CN114714264B - Superhard CBN ceramic grinding wheel and preparation method thereof - Google Patents
Superhard CBN ceramic grinding wheel and preparation method thereof Download PDFInfo
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- CN114714264B CN114714264B CN202210428151.1A CN202210428151A CN114714264B CN 114714264 B CN114714264 B CN 114714264B CN 202210428151 A CN202210428151 A CN 202210428151A CN 114714264 B CN114714264 B CN 114714264B
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- parts
- powder
- cbn
- grinding wheel
- die
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- 238000000227 grinding Methods 0.000 title claims abstract description 50
- 239000000919 ceramic Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 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
- 238000005245 sintering Methods 0.000 claims abstract description 17
- 239000011521 glass Substances 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 13
- 239000004375 Dextrin Substances 0.000 claims abstract description 13
- 235000019425 dextrin Nutrition 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 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
- 238000000034 method Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000000748 compression moulding Methods 0.000 claims description 3
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 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
- 238000003825 pressing 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
An ultrahard CBN ceramic grinding wheel and a preparation method thereof. The technical field of grinding wheels. The stability is good, and the yield is high. The ceramic comprises, by weight, 100-120 parts of CBN abrasive, 20-30 parts of glass powder, 10-15 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; the raw materials are mixed and then placed into a die, a plurality of layers of metal nets are paved in the die at intervals, the mesh diameter of each metal net is larger than the outer diameter of the raw material, a dextrin layer is attached to the outer wall of each metal net, and sintering is performed after the die is oscillated and pressed.
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 pressing and firing, and is the most main grinding tool in grinding processing. The grinding wheel performs rough grinding, fine grinding, slotting or cutting on the outer circle, the inner circle, the plane, various molded surfaces and the like of the metal or nonmetal workpiece through high-speed rotation. The grinding wheels are of various kinds and can be classified into common abrasive grinding wheels and super abrasive grinding wheels, wherein the super abrasive grinding wheels are mainly super-hard CBN ceramic grinding wheels.
The superhard CBN ceramic grinding wheel is a ceramic grinding wheel prepared by taking a cubic boron nitride grinding material as a main raw material, and is generally prepared by taking CBN grinding material, glass powder, dextrin powder and water glass as raw materials, mixing, compacting and sintering. 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 degree of the grinding wheel in the grinding process.
In the prior art, the stability of the grinding wheel after sintering molding 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, 100-120 parts of CBN grinding 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 bond; wherein the resin powder is formed by mixing phenolic resin powder and polyimide powder according to the weight ratio of 1:1.5;
the raw materials are mixed and then placed into a die, a plurality of layers of metal nets are paved in the die at intervals, the mesh diameter of each metal net is larger than the outer diameter of the raw material, a dextrin layer is attached to the outer wall of each metal net, and sintering is performed after the die is oscillated and pressed.
And (5) immersing the metal net in the paste liquid, taking out, airing, and arranging adjacent metal nets in a staggered manner.
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 abrasive, 25 parts of glass powder, 12 parts of resin powder, 7 parts of diamond powder and 65 parts of ceramic bond.
The raw materials comprise 120 parts of CBN abrasive, 30 parts of glass powder, 15 parts of resin powder, 10 parts of diamond powder and 80 parts of ceramic bond.
The preparation method of the superhard CBN ceramic grinding wheel comprises the following steps:
s1, placing CBN abrasive, glass powder, resin powder, diamond powder and ceramic bond into a stirring tank, uniformly stirring at the speed of 500r/min, and taking out;
s2, putting the metal net into paste liquid for soaking for 1-2min, taking out and naturally airing;
s3, placing the dried metal net into a mold, and dividing the mold into a plurality of mutually communicated chambers through the metal net;
s4, pouring the raw materials obtained in the step S1 into a die, placing the die into a sintering furnace after compression molding, setting the heating rate of 150 ℃/h, stopping heating when the temperature reaches 850 ℃, preserving heat for 2 hours, and taking out and demolding to obtain a finished product.
And the sintering process in the die sintering furnace adopts a nitrogen atmosphere for protection.
Compared with the prior art, the invention realizes the formation of a three-dimensional porous multilayer structure in the grinding wheel by arranging the plurality of metal nets coated with the dextrin layers in the die, further forms the clamping of raw materials, improves the toughness and stability after molding, and effectively improves the service life of the grinding wheel and the preparation yield.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
Example 1
The superhard CBN ceramic grinding wheel comprises the following raw materials in parts by weight, 100 parts of CBN grinding material, 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 prepared 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 prepared 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 the following raw materials, 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 bond; wherein the resin powder is prepared 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 mixed and then are placed into a die, a plurality of layers of metal nets are laid in the die at intervals, the mesh diameter of each metal net is larger than the outer diameter of the raw material, a dextrin layer is attached to the outer wall of each metal net, and the metal nets are sintered after being oscillated and molded. The raw materials can pass through the metal mesh and be full of the mould, that is to say, after the raw materials are completely put into the mould, the metal mesh can be inserted into the raw materials, so that the dextrin layer on the surface of the metal mesh can form a three-dimensional porous structure in the subsequent sintering process, the raw materials are clamped, the toughness and the stability after molding are improved, and the service life and the yield of the grinding wheel are effectively improved.
And (5) immersing the metal net in the paste liquid, taking out, airing, and arranging adjacent metal nets in a staggered manner. After the dextrin is soaked in the liquid, the dextrin is adhered to the surface of the metal mesh, a dextrin layer is formed after the dextrin is dried in the air, and adjacent metal meshes are arranged in a staggered mode, so that wavy forms are formed among the dextrin layers, the wrapping and pulling effects of the dextrin layers on raw materials are further improved, and therefore overall stability is effectively improved.
The preparation method of the superhard CBN ceramic grinding wheel comprises the following steps:
s1, placing CBN abrasive, glass powder, resin powder, diamond powder and ceramic bond into a stirring tank, uniformly stirring at the speed of 500r/min, and taking out;
s2, putting the metal net into paste liquid for soaking for 1-2min, taking out and naturally airing;
s3, placing the dried metal net into a mold, and dividing the mold into a plurality of mutually communicated chambers through the metal net;
s4, pouring the raw materials obtained in the step S1 into a die, placing the die into a sintering furnace after compression molding, setting the heating rate of 150 ℃/h, stopping heating when the temperature reaches 850 ℃, preserving heat for 2 hours, and taking out and demolding to obtain a finished product.
And the sintering process in the die sintering furnace adopts a nitrogen atmosphere for protection.
Through the steps, the sintering of the raw materials is completed, and the sintered grinding wheel has the advantages of high hardness, heat resistance, oil resistance and acid and alkali resistance, has good toughness and stability, and can effectively improve the yield and the later service life of sintering molding.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (7)
1. The superhard CBN ceramic grinding wheel is characterized by comprising, by weight, 100-120 parts of CBN grinding 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 bond; wherein the resin powder is formed by mixing phenolic resin powder and polyimide powder according to the weight ratio of 1:1.5;
the raw materials are mixed and then placed into a die, a plurality of layers of metal nets are paved in the die at intervals, the mesh diameter of each metal net is larger than the outer diameter of the raw material, a dextrin layer is attached to the outer wall of each metal net, and sintering is performed after the die is oscillated and pressed.
2. The superhard CBN ceramic grinding wheel of claim 1, wherein: and (5) immersing the metal net in the paste liquid, taking out, airing, and arranging adjacent metal nets in a staggered manner.
3. The superhard CBN ceramic grinding wheel of claim 1, wherein: 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. The superhard CBN ceramic grinding wheel of claim 1, wherein: the raw materials comprise 110 parts of CBN abrasive, 25 parts of glass powder, 12 parts of resin powder, 7 parts of diamond powder and 65 parts of ceramic bond.
5. The superhard CBN ceramic grinding wheel of claim 1, wherein: the raw materials comprise 120 parts of CBN abrasive, 30 parts of glass powder, 15 parts of resin powder, 10 parts of diamond powder and 80 parts of ceramic bond.
6. A method of producing a superhard CBN ceramic grinding wheel as claimed in any one of claims 1 to 5, characterised in that: the method comprises the following steps:
s1, placing CBN abrasive, glass powder, resin powder, diamond powder and ceramic bond into a stirring tank, uniformly stirring at the speed of 500r/min, and taking out;
s2, putting the metal net into paste liquid for soaking for 1-2min, taking out and naturally airing;
s3, placing the dried metal net into a mold, and dividing the mold into a plurality of mutually communicated chambers through the metal net;
s4, pouring the raw materials obtained in the step S1 into a die, placing the die into a sintering furnace after compression molding, setting the heating rate of 150 ℃/h, stopping heating when the temperature reaches 850 ℃, preserving heat for 2 hours, and taking out and demolding to obtain a finished product.
7. The method for preparing the superhard CBN ceramic grinding wheel as claimed in claim 6, wherein: and the sintering process in the die sintering furnace adopts a nitrogen atmosphere for protection.
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 CN114714264A (en) | 2022-07-08 |
| CN114714264B true 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114714264B (en) |
Citations (9)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018118348A1 (en) * | 2016-12-23 | 2018-06-28 | Saint-Gobain Abrasives, Inc. | Abrasive articles including aggregates of silicon carbide in a vitrified bond |
-
2022
- 2022-04-22 CN CN202210428151.1A patent/CN114714264B/en active Active
Patent 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 |
| 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 |
| 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 |
|---|---|
| CN114714264A (en) | 2022-07-08 |
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