CN116713916A - Preparation method of large-pore ceramic bond grinding wheel - Google Patents
Preparation method of large-pore ceramic bond grinding wheel Download PDFInfo
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- CN116713916A CN116713916A CN202310688144.XA CN202310688144A CN116713916A CN 116713916 A CN116713916 A CN 116713916A CN 202310688144 A CN202310688144 A CN 202310688144A CN 116713916 A CN116713916 A CN 116713916A
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
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- 238000000465 moulding Methods 0.000 claims description 6
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- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000009736 wetting Methods 0.000 claims description 5
- 229910052582 BN Inorganic materials 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 4
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- 229920000647 polyepoxide Polymers 0.000 claims description 4
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 238000001238 wet grinding Methods 0.000 claims description 4
- 239000004375 Dextrin Substances 0.000 claims description 3
- 229920001353 Dextrin Polymers 0.000 claims description 3
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 3
- 235000019425 dextrin Nutrition 0.000 claims description 3
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 2
- 239000003082 abrasive agent Substances 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- 229910021418 black silicon Inorganic materials 0.000 claims description 2
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- 238000004321 preservation Methods 0.000 description 7
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 5
- 239000004005 microsphere Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000758789 Juglans Species 0.000 description 2
- 235000009496 Juglans regia Nutrition 0.000 description 2
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 2
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- 238000000354 decomposition reaction Methods 0.000 description 2
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- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 229920000426 Microplastic Polymers 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
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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
- 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
- B24D3/18—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 for porous or cellular structure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention provides a preparation method of an atmospheric ceramic bond grinding wheel, which not only solves the problems of difficult control of pore diameters, uneven distribution, poor affinity with bonding agents and the like, but also provides a novel pore-forming agent to achieve ideal pore-forming effect, prepares the atmospheric ceramic bond grinding wheel, and still can ensure higher strength under the condition of higher porosity.
Description
Technical Field
The invention relates to the field of ceramic bond grinding wheel preparation, in particular to a preparation method of an atmospheric pore ceramic bond grinding wheel.
Background
The air hole is one of three elements of the grinding tool, is a gap between the grinding material and the binding agent, and has the functions of containing scraps and removing chips, reducing grinding heat, improving grinding efficiency and the like. In three major grinding tools, resin and metal bond grinding wheels are pore-free, and only ceramic bond has natural pores, so that the grinding tools have unique advantages in the field of efficient high-precision grinding processing, and are widely applied to ferrous metal processing.
The naturally formed pores of ceramic bond sintering are generally not more than 0.02mm, the porosity is limited, enough space can not be provided for accommodating larger cut metal scraps, the metal scraps adhere to the grinding wheel, the grinding capability of the grinding wheel is reduced, and the factor has become a main obstacle for grinding low-hardness steel, powder metallurgy and heat-resistant and high-plasticity alloy by the ceramic grinding wheel. Therefore, how to obtain the porosity of the grinding tool with controllable pore diameter and uniform distribution becomes one of key technologies for manufacturing the grinding tool.
The ceramic bond grinding wheel pore-forming mode mainly comprises two pore-forming modes of particle-level pore-forming and pore-forming by adding pore-forming agents. The particle size distribution pore-forming is to control pores by adjusting the proportion of the granularity of the powder in the grinding tool formula, but for fine grinding and high-precision grinding tools, the powder requirement is fine, and the particle size distribution method is difficult to meet the requirement, so that the pore-forming agent is added to form a pore-forming method which is suitable for the ceramic bond CBN grinding wheel, and many researches, reports and application experience exist.
The reported pore-forming materials mainly comprise: naphthalene, sawdust, walnut shell powder, carbon particles, granulated sugar particles, PS microspheres (polystyrene microspheres), PMMA microspheres (polymethyl methacrylate microspheres), plastic particles, inorganic ammonium salt, al2O3 hollow spheres and the like. The pore-forming mechanisms are different, and the pore-forming effects are also different. Specifically:
1. naphthalene mainly sublimates, volatilizes or decomposes substances in the combustion process to achieve the purpose of pore-forming, and has good pore-forming effect, thus being a traditional pore-forming material. However, substances generated by volatilization and decomposition of naphthalene have toxicity, threaten the environment and human health, and the country has made production, sales and use forbidden.
2. Sawdust, walnut shell powder, carbon particles and the like. The porous ceramic material is also a traditional porous material, is applied to a common ceramic grinding tool in a large number, occupies a certain space in the compression molding process of the grinding tool, is gradually carbonized and contracted under the high-temperature sintering condition, and forms a certain gas to play a role in pore-forming. One significant drawback of such pore formers is that the pore size, shape are difficult to control, and they are not compatible with the bond, and have a large decrease in grinding wheel strength, so they are rarely used in ceramic CBN grinding wheels.
3. Plastic pellets, PS microbeads, PMMA microbeads, etc. The polymer microsphere is volatilized or burnt out at high temperature to achieve the pore-forming effect, and has certain plasticity and excessive addition, so that crack waste products are easily caused during forming. In addition, the reduction effect on the strength of the grinding wheel is large, and part of organic matters can generate toxic substances in the decomposition process, so that the grinding wheel is difficult to use in production.
4. Inorganic ammonium salts. Mainly comprises (NH 4) 2SO4 and NH4HCO3, wherein (NH 4) 2SO4 holes are small holes, and the adjustability of the air holes is poor; NH4HCO3 pore-forming has a certain large-pore-diameter pore, but the pore diameter is difficult to control.
5. Al2O3 hollow spheres. The component Al2O3 is more than or equal to 85 percent, siO2 is less than or equal to 15 percent, and the volume density is 1.4 to 1.7g/cm < 3 >. Al2O3 hollow spheres are used as pore-forming filler, and have wide application in the production of superhard grinding tools, and many related research reports are also available. The Al2O3 hollow sphere has controllable granularity, uniform shape and high strength, and can not be ablated and deformed at the firing temperature, thus being an ideal pore-forming material. However, the finest granularity of the Al2O3 hollow sphere is 0.1mm, the pore-forming application range is limited, and the method is not suitable for preparing a grinding wheel with finer granularity; the aluminum oxide content of the Al2O3 hollow sphere is more than or equal to 85 percent, the component difference between the aluminum oxide content and the ceramic bond is larger, the sintering temperature of the grinding wheel is difficult to react with the ceramic bond, so that the affinity between the aluminum oxide content and the ceramic bond is weak, the addition of the aluminum oxide is caused, and the tissue strength of the grinding wheel is greatly weakened; the wall thickness of the Al2O3 hollow sphere is large, the hollow volume accounts for only 1/3-1/2 of the total volume, and the ceramic grinding wheel with the porosity of more than 50% is difficult to prepare.
The ideal pore-forming material has the characteristics of controllable pore diameter, uniform distribution, sufficient chip containing space, good affinity with a binding agent, small influence on the strength of the grinding wheel and the like, and in conclusion, the prior pore-forming material has more or less problems when being used in the ceramic grinding wheel, and the efficient and high-quality processing of difficult-to-process materials is necessary by researching the novel pore-forming agent to prepare the ideal large-pore grinding wheel.
The floating bead is a hollow glass bead separated from fly ash, and is widely applied to the production of refractory materials and light castable and petroleum drilling, but is not reported in the application of grinding wheel pore formers. The main components of the floating beads are SiO2 and Al2O3, which are consistent with a common ceramic bond system, so that the reaction capacity of the floating beads and the common ceramic bond system is high, and the floating beads can be effectively combined when the grinding wheel is burnt, so that the influence on the strength of the grinding wheel is small; the bulk density is 0.3-0.4 g/cm < 3 >, so that the density of the grinding wheel can be greatly reduced without affecting the molding of the grinding wheel; the particle size of the floating beads is 10-400 mu m, and the floating beads are matched with the particle size of the abrasive, so that the floating beads with proper particle size can be selected according to the requirement; the wall thickness is about 5-8% of the bead diameter, and the chip containing space is full; the static pressure intensity of the floating beads is up to 70-140 MPa, the melting point is up to 1400 ℃, and the shape of the floating beads is ensured not to be deformed. These properties determine that the floating beads are an excellent ceramic bond pore-forming material, and the floating beads can be used as a material for preparing the large-pore ceramic bond grinding wheel.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides a preparation method of an atmospheric ceramic bond grinding wheel, which not only solves the problems that the pore diameters are difficult to control, the distribution is uneven, the affinity with bonding agents is poor and the like, but also provides a novel pore-forming agent to achieve ideal pore-forming effect, prepares the atmospheric ceramic bond grinding wheel, and still can ensure higher strength under the condition of higher porosity, and the technical scheme is characterized by comprising the following steps of;
preparing a ceramic bond, namely, 40-55 parts by weight of SiO2, 5-12 parts by weight of Al2O3, 10-20 parts by weight of B2O3, 5-10 parts by weight of Li2O, 2-6 parts by weight of Na2O, 1-4 parts by weight of ZnO, 1-4 parts by weight of CaO and 2-4 parts by weight of MgO, mixing, filtering by a 200-mesh screen for 3 times, firing, heating at a rate of 5-10 ℃/min, heating to 1350-1500 ℃ for 1-2 hours, taking out, performing water quenching, performing wet grinding for 10-20 hours, and sieving by a 200-400-mesh screen to obtain the bond;
step two, grinding wheel preparation materials are mixed, ceramic bond, abrasive materials and floating beads are mixed according to the proportion of 12.5-25 to 62.5-75 to 5-25, and then temporary binder is added for full wetting;
step three, molding, namely, loading the mixed materials into a mold and performing compression molding;
firing, namely sintering the formed grinding wheel according to a sintering curve;
and fifthly, bonding, namely bonding the grinding wheel blank body on a matrix through epoxy resin glue, and then processing the grinding wheel blank body into a size meeting the requirement to obtain a finished grinding wheel.
Preferably, in the firing process in the fourth step, sintering is performed according to a certain sintering curve, wherein the sintering curve is that the temperature is raised from room temperature to 450 ℃ at a temperature raising speed of 5 ℃ per minute, then the temperature is kept for one hour, the temperature is raised from 450 ℃ to 800 ℃ at a temperature raising speed of 2 ℃ per minute, and the temperature is lowered in the third stage, the temperature is kept at 800 ℃ for two hours.
Preferably, the abrasive in the second step is one or more of Cubic Boron Nitride (CBN), diamond, brown corundum (a), white corundum (WA), chrome corundum (PA), green silicon carbide (GC) and black silicon carbide (C).
Preferably, the temporary binder in the second step is one of dextrin, paraffin emulsion, sodium carboxymethyl cellulose and polyvinyl alcohol.
Preferably, the porosity is proportional to the content of the floating beads, and the porosity is thirty to seventy percent when the content of the floating beads is five to twenty-five percent by weight.
Preferably, the content of the floating beads is five to ten percent by weight, the porosity is thirty to forty percent, the porosity is forty to forty-six percent when the floating beads are ten to fifteen percent, the porosity is forty to fifty-six percent when the floating beads are fifteen to twenty percent, the porosity is forty-five to fifty-six percent, and the porosity is fifty-five to seventy percent when the floating beads are twenty to twenty-five percent.
Preferably, the material molded in the third step is dried for five to fifteen hours in an environment of fifty to eighty degrees celsius.
Preferably, the particle diameter of the floating beads is in the range of 10 μm to 400. Mu.m.
Preferably, the sintering of the second stage varies according to the material.
Preferably, the pressing in the third step is performed to a design density.
Preferably, the final cooling step in the firing process of the fourth step adopts natural cooling.
The invention has the beneficial effects that:
the problems that pore diameters are difficult to control, uneven in distribution, poor in affinity with a binding agent and the like in the use of the existing pore-forming materials are solved, a novel pore-forming agent is provided to achieve an ideal pore-forming effect, an atmospheric pore ceramic binding agent grinding wheel is prepared, and higher strength can still be ensured under the condition of higher porosity.
The large pore ceramic bond grinding wheel with controllable pore diameter, uniform distribution and sufficient chip containing space is prepared by utilizing the advantages of thin wall, small bulk density, controllable granularity and the like of the floating beads.
The high-strength large-pore ceramic bond grinding wheel is prepared by utilizing the advantage of good affinity between the floating beads and the ceramic bond, and can still ensure higher strength under the condition of higher porosity.
Drawings
FIG. 1 is a schematic view of the structure of the abrasive article of the present invention.
FIG. 2 is a table of typical composition of the floating beads of the present invention.
FIG. 3 is a graph showing the relationship between the content of floating beads and the porosity of the present invention.
Fig. 4 is a production flow chart of the present invention.
Reference numerals
1. An abrasive; 2. air holes; 3. and (3) a binding agent.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Example one, according to SiO 2 、Al 2 O 3 、B 2 O 3 、Li 2 O、Na 2 O, znO, caO, mgO, mixing 52, 10, 19, 10, 4, 2, 1 and 2, sieving with 200 mesh sieve for 3 times after mixing, and firing the sieved mixture, wherein the mixture is heated to 1400 ℃ at a rate of 10 ℃/min during firing, and the mixture needs to be subjected to heat preservation for 2 hours, and the molten mixture is poured into water for water quenching; wet milling for 5h after water quenching, and thenAnd (3) after dry grinding for 1h, sieving with a No. 400 screen, and obtaining the ceramic bond.
Weighing the materials according to the proportion of 20% by weight of ceramic bond, 70% by weight of cubic boron nitride abrasive and 10% by weight of floating beads, uniformly mixing the materials, adding 10% polyvinyl alcohol aqueous solution for wetting, and then passing through a 46# screen for 2 times; filling the mixed grinding wheel molding material into a mold, pressing and molding, and then drying the molded grinding wheel for 10 hours at 50 ℃; then placing the mixture into a furnace for sintering, wherein the sintering curve in the sintering process is as follows: preserving the temperature for 1h at the room temperature to 450 ℃,5 ℃/min and 450 ℃; heat preservation is carried out for 2 hours at the temperature of 450-800 ℃ at the speed of 2 ℃/min and at the temperature of 800 ℃, and then the heat preservation is carried out, and the heat preservation is bonded on a substrate through epoxy resin glue after cooling, thus obtaining the CBN grinding tool with the porosity of forty percent.
Mixing 55, 9, 16, 9, 3, 2, 3 and 3 according to the weight ratio of SiO2, al2O3, B2O3 and Li2O, na and O, znO, caO, mgO, sieving with a 200-mesh sieve for 3 times after mixing, firing the sieved mixture, and heating to 1450 ℃ at a rate of 5 ℃/min during firing, wherein heat preservation is required for 1h, and pouring the melted mixture into water for water quenching; wet grinding for 10h after water quenching, dry grinding for 3h, and sieving with a No. 400 screen to obtain the ceramic bond.
Weighing the materials according to the proportion of 25% by weight of ceramic bond, 55% by weight of cubic boron nitride abrasive and 20% by weight of floating beads, uniformly mixing the materials, adding 10% polyvinyl alcohol aqueous solution for wetting, and then passing through a 46# screen for 2 times; filling the mixed grinding wheel molding material into a mold, pressing and molding, and then drying the molded grinding wheel for 15 hours at 50 ℃ and under the atmospheric pressure; then placing the mixture into a furnace for sintering, wherein the sintering curve in the sintering process is as follows: preserving the temperature for 1h at the room temperature to 450 ℃,5 ℃/min and 450 ℃; preserving heat for 2h at 400-500 ℃,2 ℃/min and 500 ℃; heat preservation is carried out for 1h at 500-700 ℃,3 ℃/min and 700 ℃, heat preservation is carried out for 2h at 3 ℃/min and 850 ℃, and then the CBN grinding tool with the porosity of sixty five percent is obtained by bonding the CBN grinding tool on a substrate through epoxy resin glue after cooling.
In the third embodiment, the ceramic bond 20%, the diamond abrasive 65% and the floating bead 15% are weighed, and then the materials are mixed uniformly and then added with dextrin solution with concentration of 20% for wetting, and the mixture is screened by a No. 40 screen for 2 times; filling the mixed grinding wheel molding material into a mold, pressing and molding, and drying at 80 ℃ for 15 hours; the mixture is put into a furnace to be sintered in the air atmosphere, and the sintering curve is as follows: the temperature is increased to 3 ℃/min at the room temperature to 450 ℃, and then the temperature is kept for 1h at the temperature of 450 ℃; the temperature is increased at 450-850 ℃, the temperature is increased at 2 ℃/min, the temperature is kept for 2h at 850 ℃, and then the temperature is reduced, so that the porosity of the prepared diamond grinding tool is sixty percent.
Claims (9)
1. The preparation method of the large pore ceramic bond grinding wheel is characterized by comprising the following steps of;
preparing a ceramic bond, namely, 40-55 parts by weight of SiO2, 5-12 parts by weight of Al2O3, 10-20 parts by weight of B2O3, 5-10 parts by weight of Li2O, 2-6 parts by weight of Na2O, 1-4 parts by weight of ZnO, 1-4 parts by weight of CaO and 2-4 parts by weight of MgO, mixing, filtering by a 200-mesh screen for 3 times, firing, heating at a rate of 5-10 ℃/min, heating to 1350-1500 ℃ for 1-2 hours, taking out, performing water quenching, performing wet grinding for 10-20 hours, and sieving by a 200-400-mesh screen to obtain the bond;
step two, grinding wheel preparation materials are mixed, ceramic bond, abrasive materials and floating beads are mixed according to the proportion of 12.5-25 to 62.5-75 to 5-25, and then temporary binder is added for full wetting;
step three, molding, namely, loading the mixed materials into a mold and performing compression molding;
firing, namely sintering the formed grinding wheel according to a sintering curve;
and fifthly, bonding, namely bonding the grinding wheel blank body on a matrix through epoxy resin glue, and then processing the grinding wheel blank body into a size meeting the requirement to obtain a finished grinding wheel.
2. The method for preparing the grinding wheel with the ceramic bond with the air holes according to claim 1, wherein the sintering process in the fourth step is to sinter according to a certain sintering curve, wherein the sintering curve is that the temperature is raised from room temperature to 450 ℃ at a speed of 5 ℃ per minute, the temperature is kept for one hour, the temperature is raised from 450 ℃ to 800 ℃ at a speed of 2 ℃ per minute, the temperature is lowered for two hours, and the temperature is lowered.
3. The method for preparing the large pore ceramic bond grinding wheel according to claim 1, wherein the abrasive in the second step is one or more of Cubic Boron Nitride (CBN), diamond, brown alumina (a), white Alumina (WA), chrome corundum (PA), green silicon carbide (GC) and black silicon carbide (C).
4. The method for preparing the large pore ceramic bond grinding wheel according to claim 1, wherein the temporary bonding agent in the second step is one of dextrin, paraffin emulsion, sodium carboxymethyl cellulose and polyvinyl alcohol.
5. The method of manufacturing an air-porous ceramic bond grinding wheel according to claim 1, wherein the porosity is proportional to the content of floating beads, and the porosity is thirty to seventy percent when the content of floating beads is five to twenty-five percent by weight.
6. The method of manufacturing an air-porous ceramic bond grinding wheel according to claim 1, wherein the floating bead content is five to ten percent by weight, the porosity is thirty to forty percent, the porosity is forty to forty-six percent, the porosity is forty to fifty percent, the porosity is twenty to twenty-five percent, and the porosity is fifty-five to seventy percent.
7. The method for preparing the grinding wheel with the ceramic bond with the air holes, as claimed in claim 1, wherein the material molded in the third step is required to be dried for five to fifteen hours in an environment of fifty to eighty degrees centigrade.
8. The method of manufacturing an air-porous ceramic bond grinding wheel according to any one of claims 1 to 7, wherein the floating bead particle diameter is in the range of 10 μm to 400 μm.
9. The method of manufacturing an air-porous ceramic bond grinding wheel according to claim 2, wherein the sintering of the second stage is changed according to the material.
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| CN202310688144.XA CN116713916A (en) | 2023-06-10 | 2023-06-10 | Preparation method of large-pore ceramic bond grinding wheel |
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| CN202310688144.XA CN116713916A (en) | 2023-06-10 | 2023-06-10 | Preparation method of large-pore ceramic bond grinding wheel |
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| CN116713916A true CN116713916A (en) | 2023-09-08 |
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| CN202310688144.XA Pending CN116713916A (en) | 2023-06-10 | 2023-06-10 | Preparation method of large-pore ceramic bond grinding wheel |
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| CN (1) | CN116713916A (en) |
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