CN107685294A - A kind of vitrified bond and preparation method thereof - Google Patents
A kind of vitrified bond and preparation method thereof Download PDFInfo
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- CN107685294A CN107685294A CN201710743335.6A CN201710743335A CN107685294A CN 107685294 A CN107685294 A CN 107685294A CN 201710743335 A CN201710743335 A CN 201710743335A CN 107685294 A CN107685294 A CN 107685294A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/14—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings
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Abstract
The invention discloses a kind of vitrified bond, is made up of the raw material of following parts by weight：21 38 parts of tetraethyl orthosilicate, 8 23 parts of boric acid, 2 12 parts of lithium nitrate, 6 17 parts of sodium nitrate, 2 14 parts of zirconium nitrate, 10 32 parts of aluminum nitrate, 3 10 parts of citric acid, 90 97 parts of deionized water.The granularity of vitrified bond prepared by sol-gal process can reach Nano grade, therefore, refractoriness can be reduced, lifting simultaneously and the bond strength of abrasive material, preparation method provided by the invention saves a series of processes such as the high melt of conventional method, water quenching, broken, ball milling, can directly obtain nano level bonding agent powder.
Description
Technical field
The invention belongs to abrasive material vitrified bond technical field, and in particular to a kind of vitrified bond and its preparation side
Method.
Background technology
At a high speed, it is efficient and it is high-precision be modern grinding basic demand.Ceramic bond super-hard abrasive tool is to use ceramic junction
Mixture（Glass phase）A kind of grinding tool for mutually combining super hard abrasive as bridge, it combine super hard abrasive with ceramics it is excellent
Point, have hardness is high, heat-resist, shape retention is good, the porosity is big, easy chip removal, the workpiece that is not easy to burn, easily finishing, mill
Self-sharpening is good during cutting, and the series of advantages such as service life length, has become grinding tool needed for modern grinding in the last few years
The focus of product R ＆ D.Wherein, it is emphasis to develop high performance vitrified bond.
The present widely used bonding agent of grinding tool industry is mainly organic bond, has phenolic resin, epoxy resin and gathers
Urethane etc., organic resin is easy to use, and adhesive strength is high, but heat resistance is bad, and environmental pollution is big during grinding, with people's ring
The enhancing of consciousness is protected, the concern of people is increasingly caused the drawbacks of organic resin.
Vitrified bonded grinding tool has green, and adhesive strength is higher, and heat resistance is good, cuts sharp, grinding efficiency
Height, it is not easy to generate heat in grinding process and blocks, thermal coefficient of expansion is small, machining accuracy easy to control, and the features such as easily repair.Ceramics
Binding agent grinder is generally used for corase grind, half fine grinding, fine grinding and the polishing of some products and the larger form grinding of contact area etc.,
Vitrified bonded grinding tool is mainly emery wheel.
Vitrified bond is prepared using high melt and water quenching mostly at present, and then crushing and screening is made, and it was prepared
Journey is complicated, high energy consumption, bonding agent stability it is difficult to ensure that.
The content of the invention
The purpose of the present invention is in view of the deficiencies of the prior art, there is provided a kind of vitrified bond and preparation method thereof.
The purpose of the present invention is realized in the following manner：
A kind of vitrified bond, it is made up of the raw material of following parts by weight：Tetraethyl orthosilicate 21-38 parts, boric acid 8-23 parts, lithium nitrate
2-12 parts, sodium nitrate 6-17 parts, zirconium nitrate 2-14 parts, aluminum nitrate 10-32 parts, citric acid 3-10 parts, deionized water 90-97 parts.
The preparation method of vitrified bond described above, is comprised the following steps that：
（1）By citric acid dissolving in deionized water, then by tetraethyl orthosilicate, boric acid, lithium nitrate, sodium nitrate, zirconium nitrate and nitre
Sour aluminium is added in the above-mentioned aqueous solution, is stirred；
（2）By step（1）Gained mixed solution, which is put into 70-90 DEG C of baking oven, heats 1-3h, forms colloidal sol；
（3）Again by step（2）Gained colloidal sol dehydrating condensation 1-2h under the conditions of 150-200 DEG C, form xerogel；
（4）By step（3）Gained xerogel calcines 1-2h at 400-500 DEG C, obtains vitrified bond.
Vitrified bond provided by the invention, the application in the preparation of conventional ceramic grinding tool.
Vitrified bond provided by the invention, the application in super-hard abrasive tool preparation.
Sol-gel process is exactly to make presoma with the compound containing high chemical active ingredient, by these raw materials under liquid phase
Uniformly mixing, and be hydrolyzed, be condensed chemical reaction, stable vitreosol system, the aged glue of colloidal sol are formed in the solution
Intergranular slowly polymerize, and forms the gel of three-dimensional space network structure, the solvent to lose flowability is filled between gel network, formed
Gel.Gel is by drying, sintering curing prepares molecule or even the material of nanometer substructure.
The granularity of vitrified bond prepared by sol-gal process can reach Nano grade, therefore, can reduce refractoriness,
Lifting simultaneously and the bond strength of abrasive material, preparation method provided by the invention save the high melt of conventional method, water quenching, broken
A series of processes such as broken, ball milling, it can directly obtain nano level bonding agent powder.
Relative to prior art, the present invention prepares vitrified bond using sol-gal process, and preparation process is simple, easily control
System, energy consumption is low, fine size, has good bond strength with abrasive material, greatly improves wheel life.
Embodiment
Embodiment 1：
A kind of vitrified bond, it is made up of the raw material of following parts by weight：Tetraethyl orthosilicate 21-38 parts, boric acid 8-23 parts, lithium nitrate
2-12 parts, sodium nitrate 6-17 parts, zirconium nitrate 2-14 parts, aluminum nitrate 10-32 parts, citric acid 3-10 parts, deionized water 90-97 parts.
The preparation method of vitrified bond described above, is comprised the following steps that：
（1）By citric acid dissolving in deionized water, then by tetraethyl orthosilicate, boric acid, lithium nitrate, sodium nitrate, zirconium nitrate and nitre
Sour aluminium is added in the above-mentioned aqueous solution, is stirred；
（2）By step（1）Gained mixed solution, which is put into 70-90 DEG C of baking oven, heats 1-3h, forms colloidal sol；
（3）Again by step（2）Gained colloidal sol dehydrating condensation 1-2h under the conditions of 150-200 DEG C, form xerogel；
（4）By step（3）Gained xerogel calcines 1-2h at 400-500 DEG C, obtains vitrified bond.
Vitrified bond provided by the invention, the application in the preparation of conventional ceramic grinding tool.
Vitrified bond provided by the invention, the application in super-hard abrasive tool preparation.
Embodiment 2：
A kind of vitrified bond, it is made up of the raw material of following parts by weight：The kg of tetraethyl orthosilicate 21, the kg of boric acid 8, lithium nitrate 2
Kg, the kg of sodium nitrate 6, the kg of zirconium nitrate 2, the kg of aluminum nitrate 10, the kg of citric acid 3, the kg of deionized water 90.
The preparation method of vitrified bond described above, is comprised the following steps that：
（1）By citric acid dissolving in deionized water, then by tetraethyl orthosilicate, boric acid, lithium nitrate, sodium nitrate, zirconium nitrate and nitre
Sour aluminium is added in the above-mentioned aqueous solution, is stirred；
（2）By step（1）Gained mixed solution, which is put into 70 DEG C of baking oven, heats 1h, forms colloidal sol；
（3）Again by step（2）Gained colloidal sol dehydrating condensation 1h under the conditions of 150 DEG C, form xerogel；
（4）By step（3）Gained xerogel calcines 1h at 400 DEG C, obtains vitrified bond.
Embodiment 3：
A kind of vitrified bond, it is made up of the raw material of following parts by weight：The kg of tetraethyl orthosilicate 25, the kg of boric acid 10, lithium nitrate 4
Kg, the kg of sodium nitrate 8, the kg of zirconium nitrate 5, the kg of aluminum nitrate 15, the kg of citric acid 4, the kg of deionized water 92.
The preparation method of vitrified bond described above, is comprised the following steps that：
（1）By citric acid dissolving in deionized water, then by tetraethyl orthosilicate, boric acid, lithium nitrate, sodium nitrate, zirconium nitrate and nitre
Sour aluminium is added in the above-mentioned aqueous solution, is stirred；
（2）By step（1）Gained mixed solution, which is put into 75 DEG C of baking oven, heats 1.5h, forms colloidal sol；
（3）Again by step（2）Gained colloidal sol dehydrating condensation 1.2h under the conditions of 160 DEG C, form xerogel；
（4）By step（3）Gained xerogel calcines 1.2h at 420 DEG C, obtains vitrified bond.
Embodiment 4：
A kind of vitrified bond, it is made up of the raw material of following parts by weight：The kg of tetraethyl orthosilicate 28, the kg of boric acid 15, lithium nitrate 6
Kg, the kg of sodium nitrate 10, the kg of zirconium nitrate 8, the kg of aluminum nitrate 20, the kg of citric acid 5, the kg of deionized water 94.
The preparation method of vitrified bond described above, is comprised the following steps that：
（1）By citric acid dissolving in deionized water, then by tetraethyl orthosilicate, boric acid, lithium nitrate, sodium nitrate, zirconium nitrate and nitre
Sour aluminium is added in the above-mentioned aqueous solution, is stirred；
（2）By step（1）Gained mixed solution, which is put into 80 DEG C of baking oven, heats 2h, forms colloidal sol；
（3）Again by step（2）Gained colloidal sol dehydrating condensation 1.4h under the conditions of 170 DEG C, form xerogel；
（4）By step（3）Gained xerogel calcines 1.4h at 440 DEG C, obtains vitrified bond.
Embodiment 5：
A kind of vitrified bond, it is made up of the raw material of following parts by weight：The kg of tetraethyl orthosilicate 30, the kg of boric acid 18, lithium nitrate 8
Kg, the kg of sodium nitrate 12, the kg of zirconium nitrate 10, the kg of aluminum nitrate 25, the kg of citric acid 6, the kg of deionized water 95.
The preparation method of vitrified bond described above, is comprised the following steps that：
（1）By citric acid dissolving in deionized water, then by tetraethyl orthosilicate, boric acid, lithium nitrate, sodium nitrate, zirconium nitrate and nitre
Sour aluminium is added in the above-mentioned aqueous solution, is stirred；
（2）By step（1）Gained mixed solution, which is put into 82 DEG C of baking oven, heats 2.2h, forms colloidal sol；
（3）Again by step（2）Gained colloidal sol dehydrating condensation 1.6h under the conditions of 180 DEG C, form xerogel；
（4）By step（3）Gained xerogel calcines 1.6h at 460 DEG C, obtains vitrified bond.
Embodiment 6：
A kind of vitrified bond, it is made up of the raw material of following parts by weight：The kg of tetraethyl orthosilicate 35, the kg of boric acid 20, lithium nitrate 10
Kg, the kg of sodium nitrate 15, the kg of zirconium nitrate 12, the kg of aluminum nitrate 30, the kg of citric acid 8, the kg of deionized water 96.
The preparation method of vitrified bond described above, is comprised the following steps that：
（1）By citric acid dissolving in deionized water, then by tetraethyl orthosilicate, boric acid, lithium nitrate, sodium nitrate, zirconium nitrate and nitre
Sour aluminium is added in the above-mentioned aqueous solution, is stirred；
（2）By step（1）Gained mixed solution, which is put into 86 DEG C of baking oven, heats 2.6h, forms colloidal sol；
（3）Again by step（2）Gained colloidal sol dehydrating condensation 1.8h under the conditions of 190 DEG C, form xerogel；
（4）By step（3）Gained xerogel calcines 1.8h at 480 DEG C, obtains vitrified bond.
Embodiment 7：
A kind of vitrified bond, it is made up of the raw material of following parts by weight：The kg of tetraethyl orthosilicate 38, the kg of boric acid 23, lithium nitrate 12
Kg, the kg of sodium nitrate 17, the kg of zirconium nitrate 14, the kg of aluminum nitrate 32, the kg of citric acid 10, the kg of deionized water 97.
The preparation method of vitrified bond described above, is comprised the following steps that：
（1）By citric acid dissolving in deionized water, then by tetraethyl orthosilicate, boric acid, lithium nitrate, sodium nitrate, zirconium nitrate and nitre
Sour aluminium is added in the above-mentioned aqueous solution, is stirred；
（2）By step（1）Gained mixed solution, which is put into 90 DEG C of baking oven, heats 3h, forms colloidal sol；
（3）Again by step（2）Gained colloidal sol dehydrating condensation 2h under the conditions of 200 DEG C, form xerogel；
（4）By step（3）Gained xerogel calcines 2h at 500 DEG C, obtains vitrified bond.
Experimental example
Skive is prepared using the embodiment 2-7 vitrified bonds prepared, is comprised the following steps that：
（1）Take 15% polyimide resin powder and 15% vitrified bond to be put into batch mixer and mix 24 hours, cross 300 mesh
Sieve, obtains combined binder；
（2）70% diamond dust is put into batch mixer with combined binder and mixed 6 hours, it is total to be then slowly added into raw material
2% acrylic emulsion of weight continues mixing 8 hours, after 80 mesh standard sieves, obtains emery wheel compound；
（3）Emery wheel compound is gently uniformly put into mould and struck off, inserts hydraulic press cover half hot pressing, temperature is 260 DEG C, pressure
Power is 125MPa, pressurize 3 hours, emery wheel base substrate is obtained after cooling and mould unloading；
（4）Emery wheel base substrate is inserted in sintering furnace and sintered, is warming up to 190 DEG C within 7 hours, then temperature-gradient method to final sintering temperature
730 DEG C, 2 hours are incubated, is cooled to room temperature taking-up；
（5）Emery wheel base substrate after sintering is processed on lathe and grinding machine, packs, be put in storage after the assay was approved, obtain finished product emery wheel.
Comparative example
Skive is prepared using existing commercially available vitrified bond, is comprised the following steps that：
（1）Take 15% polyimide resin powder and 15% vitrified bond to be put into batch mixer and mix 24 hours, cross 300 mesh
Sieve, obtains combined binder；
（2）70% diamond dust is put into batch mixer with combined binder and mixed 6 hours, it is total to be then slowly added into raw material
2% acrylic emulsion of weight continues mixing 8 hours, after 80 mesh standard sieves, obtains emery wheel compound；
（3）Emery wheel compound is gently uniformly put into mould and struck off, inserts hydraulic press cover half hot pressing, temperature is 260 DEG C, pressure
Power is 125MPa, pressurize 3 hours, emery wheel base substrate is obtained after cooling and mould unloading；
（4）Emery wheel base substrate is inserted in sintering furnace and sintered, is warming up to 190 DEG C within 7 hours, then temperature-gradient method to final sintering temperature
730 DEG C, 2 hours are incubated, is cooled to room temperature taking-up；
（5）Emery wheel base substrate after sintering is processed on lathe and grinding machine, packs, be put in storage after the assay was approved, obtain finished product emery wheel.
Refractoriness is determined using SCN-802 Modeling Material fire resistances tester：By the emery wheel powder of preparation under 15MPa
φ 8 × 10mm circular columns samples are compressed to, are kept flat on a ceramic substrate, are put into tester heating zone, programming rate is 5 DEG C/
Min, when temperature is close to material refractoriness, often raises 10 DEG C and be incubated 1 hour, become the temperature of bowlder with the corner of emery wheel cylinder
Refractoriness is referred to for material, test result is shown in Table 1, and experimental example and comparative example diamond wheel grinding result of the test are also shown in Table 1.
From table 1 it will be seen that the refractoriness of the skive prepared with the vitrified bond for preparing of the present invention,
Bond strength, abrasive material are higher than comparative example than with relative grinding efficiency, prepared by the vitrified bond for illustrating to be prepared with the present invention
Skive there is high thermal stability, heat-resist, loss is low, and wearability is good, and grinding efficiency is high, service life length.
Above-described is only the preferred embodiment of the present invention, it is noted that for those skilled in the art,
Under the premise of general idea of the present invention is not departed from, some changes and improvements can also be made, these should also be considered as the present invention's
Protection domain.
Claims (4)
- A kind of 1. vitrified bond, it is characterised in that：It is made up of the raw material of following parts by weight：Tetraethyl orthosilicate 21-38 parts, boric acid 8-23 parts, lithium nitrate 2-12 parts, sodium nitrate 6-17 parts, zirconium nitrate 2-14 parts, aluminum nitrate 10-32 parts, citric acid 3-10 parts, go from Sub- water 90-97 parts.
- 2. the preparation method of vitrified bond as claimed in claim 1, it is characterised in that：Comprise the following steps that：（1）By citric acid dissolving in deionized water, then by tetraethyl orthosilicate, boric acid, lithium nitrate, sodium nitrate, zirconium nitrate and nitre Sour aluminium is added in the above-mentioned aqueous solution, is stirred；（2）By step（1）Gained mixed solution, which is put into 70-90 DEG C of baking oven, heats 1-3h, forms colloidal sol；（3）Again by step（2）Gained colloidal sol dehydrating condensation 1-2h under the conditions of 150-200 DEG C, form xerogel；（4）By step（3）Gained xerogel calcines 1-2h at 400-500 DEG C, obtains vitrified bond.
- 3. vitrified bond according to claim 1, it is characterised in that：Application in the preparation of conventional ceramic grinding tool.
- 4. vitrified bond according to claim 1, it is characterised in that：Application in super-hard abrasive tool preparation.
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Cited By (5)
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| CN108942705A (en) * | 2018-07-25 | 2018-12-07 | 佛山陵朝新材料有限公司 | A kind of preparation method of high-strength stable type ceramic binder material |
| CN109093527A (en) * | 2018-09-04 | 2018-12-28 | 芜湖瑞德机械科技有限公司 | High rigidity PCD composite sheet bonding agent and preparation method thereof |
| CN109129214A (en) * | 2018-09-04 | 2019-01-04 | 芜湖瑞德机械科技有限公司 | Wear-resisting PCD composite sheet bonding agent and preparation method thereof |
| CN114473890A (en) * | 2022-03-15 | 2022-05-13 | 合肥陶陶新材料科技有限公司 | High-abrasion-resistance grinding wheel for ceramic part and preparation method thereof |
| CN114986402A (en) * | 2022-06-29 | 2022-09-02 | 郑州磨料磨具磨削研究所有限公司 | High-performance low-temperature ceramic bond grinding wheel and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108942705A (en) * | 2018-07-25 | 2018-12-07 | 佛山陵朝新材料有限公司 | A kind of preparation method of high-strength stable type ceramic binder material |
| CN109093527A (en) * | 2018-09-04 | 2018-12-28 | 芜湖瑞德机械科技有限公司 | High rigidity PCD composite sheet bonding agent and preparation method thereof |
| CN109129214A (en) * | 2018-09-04 | 2019-01-04 | 芜湖瑞德机械科技有限公司 | Wear-resisting PCD composite sheet bonding agent and preparation method thereof |
| CN114473890A (en) * | 2022-03-15 | 2022-05-13 | 合肥陶陶新材料科技有限公司 | High-abrasion-resistance grinding wheel for ceramic part and preparation method thereof |
| CN114986402A (en) * | 2022-06-29 | 2022-09-02 | 郑州磨料磨具磨削研究所有限公司 | High-performance low-temperature ceramic bond grinding wheel and preparation method thereof |
| CN114986402B (en) * | 2022-06-29 | 2024-03-22 | 郑州磨料磨具磨削研究所有限公司 | High-performance low-temperature ceramic bond grinding wheel and preparation method thereof |
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Application publication date: 20180213 |