CN108789188A - A kind of ultrahard diamond grinding wheel and preparation method thereof - Google Patents
A kind of ultrahard diamond grinding wheel and preparation method thereof Download PDFInfo
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- CN108789188A CN108789188A CN201810749043.8A CN201810749043A CN108789188A CN 108789188 A CN108789188 A CN 108789188A CN 201810749043 A CN201810749043 A CN 201810749043A CN 108789188 A CN108789188 A CN 108789188A
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- abrasive material
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- powder
- material circle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- 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
Abstract
A kind of ultrahard diamond grinding wheel and preparation method thereof, belongs to super hard abrasive field；Grinding wheel includes steel core, abrasive material circle, and steel core and abrasive material circle are combined by resinoid bond resin glue caking agent, and abrasive material circle is prepared by diamond abrasive, metallic bond and additional adhesive；Metallic bond contains Cu60Sn40 powder and TiH2Powder；Abrasive material circle forms：Diamond abrasive, metallic bond and hole；Preparation method：1) by diamond abrasive, Cu60Sn40 powder and TiH2Powder mixes, and obtains mixture A；2) additional adhesive is mixed with mixture A, obtains mixture B；3) mixture B is dried；4) by the mixture B sievings after drying；5) by the mixture B after sieving, cold moudling obtains abrasive material circle green compact；6) by abrasive material circle green compact, after being sintered under inert gas atmosphere, abrasive material circle green body is obtained；7) resin glue caking agent is used, abrasive material circle green body and steel core are bonded, ultrahard diamond grinding wheel is obtained.
Description
Technical field
The present invention relates to super hard abrasive fields, and in particular to a kind of ultrahard diamond grinding wheel and preparation method thereof.
Background technology
With modern mechanical processing towards high-precision, at high speed, hard processing, dry processing (no coolant liquid) and reduce cost etc.
Direction is developed, and quite high requirement is proposed to grinding tool performance.Traditional silicon carbide and corundum conventional abrasive material mold cannot be complete
The current high speed of full up foot, efficient, high-precision grinding requirement, therefore various excellent wear-resisting properties are developed, it can carry out for a long time steady
Surely the superhard removing material processed is inevitable development trend.Currently used superhard removing material includes diamond and cube nitrogen
Change two kinds of abrasive materials of boron.Diamond is most hard material and wearability is extremely strong, is suitable for high-speed grinding and superfine grinding.Buddha's warrior attendant
Stone sand wheel is highly suitable for grinding material such as non-ferric metal alkyl materials, carbide, glass, pottery harder, frangible, that abrasive dust is shorter
Porcelain, quartz ware and semiconductor and chip material.The grinding efficiency of diamond super-hard abrasive tool (grinding wheel), machining accuracy and wear-resisting
Property etc. performances be High-speed & Precision Grinding processing in critical issue.
The bonding agent that fixed grain is used in super-hard abrasive tool is the key factor for influencing super-hard abrasive tool performance.Traditional is super
Hard grind tool (grinding wheel) mostly uses the techniques manufactures such as resin, ceramics, metallic bond sintering and plating, the problem is that monocrystalline
Grain is only embedded in by machinery embedding in bonding agent and electroplated layer, weaker with bonding agent and electroplated layer intermolecular forces.It is specific next
It says, although resinoid bond is easier processing and modifies, but poor heat resistance, and bond strength is low, and abrasive material falls off seriously, serious shadow
Ring efficiency；Vitrified bond finishing is relatively easy, and temperature in use is high, however brittleness is big, and toughness and fatigability are poor, Yi Fa
Raw embrittlement, it is difficult to be used for High-speed machining.Although it is strong that metallic bond is sintered heat resistance, usually between bonding agent and abrasive grain not
Enhanced primary treatment can be generated, thus abrasive grain is only embedded in by machinery embedding in bonding agent, hold is limited；In metal plating
Abrasive grain is also only mechanically embedded.Therefore it is easy to lead to the entirety of grinding wheel because abrasive material falls off in particle and to remove in flakes with coating
Failure, such situation are especially apparent in more unmanageable material high efficient grinding；In addition, plating thickness, abrasive material proud exposure
Low, chip space is small, and when grinding is easy to fail because the adherency of chip blocks.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of ultrahard diamond grinding wheel and preparation method thereof, which is
A kind of skive that can be born during high-speed grinding compared with big load, while there is outstanding impact resistance and good
Shape retention, specific technical solution are as follows：
A kind of ultrahard diamond grinding wheel of the present invention comprising steel core, abrasive material circle, steel core and abrasive material circle pass through resin-bonded
Agent resin glue caking agent combines, wherein abrasive material circle is prepared from the following components by mass percentage：Diamond abrasive：35~
70%, metallic bond：30~60%, additional adhesive：3~12%, diamond abrasive, metallic bond and additional adhesive
The sum of mass percent is 100%；The mass percent that the metallic bond contains ingredient is：Cu60Sn40 powder：75~
90%, TiH2Powder：5~25%, Cu60Sn40 powder and TiH2The sum of powder mass percent is 100%；Abrasive material circle composition presses volume hundred
Point ratio is：Diamond abrasive 15~50%, metallic bond 10~45%, hole 20~45%, diamond abrasive, metal combine
The sum of percent by volume of agent and hole is 100%.
The Cu60Sn40 powder and TiH2The particle size range of powder is 20~300 μm.
The additional adhesive is acrylic emulsion.
A kind of preparation method of ultrahard diamond grinding wheel of the present invention, includes the following steps：
Step 1, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, by diamond abrasive, Cu60Sn40 powder and TiH2Powder mixing is equal
It is even, mixture A is made；
Step 2, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, additional adhesive is uniformly mixed with mixture A, mixing is made
Expect B；
Step 3, it dries：
Mixture B is heated to 50~200 DEG C, is dried in mass ratio, the mixture B after drying：Mixing before drying
Expect B=80~95%；
Step 4, it is sieved：
By the mixture B sievings after drying, it is 20~300 mesh to cross grit number；
Step 5, it is molded：
By the mixture B after sieving, uniformly putting into mold, cold moudling, pressure is 30~170MPa, pressurize 20~
Abrasive material circle green compact are made in 100min；
Step 6, it is sintered：
(1) it by abrasive material circle green compact, is sintered under inert gas atmosphere, with the heating rate of 3~10 DEG C/min, from room temperature liter
Temperature is to 800~1050 DEG C of sintering temperature, 10~150min of sintering time；
(2) sintering postcooling is extremely come out of the stove for≤40 DEG C, and abrasive material circle green body is made；
Step 7, it bonds：
With resin glue caking agent, abrasive material circle green body and steel core are bonded, go Burr removal, finishing molding that superhard Buddha's warrior attendant is made
Stone sand wheel.
Above-mentioned a kind of ultrahard diamond grinding wheel and preparation method thereof, wherein：
In the step 1, incorporation time is 1~5h.
It in the step 2, stirs by mixing, mixing time is 1~3h.
In the step 3, drying soaking time is 1~3h.
In the step 4, it is sieved 2~5 times.
In the step 5, cold moudling uses hydraulic press.
In the step 6, inert gas is argon gas.
A kind of ultrahard diamond grinding wheel and preparation method thereof of the present invention, compared with prior art, has the beneficial effect that：
(1) there is ultrahard diamond grinding wheel of the invention fabulous thermal conductivity can quickly reduce grinding workpiece surface
Temperature improves grinding speed to reduce power attenuation；Additional adhesive in formula is conducive to the formation of product hole, can
With effective space for increasing the abrasive grain that receiving falls off, the utilization of abrasive material is more abundant, while metallic bond has extremely strong holding
Power；Grinding wheel has the characteristics that grinding efficiency is high, grinding temperature is low, power attenuation is low, good processing accuracy, service life are long.
(2) preparation method provided by the invention, since sintering time is short, the characteristic of abrasive material is not damaged, sintering temperature
Degree, metallic bond, porosity and the control of time make grinding wheel have good thermal conductivity and larger appearance during the work time
It considers space to be worth doing, is not easy to block during high-speed grinding, grinding is sharp, and grinding accuracy is high, and has self-sharpening.
Specific implementation mode
With reference to specific implementation case, the invention will be further described, but the invention is not limited in these to implement
Example.
In following embodiment, inert gas is argon gas.
Embodiment 1
A kind of ultrahard diamond grinding wheel comprising steel core, abrasive material circle, steel core and abrasive material circle pass through resin glue caking agent knot
It closes, wherein abrasive material circle is prepared from the following components by mass percentage：Diamond abrasive：45%, metallic bond：49%,
Additional adhesive：6%, the sum of diamond abrasive, metallic bond and additional adhesive mass percent are 100%；Described
The mass percent that metallic bond contains ingredient is：Cu60Sn40 powder：85%, TiH2Powder：15%, Cu60Sn40 powder and TiH2
The sum of powder mass percent is 100%；Abrasive material circle is formed by percent by volume：Diamond abrasive 40%, metallic bond
35%, hole 25%, diamond abrasive, metallic bond and hole the sum of percent by volume be 100%；The diamond
Abrasive material, Cu60Sn40 powder and TiH2The grain size of powder is 60 μm；The additional adhesive is acrylic emulsion.
The preparation method of above-mentioned ultrahard diamond grinding wheel, includes the following steps：
Step 1, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, by diamond abrasive, Cu60Sn40 powder and TiH2Powder mixing is equal
Even, mixture A is made in incorporation time 3h；
Step 2, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, additional adhesive is mixed with mixture A and is mixed by stirring
Uniformly, mixture B is made in mixing time 1h；
Step 3, it dries：
Mixture B is heated to 70 DEG C, drying soaking time is 1h, in mass ratio, the mixture B after drying：Before drying
Mixture B=88%；
Step 4, it is sieved：
By the mixture B sievings after drying, it is 40 mesh to cross grit number, is sieved 3 times；
Step 5, it is molded：
It uniformly puts into mold, the mixture B after sieving using hydraulic press cold moudling, pressure 72MPa, pressurize
Abrasive material circle green compact are made in 40min；
Step 6, it is sintered：
(1) it by abrasive material circle green compact, is sintered under inert gas atmosphere, with the heating rate of 10 DEG C/min, from room temperature
To 940 DEG C of sintering temperature, sintering time 30min；
(2) sintering postcooling is extremely come out of the stove for≤40 DEG C, and abrasive material circle green body is made；
Step 7, it bonds：
With resin glue caking agent, abrasive material circle green body and steel core are bonded, go Burr removal, finishing molding that superhard Buddha's warrior attendant is made
Stone sand wheel.
Embodiment 2
A kind of ultrahard diamond grinding wheel comprising steel core, abrasive material circle, steel core and abrasive material circle pass through resin glue caking agent knot
It closes, wherein abrasive material circle is prepared from the following components by mass percentage：Diamond abrasive：40%, metallic bond：54%,
Additional adhesive：6%, the sum of diamond abrasive, metallic bond and additional adhesive mass percent are 100%；Described
The mass percent that metallic bond contains ingredient is：Cu60Sn40 powder：85%, TiH2Powder：15%, Cu60Sn40 powder and TiH2
The sum of powder mass percent is 100%；Abrasive material circle is formed by percent by volume：Diamond abrasive 35%, metallic bond
40%, hole 25%, diamond abrasive, metallic bond and hole the sum of percent by volume be 100%；The diamond
Abrasive material, Cu60Sn40 powder and TiH2The grain size of powder is 120 μm；The additional adhesive is acrylic emulsion.
The preparation method of above-mentioned ultrahard diamond grinding wheel, includes the following steps：
Step 1, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, by diamond abrasive, Cu60Sn40 powder and TiH2Powder mixing is equal
Even, mixture A is made in incorporation time 3h；
Step 2, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, additional adhesive is mixed with mixture A and is mixed by stirring
Uniformly, mixture B is made in mixing time 1h；
Step 3, it dries：
Mixture B is heated to 70 DEG C, drying soaking time is 1h, in mass ratio, the mixture B after drying：Before drying
Mixture B=88%；
Step 4, it is sieved：
By the mixture B sievings after drying, it is 40 mesh to cross grit number, is sieved 3 times；
Step 5, it is molded：
It uniformly puts into mold, the mixture B after sieving using hydraulic press cold moudling, pressure 72MPa, pressurize
Abrasive material circle green compact are made in 40min；
Step 6, it is sintered：
(1) it by abrasive material circle green compact, is sintered under inert gas atmosphere, with the heating rate of 10 DEG C/min, from room temperature
To 940 DEG C of sintering temperature, sintering time 30min；
(2) sintering postcooling is extremely come out of the stove for≤40 DEG C, and abrasive material circle green body is made；
Step 7, it bonds：
With resin glue caking agent, abrasive material circle green body and steel core are bonded, go Burr removal, finishing molding that superhard Buddha's warrior attendant is made
Stone sand wheel.
Embodiment 3
A kind of ultrahard diamond grinding wheel comprising steel core, abrasive material circle, steel core and abrasive material circle pass through resin glue caking agent knot
It closes, wherein abrasive material circle is prepared from the following components by mass percentage：Diamond abrasive：47%, metallic bond：47%,
Additional adhesive：6%, the sum of diamond abrasive, metallic bond and additional adhesive mass percent are 100%；Described
The mass percent that metallic bond contains ingredient is：Cu60Sn40 powder：88%, TiH2Powder：12%, Cu60Sn40 powder and TiH2
The sum of powder mass percent is 100%；Abrasive material circle is formed by percent by volume：Diamond abrasive 41%, metallic bond
37%, hole 22%, diamond abrasive, metallic bond and hole the sum of percent by volume be 100%；The diamond
Abrasive material, Cu60Sn40 powder and TiH2The grain size of powder is 150 μm；The additional adhesive is acrylic emulsion.
The preparation method of above-mentioned ultrahard diamond grinding wheel, includes the following steps：
Step 1, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, by diamond abrasive, Cu60Sn40 powder and TiH2Powder mixing is equal
Even, mixture A is made in incorporation time 3h；
Step 2, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, additional adhesive is mixed with mixture A and is mixed by stirring
Uniformly, mixture B is made in mixing time 1h；
Step 3, it dries：
Mixture B is heated to 70 DEG C, drying soaking time is 1h, in mass ratio, the mixture B after drying：Before drying
Mixture B=88%；
Step 4, it is sieved：
By the mixture B sievings after drying, it is 40 mesh to cross grit number, is sieved 3 times；
Step 5, it is molded：
It uniformly puts into mold, the mixture B after sieving using hydraulic press cold moudling, pressure 72MPa, pressurize
Abrasive material circle green compact are made in 40min；
Step 6, it is sintered：
(1) it by abrasive material circle green compact, is sintered under inert gas atmosphere, with the heating rate of 10 DEG C/min, from room temperature
To 940 DEG C of sintering temperature, sintering time 30min；
(2) sintering postcooling is extremely come out of the stove for≤40 DEG C, and abrasive material circle green body is made；
Step 7, it bonds：
With resin glue caking agent, abrasive material circle green body and steel core are bonded, go Burr removal, finishing molding that superhard Buddha's warrior attendant is made
Stone sand wheel.
Embodiment 4
A kind of ultrahard diamond grinding wheel comprising steel core, abrasive material circle, steel core and abrasive material circle pass through resin glue caking agent knot
It closes, wherein abrasive material circle is prepared from the following components by mass percentage：Diamond abrasive：42%, metallic bond：52%,
Additional adhesive：6%, the sum of diamond abrasive, metallic bond and additional adhesive mass percent are 100%；Described
The mass percent that metallic bond contains ingredient is：Cu60Sn40 powder：90%, TiH2Powder：10%, Cu60Sn40 powder and TiH2
The sum of powder mass percent is 100%；Abrasive material circle is formed by percent by volume：Diamond abrasive 38%, metallic bond
42%, hole 20%, diamond abrasive, metallic bond and hole the sum of percent by volume be 100%；The diamond
Abrasive material, Cu60Sn40 powder and TiH2The grain size of powder is 200 μm；The additional adhesive is acrylic emulsion.
The preparation method of above-mentioned ultrahard diamond grinding wheel, includes the following steps：
Step 1, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, by diamond abrasive, Cu60Sn40 powder and TiH2Powder mixing is equal
Even, mixture A is made in incorporation time 3h；
Step 2, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, additional adhesive is mixed with mixture A and is mixed by stirring
Uniformly, mixture B is made in mixing time 1h；
Step 3, it dries：
Mixture B is heated to 70 DEG C, drying soaking time is 1h, in mass ratio, the mixture B after drying：Before drying
Mixture B=88%；
Step 4, it is sieved：
By the mixture B sievings after drying, it is 40 mesh to cross grit number, is sieved 3 times；
Step 5, it is molded：
It uniformly puts into mold, the mixture B after sieving using hydraulic press cold moudling, pressure 72MPa, pressurize
Abrasive material circle green compact are made in 40min；
Step 6, it is sintered：
(1) it by abrasive material circle green compact, is sintered under inert gas atmosphere, with the heating rate of 10 DEG C/min, from room temperature
To 940 DEG C of sintering temperature, sintering time 30min；
(2) sintering postcooling is extremely come out of the stove for≤40 DEG C, and abrasive material circle green body is made；
Step 7, it bonds：
With resin glue caking agent, abrasive material circle green body and steel core are bonded, go Burr removal, finishing molding that superhard Buddha's warrior attendant is made
Stone sand wheel.
Embodiment 5
A kind of ultrahard diamond grinding wheel comprising steel core, abrasive material circle, steel core and abrasive material circle pass through resin glue caking agent knot
It closes, wherein abrasive material circle is prepared from the following components by mass percentage：Diamond abrasive：38%, metallic bond：56%,
Additional adhesive：6%, the sum of diamond abrasive, metallic bond and additional adhesive mass percent are 100%；Described
The mass percent that metallic bond contains ingredient is：Cu60Sn40 powder：75%, TiH2Powder：25%, Cu60Sn40 powder and TiH2
The sum of powder mass percent is 100%；Abrasive material circle is formed by percent by volume：Diamond abrasive 28%, metallic bond
37%, hole 35%, diamond abrasive, metallic bond and hole the sum of percent by volume be 100%；The diamond
Abrasive material, Cu60Sn40 powder and TiH2The grain size of powder is 250 μm；The additional adhesive is acrylic emulsion.
The preparation method of above-mentioned ultrahard diamond grinding wheel, includes the following steps：
Step 1, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, by diamond abrasive, Cu60Sn40 powder and TiH2Powder mixing is equal
Even, mixture A is made in incorporation time 3h；
Step 2, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, additional adhesive is mixed with mixture A and is mixed by stirring
Uniformly, mixture B is made in mixing time 1h；
Step 3, it dries：
Mixture B is heated to 70 DEG C, drying soaking time is 1h, in mass ratio, the mixture B after drying：Before drying
Mixture B=88%；
Step 4, it is sieved：
By the mixture B sievings after drying, it is 40 mesh to cross grit number, is sieved 3 times；
Step 5, it is molded：
It uniformly puts into mold, the mixture B after sieving using hydraulic press cold moudling, pressure 72MPa, pressurize
Abrasive material circle green compact are made in 40min；
Step 6, it is sintered：
(1) it by abrasive material circle green compact, is sintered under inert gas atmosphere, with the heating rate of 10 DEG C/min, from room temperature
To 940 DEG C of sintering temperature, sintering time 30min；
(2) sintering postcooling is extremely come out of the stove for≤40 DEG C, and abrasive material circle green body is made；
Step 7, it bonds：
With resin glue caking agent, abrasive material circle green body and steel core are bonded, go Burr removal, finishing molding that superhard Buddha's warrior attendant is made
Stone sand wheel.
Claims (7)
1. a kind of ultrahard diamond grinding wheel, which is characterized in that it includes steel core, abrasive material circle to grinding wheel, and steel core and abrasive material circle pass through tree
Fat bonding agent resin glue caking agent combines, wherein abrasive material circle is prepared from the following components by mass percentage：Buddha's warrior attendant stone mill
Material：35~70%, metallic bond：30~60%, additional adhesive：3~12%, diamond abrasive, metallic bond with it is auxiliary
It is 100% to help the sum of binder mass percent；The mass percent that the metallic bond contains ingredient is：Cu60Sn40
Powder：75~90%, TiH2Powder：5~25%, Cu60Sn40 powder and TiH2The sum of powder mass percent is 100%；Abrasive material circle forms
It is by percent by volume：Diamond abrasive 15~50%, metallic bond 10~45%, hole 20~45%, diamond abrasive,
The sum of percent by volume of metallic bond and hole is 100%.
2. a kind of ultrahard diamond grinding wheel according to claim 1, which is characterized in that the Cu60Sn40 powder and TiH2
The particle size range of powder is 20~300 μm.
3. a kind of ultrahard diamond grinding wheel according to claim 1, which is characterized in that the additional adhesive is propylene
Yogurt liquid.
4. a kind of preparation method of ultrahard diamond grinding wheel described in claim 1, which is characterized in that include the following steps：
Step 1, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, by diamond abrasive, Cu60Sn40 powder and TiH2Powder is uniformly mixed, system
Obtain mixture A；
Step 2, batch mixing：
By a kind of composition proportion of ultrahard diamond grinding wheel, additional adhesive is uniformly mixed with mixture A, mixture B is made；
Step 3, it dries：
Mixture B is heated to 50~200 DEG C, is dried in mass ratio, the mixture B after drying：Mixture B=before drying
80~95%；
Step 4, it is sieved：
By the mixture B sievings after drying, it is 20~300 mesh to cross grit number；
Step 5, it is molded：
By the mixture B after sieving, uniformly putting into mold, cold moudling, pressure is 30~170MPa, pressurize 20~
Abrasive material circle green compact are made in 100min；
Step 6, it is sintered：
(1) by abrasive material circle green compact, be sintered under inert gas atmosphere, with the heating rate of 3~10 DEG C/min, from room temperature to
800~1050 DEG C of sintering temperature, 10~150min of sintering time；
(2) sintering postcooling is extremely come out of the stove for≤40 DEG C, and abrasive material circle green body is made；
Step 7, it bonds：
With resin glue caking agent, abrasive material circle green body and steel core are bonded, go Burr removal, finishing molding that ultrahard diamond sand is made
Wheel.
5. a kind of preparation method of ultrahard diamond grinding wheel according to claim 4, which is characterized in that in the step 1,
Incorporation time is 1~5h.
6. a kind of preparation method of ultrahard diamond grinding wheel according to claim 4, which is characterized in that in the step 2,
It stirs by mixing, mixing time is 1~3h.
7. a kind of preparation method of ultrahard diamond grinding wheel according to claim 4, which is characterized in that in the step 3,
Drying soaking time is 1~3h.
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| CN110153910A (en) * | 2018-12-29 | 2019-08-23 | 柳州凯通新材料科技有限公司 | A kind of processing technology of ultrahard diamond grinding wheel |
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Application publication date: 20181113 |
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| RJ01 | Rejection of invention patent application after publication |