CN114750265B - Ceramic rolling device and method - Google Patents
Ceramic rolling device and method Download PDFInfo
- Publication number
- CN114750265B CN114750265B CN202210378844.4A CN202210378844A CN114750265B CN 114750265 B CN114750265 B CN 114750265B CN 202210378844 A CN202210378844 A CN 202210378844A CN 114750265 B CN114750265 B CN 114750265B
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- Prior art keywords
- ceramic
- roll
- carbon
- press
- roller
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- 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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- 239000000919 ceramic Substances 0.000 title claims abstract description 120
- 238000005096 rolling process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 99
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 95
- 239000004744 fabric Substances 0.000 claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 238000003475 lamination Methods 0.000 claims abstract description 11
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 28
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 26
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 229910002113 barium titanate Inorganic materials 0.000 claims description 5
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 5
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 5
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 238000005245 sintering Methods 0.000 description 9
- 229910010293 ceramic material Inorganic materials 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000002468 ceramisation Methods 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- -1 etc.) Inorganic materials 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 2
- 239000011225 non-oxide ceramic Substances 0.000 description 2
- 229910052574 oxide ceramic Inorganic materials 0.000 description 2
- 239000011224 oxide ceramic Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
- B28B3/126—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material on material passing directly between the co-operating rollers
-
- 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
-
- 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
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
-
- 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
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/02—Ohmic resistance heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0004—Devices wherein the heating current flows through the material to be heated
-
- 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
-
- 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
Abstract
The embodiment of the invention discloses a ceramic rolling device and a ceramic rolling method, comprising the following steps: the roller press comprises a first pressing roller and a second pressing roller, a power supply for carrying out electrifying heating on the ceramic lamination piece, wherein a gap between the first pressing roller and the second pressing roller is used for placing ceramic so as to roll the electrifying heating ceramic lamination piece in the starting state of the roller press. By heating conductive heating materials such as carbon felt, carbon cloth and the like by electrifying, the purpose of quickly heating ceramics by using a very simple device and steps is realized by heating the materials arranged inside, so that the ceramics can be quickly heated to a temperature capable of plastically deforming in a few seconds.
Description
Technical Field
The embodiment of the invention relates to the technical field of materials, in particular to a ceramic rolling device and a ceramic rolling method.
Background
Ceramic materials are materials often used in daily production, and ceramics have a relatively high melting point, so that plastic deformation of the ceramic materials needs to be heated to a temperature close to the melting point, such as plastic deformation processing of hot stamping, hot extrusion and the like of the ceramic materials in a high-temperature furnace. A step of
However, most ceramic materials have a limited processing because they lack plastic deformation ability at normal temperature due to intrinsic properties such as chemical bonds of the materials, and cannot be processed like metals, and therefore, it is necessary to rapidly heat and roll the ceramic using equipment such as a high temperature furnace.
Disclosure of Invention
The embodiment of the invention provides a ceramic rolling device and a ceramic rolling method.
A ceramic roll-in apparatus comprising: the roller press comprises a first pressing roller and a second pressing roller, a power supply for carrying out electrifying heating on the ceramic lamination piece, wherein a gap between the first pressing roller and the second pressing roller is used for placing ceramic so as to roll the electrifying heating ceramic lamination piece in the starting state of the roller press.
Further, ceramic is placed between carbon cloths or carbon mats, and then the carbon cloths or carbon mats containing the ceramic are placed between alumina mats to form a ceramic laminate.
Further, the positive electrode and the negative electrode of the power supply are respectively connected with carbon cloth or carbon felt at two sides of the ceramics in the ceramic lamination.
Further, the size of the alumina felt is larger than the size of the carbon cloth or the carbon felt so that the ceramic does not contact the first press roller and the second press roller when the rolling is performed.
Further, the first press roller and the second press roller are silicon nitride rollers or aluminum oxide rollers.
Further, the gap spacing between the first press roller and the second press roller is 0-5mm, and the length is 50-150mm.
The ceramic rolling method is applied to the ceramic rolling device, wherein the ceramic rolling method comprises the following steps:
placing ceramic between carbon cloth or carbon felt, and placing carbon cloth or carbon felt containing ceramic between alumina felts to form ceramic laminated piece;
placing the ceramic lamination in a gap between the first compression roller and the second compression roller, and starting a power supply to electrify and heat the carbon cloth or the carbon felt;
and when the temperature of the carbon cloth or the carbon felt reaches a preset temperature, starting a roller press to extrude the ceramic laminated piece.
Further, the method further comprises the following steps: the rotational speed of the roll squeezer is 0-20 revolutions per minute when the ceramic laminate is pressed.
Further, the ceramic in the ceramic laminate is at least one of zirconia, alumina, bismuth oxide, barium titanate, silicon nitride, or silicon carbide, for example.
Further, the method further comprises the following steps: the heating temperature is changed by adjusting the thickness, the size or the size of the electrified current of the carbon cloth/carbon felt.
The embodiment of the invention has the beneficial effects that: the invention relates to a rapid sintering method, namely a method for heating conductive heating materials such as carbon felt, carbon cloth and the like by electrifying and heating the materials placed in the rapid sintering method. The rapid sintering method can heat the carbon felt/carbon cloth by only adding a direct current power supply at two ends of the carbon cloth/carbon felt and loading current. Different heating temperatures can be obtained by adjusting the resistance (by adjusting the size and thickness) and the current magnitude of the carbon cloth/carbon felt. It has achieved sintering of oxide ceramics (e.g., zirconia, alumina, bismuth oxide, etc.), multi-component ceramics (e.g., barium titanate, etc.), and non-oxide ceramics (e.g., silicon nitride, silicon carbide, etc.), rapid densification of the ceramic from the green body, and pyrolysis of precursor ceramics (e.g., siCO), rapid ceramization of the polymer. The invention utilizes the rapid sintering technology to realize the purpose of rapidly heating the ceramic by using a very simple device and steps, so that the ceramic can be rapidly heated to the temperature capable of plastically deforming in a few seconds.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a ceramic rolling device according to an embodiment of the present invention.
Detailed Description
In order to enable those skilled in the art to better understand the present invention, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, a ceramic roll-in apparatus includes: the roller press comprises a first pressing roller and a second pressing roller, a power supply for carrying out electrifying heating on the ceramic lamination piece, wherein a gap between the first pressing roller and the second pressing roller is used for placing ceramic so as to roll the electrifying heating ceramic lamination piece in the starting state of the roller press.
In this embodiment, the ceramic is placed between carbon cloths or carbon mats, and then the carbon cloths or carbon mats containing the ceramic are placed between alumina mats to form a ceramic laminate. And connecting the anode and the cathode of the power supply with carbon cloth or carbon felt at two sides of the ceramics in the ceramic lamination. Wherein the size of the alumina felt is larger than the size of the carbon cloth or the carbon felt so that the ceramic does not contact the first press roller and the second press roller when the rolling is performed.
In this embodiment, in the rolling process, the vertically placed ceramics are rolled by the front and rear press rollers. Wherein, the distance between the double rollers of the precise roller press is 0-5mm, and the precision is +/-0.1 mm; the length of the press roller is 50-150mm. The first press roller and the second press roller are made of insulating ceramics, such as silicon nitride rollers or aluminum oxide rollers, and the dimensional accuracy is +/-0.02 mm. The rotating speed of the roller press is 0-20 rpm. If a large or thick ceramic product is required to be rolled, parameters such as the size of the ceramic, the length of a press roll, the distance between the press rolls, the power of a roll press and the like are enlarged, and the size precision of the press rolls are adjusted.
The embodiment of the invention also provides a ceramic rolling method which is applied to the ceramic rolling device, wherein the ceramic rolling method comprises the following steps:
firstly, placing ceramic between carbon cloth or carbon felt, and placing the carbon cloth or carbon felt containing the ceramic between alumina felts to form a ceramic laminated piece;
placing the ceramic laminated piece in a gap between the first compression roller and the second compression roller, and starting a power supply to electrify and heat the carbon cloth or the carbon felt;
and thirdly, starting a roller press when the temperature of the carbon cloth or the carbon felt reaches a preset temperature, and extruding the ceramic laminated piece.
Specifically, the rolling process further comprises: the rotational speed of the roll squeezer is 0-20 revolutions per minute when the ceramic laminate is pressed. Wherein the ceramic in the ceramic laminate is at least one of zirconia, alumina, bismuth oxide, barium titanate, silicon nitride, or silicon carbide, for example. The heating temperature is changed by adjusting the thickness, the size or the size of the electrified current of the carbon cloth/carbon felt.
The ceramic is placed between two carbon cloths or carbon felts and then placed between two alumina felts with larger sizes, so that the carbon cloths or carbon felts do not directly contact the ceramic roller. And then the laminated structure of alumina felt-carbon cloth (carbon felt) -ceramic piece-carbon cloth (carbon felt) -alumina felt is integrally put between two ceramic rollers of a roller press, and the distance between the two ceramic rollers is adjusted to make the ceramic rollers contact with the pressing rollers. Then, the carbon cloth or the carbon felt is electrified, the temperature of the carbon cloth or the carbon felt can be quickly increased, and the temperature increasing speed and the final temperature are controlled by the magnitude of the applied current. And starting a roller press, and extruding and slowly pushing the laminated structure of the alumina felt-carbon cloth (carbon felt) -ceramic piece-carbon cloth (carbon felt) -alumina felt. The distance between the two rollers is slowly adjusted according to the requirement, so that the ceramic plate obtains larger plastic deformation. And stopping the rotation of the press roller. And the current for heating the carbon cloth or the carbon felt is cut off. And waiting for the temperature to drop to be close to the room temperature, and taking out the ceramic component.
The embodiment of the invention relates to a rapid sintering method, namely a method for heating conductive heating materials such as carbon felt, carbon cloth and the like by electrifying and heating the materials arranged inside. The rapid sintering method can heat the carbon felt/carbon cloth by only adding a direct current power supply at two ends of the carbon cloth/carbon felt and loading current. Different heating temperatures can be obtained by adjusting the resistance (by adjusting the size and thickness) and the current magnitude of the carbon cloth/carbon felt. It has achieved sintering of oxide ceramics (e.g., zirconia, alumina, bismuth oxide, etc.), multi-component ceramics (e.g., barium titanate, etc.), and non-oxide ceramics (e.g., silicon nitride, silicon carbide, etc.), rapid densification of the ceramic from the green body, and pyrolysis of precursor ceramics (e.g., siCO), rapid ceramization of the polymer. The invention utilizes the rapid sintering technology to realize the purpose of rapidly heating the ceramic by using a very simple device and steps, so that the ceramic can be rapidly heated to the temperature capable of plastically deforming in a few seconds.
Example 1
And rolling the vertically placed ceramic by utilizing a front pressing roller and a rear pressing roller in the ceramic rolling device. The compression roller is made of silicon nitride ceramics, and the dimensional accuracy is +/-0.02 mm. The distance between the two rollers of the roller press is adjustable and is 0-5mm, and the precision is +/-0.1 mm. The length of the press roll was 100mm. The rotating speed of the roller press is 0-10 rpm. The ceramic to be rolled is a zirconia ceramic plate, and the purpose of the ceramic plate is to roll the zirconia ceramic plate to generate plastic deformation, reduce the thickness and change the length and the width along with the plastic deformation. The specific method comprises the following steps:
1. the zirconia was placed between two carbon cloths and then between two larger size alumina felts so that the carbon cloths did not directly contact the ceramic roller. The zirconia plate size is 10×1×100mm; the carbon cloth is 20mm wide and 150mm wide, and can wrap the zirconia plate; the alumina felt was 40mm wide.
2. The laminated structure of alumina felt, carbon cloth, zirconia ceramic plate, carbon cloth and alumina felt is integrally put between two ceramic rollers of a roller press, and the distance between the rollers is adjusted to make the rollers contact with the rollers.
3. The carbon cloth was energized, and a current of 20A was applied thereto, so that the light-emitting and heat-generating state of the carbon cloth was observed through the alumina felt. The temperature was observed with an infrared thermometer and was approximately 1400 degrees celsius. And starting the roller press, and extruding and slowly pushing the laminated structure of the alumina felt, the carbon cloth, the zirconia ceramic plate, the carbon cloth and the alumina felt.
4. The distance between the two rollers is slowly adjusted according to the requirement, so that the zirconia ceramic plate obtains larger plastic deformation.
5. And stopping the rotation of the press roller. And the current for heating the carbon cloth is cut off. And (5) waiting for the temperature to be reduced to be close to the room temperature, and taking out the rolled and thinned zirconia ceramic plate.
The foregoing is only a partial embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (9)
1. A ceramic roll-in apparatus, comprising: a roller press including a first roller and a second roller, a power supply for electrically heating the ceramic laminate, wherein a gap between the first roller and the second roller is used for placing ceramic so as to roll the electrically heated ceramic laminate in an on state of the roller press;
wherein, the ceramic is arranged between carbon cloth or carbon felt, and then the carbon cloth or carbon felt containing the ceramic is arranged between alumina felts to form a ceramic lamination.
2. The ceramic roll-in device according to claim 1, wherein the positive and negative electrodes of the power supply are connected to carbon cloth or carbon felt on both sides of the ceramic in the ceramic laminate, respectively.
3. The ceramic roll press apparatus of claim 1, wherein the alumina felt has a size greater than the carbon cloth or felt so that the ceramic does not contact the first and second press rolls when the roll press is performed.
4. The roll pressing apparatus of claim 1, wherein the first press roll and the second press roll are silicon nitride rolls or aluminum oxide rolls.
5. The roll press apparatus as claimed in claim 1, wherein the gap spacing between the first press roll and the second press roll is 0 to 5mm and the length is 50 to 150mm.
6. A ceramic rolling method, characterized by being applied to the ceramic rolling device of claim 1, wherein the ceramic rolling method comprises:
placing ceramic between carbon cloth or carbon felt, and placing carbon cloth or carbon felt containing ceramic between alumina felts to form ceramic laminated piece;
placing the ceramic lamination in a gap between the first compression roller and the second compression roller, and starting a power supply to electrify and heat the carbon cloth or the carbon felt;
and when the temperature of the carbon cloth or the carbon felt reaches a preset temperature, starting a roller press to extrude the ceramic laminated piece.
7. The ceramic roll pressing method according to claim 6, further comprising: the rotational speed of the roll squeezer is 0-20 revolutions per minute when the ceramic laminate is pressed.
8. The ceramic roll method according to claim 6, wherein the ceramic in the ceramic laminate is at least one of zirconia, alumina, bismuth oxide, barium titanate, silicon nitride, or silicon carbide.
9. The ceramic roll pressing method according to claim 6, further comprising: the heating temperature is changed by adjusting the thickness, the size or the size of the electrified current of the carbon cloth/carbon felt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210378844.4A CN114750265B (en) | 2022-04-12 | 2022-04-12 | Ceramic rolling device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210378844.4A CN114750265B (en) | 2022-04-12 | 2022-04-12 | Ceramic rolling device and method |
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| Publication Number | Publication Date |
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| CN114750265A CN114750265A (en) | 2022-07-15 |
| CN114750265B true CN114750265B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3257268A (en) * | 1962-02-13 | 1966-06-21 | Mead Corp | Paper pressing process and apparatus utilizing water receiving belt |
| CN206030712U (en) * | 2016-07-05 | 2017-03-22 | 日志动力传送***（上海）有限公司 | A production facility for conveyer belt |
| CN109468480A (en) * | 2018-11-26 | 2019-03-15 | 太原理工大学 | The method that the vacuum canning rolling of impulse electric field auxiliary prepares metal-base composites |
| CN112404449A (en) * | 2020-10-23 | 2021-02-26 | 中国科学技术大学 | Device and method for continuously synthesizing powder material based on thermal shock |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT9339U1 (en) * | 2006-07-06 | 2007-08-15 | Plansee Se | METHOD FOR PRODUCING AN EXTRUDED FORM BODY |
-
2022
- 2022-04-12 CN CN202210378844.4A patent/CN114750265B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3257268A (en) * | 1962-02-13 | 1966-06-21 | Mead Corp | Paper pressing process and apparatus utilizing water receiving belt |
| CN206030712U (en) * | 2016-07-05 | 2017-03-22 | 日志动力传送***（上海）有限公司 | A production facility for conveyer belt |
| CN109468480A (en) * | 2018-11-26 | 2019-03-15 | 太原理工大学 | The method that the vacuum canning rolling of impulse electric field auxiliary prepares metal-base composites |
| CN112404449A (en) * | 2020-10-23 | 2021-02-26 | 中国科学技术大学 | Device and method for continuously synthesizing powder material based on thermal shock |
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| CN114750265A (en) | 2022-07-15 |
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