CN114714264A - Superhard CBN (cubic boron nitride) ceramic grinding wheel and preparation method thereof - Google Patents
Superhard CBN (cubic boron nitride) ceramic grinding wheel and preparation method thereof Download PDFInfo
- Publication number
- CN114714264A CN114714264A CN202210428151.1A CN202210428151A CN114714264A CN 114714264 A CN114714264 A CN 114714264A CN 202210428151 A CN202210428151 A CN 202210428151A CN 114714264 A CN114714264 A CN 114714264A
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- China
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- parts
- powder
- mold
- cbn
- grinding wheel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000227 grinding Methods 0.000 title claims abstract description 55
- 239000000919 ceramic Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229910052582 BN Inorganic materials 0.000 title description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 title description 3
- 239000000843 powder Substances 0.000 claims abstract description 65
- 239000002184 metal Substances 0.000 claims abstract description 35
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims abstract description 16
- 238000005245 sintering Methods 0.000 claims abstract description 16
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 15
- 239000010432 diamond Substances 0.000 claims abstract description 15
- 229920001353 Dextrin Polymers 0.000 claims abstract description 12
- 239000004375 Dextrin Substances 0.000 claims abstract description 12
- 235000019425 dextrin Nutrition 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 10
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004642 Polyimide Substances 0.000 claims abstract description 6
- 239000005011 phenolic resin Substances 0.000 claims abstract description 6
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 6
- 229920001721 polyimide Polymers 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 239000003082 abrasive agent Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 12
- 239000007767 bonding agent Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 238000000748 compression moulding Methods 0.000 claims description 3
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/02—Wheels in one piece
- B24D5/04—Wheels in one piece with reinforcing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/02—Wheels in one piece
- B24D7/04—Wheels in one piece with reinforcing means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
A superhard CBN ceramic grinding wheel and a preparation method thereof. The technical field of grinding wheels. Good stability and high yield. Comprises the following raw materials, by weight, 100 parts of CBN abrasive material, 120 parts of glass powder, 20-30 parts of resin powder, 5-10 parts of diamond powder and 50-80 parts of ceramic bond; wherein the resin powder is formed by mixing phenolic resin powder and polyimide powder according to the weight ratio of 1: 1.5; mixing the raw materials, putting the mixture into a mold, paving a plurality of layers of metal nets at intervals in the mold, wherein the diameters of meshes of the metal nets are larger than the outer diameters of the raw materials, attaching a dextrin layer on the outer wall of each metal net, oscillating the mold, pressing and molding, and sintering.
Description
Technical Field
The invention relates to the technical field of grinding wheels, in particular to a superhard CBN ceramic grinding wheel and a preparation method thereof.
Background
The grinding wheel is a porous body prepared by compacting and firing, and is the most important grinding tool in grinding processing. The grinding wheel performs coarse grinding, fine grinding, slotting or cutting on the excircle, the inner circle, the plane, various molded surfaces and the like of a metal or nonmetal workpiece through high-speed rotation. The grinding wheels are various in types and can be divided into common grinding material grinding wheels and superhard grinding material grinding wheels, wherein the superhard grinding material grinding wheels are mainly superhard CBN ceramic grinding wheels.
The superhard CBN ceramic grinding wheel is a ceramic grinding wheel prepared by taking cubic boron nitride grinding materials as main raw materials, and is prepared by mixing, compacting and sintering the raw materials of CBN grinding materials, glass powder, dextrin powder and water glass. The grinding wheel has the advantages of high hardness, strong toughness, heat resistance, oil resistance, acid and alkali resistance and the like, is not easy to block and cut a workpiece in the grinding process, and can effectively reduce the fatigue of the grinding wheel in the grinding process.
In the prior art, the stability of the grinding wheel after sintering and forming is poor, and the yield of the grinding wheel can be reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the superhard CBN ceramic grinding wheel with good stability and high yield and the preparation method thereof.
The invention is realized by adopting the following technical scheme: the superhard CBN ceramic grinding wheel comprises, by weight, 120 parts of CBN abrasive materials, 20-30 parts of glass powder, 10-15 parts of resin powder, 5-10 parts of diamond powder and 50-80 parts of ceramic bonding agents; wherein the resin powder is formed by mixing phenolic resin powder and polyimide powder according to the weight ratio of 1: 1.5;
mixing the raw materials, putting the mixture into a mold, paving a plurality of layers of metal nets at intervals in the mold, wherein the diameters of meshes of the metal nets are larger than the outer diameters of the raw materials, attaching a dextrin layer on the outer wall of each metal net, oscillating the mold, pressing and molding, and sintering.
The metal nets are immersed in the paste solution and then taken out and dried, and the adjacent metal nets are arranged in a staggered mode.
The raw materials comprise 100 parts of CBN abrasive, 20 parts of glass powder, 10 parts of resin powder, 5 parts of diamond powder and 50 parts of ceramic bond.
The raw materials comprise 110 parts of CBN grinding material, 25 parts of glass powder, 12 parts of resin powder, 7 parts of diamond powder and 65 parts of ceramic bonding agent.
The raw materials comprise 120 parts of CBN grinding materials, 30 parts of glass powder, 15 parts of resin powder, 10 parts of diamond powder and 80 parts of ceramic bonding agents.
The preparation method of the superhard CBN ceramic grinding wheel comprises the following steps:
s1, placing the CBN abrasive, the glass powder, the resin powder, the diamond powder and the ceramic bond into a stirring tank, uniformly stirring at the speed of 500r/min, and taking out;
s2, putting the metal net into the paste liquid, soaking for 1-2min, taking out and naturally drying;
s3, placing the dried metal net into a mold, and dividing the mold into a plurality of mutually communicated cavities through the metal net;
s4, pouring the raw materials obtained in the step S1 into a mold, placing the mold into a sintering furnace after compression molding, setting the heating speed of 150 ℃/h, stopping heating when the temperature reaches 850 ℃, keeping the temperature for 2h, taking out the mold, and demolding to obtain a finished product.
And protecting the mold sintering furnace in a nitrogen atmosphere in the sintering process.
Compared with the prior art, the metal nets coated with the dextrin layers are arranged in the die, so that a three-dimensional porous multilayer structure is formed in the grinding wheel, the raw materials are clamped, the toughness and the stability after forming are improved, the service life of the grinding wheel is prolonged, and the preparation yield of the grinding wheel is effectively improved.
Detailed Description
The present invention is further described below by way of specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
Example one
The superhard CBN ceramic grinding wheel comprises the following raw materials, by weight, 100 parts of CBN grinding materials, 20 parts of glass powder, 10 parts of resin powder, 5 parts of diamond powder and 50 parts of ceramic bond; wherein the resin powder is formed by mixing phenolic resin powder and polyimide powder according to the weight ratio of 1: 1.5.
Example two
The superhard CBN ceramic grinding wheel comprises the following raw materials, by weight, 110 parts of CBN grinding materials, 25 parts of glass powder, 12 parts of resin powder, 7 parts of diamond powder and 65 parts of ceramic bond; wherein the resin powder is formed by mixing phenolic resin powder and polyimide powder according to the weight ratio of 1: 1.5.
EXAMPLE III
The superhard CBN ceramic grinding wheel comprises, by weight, 120 parts of CBN grinding materials, 30 parts of glass powder, 15 parts of resin powder, 10 parts of diamond powder and 80 parts of ceramic bonding agents; wherein the resin powder is formed by mixing phenolic resin powder and polyimide powder according to the weight ratio of 1: 1.5.
In the three embodiments, the raw materials are placed into a mold after being mixed, a plurality of layers of metal nets are laid in the mold at intervals, the diameters of meshes of the metal nets are larger than the outer diameter of the raw materials, dextrin layers are attached to the outer walls of the metal nets, and the metal nets are vibrated, pressed and molded and then sintered. The raw materials can pass through the metal mesh and be full of the mould, that is to say, after the mould was put into completely to the raw materials, the metal mesh can alternate inside the raw materials, like this, at the in-process of follow-up sintering, the dextrin layer on metal mesh surface can form three-dimensional porous structure, forms the centre gripping to the raw materials, improves toughness and stability after the shaping, effectively improves the life and the yields of emery wheel.
The metal nets are immersed in the paste solution and then taken out and dried, and the adjacent metal nets are arranged in a staggered mode. After soaking in dextrin liquid, dextrin liquid can adhere on the surface of metal mesh, forms the dextrin layer after drying, and adjacent metal mesh dislocation set can make and form wavy between the dextrin layer if you can't you can improve the dextrin layer to the parcel and the tractive effect of raw materials to effectively improve holistic stability.
The preparation method of the superhard CBN ceramic grinding wheel comprises the following steps:
s1, placing the CBN abrasive, the glass powder, the resin powder, the diamond powder and the ceramic bond into a stirring tank, uniformly stirring at the speed of 500r/min, and taking out;
s2, putting the metal net into the paste liquid, soaking for 1-2min, taking out and naturally drying;
s3, placing the dried metal net into a mold, and dividing the mold into a plurality of mutually communicated cavities through the metal net;
s4, pouring the raw materials obtained in the step S1 into a mold, placing the mold into a sintering furnace after compression molding, setting the heating speed of 150 ℃/h, stopping heating when the temperature reaches 850 ℃, keeping the temperature for 2h, taking out the mold, and demolding to obtain a finished product.
And protecting the mold sintering furnace in a nitrogen atmosphere in the sintering process.
Through the steps, the raw materials are sintered, and the sintered grinding wheel has the advantages of high hardness, heat resistance, oil resistance, acid and alkali resistance, good toughness and stability, and can effectively improve the yield of sintering molding and prolong the service life of the later period.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (7)
1. The superhard CBN ceramic grinding wheel is characterized by comprising, by weight, 120 parts of CBN abrasive material, 20-30 parts of glass powder, 10-15 parts of resin powder, 5-10 parts of diamond powder and 50-80 parts of ceramic bonding agent; wherein the resin powder is formed by mixing phenolic resin powder and polyimide powder according to the weight ratio of 1: 1.5;
mixing the raw materials, putting the mixture into a mold, paving a plurality of layers of metal nets at intervals in the mold, wherein the diameters of meshes of the metal nets are larger than the outer diameters of the raw materials, attaching a dextrin layer on the outer wall of each metal net, oscillating the mold, pressing and molding, and sintering.
2. A superhard CBN vitrified grinding wheel as claimed in claim 1, in which: the metal nets are immersed in the paste solution and then taken out and dried, and the adjacent metal nets are arranged in a staggered mode.
3. A superhard CBN grinding wheel as claimed in claim 1, in which: the raw materials comprise 100 parts of CBN abrasive, 20 parts of glass powder, 10 parts of resin powder, 5 parts of diamond powder and 50 parts of ceramic bond.
4. A superhard CBN grinding wheel as claimed in claim 1, in which: the raw materials comprise 110 parts of CBN grinding material, 25 parts of glass powder, 12 parts of resin powder, 7 parts of diamond powder and 65 parts of ceramic bonding agent.
5. A superhard CBN grinding wheel as claimed in claim 1, in which: the raw materials comprise 120 parts of CBN grinding materials, 30 parts of glass powder, 15 parts of resin powder, 10 parts of diamond powder and 80 parts of ceramic bonding agents.
6. A method of making a superhard CBN vitrified grinding wheel according to any one of claims 1 to 5, characterised in that: the method comprises the following steps:
s1, putting the CBN abrasive, the glass powder, the resin powder, the diamond powder and the ceramic bond into a stirring tank, uniformly stirring at the speed of 500r/min, and taking out;
s2, putting the metal net into the paste liquid, soaking for 1-2min, taking out and naturally drying;
s3, placing the dried metal net into a mold, and dividing the mold into a plurality of mutually communicated cavities through the metal net;
s4, pouring the raw materials obtained in the step S1 into a mold, placing the mold into a sintering furnace after compression molding, setting the heating speed of 150 ℃/h, stopping heating when the temperature reaches 850 ℃, keeping the temperature for 2h, taking out the mold, and demolding to obtain a finished product.
7. A method of making a superhard CBN vitrified grinding wheel according to claim 6, wherein: and protecting the mold sintering furnace in a nitrogen atmosphere in the sintering process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210428151.1A CN114714264B (en) | 2022-04-22 | 2022-04-22 | Superhard CBN ceramic grinding wheel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210428151.1A CN114714264B (en) | 2022-04-22 | 2022-04-22 | Superhard CBN ceramic grinding wheel and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114714264A true CN114714264A (en) | 2022-07-08 |
| CN114714264B CN114714264B (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210428151.1A Active CN114714264B (en) | 2022-04-22 | 2022-04-22 | Superhard CBN ceramic grinding wheel and preparation method thereof |
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| Country | Link |
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| CN (1) | CN114714264B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1329730A (en) * | 1970-02-09 | 1973-09-12 | Ducommun Inc | Grinding media |
| WO1985000130A1 (en) * | 1983-06-24 | 1985-01-17 | Udo Rieser | Manufacturing of sintered ceramic moulded bodies |
| CN1079685A (en) * | 1992-01-23 | 1993-12-22 | 辛辛那提米勒克郎公司 | Make the method for vitreous bonded abrasive article and the product made from this method |
| US5738697A (en) * | 1996-07-26 | 1998-04-14 | Norton Company | High permeability grinding wheels |
| WO2002007933A1 (en) * | 2000-07-21 | 2002-01-31 | Tyrolit Schleifmittelwerke Swarovski K.G. | Ceramically bound porous grinding tool |
| CN104290042A (en) * | 2013-07-16 | 2015-01-21 | 宁波大华砂轮有限公司 | Anti-cracking and anti-knocking resin grinding wheel |
| CN106493635A (en) * | 2016-11-22 | 2017-03-15 | 华侨大学 | A kind of surface has the diadust grinding block of trench structure and processing method |
| US20180178353A1 (en) * | 2016-12-23 | 2018-06-28 | Saint-Gobain Abrasives, Inc. | Abrasive articles including aggregates of silicon carbide in a vitrified bond |
| CN207757485U (en) * | 2017-12-25 | 2018-08-24 | 白鸽磨料磨具有限公司 | A kind of heavy duty grinding wheel |
| CN112621584A (en) * | 2020-12-31 | 2021-04-09 | 郑州瑞特金刚石砂带有限公司 | Method for realizing ordered arrangement of superhard abrasives in superhard grinding tool |
-
2022
- 2022-04-22 CN CN202210428151.1A patent/CN114714264B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1329730A (en) * | 1970-02-09 | 1973-09-12 | Ducommun Inc | Grinding media |
| WO1985000130A1 (en) * | 1983-06-24 | 1985-01-17 | Udo Rieser | Manufacturing of sintered ceramic moulded bodies |
| CN1079685A (en) * | 1992-01-23 | 1993-12-22 | 辛辛那提米勒克郎公司 | Make the method for vitreous bonded abrasive article and the product made from this method |
| US5738697A (en) * | 1996-07-26 | 1998-04-14 | Norton Company | High permeability grinding wheels |
| CN1226194A (en) * | 1996-07-26 | 1999-08-18 | 诺顿公司 | High permeability grinding wheels |
| WO2002007933A1 (en) * | 2000-07-21 | 2002-01-31 | Tyrolit Schleifmittelwerke Swarovski K.G. | Ceramically bound porous grinding tool |
| CN104290042A (en) * | 2013-07-16 | 2015-01-21 | 宁波大华砂轮有限公司 | Anti-cracking and anti-knocking resin grinding wheel |
| CN106493635A (en) * | 2016-11-22 | 2017-03-15 | 华侨大学 | A kind of surface has the diadust grinding block of trench structure and processing method |
| US20180178353A1 (en) * | 2016-12-23 | 2018-06-28 | Saint-Gobain Abrasives, Inc. | Abrasive articles including aggregates of silicon carbide in a vitrified bond |
| CN207757485U (en) * | 2017-12-25 | 2018-08-24 | 白鸽磨料磨具有限公司 | A kind of heavy duty grinding wheel |
| CN112621584A (en) * | 2020-12-31 | 2021-04-09 | 郑州瑞特金刚石砂带有限公司 | Method for realizing ordered arrangement of superhard abrasives in superhard grinding tool |
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| Publication number | Publication date |
|---|---|
| CN114714264B (en) | 2024-03-19 |
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