CN105546996A - Method for preventing fracture of blanks during sintering ceramic forming of overlength ceramic rod blank - Google Patents
Method for preventing fracture of blanks during sintering ceramic forming of overlength ceramic rod blank Download PDFInfo
- Publication number
- CN105546996A CN105546996A CN201510922389.XA CN201510922389A CN105546996A CN 105546996 A CN105546996 A CN 105546996A CN 201510922389 A CN201510922389 A CN 201510922389A CN 105546996 A CN105546996 A CN 105546996A
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- CN
- China
- Prior art keywords
- blank
- objective table
- kiln car
- ceramic rod
- frictional resistance
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/12—Travelling or movable supports or containers for the charge
- F27D3/123—Furnace cars
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/15—Composition, conformation or state of the charge characterised by the form of the articles
- F27M2001/1504—Ceramic articles
- F27M2001/1526—Elongated articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a method for preventing fracture of blanks during sintering ceramic forming of an overlength ceramic rod blank. The method is characterized by comprising the following steps: designing a kiln car objective table (1) to a state of being inclined relative to the ground, wherein an inclination angle alpha of the kiln car objective table (1), relative to the ground, is determined by the friction coefficients of the kiln car objective table (1), and a component force Fh of the gravity Fg of a blank (2) along the inclined plane equals to the sliding frictional resistance Fm of the blank (2); and then putting the blank (2) onto the kiln car objective table (1) to perform blank sintering. The method has the advantages that the length-diameter ratio of the ceramic rod blank which can be sintered is 10:1-50:1, and shrinkage crack cannot occur.
Description
Technical field
The invention belongs to ceramic rod blank and sinter porcelain technical field into, particularly relate to a kind of overlength ceramic rod blank and sinter the method that porcelain process prevents blank from rupturing into.
Background technology
In prior art, the volume shrinkage mass of 16.5-21% can be produced when sintering porcelain process at ceramic batch, when blank horizontal positioned, become porcelain to shrink the centripetal horizontal displacement of blank far-end caused, the molecular binding affinities dragging blank of pressured base material inside overcomes blank gravity and realizes the frictional resistance holding the generation of burning platform.When ceramic pellet is compressing with 120Mpa/ cm2 pressure, the maximum draw ratio of bar that can be sintered into porcelain is about 10:1, and when exceeding this scope, tearing tendency appears in blank.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of overlength ceramic rod blank and sinters the method that porcelain process prevents blank from rupturing into, and solve bar draw ratio that ceramic pellet is sintered into porcelain when being greater than 10:1, the problem of tearing tendency appears in blank.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method providing overlength ceramic rod blank to sinter porcelain process into prevent blank from rupturing, wherein kiln car stage design is become the state with ground inclination, described kiln car objective table and ground inclination angle [alpha] are determined by the coefficient of friction of kiln car objective table, and meet blank gravity Fg equals blank sliding-frictional resistance Fm along the component Fh that inclined plane obtains, then blank is put on kiln car objective table and carries out blank sintering.
The component Fh that described blank gravity Fg obtains along inclined plane equals sliding-frictional resistance Fm.
Described sliding-frictional resistance Fm equals blank gravity Fg is multiplied by blank and kiln car objective table coefficient of friction COEFFICIENT K to inclined-plane pressure Fy.
Described component Fh equals sliding-frictional resistance Fm, described sliding-frictional resistance Fm equals blank gravity Fg and can obtain the coefficient of friction K that inclined-plane pressure Fy is multiplied by blank and kiln car objective table: tg α=Fh/Fy=K.
Burning ceramics bar draw ratio after described blank sintering is 10:1-50:1.
Main points of the present invention are, kiln car stage design is become the state with ground inclination, blank gravity is utilized to overcome the sliding-frictional resistance of the contraction displacement that is shaped along the component that inclined plane obtains, when component equals sliding-frictional resistance, blank is equivalent to zero resistance and shrinks, can burning ceramics bar draw ratio 10:1-50:1, and there will not be shrinkage cracking.
Beneficial effect
The invention has the advantages that can burning ceramics bar draw ratio 10:1-50:1, and there will not be shrinkage cracking.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
As shown in Figure 1, a kind of overlength ceramic rod blank sinters the method that porcelain process prevents blank from rupturing into, wherein kiln car objective table 1 is designed to the state with ground inclination, described kiln car objective table 1 is determined by the coefficient of friction of kiln car objective table 1 with ground inclination angle [alpha], and meet blank 2 gravity Fg equals blank 2 sliding-frictional resistance Fm along the component Fh that inclined plane obtains, then blank 2 is put on kiln car objective table 1 and carries out blank sintering.
The component Fh that described blank 2 gravity Fg obtains along inclined plane equals sliding-frictional resistance Fm, described sliding-frictional resistance Fm equals blank 2 gravity Fg is multiplied by blank 2 and kiln car objective table 1 coefficient of friction COEFFICIENT K to inclined-plane pressure Fy, described component Fh equals sliding-frictional resistance Fm, described sliding-frictional resistance Fm equals blank 2 gravity Fg and can obtain the coefficient of friction K that inclined-plane pressure Fy is multiplied by blank 2 and kiln car objective table 1: tg α=Fh/Fy=K, when component Fh equals sliding-frictional resistance Fm, blank is equivalent to zero resistance and shrinks, burning ceramics bar draw ratio after described blank sintering is 10:1-50:1, and there will not be shrinkage cracking.
During actual production, blank 2 is positioned on kiln car objective table 1, kiln car objective table and horizontal plane angle α.Blank 2 gravity Fg resolve into inclined-plane pressure Fy and along inclined-plane slip component Fh, Fy to inclined-plane exert pressure produce frictional force Fm
As Fh=Fm, blank 2 keeps inactive state;
Fm=kFy wherein k is blank 2 and kiln car objective table 1 coefficient of friction;
I.e. Fh=kFy,
Fh/Fy＝k，
When Fh/Fy=0.4 (aluminium oxide blank/mullite brick)
tgα＝Fh/Fy＝0.4
α＝22°
Namely kiln car objective table and horizontal plane angle α are 22 degree.
Claims (5)
1. an overlength ceramic rod blank sinters the method that porcelain process prevents blank from rupturing into, it is characterized in that: kiln car objective table (1) is designed to the state with ground inclination, described kiln car objective table (1) and ground inclination angle [alpha] are determined by the coefficient of friction of kiln car objective table (1), and meet blank (2) gravity Fg equals blank (2) sliding-frictional resistance Fm along the component Fh that inclined plane obtains, then blank (2) is put on kiln car objective table (1) and carries out blank sintering.
2. a kind of overlength ceramic rod blank according to claim 1 sinters the method that porcelain process prevents blank from rupturing into, it is characterized in that: the component Fh that described blank (2) gravity Fg obtains along inclined plane equals sliding-frictional resistance Fm.
3. a kind of overlength ceramic rod blank according to claim 2 sinters the method that porcelain process prevents blank from rupturing into, it is characterized in that: described sliding-frictional resistance Fm equals blank (2) gravity Fg is multiplied by blank (2) and kiln car objective table (1) coefficient of friction COEFFICIENT K to inclined-plane pressure Fy.
4. a kind of overlength ceramic rod blank according to claim 2 sinters the method that porcelain process prevents blank from rupturing into, it is characterized in that: described component Fh equals sliding-frictional resistance Fm, described sliding-frictional resistance Fm equals blank (2) gravity Fg and can obtain the coefficient of friction K that inclined-plane pressure Fy is multiplied by blank (2) and kiln car objective table (1): tg α=Fh/Fy=K.
5. a kind of overlength ceramic rod blank according to claim 1 sinters the method that porcelain process prevents blank from rupturing into, it is characterized in that: the burning ceramics bar draw ratio after described blank sintering is 10:1-50:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510922389.XA CN105546996A (en) | 2015-12-11 | 2015-12-11 | Method for preventing fracture of blanks during sintering ceramic forming of overlength ceramic rod blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510922389.XA CN105546996A (en) | 2015-12-11 | 2015-12-11 | Method for preventing fracture of blanks during sintering ceramic forming of overlength ceramic rod blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105546996A true CN105546996A (en) | 2016-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510922389.XA Pending CN105546996A (en) | 2015-12-11 | 2015-12-11 | Method for preventing fracture of blanks during sintering ceramic forming of overlength ceramic rod blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105546996A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091618A (en) * | 2016-06-06 | 2016-11-09 | 江西应陶康顺实业有限公司 | The support of a kind of base substrate for holding regular pottery, catalyst, catalyst carrier and method thereof |
| CN113277835A (en) * | 2020-02-20 | 2021-08-20 | 广州市尤特新材料有限公司 | Positioning tool and sintering method of planar target |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2187291Y (en) * | 1994-04-20 | 1995-01-11 | 夏吉夫 | Concave graphite sintering boat |
| JPH10213377A (en) * | 1997-01-29 | 1998-08-11 | Murata Mfg Co Ltd | Heat treatment furnace |
| CN105043103A (en) * | 2015-07-06 | 2015-11-11 | 上海卡贝尼精密陶瓷有限公司 | Super-long ceramic stick sintering furnace and using method thereof |
-
2015
- 2015-12-11 CN CN201510922389.XA patent/CN105546996A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2187291Y (en) * | 1994-04-20 | 1995-01-11 | 夏吉夫 | Concave graphite sintering boat |
| JPH10213377A (en) * | 1997-01-29 | 1998-08-11 | Murata Mfg Co Ltd | Heat treatment furnace |
| CN105043103A (en) * | 2015-07-06 | 2015-11-11 | 上海卡贝尼精密陶瓷有限公司 | Super-long ceramic stick sintering furnace and using method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091618A (en) * | 2016-06-06 | 2016-11-09 | 江西应陶康顺实业有限公司 | The support of a kind of base substrate for holding regular pottery, catalyst, catalyst carrier and method thereof |
| CN113277835A (en) * | 2020-02-20 | 2021-08-20 | 广州市尤特新材料有限公司 | Positioning tool and sintering method of planar target |
| CN113277835B (en) * | 2020-02-20 | 2022-10-11 | 广州市尤特新材料有限公司 | Positioning tool and sintering method of planar target |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |