CN109531445A - A kind of high abrasion vitrified CBN wheel bonding agent - Google Patents
A kind of high abrasion vitrified CBN wheel bonding agent Download PDFInfo
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- CN109531445A CN109531445A CN201811621762.8A CN201811621762A CN109531445A CN 109531445 A CN109531445 A CN 109531445A CN 201811621762 A CN201811621762 A CN 201811621762A CN 109531445 A CN109531445 A CN 109531445A
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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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Abstract
The invention discloses a kind of high abrasion vitrified CBN wheel bonding agent, which prepares by the following method: providing SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate；By SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate mix and carry out first time ball milling, obtain mixed powder A, mixed powder A crossed into 400-500 mesh, obtain thin mixed powder A；Melting is carried out to thin mixed powder A, obtains mixture A；Zirconium dioxide, cryolite and calcium carbonate are provided；Mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed to and are carried out second of ball milling, obtains mixed powder B, mixed powder B is crossed into 400-500 mesh, obtain thin mixed powder B and etc. completion.
Description
Technical field
The present invention relates to ceramic technology fields, especially with regard to a kind of high abrasion vitrified CBN wheel bonding agent.
Background technique
Vitrified CBN wheel is to be sintered together vitrified bond and cubic boron nitride abrasive materials through high-temperature technology, cooperation with
Certain substrate support and bonding process are finally made the efficient consolidation formula grinding tool of respective shapes.On its composition and performance with normal sands
Wheel has biggish difference.In grinding wheel abrasive material using upper, cubic boron nitride used in vitrified CBN wheel (CBN) abrasive material is one
On kind of crystal structure with the consistent tetrahedral hybridization covalent bond sphalerite structure of diamond phase.Therefore CBN abrasive material both has gold
The Common advantages such as the hardness of hard rock abrasive material is high, thermal conductivity is high, abrasive grain is sharp, so that grinding wheel and bonded abrasive products grinding capacity are strong, grind
It cuts that temperature is low, grinding tool wears small, long service life, while there is the additional length high higher than heat, the chemical stability of diamond again
Place.And on the other hand, since the effect vitrified CBN wheel of vitrified bond is also equipped with following advantages: chemical stability is high, corrosion resistant
Corrosion is good, is ground wide adaptation range, and grinding tool shape is kept, and grinding accuracy is high, and grinding tool self-sharpening is good, is recycled after trimmed
Rate is high, and can meet the high fine ginding needs of difficult-to-machine material and general material well.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of high abrasion vitrified CBN wheel bonding agents, can overcome the prior art
Disadvantage.
To achieve the above object, the present invention provides a kind of high abrasion vitrified CBN wheel bonding agent, high abrasion ceramics
CBN grinding wheel bond is prepared by the following method:
SiO is provided2、Al2O3, boric acid, sodium carbonate and lithium carbonate；
By SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate mix and carry out first time ball milling, obtain mixed powder A, will mix
Powder A crosses 400-500 mesh, obtains thin mixed powder A；
Melting is carried out to thin mixed powder A, obtains mixture A；
Zirconium dioxide, cryolite and calcium carbonate are provided；
Mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed to and carried out second of ball milling, obtains mixed powder B, it will
Mixed powder B crosses 400-500 mesh, obtains thin mixed powder B；
Reductive heat treatment is carried out to thin mixed powder B, obtains mixed powder C；
Graphite powder, and mixed at high speed are added into mixed powder C, obtains mixed powder D；And
To mixed powder D carry out cold pressing and the multistage sintering, the multistage sintering include the first stage sintering, second stage sintering with
And phase III sintering.
In a preferred embodiment, by SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate mix and carry out first
Secondary ball milling specifically comprises the processes of: drum's speed of rotation 500-700rpm, Ball-milling Time 2-3h.
In a preferred embodiment, in thin mixed powder A, in parts by weight, SiO2Account for 100-150 parts, Al2O3It accounts for
10-15 parts, boric acid accounts for 30-50 parts, sodium carbonate accounts for 5-10 parts and lithium carbonate accounts for 3-6 parts.
In a preferred embodiment, melting is carried out to thin mixed powder A specifically comprises the processes of: heating rate 20-30
DEG C/min, smelting temperature is 1400-1550 DEG C, smelting time 6-8h.
In a preferred embodiment, mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed and is carried out
Second ball milling specifically comprises the processes of: drum's speed of rotation 1000-1500rpm, Ball-milling Time 15-25h.
In a preferred embodiment, in thin mixed powder B, in parts by weight, mixture A accounts for 100-150 parts, dioxy
Zirconium accounts for 5-8 parts, cryolite accounts for 2-5 parts and calcium carbonate accounts for 1-4 parts for change.
In a preferred embodiment, reductive heat treatment is carried out to thin mixed powder B specifically comprises the processes of: heat-treating atmosphere
For hydrogen, heat treatment temperature is 800-900 DEG C, heat treatment time 40-70min.
In a preferred embodiment, in thin mixed powder D, in parts by weight, mixed powder C accounts for 100 parts, and graphite powder accounts for
3-5 parts.
In a preferred embodiment, the first stage is sintered specifically comprises the processes of: sintering time 1-2h, sintering pressure
For 40-60MPa, from room temperature to sintering temperature used in the time be 2-3h；Second stage sintering specifically comprises the processes of: when sintering
Between be 0.5-1h, sintering pressure 30-50MPa, the time used in from first stage sintering temperature to second stage sintering temperature is
1-2h。
In a preferred embodiment, the phase III is sintered specifically comprises the processes of: sintering time 3-5h, sintering pressure
For 100-200MPa, the time used in from second stage sintering temperature to phase III sintering temperature is 1-2h.
Compared with prior art, high abrasion vitrified CBN wheel bonding agent of the invention has the advantages that according to subsequent reality
It tests data and can be seen that the partial size of strict control powder of the present invention and improved so that powder accumulation effect, mixed effect are more preferable
The mechanical property of final products；Present invention optimizes the raw material proportionings of ceramic material, improve the performance of product；Present invention design
Multistage raw material is added and mixed process, so that difficult mixed raw material mixability is high, while to avoid easy mixed raw material long
Die break and decrystallized problem caused by time ball milling and mixing；The present invention devises multistage sintering process, improves
The bending strength and hardness of ceramic material.
Detailed description of the invention
Fig. 1 is the method flow diagram for preparing CBN ceramics according to an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
Fig. 1 is the method flow diagram for preparing CBN ceramics according to an embodiment of the present invention.As shown, of the invention
The method for preparing CBN ceramics includes the following steps:
Step 101: SiO is provided2、Al2O3, boric acid, sodium carbonate and lithium carbonate；
Step 102: by SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate mix and carry out first time ball milling, obtain mixed powder
Mixed powder A is crossed 400-500 mesh by A, obtains thin mixed powder A；
Step 103: melting being carried out to thin mixed powder A, obtains mixture A；
Step 104: zirconium dioxide, cryolite and calcium carbonate are provided；
Step 105: mixture A, zirconium dioxide, cryolite and calcium carbonate being mixed to and carried out second of ball milling, is mixed
Powder B is closed, mixed powder B is crossed into 400-500 mesh, obtains thin mixed powder B；
Step 106: reductive heat treatment being carried out to thin mixed powder B, obtains mixed powder C；
Step 107: graphite powder, and mixed at high speed being added into mixed powder C, obtains mixed powder D；And
Step 108: cold pressing being carried out to mixed powder D and the multistage is sintered, multistage sintering includes first stage sintering, second-order
Section sintering and phase III sintering.
In a preferred embodiment, the first stage is sintered specifically comprises the processes of: sintering temperature is 950-1000 DEG C, is burnt
The knot time be 1-2h, sintering pressure 40-60MPa, from room temperature to sintering temperature used in the time be 2-3h；Second stage is burnt
Knot specifically comprises the processes of: sintering temperature is 1000-1200 DEG C, sintering time 0.5-1h, sintering pressure 30-50MPa, from the
Time used in one stage sintering temperature to second stage sintering temperature is 1-2h.
In a preferred embodiment, the phase III is sintered specifically comprises the processes of: and sintering temperature is 1200-1500 DEG C,
Sintering time is 3-5h, sintering pressure 100-200MPa, used in from second stage sintering temperature to phase III sintering temperature
Time is 1-2h.
Embodiment 1
High abrasion vitrified CBN wheel bonding agent is prepared by the following method: providing SiO2、Al2O3, boric acid, sodium carbonate and carbon
Sour lithium；By SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate mix and carry out first time ball milling, obtain mixed powder A, will mix
Powder A crosses 400 meshes, obtains thin mixed powder A；Melting is carried out to thin mixed powder A, obtains mixture A；Zirconium dioxide, fluorine aluminium are provided
Sour sodium and calcium carbonate；Mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed to and carried out second of ball milling, is obtained
Mixed powder B is crossed 400 meshes by mixed powder B, obtains thin mixed powder B；Reductive heat treatment is carried out to thin mixed powder B, obtains mixed powder
C；Graphite powder, and mixed at high speed are added into mixed powder C, obtains mixed powder D；Cold pressing is carried out to mixed powder D and the multistage burns
Knot, multistage sintering include first stage sintering, second stage sintering and phase III sintering.By SiO2、Al2O3, boric acid,
Sodium carbonate and lithium carbonate mix and carry out first time ball milling specifically comprises the processes of: drum's speed of rotation 500rpm, Ball-milling Time
For 2h.In thin mixed powder A, in parts by weight, SiO2Account for 100 parts, Al2O3 account for 10 parts, boric acid account for 30 parts, sodium carbonate account for 5 parts
And lithium carbonate accounts for 3 parts.Melting is carried out to thin mixed powder A specifically comprises the processes of: heating rate is 20 DEG C/min, and smelting temperature is
1400 DEG C, smelting time 6h.Mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed and carry out second of ball milling
Specifically comprises the processes of: drum's speed of rotation 1000rpm, Ball-milling Time 15h.In thin mixed powder B, in parts by weight, mixing
A accounts for 100 parts to material, zirconium dioxide accounts for 5 parts, cryolite accounts for 2 parts and calcium carbonate accounts for 1 part.Thin mixed powder B is carried out at heat of reduction
Reason specifically comprises the processes of: heat-treating atmosphere is hydrogen, and heat treatment temperature is 800 DEG C, heat treatment time 40min.Carefully mixing
In powder D, in parts by weight, mixed powder C accounts for 100 parts, and graphite powder accounts for 3 parts.First stage sintering specifically comprises the processes of: sintering temperature
Be 950 DEG C, sintering time 1h, sintering pressure 40MPa, from room temperature to sintering temperature used in the time be 2h；Second-order
Section sintering specifically comprises the processes of: sintering temperature is 1000 DEG C, sintering time 0.5h, sintering pressure 30MPa, from the first stage
Time used in sintering temperature to second stage sintering temperature is 1h.Phase III sintering specifically comprises the processes of: sintering temperature is
1200 DEG C, sintering time 3h, sintering pressure 100MPa, used in from second stage sintering temperature to phase III sintering temperature
Time is 1h.
Embodiment 2
High abrasion vitrified CBN wheel bonding agent is prepared by the following method: providing SiO2、Al2O3, boric acid, sodium carbonate and carbon
Sour lithium；By SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate mix and carry out first time ball milling, obtain mixed powder A, will mix
Powder A crosses 500 meshes, obtains thin mixed powder A；Melting is carried out to thin mixed powder A, obtains mixture A；Zirconium dioxide, fluorine aluminium are provided
Sour sodium and calcium carbonate；Mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed to and carried out second of ball milling, is obtained
Mixed powder B is crossed 500 meshes by mixed powder B, obtains thin mixed powder B；Reductive heat treatment is carried out to thin mixed powder B, obtains mixed powder
C；Graphite powder, and mixed at high speed are added into mixed powder C, obtains mixed powder D；Cold pressing is carried out to mixed powder D and the multistage burns
Knot, multistage sintering include first stage sintering, second stage sintering and phase III sintering.By SiO2、Al2O3, boric acid,
Sodium carbonate and lithium carbonate mix and carry out first time ball milling specifically comprises the processes of: drum's speed of rotation 700rpm, Ball-milling Time
For 3h.In thin mixed powder A, in parts by weight, SiO2Account for 150 parts, Al2O3 account for 15 parts, boric acid account for 50 parts, sodium carbonate account for 10 parts
And lithium carbonate accounts for 6 parts.Melting is carried out to thin mixed powder A specifically comprises the processes of: heating rate is 30 DEG C/min, and smelting temperature is
1550 DEG C, smelting time 8h.Mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed and carry out second of ball milling
Specifically comprises the processes of: drum's speed of rotation 1500rpm, Ball-milling Time 25h.In thin mixed powder B, in parts by weight, mixing
A accounts for 150 parts to material, zirconium dioxide accounts for 8 parts, cryolite accounts for 5 parts and calcium carbonate accounts for 4 parts.Thin mixed powder B is carried out at heat of reduction
Reason specifically comprises the processes of: heat-treating atmosphere is hydrogen, and heat treatment temperature is 900 DEG C, heat treatment time 70min.Carefully mixing
In powder D, in parts by weight, mixed powder C accounts for 100 parts, and graphite powder accounts for 5 parts.First stage sintering specifically comprises the processes of: sintering temperature
Be 1000 DEG C, sintering time 2h, sintering pressure 60MPa, from room temperature to sintering temperature used in the time be 3h；Second-order
Section sintering specifically comprises the processes of: sintering temperature is 1200 DEG C, sintering time 1h, sintering pressure 50MPa, is burnt from the first stage
Time used in junction temperature to second stage sintering temperature is 2h.Phase III sintering specifically comprises the processes of: sintering temperature 1500
DEG C, sintering time 5h, sintering pressure 200MPa, the time used in from second stage sintering temperature to phase III sintering temperature
For 2h.
Embodiment 3
High abrasion vitrified CBN wheel bonding agent is prepared by the following method: providing SiO2、Al2O3, boric acid, sodium carbonate and carbon
Sour lithium；By SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate mix and carry out first time ball milling, obtain mixed powder A, will mix
Powder A crosses 450 meshes, obtains thin mixed powder A；Melting is carried out to thin mixed powder A, obtains mixture A；Zirconium dioxide, fluorine aluminium are provided
Sour sodium and calcium carbonate；Mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed to and carried out second of ball milling, is obtained
Mixed powder B is crossed 450 meshes by mixed powder B, obtains thin mixed powder B；Reductive heat treatment is carried out to thin mixed powder B, obtains mixed powder
C；Graphite powder, and mixed at high speed are added into mixed powder C, obtains mixed powder D；Cold pressing is carried out to mixed powder D and the multistage burns
Knot, multistage sintering include first stage sintering, second stage sintering and phase III sintering.By SiO2、Al2O3, boric acid,
Sodium carbonate and lithium carbonate mix and carry out first time ball milling specifically comprises the processes of: drum's speed of rotation 600rpm, Ball-milling Time
For 2.5h.In thin mixed powder A, in parts by weight, SiO2Account for 1200 parts, Al2O3Account for 14 parts, boric acid account for 40 parts, sodium carbonate account for 6
Part and lithium carbonate account for 5 parts.Melting is carried out to thin mixed powder A specifically comprises the processes of: heating rate is 25 DEG C/min, smelting temperature
It is 1500 DEG C, smelting time 7h.Mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed and carry out second of ball
Mill specifically comprises the processes of: drum's speed of rotation 1200rpm, Ball-milling Time 20h.In thin mixed powder B, in parts by weight, mix
Closing material, A accounts for 120 parts, zirconium dioxide accounts for 6 parts, cryolite accounts for 3 parts and calcium carbonate accounts for 2 parts.Heat of reduction is carried out to thin mixed powder B
Processing specifically comprises the processes of: heat-treating atmosphere is hydrogen, and heat treatment temperature is 850 DEG C, heat treatment time 50min.Carefully mixing
It closes in powder D, in parts by weight, mixed powder C accounts for 100 parts, and graphite powder accounts for 4 parts.First stage sintering specifically comprises the processes of: sintering temperature
Degree be 980 DEG C, sintering time 1.5h, sintering pressure 50MPa, from room temperature to sintering temperature used in the time be 2.5h；
Second stage sintering specifically comprises the processes of: sintering temperature is 1100 DEG C, sintering time 0.8h, sintering pressure 40MPa, from the
Time used in one stage sintering temperature to second stage sintering temperature is 1.5h.Phase III sintering specifically comprises the processes of: sintering
Temperature is 1300 DEG C, sintering time 4h, sintering pressure 150MPa, and temperature is sintered from second stage sintering temperature to phase III
Spending the time used is 1.5h.
Comparative example 1
Unlike the first embodiment: mixed powder A is crossed into 300 meshes.The mixed powder B is crossed into 300 meshes.
Comparative example 2
By SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate mix and carry out first time ball milling specifically comprises the processes of: ball mill
Revolving speed is 1000rpm, Ball-milling Time 5h.
Comparative example 3
In thin mixed powder A, in parts by weight, SiO2Account for 200 parts, Al2O3Account for 5 parts, boric acid account for 20 parts, sodium carbonate account for 3 parts and
Lithium carbonate accounts for 2 parts.
Comparative example 4
Melting is carried out to thin mixed powder A specifically comprises the processes of: heating rate is 40 DEG C/min, and smelting temperature is 1300 DEG C, melting
Time is 5h.
Comparative example 5
Mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed and carry out second of ball milling specifically comprises the processes of: ball
Mill speed is 800rpm, Ball-milling Time 30h.
Comparative example 6
In thin mixed powder B, in parts by weight, mixture A account for 80 parts, zirconium dioxide account for 10 parts, cryolite account for 6 parts and carbon
Sour calcium accounts for 5 parts.
Comparative example 7
Reductive heat treatment is carried out to thin mixed powder B specifically comprises the processes of: heat-treating atmosphere is hydrogen, heat treatment temperature 1000
DEG C, heat treatment time 30min.
Comparative example 8
In thin mixed powder D, in parts by weight, mixed powder C accounts for 100 parts, and graphite powder accounts for 8 parts.
Comparative example 9
First stage sintering specifically comprises the processes of: sintering temperature is 1050 DEG C, sintering time 3h, sintering pressure 70MPa, from
Time used in room temperature to sintering temperature is 4h.
Comparative example 10
Second stage sintering specifically comprises the processes of: sintering temperature is 1250 DEG C, sintering time 2h, sintering pressure 60MPa, from
Time used in first stage sintering temperature to second stage sintering temperature is 0.5h.
Comparative example 11
Phase III sintering specifically comprises the processes of: sintering temperature is 1550 DEG C, sintering time 6h, sintering pressure 300MPa,
Time used in from second stage sintering temperature to phase III sintering temperature is 3h.
The test of bending strength (MPa) and hardness (GPa) are carried out to embodiment 1-3 and comparative example 1-11.It the results are shown in Table
1。
Table 1
| Bending strength | Hardness | |
| Embodiment 1 | 480 | 62 |
| Embodiment 2 | 473 | 63 |
| Embodiment 3 | 478 | 60 |
| Comparative example 1 | 421 | 52 |
| Comparative example 2 | 378 | 45 |
| Comparative example 3 | 354 | 38 |
| Comparative example 4 | 342 | 36 |
| Comparative example 5 | 384 | 47 |
| Comparative example 6 | 341 | 39 |
| Comparative example 7 | 352 | 40 |
| Comparative example 8 | 331 | 38 |
| Comparative example 9 | 314 | 34 |
| Comparative example 10 | 321 | 35 |
| Comparative example 11 | 319 | 34 |
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions are not
Want to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, much can be changed and be become
Change.The purpose of selecting and describing the exemplary embodiment is that explain the specific principles of the present invention and its practical application, from
And those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and various
Different selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (10)
1. a kind of high abrasion vitrified CBN wheel bonding agent, it is characterised in that: the high abrasion vitrified CBN wheel bonding agent be by
Following method preparation:
SiO is provided2、Al2O3, boric acid, sodium carbonate and lithium carbonate；
By the SiO2、Al2O3, boric acid, sodium carbonate and lithium carbonate mix and carry out first time ball milling, obtain mixed powder A, will
The mixed powder A crosses 400-500 mesh, obtains thin mixed powder A；
Melting is carried out to the thin mixed powder A, obtains mixture A；
Zirconium dioxide, cryolite and calcium carbonate are provided；
The mixture A, zirconium dioxide, cryolite and calcium carbonate are mixed and carried out second of ball milling, obtains mixed powder
The mixed powder B is crossed 400-500 mesh, obtains thin mixed powder B by B；
Reductive heat treatment is carried out to the thin mixed powder B, obtains mixed powder C；
Graphite powder, and mixed at high speed are added into the mixed powder C, obtains mixed powder D；And
Cold pressing and multistage sintering are carried out to the mixed powder D, the multistage sintering includes first stage sintering, second-order
Section sintering and phase III sintering.
2. high abrasion vitrified CBN wheel bonding agent as described in claim 1, it is characterised in that: by the SiO2、Al2O3, boron
Acid, sodium carbonate and lithium carbonate mix and carry out first time ball milling specifically comprises the processes of: drum's speed of rotation 500-700rpm, ball
Time consuming is 2-3h.
3. high abrasion vitrified CBN wheel bonding agent as claimed in claim 2, it is characterised in that: in the thin mixed powder A,
In parts by weight, SiO2Account for 100-150 parts, Al2O3Account for 10-15 parts, boric acid account for 30-50 parts, sodium carbonate account for 5-10 parts and carbonic acid
Lithium accounts for 3-6 parts.
4. high abrasion vitrified CBN wheel bonding agent as claimed in claim 3, it is characterised in that: carried out to the thin mixed powder A
Melting specifically comprises the processes of: heating rate is 20-30 DEG C/min, and smelting temperature is 1400-1550 DEG C, smelting time 6-8h.
5. high abrasion vitrified CBN wheel bonding agent as claimed in claim 4, it is characterised in that: by the mixture A, dioxy
Change zirconium, cryolite and calcium carbonate to mix and carry out second of ball milling specifically comprises the processes of: drum's speed of rotation 1000-
1500rpm, Ball-milling Time 15-25h.
6. high abrasion vitrified CBN wheel bonding agent as claimed in claim 5, it is characterised in that: in the thin mixed powder B,
In parts by weight, mixture A accounts for 100-150 parts, zirconium dioxide accounts for 5-8 parts, cryolite accounts for 2-5 parts and calcium carbonate accounts for 1-4
Part.
7. high abrasion vitrified CBN wheel bonding agent as claimed in claim 6, it is characterised in that: carried out to the thin mixed powder B
Reductive heat treatment specifically comprises the processes of: heat-treating atmosphere is hydrogen, and heat treatment temperature is 800-900 DEG C, heat treatment time 40-
70min。
8. high abrasion vitrified CBN wheel bonding agent as claimed in claim 7, it is characterised in that: in the thin mixed powder D,
In parts by weight, mixed powder C accounts for 100 parts, and the graphite powder accounts for 3-5 parts.
9. high abrasion vitrified CBN wheel bonding agent as claimed in claim 8, it is characterised in that: the first stage sintering
Specifically comprises the processes of: sintering time 1-2h, sintering pressure 40-60MPa, from room temperature to sintering temperature used in the time be 2-
3h；The second stage sintering specifically comprises the processes of: sintering time 0.5-1h, sintering pressure 30-50MPa, from the first rank
Time used in section sintering temperature to second stage sintering temperature is 1-2h.
10. high abrasion vitrified CBN wheel bonding agent as claimed in claim 9, it is characterised in that: the phase III sintering
Specifically comprises the processes of: sintering time 3-5h, sintering pressure 100-200MPa are burnt from second stage sintering temperature to phase III
Time used in junction temperature is 1-2h.
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