CN107471123B - Method for improving thermal sensitivity of low-temperature ceramic bond - Google Patents
Method for improving thermal sensitivity of low-temperature ceramic bond Download PDFInfo
- Publication number
- CN107471123B CN107471123B CN201710918366.0A CN201710918366A CN107471123B CN 107471123 B CN107471123 B CN 107471123B CN 201710918366 A CN201710918366 A CN 201710918366A CN 107471123 B CN107471123 B CN 107471123B
- Authority
- CN
- China
- Prior art keywords
- ceramic bond
- low
- temperature
- temperature ceramic
- alpha alumina
- Prior art date
- 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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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
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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
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
Abstract
The invention relates to a method for improving the thermal sensitivity of a low-temperature ceramic bond. Belongs to the technical field of abrasive tools and ceramic bonding agents. The technical scheme is as follows: the alpha alumina powder with fine grain size and the common low temperature ceramic bond material are mixed and smelted at high temperature, and the interface of the alpha alumina particle fully reacts with the liquid ceramic bond while the strength and the hardness of the liquid ceramic bond are still ensured, so that the low temperature ceramic bond prepared by the method always keeps the coexistence state of liquid phase and solid phase in a large temperature range in the sintering process, and the temperature sensitivity of the low temperature ceramic bond can be greatly improved. The method has the advantages that: the fluidity of the binding agent in the sintering process can be adjusted under the condition of basically not changing the refractoriness of the ceramic binding agent only by changing the dosage of the alpha alumina, so that the sensitivity of the binding agent to the temperature is greatly reduced, and the stability of the product is improved.
Description
Technical Field
The invention belongs to the technical field of abrasive tools and ceramic binders, and particularly relates to a method for improving thermal sensitivity of a low-temperature ceramic binder.
Background
Compared with other grinding tools, the ceramic grinding tool has the advantages of high grinding precision, good self-sharpening property, acid and alkali resistance, easiness in trimming and the like, so that the ceramic grinding tool is widely applied to rough grinding, fine grinding and polishing, and particularly plays an important role in precision machining. The grinding performance of the abrasive is closely related to the abrasive grains, bond and pores in the ceramic abrasive, and the performance of the ceramic bond is one of the most important reasons for the performance of the abrasive. In the superhard material ceramic abrasive tool, the superhard abrasive particles have relatively high requirements on the bonding agent, and one important property is that the refractoriness of the bonding agent is required to be low, generally lower than 800 ℃, so that the bonding agent is called as low-temperature ceramic bonding agent, and if the refractoriness is too high, the thermal damage of the abrasive particles is easily caused. With the development of processing technology, the requirement of industrial production on low-temperature ceramic bond is higher and higher, for example, the quality stability of grinding tools, the common low-temperature ceramic bond is very sensitive to temperature in the sintering process, and if the furnace temperature is slightly different, the flowability of the ceramic bond is greatly different, so that the quality fluctuation of the grinding tools is larger.
Therefore, the invention provides a method for improving the thermal sensitivity of a low-temperature ceramic bond, aiming at the defect that the low-temperature ceramic bond used in industrial production is too sensitive to temperature in the sintering process.
Disclosure of Invention
The technical problem is as follows: the invention aims to solve the technical problem that the low-temperature ceramic bond has high sensitivity to sintering temperature, so that the quality of the ceramic grinding tool is unstable.
The technical scheme is as follows: in order to achieve the above object, the present invention provides a method for improving thermal sensitivity of a low-temperature ceramic bond, comprising the steps of:
firstly, selecting a raw material formula of a low-temperature ceramic bonding agent;
selecting superfine alpha alumina powder;
uniformly blending the ceramic bond raw material selected in the step one and the alpha alumina powder selected in the step two according to a proportion;
fourthly, drying the blend obtained in the third step, smelting the blend in a smelting furnace at a high temperature, and rapidly cooling the blend to obtain glass material;
fifthly, grinding the glass material in the step IV into the ceramic bond.
The refractoriness of the medium-low temperature ceramic bond is less than or equal to 700 ℃.
In the step (II), the average particle size of the superfine alpha alumina powder is 200nm ~ 5 mu m.
In the third step, the addition proportion of the alpha alumina powder accounts for ~ 50% of the mass of the ceramic bond raw materials, and the mixing mode is dry mixing or ball milling wet mixing.
The smelting temperature in the step (iv) should be between 1200 ℃ ~ 1600 ℃.
The method for grinding the glass material in the fifth step comprises the following steps: ball milling or jet milling.
The invention has the following beneficial effects: the ceramic bonding agent prepared by the invention always keeps the coexistence state of liquid phase and solid phase in a large temperature range in the sintering process, thereby greatly improving the temperature sensitivity of the low-temperature ceramic bonding agent.
The following specific examples of binding agents further illustrate the invention, but the scope of the invention is not limited thereto.
Example 1
Selecting one kind of R2O-B2O3-Al2O3-SiO2Is a formula of low-temperature ceramic bonding agent (R is alkali metal), and the refractoriness of the low-temperature ceramic bonding agent is about 550 ℃;
selecting alpha alumina powder with average grain size of 800 nm;
thirdly, mixing the ceramic binder raw material selected in the step I with the alpha alumina powder selected in the step II according to the mass ratio of 7: 3, carrying out ball milling wet mixing for 30 minutes;
fourthly, drying the mixture which is ball-milled and wet-mixed in the third step, then smelting at the high temperature of 1450 ℃ in a smelting furnace, and rapidly cooling to obtain glass material;
and fifthly, ball-milling the glass material in the fourth step to obtain the ceramic bond powder with the required granularity.
Example 2
Selecting one kind of R2O-Al2O3-SiO2Is a formula of low-temperature ceramic bonding agent (R is alkali metal), and the refractoriness of the low-temperature ceramic bonding agent is about 550 ℃;
selecting alpha alumina powder with average grain size of 600 nm;
thirdly, mixing the ceramic binder raw material selected in the step I with the alpha alumina powder selected in the step II according to the mass ratio of 7: 2, carrying out ball milling wet mixing for 30 minutes;
fourthly, drying the mixture which is ball-milled and wet-mixed in the third step, then smelting the mixture in a smelting furnace at a high temperature of 1400 ℃, and rapidly cooling the mixture to obtain glass material;
and fifthly, ball-milling the glass material in the fourth step to obtain the ceramic bond powder with the required granularity.
Example 3
Selecting one kind of R2O-Al2O3-SiO2Is a formula of low-temperature ceramic bonding agent (R is alkali metal), and the refractoriness of the low-temperature ceramic bonding agent is about 600 ℃;
selecting alpha alumina powder with average grain size of 600 nm;
thirdly, mixing the ceramic binder raw material selected in the step I with the alpha alumina powder selected in the step II according to the mass ratio of 9: 1, carrying out ball milling wet mixing for 30 minutes;
fourthly, drying the mixture which is ball-milled and wet-mixed in the third step, then smelting the mixture in a smelting furnace at a high temperature of 1400 ℃, and rapidly cooling the mixture to obtain glass material;
and fifthly, ball-milling the glass material in the fourth step to obtain the ceramic bond powder with the required granularity.
Claims (6)
1. A method for improving the heat sensitivity of a low-temperature ceramic bond is characterized by comprising the following steps:
firstly, selecting a raw material formula of a low-temperature ceramic bonding agent;
selecting superfine alpha alumina powder;
uniformly blending the ceramic bond raw material selected in the step one and the alpha alumina powder selected in the step two according to a proportion;
fourthly, drying the blend obtained in the third step, smelting the blend in a smelting furnace at a high temperature, and rapidly cooling the blend to obtain glass material;
fifthly, grinding the glass material in the step IV into the ceramic bond.
2. The method of improving the thermal sensitivity of a low temperature ceramic bond of claim 1 wherein: the refractoriness of the medium-low temperature ceramic bond is less than or equal to 700 ℃.
3. The method for improving the thermal sensitivity of a low temperature ceramic bond as claimed in claim 2, wherein the average particle size of the ultrafine alpha alumina powder in step (2) is 200nm ~ 5 μm.
4. The method for improving the heat sensitivity of the low-temperature ceramic bond as claimed in claim 3, wherein the addition proportion of the alpha alumina powder in the step (c) accounts for ~ 50% of the mass of the raw materials of the ceramic bond, and the mixing mode is dry mixing or ball milling wet mixing.
5. The method for improving the heat sensitivity of the low-temperature ceramic bond is characterized in that the smelting temperature in the step (iv) is 1200 ℃ ~ 1600 ℃.
6. The method of improving the thermal sensitivity of a low temperature ceramic bond of claim 5, wherein: the method for grinding the glass material in the fifth step comprises the following steps: ball milling or jet milling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710918366.0A CN107471123B (en) | 2017-09-30 | 2017-09-30 | Method for improving thermal sensitivity of low-temperature ceramic bond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710918366.0A CN107471123B (en) | 2017-09-30 | 2017-09-30 | Method for improving thermal sensitivity of low-temperature ceramic bond |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107471123A CN107471123A (en) | 2017-12-15 |
| CN107471123B true CN107471123B (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710918366.0A Expired - Fee Related CN107471123B (en) | 2017-09-30 | 2017-09-30 | Method for improving thermal sensitivity of low-temperature ceramic bond |
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| Country | Link |
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| CN (1) | CN107471123B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1288162A2 (en) * | 2001-08-30 | 2003-03-05 | Fujimura, Tadamasa | Stable aqueous suspension liquid of finely divided diamond particles metallic film containing diamond particles and method of producing the same |
| CN102794713A (en) * | 2005-09-30 | 2012-11-28 | 圣戈本磨料股份有限公司 | Bonded abrasive tool |
| CN106431364A (en) * | 2016-09-09 | 2017-02-22 | 苏州创元新材料科技有限公司 | Method for preparing high-temperature sintering ceramic aluminum oxide grinding material |
| CN106747355A (en) * | 2016-12-15 | 2017-05-31 | 萍乡顺鹏新材料有限公司 | A kind of ceramic grinding body and preparation method thereof |
-
2017
- 2017-09-30 CN CN201710918366.0A patent/CN107471123B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1288162A2 (en) * | 2001-08-30 | 2003-03-05 | Fujimura, Tadamasa | Stable aqueous suspension liquid of finely divided diamond particles metallic film containing diamond particles and method of producing the same |
| CN102794713A (en) * | 2005-09-30 | 2012-11-28 | 圣戈本磨料股份有限公司 | Bonded abrasive tool |
| CN106431364A (en) * | 2016-09-09 | 2017-02-22 | 苏州创元新材料科技有限公司 | Method for preparing high-temperature sintering ceramic aluminum oxide grinding material |
| CN106747355A (en) * | 2016-12-15 | 2017-05-31 | 萍乡顺鹏新材料有限公司 | A kind of ceramic grinding body and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 新型陶瓷刚玉磨具低温陶瓷结合剂的研究与制备;赵光涛;《中国优秀硕士论文全文数据库 工程科技I辑》;20140815;正文第8-10、22页，附图2-2 * |
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| Publication number | Publication date |
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| CN107471123A (en) | 2017-12-15 |
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