CN113815091A - Grouting process - Google Patents
Grouting process Download PDFInfo
- Publication number
- CN113815091A CN113815091A CN202110871050.7A CN202110871050A CN113815091A CN 113815091 A CN113815091 A CN 113815091A CN 202110871050 A CN202110871050 A CN 202110871050A CN 113815091 A CN113815091 A CN 113815091A
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- China
- Prior art keywords
- mold
- blank
- grouting
- slurry
- centrifuge
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002002 slurry Substances 0.000 claims abstract description 38
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 229910052602 gypsum Inorganic materials 0.000 claims description 10
- 239000010440 gypsum Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 238000007569 slipcasting Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 abstract description 4
- 238000005119 centrifugation Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/20—Producing shaped prefabricated articles from the material by centrifugal or rotational casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
- B28B1/265—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/22—Apparatus or processes for treating or working the shaped or preshaped articles for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
The invention relates to the technical field of ceramic forming and discloses a grouting process, which comprises the following steps: step one, slurry preparation: mixing and stirring various raw materials uniformly according to a ratio to prepare raw material slurry; step two, assembling a die: selecting a corresponding mold, closing the mold, and then integrally installing and fixing the mold on a rotary table of a centrifuge; step three, grouting: injecting the raw material slurry prepared in the step one into the cavity of the die in the step two through compressed air pressurizing equipment; step four, centrifugal exhaust: s1, separating a grouting opening of the mold from compressed air pressurizing equipment, and sealing the grouting opening of the mold. According to the grouting process, the compactness of the blank can be greatly improved by combining pressure grouting and centrifugation, air bubbles and air holes in the blank can be reduced, and the quality of the prepared blank is effectively improved.
Description
Technical Field
The invention relates to the technical field of ceramic forming, in particular to a grouting process.
Background
Slip casting is based on the physical property that a porous gypsum mold can absorb moisture, ceramic powder is prepared into slurry with fluidity and then injected into the porous mold (mainly a gypsum mold), a uniform mud layer with certain thickness is formed after the moisture is absorbed by the mold (gypsum), and a blank with certain strength is formed in the dehydration and drying process, so that the slip casting is called as slip casting.
At present, in order to improve the compactness of a blank and shorten the grouting time, compressed air is adopted to press slurry into a model in a common method, but the slurry and the air in a cavity and the method of adopting the compressed air to perform pressure grouting can cause that the blank after being formed contains air holes, air bubbles and the like, and the quality of the prepared blank is seriously influenced, so that the grouting process is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a grouting process, which has the advantages of improving the compactness of a blank, reducing the generation of internal air holes and air bubbles, greatly improving the quality of the prepared blank and the like, and solves the problem that the quality of the prepared blank is seriously influenced because the air in slurry and a cavity and the pressure grouting method by adopting compressed air can cause the air holes, the air bubbles and the like in the molded blank.
(II) technical scheme
In order to achieve the purposes of improving the density of the blank, reducing the generation of internal air holes and air bubbles and greatly improving the quality of the prepared blank, the invention provides the following technical scheme: the grouting process comprises the following steps:
step one, slurry preparation
Mixing and stirring various raw materials uniformly according to a ratio to prepare raw material slurry;
step two, assembling the die
Selecting a corresponding mold, closing the mold, and then integrally installing and fixing the mold on a rotary table of a centrifuge;
step three, grouting
Injecting the raw material slurry prepared in the step one into the cavity of the die in the step two through compressed air pressurizing equipment;
step four, centrifugal exhaust
S1, separating a grouting opening of a mold from compressed air pressurizing equipment, and sealing the grouting opening of the mold;
s2, starting the centrifuge in the step II, enabling the mold with the sealed injection port in the step S1 to rotate along with a rotating disc of the centrifuge, stopping the centrifuge after rotating for a certain time, and opening the injection port in the step S1.
Step five, drying
Waiting for a certain time to completely dry and form the slurry in the die in the fourth step;
step six, demolding
Opening the mold in the fifth step, and taking out the blank;
step seven, washing the blank
And cleaning the blank prepared in the step six inside and outside once through clear water.
Preferably, in the step S1, after the mold injection port is separated from the compressed air pressurizing device, the excess slurry inside the mold injection port may be discharged and sealed, and the discharged excess slurry may be stored at a fixed point without mixing with impurities such as gypsum chips.
Preferably, said seventh step requires finishing the inner and outer surfaces of the blank by means of a dedicated finishing tool before cleaning.
Preferably, the rotation speed of the centrifuge in the S2 is 2500r/min-3500 r/min.
Preferably, the steps 1 to seven are carried out in a room, the temperature in the room is more than or equal to 28 ℃, and good ventilation in the room is kept.
Preferably, the mold selected in the second step cannot be an aging mold, and in the second step, before the mold is closed, the mold cavity in the mold needs to be inspected to clean particle impurities, mold release agents and the like on the mold cavity.
Preferably, the raw slurry prepared in the first step needs to be stored at a fixed point, and impurities such as gypsum chips and the like are not mixed in the raw slurry.
Preferably, when the compressed air pressurizing equipment in the third step presses the raw material slurry into the cavity, the pressure in the cavity is kept between 0.7MPa and 1.6MPa for 1 to 3 min.
(III) advantageous effects
Compared with the prior art, the invention provides a grouting process, which has the following beneficial effects:
1. the grouting process technology can complete ceramic grouting forming through mutual matching of the first step, the second step, the third step, the fifth step and the sixth step, the density of a blank can be improved through pressurized grouting in the third step, grouting time is shortened, the generation of air holes and air bubbles in the blank can be reduced through the fourth step, the density of the blank is further increased, the quality of the prepared blank is greatly improved, the prepared blank can be cleaned through the seventh step, the surface of the prepared blank is kept at a certain degree of wetness, cracks are avoided, and foreign matters on the surface of the blank can be cleaned.
2. According to the grouting process, excessive slurry is discharged before sealing, the slurry waste can be reduced, the convenience of subsequent demolding is improved, the overall attractiveness of the blank can be improved by trimming the surface of the blank before cleaning, the indoor temperature is set to be more than or equal to 28 ℃, and good indoor ventilation is kept, so that the drying efficiency can be ensured.
Drawings
Fig. 1 is a process diagram of a grouting process proposed by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the grouting process includes the following steps:
step one, slurry preparation
Mixing and stirring various raw materials uniformly according to a ratio to prepare raw material slurry;
step two, assembling the die
Selecting a corresponding mold, closing the mold, and then integrally installing and fixing the mold on a rotary table of a centrifuge;
step three, grouting
Injecting the raw material slurry prepared in the step one into the cavity of the die in the step two through compressed air pressurizing equipment;
step four, centrifugal exhaust
S1, separating a grouting opening of a mold from compressed air pressurizing equipment, and sealing the grouting opening of the mold;
s2, starting the centrifuge in the step II, enabling the mold with the sealed injection port in the step S1 to rotate along with a rotating disc of the centrifuge, stopping the centrifuge after rotating for a certain time, and opening the injection port in the step S1.
Step five, drying
Waiting for a certain time to completely dry and form the slurry in the die in the fourth step;
step six, demolding
Opening the mold in the fifth step, and taking out the blank;
step seven, washing the blank
And cleaning the blank prepared in the step six inside and outside once through clear water.
In the step S1, after the mold injection port is separated from the compressed air pressurization device, the excess slurry inside the mold injection port can be discharged and then sealed, the discharged excess slurry is stored at a fixed point without mixing with impurities such as gypsum chips, and the excess slurry is discharged before sealing, so that the slurry waste can be reduced, and the convenience of subsequent demolding is improved.
Step seven, before cleaning, the inner and outer surfaces of the blank need to be finished through a special finishing tool, so that the overall aesthetic degree of the blank can be improved.
And the rotation speed of the centrifuge in the S2 is 2500r/min-3500r/min, so that the centrifugation effect is ensured.
The steps I to seventh are carried out indoors, the indoor temperature is more than or equal to 28 ℃, good ventilation in the room is kept, and the drying efficiency can be ensured.
And in the second step, the selected mould cannot be an aging mould, and before the mould is closed, the mould cavity in the mould needs to be checked, particle impurities, a release agent and the like on the mould cavity are cleaned, and the problems of surface defect, bulge and the like of a blank manufactured after the mould is grouted are prevented.
The raw material slurry prepared in the first step needs to be stored at a fixed point, so that impurities such as gypsum chips and the like cannot be mixed, and the influence of the impurities such as the gypsum chips on the raw material slurry is prevented.
And in the third step, when the raw material slurry is pressed into the cavity by the compressed air pressurizing equipment, the pressure in the cavity is kept between 0.7MPa and 1.6MPa for 1 to 3 minutes, so that the compactness of the blank can be improved and the grouting time can be shortened by pressure grouting.
In conclusion, the grouting process technology can smoothly complete slurry preparation, mold assembly and grouting work during use, pressure grouting is carried out through compressed air pressurization equipment, the density of a blank can be improved, the grouting time is shortened, air in the blank can be extruded out through centrifugal force through centrifugal exhaust, air holes and air bubbles in the blank can be reduced, the density of the blank is further increased, the quality of the prepared blank is greatly improved, the blank can be prepared through drying and demolding processes, and finally the blank washing process can keep a certain degree of wetness on the surface of the blank, so that cracks are avoided, and foreign matters on the surface of the blank can be cleaned.
It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The grouting process is characterized by comprising the following steps:
step one, slurry preparation
Mixing and stirring various raw materials uniformly according to a ratio to prepare raw material slurry;
step two, assembling the die
Selecting a corresponding mold, closing the mold, and then integrally installing and fixing the mold on a rotary table of a centrifuge;
step three, grouting
Injecting the raw material slurry prepared in the step one into the cavity of the die in the step two through compressed air pressurizing equipment;
step four, centrifugal exhaust
S1, separating a grouting opening of a mold from compressed air pressurizing equipment, and sealing the grouting opening of the mold;
s2, starting the centrifuge in the step II, enabling the mold with the sealed injection port in the step S1 to rotate along with a turntable of the centrifuge, stopping the centrifuge after rotating for a certain time, and opening the injection port in the step S1;
step five, drying
Waiting for a certain time to completely dry and form the slurry in the die in the fourth step;
step six, demolding
Opening the mold in the fifth step, and taking out the blank;
step seven, washing the blank
And cleaning the blank prepared in the step six inside and outside once through clear water.
2. The slip casting process according to claim 1, wherein: in the step S1, after the mold injection port is separated from the compressed air pressurizing device, the excess slurry inside the mold injection port may be discharged and sealed, and the discharged excess slurry may be stored at a fixed point without mixing with impurities such as gypsum chips.
3. The slip casting process according to claim 1, wherein: step seven requires finishing the inner and outer surfaces of the blank by means of special finishing tools before cleaning.
4. The slip casting process according to claim 1, wherein: and the rotation speed of the centrifuge in the S2 is 2500r/min-3500 r/min.
5. The slip casting process according to claim 1, wherein: the steps one to seven are carried out indoors, the temperature in the room is more than or equal to 28 ℃, and good ventilation in the room is kept.
6. The slip casting process according to claim 1, wherein: and in the second step, the selected mould cannot be an aging mould, and before the mould is closed, the mould cavity in the mould needs to be checked, and particle impurities, a release agent and the like on the mould cavity are cleaned.
7. The slip casting process according to claim 1, wherein: the raw material slurry prepared in the first step needs to be stored at a fixed point, and impurities such as gypsum chips and the like cannot be mixed.
8. The slip casting process according to claim 1, wherein: and in the third step, when the raw material slurry is pressed into the die cavity by the compressed air pressurizing equipment, the pressure in the die cavity is kept between 0.7 and 1.6MPa for 1 to 3 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871050.7A CN113815091A (en) | 2021-07-30 | 2021-07-30 | Grouting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871050.7A CN113815091A (en) | 2021-07-30 | 2021-07-30 | Grouting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113815091A true CN113815091A (en) | 2021-12-21 |
Family
ID=78924105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110871050.7A Pending CN113815091A (en) | 2021-07-30 | 2021-07-30 | Grouting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113815091A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2279840A1 (en) * | 2009-07-30 | 2011-02-02 | Sacmi Cooperativa Meccanici Imola Societa' Cooperative | Method for the manufacture of a ceramic product and plant implementing the method. |
| CN104493968A (en) * | 2014-12-26 | 2015-04-08 | 华中科技大学 | Method for preparing tubular ceramic blank body |
| CN104827558A (en) * | 2015-06-08 | 2015-08-12 | 唐山瑞祈陶瓷科技开发有限公司 | Domestic ceramic grouting production method and device |
| CN206048451U (en) * | 2016-09-26 | 2017-03-29 | 德化恒忆陶瓷艺术股份有限公司 | A kind of rotary and centrifugal type grouting equipment |
| CN106985261A (en) * | 2017-04-07 | 2017-07-28 | 中国船舶重工集团公司第七二五研究所 | The centrifugal pressure method of ITO rotary target base substrate one sides and mould |
| CN107520944A (en) * | 2017-09-22 | 2017-12-29 | 九牧厨卫股份有限公司 | A kind of ceramic body vacuum injection technique |
| CN213766452U (en) * | 2020-08-20 | 2021-07-23 | 江西省一诺陶瓷有限公司 | Slip casting device is used in production of pottery lid |
-
2021
- 2021-07-30 CN CN202110871050.7A patent/CN113815091A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2279840A1 (en) * | 2009-07-30 | 2011-02-02 | Sacmi Cooperativa Meccanici Imola Societa' Cooperative | Method for the manufacture of a ceramic product and plant implementing the method. |
| CN104493968A (en) * | 2014-12-26 | 2015-04-08 | 华中科技大学 | Method for preparing tubular ceramic blank body |
| CN104827558A (en) * | 2015-06-08 | 2015-08-12 | 唐山瑞祈陶瓷科技开发有限公司 | Domestic ceramic grouting production method and device |
| CN206048451U (en) * | 2016-09-26 | 2017-03-29 | 德化恒忆陶瓷艺术股份有限公司 | A kind of rotary and centrifugal type grouting equipment |
| CN106985261A (en) * | 2017-04-07 | 2017-07-28 | 中国船舶重工集团公司第七二五研究所 | The centrifugal pressure method of ITO rotary target base substrate one sides and mould |
| CN107520944A (en) * | 2017-09-22 | 2017-12-29 | 九牧厨卫股份有限公司 | A kind of ceramic body vacuum injection technique |
| CN213766452U (en) * | 2020-08-20 | 2021-07-23 | 江西省一诺陶瓷有限公司 | Slip casting device is used in production of pottery lid |
Non-Patent Citations (1)
| Title |
|---|
| 陈达谦: "工业陶瓷成型新技术介绍", 《现代技术陶瓷》 * |
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Application publication date: 20211221 |
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