CN109822467A - A kind of CBN resinoid bonded grinding tool and preparation method thereof - Google Patents
A kind of CBN resinoid bonded grinding tool and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of CBN resinoid bonded grinding tools and preparation method thereof, belong to grinding materials and grinding tool technical field.CBN resinoid bonded grinding tool of the invention, is made of the raw material of following mass percent: thermosetting resin 10~20%, cubic boron nitride 10~25%, metal powder 20~40%, silicon carbide 5~15%, calcium sulfate 3~10%, solid lubricant 5~10%.CBN resinoid bonded grinding tool of the invention, using thermosetting resin cure stage high fluidity to the uniformly good infiltration of the materials such as metal powder, silicon carbide and calcium sulfate, improve bond strength；And greatly strengthen that CBN resinoid bonded grinding tool intensity, thermal diffusivity be good, grinding efficiency, self-sharpening by the compounding of addition calcium sulfate, metal powder, silicon carbide and solid lubricant, and improve grinding tool structural homogenity.
Description
Technical field
The present invention relates to a kind of CBN resinoid bonded grinding tools and preparation method thereof, belong to grinding materials and grinding tool technical field.
Background technique
Resin wheel is divided into ordinary resin grinding wheel and superhard resin sand as one kind important in grinding wheel, by the difference of abrasive material
Wheel, it is the grinding wheel being mainly ground to point, superhard sand that ordinary resin grinding wheel, which is with conventional abrasive materials such as white fused alumina, Brown Alundum, silicon carbide,
It is the grinding wheel being mainly ground to point that wheel, which is with diamond or CBN,.Wherein, resin CBN grinding wheel is with its stronger wearability, crushing resistance
And higher hardness and good self-sharpening, it is widely used in corase grinding, snagging, cutting and is freely ground, such as grind steel ingot, casting is beaten
Burr etc..
In the prior art, a kind of superhard CBN is disclosed in the Chinese invention patent that Authorization Notice No. is CN103639908B
Grinding tool, which includes grinding wheel abrasive material；Grinding wheel abrasive material is prepared from the following raw materials in parts by weight: resin
50~55 parts, 5~10 parts of copper powder, 5~8 parts of solid lubricant, 10~15 parts of crystal whisker of hexa potassium titanate, 25~30 parts of CBN abrasive material；Institute
Solid lubricant is stated to be made of molybdenum disulfide and graphite.The CBN grinding wheel have long service life, abrasion less, dimensionally stable etc. it is excellent
Point, but due in grinding wheel abrasive material resin content it is more, powdered granule is very little, and the self-sharpening for easily leading to grinding tool is poor, and then causes
The linksystems problems such as grinding efficiency is low, poor radiation, workpiece surface quality and accuracy of form and position difference.
Summary of the invention
The object of the present invention is to provide a kind of CBN resinoid bonded grinding tools, are able to solve CBN resin-bonded in the prior art
Agent grinding tool grinding efficiency is low, is ground the problem of the object accuracy of form and position and surface quality difference.
The present invention also provides a kind of preparation methods of above-mentioned CBN resinoid bonded grinding tool.
In order to achieve the goal above, technical solution used by CBN resinoid bonded grinding tool of the invention is:
A kind of CBN resinoid bonded grinding tool, is made of the raw material of following mass percent: thermosetting resin 10~20%,
Cubic boron nitride 10~25%, metal powder 20~40%, silicon carbide 5~15%, calcium sulfate 3~10%, solid lubricant 5~
10%.
CBN resinoid bonded grinding tool of the invention, using thermosetting resin as bonding agent, with cubic boron nitride for main abrasive grain,
Metal powder, silicon carbide, calcium sulfate and solid lubricant are added simultaneously, since thermosetting resin has high flowing in cure stage
Property, can uniform powder body materials such as good infiltration metal powder, silicon carbide and calcium sulfate；The addition of solid lubricant can then promote mill
The heat-sinking capability of tool.So that CBN resinoid bonded grinding tool has, excellent in cushion effect, thermal diffusivity is good, grinding efficiency is high, certainly
The advantages that sharp property is good and whole excellent in uniform.
Preferably, the metal powder is at least one of iron powder, nickel powder, copper powder, silver powder, zinc powder.Metal powder can increase
The heat conduction and heat radiation of strong CBN resinoid bonded grinding tool, moreover it is possible to act synergistically with calcium sulfate, enhance grinding tool institutional framework intensity and
Wearability.
Preferably, the thermosetting resin is high fluidity thermosetting resin.Specification, which is made, in thermosetting resin isCylindric resin test specimens block, then sectional area >=0.3cm at 175 DEG C of melting and solidifications, maximum gauge2,
Then the thermosetting resin is high fluidity thermosetting resin of the invention.Thermosetting property tree can reduced using high fluidity resin
While rouge dosage, the uniformity of grinding tissue is improved, and improves the fastness of the bonding of abrasive grain, extend grinding tool uses the longevity
Life.
In order to promote the thermal diffusivity and self-sharpening of grinding tool, it is preferred that the solid lubricant is graphite, molybdenum disulfide, nitrogen
Change at least one of boron, silicon nitride.
In order to meet the requirement of grinding sharpness and grinding efficiency, it is preferred that the average grain diameter of the cubic boron nitride is
90~125 μm.
Preferably, the calcium sulfate is calcium sulfate crystal whiskers.Calcium sulfate crystal whiskers can enhance the thermally conductive of extra hard material grinding wheel and dissipate
It is hot, and keep the combination of each substance in raw material stronger, enhance the service life of CBN resinoid bonded grinding tool；In addition, sulphur
Sour calcium pyroborate can then enhance the intensity of grinding tool, and in view of its brittleness, can promote the self-sharpening of grinding tool.
In order to further increase the self-sharpening of grinding tool, it is preferred that the draw ratio of the calcium sulfate crystal whiskers is 4~8:1.
It is further preferred that the average diameter of the calcium sulfate crystal whiskers is 4~15 μm.
It is adversely affected to reduce the ground effect of efficient, the high sharpness of calcium sulfate crystal whiskers cubic boron nitride,
The average length of the calcium sulfate crystal whiskers is the 1/3~1/2 of the average grain diameter of the cubic boron nitride.It is further preferred that institute
The average length for stating calcium sulfate crystal whiskers is 30~60 μm.
In order to reach good heat dissipation effect, and it is unlikely to be substantially reduced the intensity of abrasive material, the solid lubricant
Average grain diameter should be greater than the average grain diameter of metal powder.Preferably, the average grain diameter of the solid lubricant is 25~38 μm.
In order to make metal powder while enhancing grinding tool thermal diffusivity, intensity and wearability, there is grinding tool good from sharp
Property, the average grain diameter of the metal powder is not more than the 1/2 of the length of the calcium sulfate crystal whiskers.It is further preferred that the metal
The average grain diameter of powder is 15~25 μm.Still more preferably, the average grain diameter of the metal powder is 15~23 μm.
Silicon carbide can increase the impact strength of grinding tool system itself, promote self-sharpening of the grinding tool in grinding process,
And assistant grinding can be played the role of.Preferably, the average grain diameter of the silicon carbide is 10~40 μm.
Technical solution used by the preparation method of CBN resinoid bonded grinding tool of the invention are as follows:
A kind of preparation method of above-mentioned CBN resinoid bonded grinding tool, comprising the following steps: each original by formula ratio is provided
Expect the mixture of composition；By the mixture compression moulding, solidification to get.
The preparation method of CBN resinoid bonded grinding tool of the invention, by mixture compression moulding, solidification either cold pressing
Resolidification afterwards is also possible to solidification while hot pressing；The preparation method of CBN resinoid bonded grinding tool of the invention, technique letter
It is single, it is easy to promote and utilize.
In order to improve the heat dissipation of CBN resinoid bonded grinding tool, hold the ability of bits and chip removal, meet grinding tool heavy load, great Yu
Measure the needs of grinding, it is preferred that the compression moulding suppresses shrinkage pool in the grinding surface of the CBN resinoid bonded grinding tool.
Shrinkage pool as stomata is suppressed in grinding surface using drawing method, so that the size of stomata, shape and distribution mode are controllable, just
The surface quality of workpiece after improving grinding.
For the ease of the processing to grinding surface upper concave hole, it is preferred that the shrinkage pool is hemispherical or semielliptical shape.More into one
Step is preferred, and the shrinkage pool is semielliptical shape.The shrinkage pool of semielliptical shape can ensure in the case where different abrasive material layer depths, respectively
Stomata keeps smaller difference as much as possible, so that the grinding performance of extra hard material grinding wheel be made to keep steady substantially in grinding process
It is fixed.The shrinkage pool of semielliptical shape is parallel to the cross section of grinding surface as circle, and the maximum circular diameter of cross-sectional area is 2~
5mm.The innermost depth of semielliptical shape shrinkage pool is 4~10mm.
In order to further increase the surface quality of the workpiece after grinding, it is preferred that the shrinkage pool is uniformly suppressed
In in the grinding surface.
Preferably, the metal powder is at least one of iron powder, nickel powder, copper powder, silver powder, zinc powder.It is further preferred that
The metal powder is iron powder.
The thermosetting resin is high fluidity thermosetting resin.Specification, which is made, in thermosetting resin isCircle
Column resin test specimens block, then in 175 DEG C of melting and solidifications, if sectional area >=0.3cm at maximum gauge2, then the thermosetting property
Resin is high fluidity thermosetting resin of the invention.The uniformity and mill of grinding tissue can not only be improved using high stir-in resin
The fastness of grain bonding, moreover it is possible to during suppressing shrinkage pool in grinding surface, pass through being total to for thermosetting resin and solid lubricant
Same-action reduces aggregation of the raw material around shrinkage pool, further increases the uniformity of grinding tissue.It is further preferred that described
Thermosetting resin is phenol-formaldehyde resin modified.
Preferably, the average grain diameter of the cubic boron nitride is 90~125 μm.
Preferably, the calcium sulfate is calcium sulfate crystal whiskers.The draw ratio of the calcium sulfate crystal whiskers is 4~8:1.
It is further preferred that the average diameter of the calcium sulfate crystal whiskers is 4~8 μm.
It is further preferred that the average length of the calcium sulfate crystal whiskers is the 1/3 of the average grain diameter of the cubic boron nitride
~1/2.Still more preferably, the average length of the calcium sulfate crystal whiskers is 30~60 μm.
The solid lubricant is at least one of graphite, molybdenum disulfide, boron nitride, silicon nitride.
Preferably, the average grain diameter of the solid lubricant should be greater than the average grain diameter of metal powder.It is further preferred that
The average grain diameter of the solid lubricant is 25~38 μm.
Preferably, the average grain diameter of the silicon carbide is 10~40 μm.
Preferably, the average grain diameter of the metal powder is not more than the 1/2 of the length of the calcium sulfate crystal whiskers.Further preferably
, the average grain diameter of the metal powder is 15~25 μm.Still more preferably, the average grain diameter of the metal powder is 15~23
μm。
Detailed description of the invention
Fig. 1 is the schematic diagram of the top board used in Example 1 of the preparation method of CBN resinoid bonded grinding tool；
Fig. 2 is the local pictures of the top board used in Example 1 of the preparation method of CBN resinoid bonded grinding tool；
Wherein, the protrusion of 1- elliposoidal.
Specific embodiment
Below in conjunction with specific embodiment, further description of the technical solution of the present invention.
The model that the thermosetting resin used in specific embodiment produces for Shengquan Group Co. Ltd., Jinan
The product of PF2893, which, which is made specification, isCylindric resin test specimens block, then 175
DEG C melting and solidification, sectional area >=0.3cm at maximum gauge2。
The embodiment 1 of CBN resinoid bonded grinding tool
The CBN resinoid bonded grinding tool of the present embodiment is mill, is made of the raw material of following mass percent: thermosetting property tree
Rouge 10%, cubic boron nitride 25%, metal powder 40%, green silicon carbide 5%, calcium sulfate crystal whiskers 10%, solid lubricant 10%；It is vertical
The average grain diameter of square boron nitride is 90 μm, and metal powder is the iron powder that average grain diameter is 15 μm, and the average grain diameter of green silicon carbide is 10 μ
M, the average length of calcium sulfate crystal whiskers are 30 μm, and the average diameter of calcium sulfate crystal whiskers is 4 μm, and solid lubricant is that average grain diameter is
25 μm of graphite powder.
The embodiment 2 of CBN resinoid bonded grinding tool
The CBN resinoid bonded grinding tool of the present embodiment is mill, is made of the raw material of following mass percent: thermosetting property tree
Rouge 20%, cubic boron nitride 10%, metal powder 37%, green silicon carbide 15%, calcium sulfate crystal whiskers 3%, solid lubricant 5%；It is vertical
The average grain diameter of square boron nitride is 90 μm, the iron powder that metal powder is 20 μm of average grain diameter, and the average grain diameter of green silicon carbide is 40 μm,
The average length of calcium sulfate crystal whiskers is 46 μm, and the average diameter of calcium sulfate crystal whiskers is 6 μm, and solid lubricant is that average grain diameter is 38
μm graphite powder.
The embodiment 3 of CBN resinoid bonded grinding tool
The CBN resinoid bonded grinding tool of the present embodiment is mill, is made of the raw material of following mass percent: thermosetting property tree
Rouge 20%, cubic boron nitride 25%, metal powder 20%, green silicon carbide 15%, calcium sulfate crystal whiskers 10%, solid lubricant 10%；
The average grain diameter of cubic boron nitride is 125 μm, and metal powder is the iron powder that average grain diameter is 23 μm, and the average grain diameter of green silicon carbide is
25 μm, the average length of calcium sulfate crystal whiskers is 60 μm, and the average diameter of calcium sulfate crystal whiskers is 15 μm, and solid lubricant is average grain
The graphite powder that diameter is 38 μm.
The embodiment 4 of CBN resinoid bonded grinding tool
The CBN resinoid bonded grinding tool of the present embodiment is mill, is made of the raw material of following mass percent: thermosetting property tree
Rouge 10%, cubic boron nitride 25%, metal powder 40%, green silicon carbide 5%, calcium sulfate crystal whiskers 10%, solid lubricant 10%；It is vertical
The average grain diameter of square boron nitride is 125 μm, and metal powder is the iron powder that average grain diameter is 17 μm, and the average grain diameter of green silicon carbide is 25
μm, the average length of calcium sulfate crystal whiskers is 60 μm, and the average diameter of calcium sulfate crystal whiskers is 9 μm, and solid lubricant is average grain diameter
For 30 μm of molybdenum disulfide.
The embodiment 5 of CBN resinoid bonded grinding tool
The CBN resinoid bonded grinding tool of the present embodiment is mill, is made of the raw material of following mass percent: thermosetting property tree
Rouge 20%, cubic boron nitride 10%, metal powder 37%, green silicon carbide 15%, calcium sulfate crystal whiskers 3%, solid lubricant 5%；It is vertical
The average grain diameter of square boron nitride is 107 μm, and metal powder is the iron powder that average grain diameter is 23 μm, and the average grain diameter of green silicon carbide is 35
μm, the average length of calcium sulfate crystal whiskers is 40 μm, and the average diameter of calcium sulfate crystal whiskers is 10 μm, and solid lubricant is average grain diameter
For 25 μm of molybdenum disulfide.
The embodiment 6 of CBN resinoid bonded grinding tool
The CBN resinoid bonded grinding tool of the present embodiment is mill, is made of the raw material of following mass percent: thermosetting property tree
Rouge 20%, cubic boron nitride 25%, metal powder 20%, green silicon carbide 15%, calcium sulfate crystal whiskers 10%, solid lubricant 10%；
The average grain diameter of cubic boron nitride is 107 μm, and metal powder is the iron powder that average grain diameter is 20 μm, and the average grain diameter of green silicon carbide is
34 μm, the average length of calcium sulfate crystal whiskers is 55 μm, and the average diameter of calcium sulfate crystal whiskers is 11 μm, and solid lubricant is average grain
The molybdenum disulfide that diameter is 29 μm.
The comparative example 1 of CBN resinoid bonded grinding tool
The CBN resinoid bonded grinding tool of this comparative example be mill, by melamine modified phenolic resin, cubic boron nitride and
By cubic boron nitride and white fused alumina and cyanurotriamide modified phenolic aldehyde tree is added in the ratio that white fused alumina is 1:2:1.3 according to mass ratio
Mixed in rouge, it is hot-forming to get；The average grain diameter of used cubic boron nitride is 107 μm, and the average grain diameter of white fused alumina is
40μm。
The comparative example 2 of CBN resinoid bonded grinding tool
The CBN resinoid bonded grinding tool of this comparative example is the macro pore resin binding agent sand wheel manufactured experimently by casting method, packet
Include following steps:
1) choose 25 parts of resin binder, 30 parts of abrasive material, 0.7 part of foaming agent, 23 parts of diluent, 2 parts of surfactant and
The raw material such as 0.4 part of defoaming agent；Abrasive material is cubic boron nitride, and average grain diameter is 125 μm；Resin binder is epoxy resin liquid；
2) resin binder and diluent are added in 50 DEG C of thermostatic containers and 30min is stirred with the revolving speed of 45rpm, then
Abrasive material and surfactant is added, 120min is stirred with 80rpm revolving speed, sequentially adds foaming agent and defoaming agent and turned with 150rpm
Speed stirring 25min；It after slurry is injected into constant temperature mold, then places the mould into 45 DEG C of constant temperature roasters and is toasted, in mold
Slurry be fully cured molding to get.
The comparative example 3 of CBN resinoid bonded grinding tool
The CBN resinoid bonded grinding tool of this comparative example is grinding tool, is made of the raw material of following mass percent: thermosetting property tree
Rouge 15%, cubic boron nitride 25%, metal powder 40%, green silicon carbide 5%, calcium sulfate crystal whiskers 10%, solid lubricant 10%；It is vertical
The average grain diameter of square boron nitride is 107 μm, and for thermosetting resin with the embodiment 1 of CBN resinoid bonded grinding tool, metal powder is average
The iron powder that partial size is 20 μm, the average length of calcium sulfate crystal whiskers are 55 μm, and the average diameter of calcium sulfate crystal whiskers is 11 μm, solid profit
Lubrication prescription is the graphite powder that average grain diameter is 29 μm.
Following CBN resinoid bond mill can be used in CBN resinoid bonded grinding tool in above-described embodiment 1~6 and comparative example 3
It is prepared by the embodiment 1 or the preparation method in embodiment 2 of the preparation method of tool.The preparation side of CBN resinoid bonded grinding tool
The mold that compression moulding uses in the embodiment 1 of method includes die cavity, die cavity by cylindrical mandrel, for being set on mandrel
Die sleeve, top board and lower platen surround, and top board is shown in Fig. 1 and Fig. 2, are in circular ring shape, are provided on top board in grinding surface
On suppress shrinkage pool semielliptical shape several raised 1；Several protrusions are divided into several groups again, and the protrusion in each group is arranged successively into
Circle, each circle is concentric circles, and each adjacent circular is identical along the interval of radial direction；Interval phase in each group between adjacent protrusion
It is same and roughly the same at the interval on radial direction with adjacent circular；The projecting parallel of semielliptical shape is in institute raised on top board
It is radius=Xmm circle in the maximum cross-section of plane, the vertical range of plane where protrusion on raised highest point to top board
For Ymm；Mandrel, die sleeve and lower platen integrated setting.The Examples 1 to 6 of CBN resinoid bonded grinding tool uses CBN resin knot
When prepared by the embodiment 1 of the preparation method of mixture grinding tool, X and Y value are shown in Table 1 respectively.
The value of 1 CBN resinoid bonded grinding tool of table X and Y in the preparation
| Value | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example |
| X/mm | 1 | 2.5 | 2 | 2 | 2 | 2 | 2 |
| Y/mm | 4 | 10 | 7 | 7 | 7 | 7 | 7 |
The embodiment 1 of the preparation method of CBN resinoid bonded grinding tool
The preparation method of the CBN resinoid bonded grinding tool of the present embodiment, comprising the following steps:
1) it takes each raw material of formula ratio to be uniformly mixed, obtains mixture；
2) resulting mixture is put into the open cavity surrounded by mandrel, die sleeve and lower platen, is expected by booth material, plough
It is dispersed in molding mass uniformly, densely in open cavity with traditional handicrafts processes such as scrapers, using spray release agents in upper pressure
Release agent is uniformly coated in the one side of plate setting protrusion, top board lid is then entered into open cavity；Top board lid is entered into the mould that is open
When chamber, raised one is set facing towards open cavity；
3) parallels push-in distance is calculated, temperature program is set, using hot press in 175 DEG C of hot pressing 8h；Parallels push-in
It is placed on the height that mill is controlled on the die sleeve of mold afterwards, so that mill is formed according to the volume and tissue hardness of design；
4) after the completion of hot pressing, release, depanning obtains blank, and blank is handled by processes such as vehicle, milling, pincers, mill, dynamic balancing,
To obtain the final product.
The embodiment 2 of the preparation method of CBN resinoid bonded grinding tool
The preparation method of the CBN resinoid bonded grinding tool of the present embodiment, comprising the following steps:
1) it takes each raw material of formula ratio to be uniformly mixed, obtains mixture；
2) resulting mixture is put into after mixing in traditional dies, using hot press in 175 DEG C of hot pressing 8h；
3) after the completion of hot pressing, release, depanning obtains blank, and blank is handled by processes such as vehicle, milling, pincers, mill, dynamic balancing,
To obtain the final product.
Experimental example 1
It respectively will be using mill and CBN made from the method for the embodiment 1 of the preparation method of CBN resinoid bonded grinding tool
Grinding wheel obtained carries out grinding survey to the stainless steel parts of 40 × 40mm (long × wide) in the comparative example 2 of resinoid bonded grinding tool
Examination, the diameter of mill (grinding wheel) are 400mm, and the revolving speed of mill (grinding wheel) is 1200rpm, and workpiece is 100/min by frequency,
Using oiliness grinding fluid, it is ground test result and is shown in Table 2.
Table 2 uses the grinding test result of CBN resinoid bonded grinding tool
| Burn situation | Single maximum removal amount | It is ground the workpiece depth of parallelism | Workpiece scratches ratio | |
| Embodiment 1 | Few burn | 0.35mm | 0.024mm | 1.22% |
| Embodiment 2 | Without burn | 0.28mm | 0.033mm | 1.41% |
| Embodiment 3 | Without burn | 0.47mm | 0.019mm | 0.82% |
| Embodiment 4 | Without burn | 0.31mm | 0.022mm | 1.39% |
| Embodiment 5 | Few burn | 0.30mm | 0.027mm | 1.44% |
| Embodiment 6 | Few burn | 0.39mm | 0.021mm | 1.03% |
| Comparative example 1 | More burns | 0.18mm | 0.039mm | 5.22% |
| Comparative example 2 | Without burn | 0.21mm | 0.052mm | 1.00% |
| Comparative example 3 | Few burn | 0.33mm | 0.021mm | 1.28% |
Experimental example 2
Examples 1 to 6 and right made from method to the embodiment 2 of the preparation method using CBN resinoid bonded grinding tool
The performances such as burn, single maximum removal amount, the grinding workpiece depth of parallelism, the molten bits of chip removal of the mill of ratio 1 are tested, mill
Diameter is 400mm, and the revolving speed of mill is 1200rpm, and workpiece is 100/min by frequency, using oiliness grinding fluid, test knot
Fruit is shown in Table 3.
The performance test results of 3 CBN resinoid bonded grinding tool of table
| Burn situation | Single maximum removal amount | It is ground the workpiece depth of parallelism | Workpiece scratches ratio | |
| Embodiment 1 | Few burn | 0.26mm | 0.025mm | 2.29% |
| Embodiment 2 | Few burn | 0.23mm | 0.027mm | 2.14% |
| Embodiment 3 | Few burn | 0.36mm | 0.024mm | 1.73% |
| Embodiment 4 | Without burn | 0.30mm | 0.023mm | 2.02% |
| Embodiment 5 | Few burn | 0.27mm | 0.031mm | 1.21% |
| Embodiment 6 | Few burn | 0.21mm | 0.033mm | 1.49% |
| Comparative example 3 | More burns | 0.18mm | 0.040mm | 3.24% |
From the data in table 3, even if comparing more general CBN tree not using the grinding tool provided in specific embodiment
Rouge binding agent grinder, CBN resinoid bonded grinding tool of the invention can also make to be ground workpiece with lower burn, scuffing ratio
Example, reaching better depth of parallelism requirement and bigger single removal amount, surface CBN resinoid bonded grinding tool of the invention has
More preferably heat-sinking capability, molten bits chip removal ability, structural homogenity and grinding sharpness.
Claims (8)
1. a kind of CBN resinoid bonded grinding tool, it is characterised in that: be made of the raw material of following mass percent: thermosetting resin
10~20%, cubic boron nitride 10~25%, metal powder 20~40%, silicon carbide 5~15%, calcium sulfate 3~10%, solid profit
Lubrication prescription 5~10%.
2. CBN resinoid bonded grinding tool according to claim 1, it is characterised in that: the thermosetting resin is Gao Liudong
Property thermosetting resin.
3. CBN resinoid bonded grinding tool according to claim 1, it is characterised in that: the calcium sulfate is calcium sulfate crystal whiskers.
4. CBN resinoid bonded grinding tool according to claim 3, it is characterised in that: the average length of the calcium sulfate crystal whiskers
Degree is the 1/3~1/2 of the average grain diameter of the cubic boron nitride.
5. CBN resinoid bonded grinding tool according to claim 3 or 4, it is characterised in that: the average grain diameter of the metal powder
No more than the 1/2 of the length of the calcium sulfate crystal whiskers.
6. a kind of preparation method of CBN resinoid bonded grinding tool as described in claim 1, it is characterised in that: including following step
It is rapid: the mixture being made of each raw material of formula ratio is provided；By the mixture compression moulding, solidification to get.
7. the preparation method of CBN resinoid bonded grinding tool according to claim 6, it is characterised in that: the compression moulding
Shrinkage pool is suppressed in the grinding surface of the CBN resinoid bonded grinding tool.
8. the preparation method of CBN resinoid bonded grinding tool according to claim 7, it is characterised in that: the shrinkage pool is half
Spherical or semielliptical shape.
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| CN110732983A (en) * | 2019-10-30 | 2020-01-31 | 郑州伯利森新材料科技有限公司 | Repair-free superhard grinding wheel for processing hard and brittle materials and preparation method thereof |
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| JP2003300165A (en) * | 2002-04-03 | 2003-10-21 | Toyoda Van Moppes Ltd | Segment type grinding wheel |
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| CN103341918A (en) * | 2013-07-08 | 2013-10-09 | 长沙岱勒新材料科技有限公司 | Resin fret saw and preparation method thereof |
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| CN103770030A (en) * | 2013-12-31 | 2014-05-07 | 郑州磨料磨具磨削研究所有限公司 | Resin binder superhard material grinding wheel for roller high-speed grinding and manufacture method thereof |
| CN104493731A (en) * | 2014-12-18 | 2015-04-08 | 广东奔朗新材料股份有限公司 | Super-hard material grinding apparatus using calcium sulfate whisker as binding agent and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732983A (en) * | 2019-10-30 | 2020-01-31 | 郑州伯利森新材料科技有限公司 | Repair-free superhard grinding wheel for processing hard and brittle materials and preparation method thereof |
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