasive material arrangement apparatus, includes the sucker of vavuum pump and funnel shaped, the small openend of the sucker and vacuum
Pump is connected by pipeline, and the big opening end of sucker, which is covered, is provided with thin porous layer.
The transition zone with loose structure is filled with the sucker of the funnel shaped, the transition zone is used to pass the gas through
And prevent abrasive material from sucking vavuum pump.
The transition zone can also be filled in the small openend of sucker and the junction of pipeline.
The thin porous layer is porous plate or silk screen.The size in hole is the 1/2~3/ of the isometrical size of abrasive material on thin porous layer
4。
The thin porous layer detachably with replacing.
The superhard abrasive compound of polygonal of the present invention, is that abrasive powder is packed into the polygonal groove of graphite jig, assembling
Into after Synthetic block, the abrasive material of the regular shape synthesized through HTHP, hardness is high, good toughness；Size is controllable, and granularity is equal
It is even, with excellent grinding performance；Regular shape, further increases the sharpness of abrasive material, readily available abrasive material cutting edge is in sky
Between the grinding tool that is evenly distributed, be conducive to improving the grinding quality and grinding effect of grinding tool, be adapted to popularization and application.
The method that the superhard abrasive compound of use polygonal of the present invention prepares grinding tool, is carried out at metallization to abrasive material first
Reason, can be conductive, then make abrasive material individual layer on the matrix working face for scribble solder regularly arranged, using abrasive material when powered
Point effect, obtains the grinding tool of abrasive material tip edges outwardly；On the working face of gained grinding tool, the arrangement of abrasive material individual layer and arrangement mode
It is controllable；The cutting edge of abrasive material is spatially evenly distributed, and improves the grinding quality and grinding efficiency of grinding tool；The preparation side of the grinding tool
Method technique is simple, easy to operate, is adapted to large-scale industrial production.
The abrasive material arrangement apparatus of the present invention, includes the sucker of vavuum pump and funnel shaped, the small openend of the sucker with
Vavuum pump is connected by pipeline, and the big opening end of sucker, which is covered, is provided with thin porous layer, the attraction produced when being evacuated using vavuum pump
Power, makes the abrasive material of the big opening end absorption monolayer arrangement of sucker, and sucker sticking lives to be located at the abrasive material in thin porous layer hole；Subsequent handle
Sucker is moved to above matrix, and abrasive material is placed on the matrix working face of coated solder, is closed vavuum pump and is removed suction, i.e.,
By in abrasive material arrangement to matrix, individual layer, the rule automatic placement of abrasive material are realized；Hole is big on the thin porous layer at sucker big opening end
The arrangement that small spacing arrangement can need according to production is designed, also can be by changing the sucker or sucker arranged with different holes
Arrangement pattern of the upper thin porous layer control abrasive material on matrix, makes arrangement of the abrasive material on matrix working face realize individual layer, rule
It is controllable；The appliance arrangement is simple, and easy to use, cost is low, is adapted to popularization and application.
Further, filling transition zone in sucker, transition zone ventilation but obstructed abrasive material, prevent small abrasive material suction vavuum pump；
It is the 1/2~3/4 of the isometrical size of abrasive material as the mesh size of the woven wire of thin porous layer, it is ensured that the jail that sucker is inhaled to abrasive material
And do not suck in vavuum pump；The thin porous layer is porous plate or silk screen, between size, arrangement and hole that hole can be designed as needed
Away from size, it is convenient to change.
Brief description of the drawings
Fig. 1 is the structural representation of the abrasive material arrangement apparatus of embodiment 1；
Fig. 2 is the sectional view of sucker in Fig. 1；
Fig. 3 is the structural representation at the big opening end of sucker in Fig. 1；
Fig. 4 is the pictorial diagram of the abrasive material arrangement apparatus of embodiment 1；
Fig. 5 is the pictorial diagram of sucker in Fig. 4；
Fig. 6 is the pictorial diagram of graphite jig used in embodiment 2；
Fig. 7 is the structural representation of the Synthetic block assembled in embodiment 2；
Fig. 8 is the pictorial diagram of the gained triangle bodily form abrasive material of embodiment 2；
Fig. 9 is the enlarged drawing of the gained triangle bodily form abrasive material of embodiment 2；
Figure 10 is the pictorial diagram of the gained bullet abrasive material of embodiment 5；
Figure 11 is the enlarged drawing of the gained bullet abrasive material of embodiment 5；
Figure 12 is the side view of bullet abrasive material in Figure 11；
Figure 13 is the structural representation of polygonal abrasive material.
Embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment 1
The abrasive material arrangement apparatus of the present embodiment, as shown in Figure 1,2 and 3, includes the sucker 2 of vavuum pump 1 and funnel shaped, institute
The small opening 5 for stating sucker 2 is connected with vavuum pump 1 by pipeline 3, and the big opening end 4 of sucker 2, which is covered, is provided with thin porous layer 6, described
Thin porous layer 6 is woven wire；The transition zone 7 with loose structure, the transition zone are filled with the sucker 2 of the funnel shaped
7 are used to pass the gas through and prevent abrasive material from sucking vavuum pump 1；The transition zone is sponge.
The pictorial diagram of the abrasive material arrangement apparatus of the present embodiment is as shown in Figure 4,5.Funnelform sucker is such as gondola water faucet structure, greatly
Aperture of the thin porous layer of openend with arrangement rule.In use, the attraction produced when being evacuated using vavuum pump, sucker is inhaled
The abrasive material in woven wire mesh is handled, makes the abrasive material of the big opening end absorption monolayer rule arrangement of sucker；Then sucker is moved
Move above matrix, abrasive material is placed on the matrix working face of coated solder, close vavuum pump and remove suction, abrasive material is arranged
Cloth realizes individual layer, the rule automatic placement of abrasive material on matrix；Filling transition zone in sucker, transition zone ventilation but obstructed abrasive material,
Prevent small abrasive material suction vavuum pump；It is the 1/2 of the isometrical size of abrasive material as the mesh size of the woven wire of thin porous layer, it is ensured that
The jail that sucker is inhaled to abrasive material, and abrasive material is not drawn into vavuum pump.
The arrangement that the size spacing arrangement in hole can need according to production on the thin porous layer at sucker big opening end is designed,
Also arrangement pattern of the abrasive material on matrix can be controlled by changing thin porous layer on the sucker arranged with different holes or sucker.
Embodiment 2
The superhard abrasive compound of polygonal of the present embodiment, is that abrasive powder is packed into the polygonal groove of graphite jig, group
Dress up after Synthetic block, be placed in cubic apparatus, the triangle bodily form mill made from synthesis 10min under the conditions of 50,000 atmospheric pressure, 1500 DEG C
Material.
Wherein, the abrasive powder includes the component of following mass percent：Particle diameter is 0.5~1 μm of cubic boron nitride
30%th, particle diameter is 10~30 μm of corundum 50%, particle diameter is 10~30 μm aluminium nitride 10%, the aluminium powder that particle diameter is 1~2 μm
10%.After said components are well mixed, the abrasive powder is produced.
Graphite jig used is as shown in fig. 6, its polygonal groove is the triangle bodily form.The polygonal groove of the graphite jig is to adopt
With engraving machine (Zhengzhou Kechuang numerical control KC-6090 engraving machines, precision reaches 0.001mm), surface is drawn through two dimension on graphite jig
After figure, software is carried by engraving machine and carries out three dimensional sculpture formation.Carving parameter is：Graver：3.175*30*0.2 it is flat
Vertex (vertices) knife hard alloy material；Carve rotating speed：24000r/m, carves mode：Three-dimensional clear angle；Carving depth 1mm, the triangle length of side
For 1.2mm.
After graphite jig is carved, abrasive powder is packed into polygonal groove；During filling, by placing excessive on mould
Abrasive powder, after being tamped by using smooth plate pressing, unnecessary abrasive powder is struck off with blade, the graphite without being engraved into is exposed
Out to improve electric conductivity.
The Synthetic block is as shown in fig. 7, comprises the pyrophillite block for transmitting pressure 8 with middle cavity and the graphite positioned at hollow intracavitary
Mould 9, the two ends of the middle cavity are symmetrically arranged with white clouds flag 10, titanium sheet 11 and conducting steel ring 12 successively from inside to outside；Institute
State and carbon paper 13 is provided between graphite jig 9, white clouds flag 10, titanium sheet 11, conducting steel ring 12 and pyrophillite block for transmitting pressure 8.Assembling is closed
When blocking, putting for last graphite jig is determined according to the height of pyrophillite and two ends conducting steel ring, titanium sheet, the height of white clouds flag
Between being empty, graphite jig can lamination place, according to the thickness of graphite jig determine filled lamination the number of plies, fill up rear pyrophillite
Highly slightly below or fair intermediate module height, in order to transmit pressure.
After being synthesized through HTHP, the abrasive material in the polygonal groove of graphite jig shrinks, it is easy to from graphite jig
In pour out, after contraction the abrasive particle length of side be 0.7mm.
Triangle bodily form abrasive material obtained by the present embodiment is as shown in Figure 8,9.
Embodiment 3
The superhard abrasive compound of polygonal of the present embodiment, is that abrasive powder is packed into the polygonal groove of graphite jig, group
Dress up after Synthetic block, be placed in cubic apparatus, the cuboid mill made from synthesis 15min under the conditions of 30,000 atmospheric pressure, 1900 DEG C
Material.
Wherein, the abrasive powder includes the component of following mass percent：Particle diameter for 1~5 μm cubic boron nitride 55%,
Particle diameter is 10~20 μm of corundum 25%, particle diameter is 10~20 μm titanium nitride 10%, the cobalt powder 10% that particle diameter is 1~2 μm.Will
After said components are well mixed, the abrasive powder is produced.
The polygonal groove of graphite jig used is cuboid.The engraving process be the same as Example 1 of graphite jig, wherein carving
Depth 1mm, long and width is 1.2mm.
The assembling mode be the same as Example 1 of abrasive powder fill method and Synthetic block.
After being synthesized through HTHP, the abrasive material in the polygonal groove of graphite jig shrinks, it is easy to from graphite jig
In pour out, long after contraction and width is 0.7mm.
Embodiment 4
The superhard abrasive compound of polygonal of the present embodiment, is that abrasive powder is packed into the polygonal groove of graphite jig, group
Dress up after Synthetic block, be placed in cubic apparatus, the sheet rhombus mill made from synthesis 20min under the conditions of 80,000 atmospheric pressure, 1200 DEG C
Material.
Wherein, the abrasive powder includes the component of following mass percent：Diamond 30%, particle diameter of the particle diameter for 1~5 μm
It is 1 for 10~20 μm of corundum 25%, the titanium nitride 35% that particle diameter is 10~20 μm, the cobalt powder 5% that particle diameter is 1~2 μm, particle diameter
~2 μm of aluminium powder 5%.After said components are well mixed, the abrasive powder is produced.
The polygonal groove of graphite jig used is sheet rhombus.The engraving process be the same as Example 1 of graphite jig, wherein carving
Depth 0.6mm, the length of side is 1.2mm.
The assembling mode be the same as Example 1 of abrasive powder fill method and Synthetic block.
After being synthesized through HTHP, the abrasive material in the polygonal groove of graphite jig shrinks, it is easy to from graphite jig
In pour out, shrink a length of 0.7mm in back.
Embodiment 5
The superhard abrasive compound of polygonal of the present embodiment, is that abrasive powder is packed into the polygonal groove of graphite jig, group
Dress up after Synthetic block, be placed in cubic apparatus, the bullet mill made from synthesis 15min under the conditions of 60,000 atmospheric pressure, 1650 DEG C
Material.
Wherein, the abrasive powder includes the component of following mass percent：Particle diameter for 0.5~10 μm diamond 10%,
Particle diameter is 0.5~10 μm of cubic boron nitride 30%, particle diameter is 20~30 μm titanium nitride 35%, the nitrogen that particle diameter is 20~30 μm
Titanium aluminide 20%, particle diameter are 1~2 μm of copper powder 5%.After said components are well mixed, the abrasive powder is produced.
The polygonal groove of graphite jig used is bullet.The engraving process be the same as Example 1 of graphite jig, wherein engraving is deep
Spend 1mm, a diameter of 1.2mm of notch.
The assembling mode be the same as Example 1 of abrasive powder fill method and Synthetic block.
After being synthesized through HTHP, the abrasive material in the polygonal groove of graphite jig shrinks, it is easy to from graphite jig
In pour out, shrink the conical surface a diameter of 0.7mm.
Bullet abrasive material is as shown in Figure 10, Figure 11, Figure 12 obtained by the present embodiment.
In addition, in other embodiments, as shown in figure 13, the superhard abrasive compound of polygonal of the invention may also be fabricated which prismatic
Polyhedron, polyhedron cone, polygon pyramid or polygon ladder cone etc..
Embodiment 6
The present embodiment uses the method that the superhard abrasive compound of gained polygonal of embodiment 2 prepares grinding tool, comprises the following steps：
1) titanium valve of the superhard abrasive compound of gained polygonal of Example 2 and 300 mesh, by the micro- evaporation coating of vacuum,
Abrasive surface plating a layer thickness is 1 μm of conductive titanium film, and plating temperature is 750 DEG C, and vacuum is 5Pa, soaking time in stove
For 0.5h；In the case where keeping vacuum, less than 100 DEG C are furnace-cooled to, the abrasive material for coming out of the stove conductive；
2) solder is coated on the working face of matrix, there is conduction using the abrasive material arrangement apparatus absorption monolayer of embodiment 1
The abrasive material of property, by abrasive material regular array on the matrix working face for scribbling solder；
3) matrix is placed in external electric field together with abrasive material, abrasive material is polarized, using the point effect of powered abrasive material, made polygonal
Shape super hard abrasive tip edges outwardly, after be placed in vacuum drying oven be heated to 700 DEG C carry out and be incubated 120min carry out vacuum-sintering
Solidify solder, produce.
Embodiment 7
The present embodiment uses the method that the superhard abrasive compound of gained polygonal of embodiment 3 prepares grinding tool, comprises the following steps：
1) copper powder of the superhard abrasive compound of gained polygonal of Example 3 and 300 mesh, by the micro- evaporation coating of vacuum,
Abrasive surface plating a layer thickness is 2 μm of conductive copper films, and plating temperature is 755 DEG C, and vacuum is 6Pa, soaking time in stove
For 0.5h；In the case where keeping vacuum, less than 100 DEG C are furnace-cooled to, the abrasive material for coming out of the stove conductive；
2) solder is coated on the working face of matrix, there is conduction using the abrasive material arrangement apparatus absorption monolayer of embodiment 1
The abrasive material of property, by abrasive material regular array on the matrix working face for scribbling solder；
3) matrix is placed in external electric field together with abrasive material, abrasive material is polarized, using the point effect of powered abrasive material, made polygonal
Shape super hard abrasive tip edges outwardly, after be placed in vacuum drying oven be heated to 750 DEG C carry out and be incubated 100min carry out vacuum-sintering
Solidify solder, produce.
Embodiment 8
The present embodiment uses the method that the superhard abrasive compound of gained polygonal of embodiment 4 prepares grinding tool, comprises the following steps：
1) iron powder of the superhard abrasive compound of gained polygonal of Example 4 and 300 mesh, by the micro- evaporation coating of vacuum,
Abrasive surface plating a layer thickness is 1 μm of conductive iron film, and plating temperature is 745 DEG C, and vacuum is 7Pa, soaking time in stove
For 0.5h；In the case where keeping vacuum, less than 100 DEG C are furnace-cooled to, the abrasive material for coming out of the stove conductive；
2) solder is coated on the working face of matrix, there is conduction using the abrasive material arrangement apparatus absorption monolayer of embodiment 1
The abrasive material of property, by abrasive material regular array on the matrix working face for scribbling solder；
3) matrix is placed in external electric field together with abrasive material, abrasive material is polarized, using the point effect of powered abrasive material, made polygonal
Shape super hard abrasive tip edges outwardly, after be placed in vacuum drying oven be heated to 900 DEG C carry out and be incubated 40min carry out vacuum-sintering make
Solder solidifies, and produces.
Embodiment 9
The present embodiment uses the method that the superhard abrasive compound of gained polygonal of embodiment 5 prepares grinding tool, comprises the following steps：
1) nickel powder of the superhard abrasive compound of gained polygonal of Example 5 and 300 mesh, by the micro- evaporation coating of vacuum,
Abrasive surface plating a layer thickness is 2 μm of conductive nickel film, and plating temperature is 750 DEG C, and vacuum is 5Pa, soaking time in stove
For 0.5h；In the case where keeping vacuum, less than 100 DEG C are furnace-cooled to, the abrasive material for coming out of the stove conductive；
2) solder is coated on the working face of matrix, there is conduction using the abrasive material arrangement apparatus absorption monolayer of embodiment 1
The abrasive material of property, by abrasive material regular array on the matrix working face for scribbling solder；
3) matrix is placed in external electric field together with abrasive material, abrasive material is polarized, using the point effect of powered abrasive material, made polygonal
Shape super hard abrasive tip edges outwardly, after be placed in vacuum drying oven be heated to 80 DEG C carry out and be incubated 80min carry out vacuum-sintering make
Solder solidifies, and produces.
Experimental example 1
This experimental example detects to the performance of polygonal abrasive material obtained by embodiment 2-5, as a result as shown in table 1.
The isostatic pressing strength testing result of polygonal abrasive material obtained by the embodiment 2-5 of table 1
| Object | Isostatic pressing strength (N) |
| Embodiment 2 | 243.1 |
| Embodiment 3 | 260 |
| Embodiment 4 | 300 |
| Embodiment 5 | 265 |
Experimental example 2
This experimental example is detected to the grinding performance of grinding tool obtained by embodiment 6-9.Detection method is that implementation is respectively adopted
Grinding tool obtained by example 6-9, processes No. 45 steel plates, its grinding efficiency is detected respectively.
Wherein, the grinding that comparative example is prepared for monocrystalline CBN in the prior art.
As a result it is as shown in table 2.
The grinding efficiency testing result of grinding tool obtained by the embodiment 6-9 of table 2
| Object | Grinding efficiency, g/min |
| Embodiment 6 | 13.6 |
| Embodiment 7 | 13.8 |
| Embodiment 8 | 14.3 |
| Embodiment 9 | 13.8 |
| Comparative example | 9.8 |
Claims (7)
1. a kind of method that superhard abrasive compound of use polygonal prepares grinding tool, it is characterised in that：Comprise the following steps：
1）The superhard abrasive compound of polygonal is taken, in one layer of conductive metal film of abrasive surface plating, conductive abrasive material is obtained；
2）Solder is coated on matrix, by conductive abrasive material monolayer alignment on the matrix for scribbling solder；
3）Matrix is placed in external electric field together with abrasive material, abrasive material is polarized, using the point effect of powered abrasive material, surpasses polygonal
Outwardly, heating solidifies solder to hard grind material tip edges, produces.
2. according to the method described in claim 1, it is characterised in that：The superhard abrasive compound of polygonal is to fill abrasive powder
Enter in the polygonal groove of graphite jig, be assembled into after Synthetic block, synthesized through HTHP；
Abrasive powder is made up of the component of following mass percent：Cubic boron nitride and/or diamond 10%~90%, additive 10%
~90%；Additive is corundum, carborundum, silicon nitride, aluminium nitride, titanium nitride, titanium carbide, titanium carbonitride, nitrogen titanium aluminide, oxidation
Any one in zirconium, tungsten carbide, garnet, cerium oxide, cobalt, tungsten, nickel, copper, aluminium, titanium, rare earth metal and its oxide or group
Close；Polygonal groove is shaped as square sheet triangle, sheet, sheet rhombus, triangle body, square, cuboid, rhombus multiaspect
Body or bullet；HTHP is 1200~1900 DEG C, 30,000~80,000 atmospheric pressure.
3. method according to claim 2, it is characterised in that：The polygonal groove of the graphite jig is to use engraving machine,
After surfacial pattern being drawn on graphite jig through two dimension, then formed through three dimensional sculpture.
4. method according to claim 2, it is characterised in that：The Synthetic block includes the pyrophillite pressure transmission with middle cavity
Block and the graphite jig positioned at hollow intracavitary, the two ends of the middle cavity are symmetrically arranged with white clouds flag, titanium successively from inside to outside
Piece and conducting steel ring；Carbon paper is provided between the graphite jig, white clouds flag, titanium sheet, conducting steel ring and pyrophillite block for transmitting pressure.
5. according to the method described in claim 1, it is characterised in that：Step 1）In, metal used in the conductive metal film be titanium,
Iron, nickel or copper；The thickness of the conductive metal film is 1~2 μm.
6. method according to claim 5, it is characterised in that：Step 2）In, the solder is copper-based filler metal or silver
Based alloy solder.
7. according to the method described in claim 1, it is characterised in that：Step 3）In, make the heating-up temperature that solder solidifies for 700~
900 DEG C, hardening time is 30~120min.
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| CN110465669B (en) * | 2019-09-09 | 2020-06-26 | 山东大学 | Gradient composite cubic boron nitride material and preparation process and application thereof |
| CN110936303A (en) * | 2019-12-26 | 2020-03-31 | 华侨大学 | Electroplating-brazing composite preparation method of fine-grained superhard abrasive tool |
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