CN115284412A - Device and method for calibrating ceramic matrix composite workpiece based on RMI method - Google Patents
Device and method for calibrating ceramic matrix composite workpiece based on RMI method Download PDFInfo
- Publication number
- CN115284412A CN115284412A CN202210879750.5A CN202210879750A CN115284412A CN 115284412 A CN115284412 A CN 115284412A CN 202210879750 A CN202210879750 A CN 202210879750A CN 115284412 A CN115284412 A CN 115284412A
- Authority
- CN
- China
- Prior art keywords
- clamping plate
- workpiece
- axis direction
- ceramic matrix
- matrix composite
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 74
- 239000011153 ceramic matrix composite Substances 0.000 title claims abstract description 42
- 239000011812 mixed powder Substances 0.000 claims abstract description 27
- 239000007770 graphite material Substances 0.000 claims description 6
- 229910052582 BN Inorganic materials 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005475 siliconizing Methods 0.000 description 1
- 230000008646 thermal stress Effects 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
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
-
- 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
- B28B17/02—Conditioning the material prior to shaping
- B28B17/026—Conditioning ceramic materials
-
- 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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
- C04B35/573—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained by reaction sintering or recrystallisation
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/616—Liquid infiltration of green bodies or pre-forms
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a device and a method for correcting a ceramic matrix composite workpiece based on an RMI method, and aims to solve the technical problem that a thin-wall flat plate is easy to generate thermal deformation in the process of preparing a ceramic matrix composite by the RMI method, so that the difficulty in processing and assembling the thin-wall flat plate is high. The calibrating device comprises a plurality of clamping plate groups arranged in parallel and two supporting seats; the clamping plate group comprises at least three clamping plates, namely an upper clamping plate, a lower clamping plate and at least one middle clamping plate; the flat workpiece penetrates through each clamping plate group along the Y-axis direction, and is clamped by two adjacent clamping plates in each clamping plate group. The method comprises the following steps: 1. arranging a supporting seat and installing a lower clamping plate; 2. adding the mixed powder; 3. continuously adding mixed powder after the flat workpiece is installed; 4. continuously adding the mixed powder after the middle clamping plate is installed; 5; continuously arranging the flat plate workpiece; 6. and continuously installing a middle clamping plate or arranging an upper clamping plate and adding the mixed powder until the model correction is completed.
Description
Technical Field
The invention relates to a device for calibrating a ceramic matrix composite flat plate, in particular to a device and a method for calibrating a ceramic matrix composite workpiece based on an RMI method.
Background
The preparation method of the silicon carbide ceramic matrix composite mainly comprises a chemical vapor deposition (CVI) method, a precursor organic Polymer Impregnation Pyrolysis (PIP) method and a melt siliconizing (RMI) method. The CVI method is a very complex process, the process equipment is complex and difficult to control, and the production period is long; although the PIP method has simple process equipment, the production period is long, and the densification degree of the matrix is low; the RMI method has short preparation period, low cost and low residual porosity, but is easy to seriously damage fibers. Therefore, after a certain amount of pyrolytic carbon and a silicon carbide matrix are prepared by the CVI method, the RMI method is adopted, and elemental silicon is introduced into the silicon carbide ceramic matrix composite under the action of capillary force, so that the rapid preparation of the ceramic matrix composite can be realized on the premise that fibers are hardly damaged. However, in the process of adopting the RMI method, the thermal expansion coefficients of the phases are not consistent in the material system of the ceramic matrix composite, so that for a thin-wall flat plate, the occurrence of thermal deformation is difficult to avoid in a natural state, which causes great processing difficulty, difficult assembly and even scrapping of parts.
Disclosure of Invention
The invention aims to solve the technical problems that in the process of preparing a ceramic matrix composite material by adopting an RMI method, fibers are easy to be seriously damaged, or a thin-wall flat plate is easy to generate thermal deformation, so that the processing and assembling difficulty of the thin-wall flat plate is increased, and even parts are scrapped, and provides a device and a method for preparing a ceramic matrix composite material workpiece based on the RMI method.
The technical scheme of the invention is as follows:
a type calibration device for preparing a ceramic matrix composite workpiece based on an RMI method is characterized in that:
the device comprises a plurality of clamping plate groups arranged in parallel and two supporting seats;
one end of each clamping plate group arranged in parallel is detachably connected with one supporting seat, and the other end of each clamping plate group is detachably connected with the other supporting seat;
each clamping plate group comprises at least three clamping plates, wherein the at least three clamping plates are an upper clamping plate, a lower clamping plate and at least one middle clamping plate; one side of the lower clamping plate is provided with a plurality of limiting teeth, and the limiting teeth of the lower clamping plate are upward; at least one side of the upper clamping plate is provided with a plurality of limiting teeth, and the limiting teeth on one side face downwards; the upper side and the lower side of the middle clamping plate are both provided with a plurality of limiting teeth;
an overflow groove is arranged between the adjacent limiting teeth;
defining: the extending direction along the length of the clamping plate is an X-axis direction, the vertical arrangement direction along the clamping plate is a Z-axis direction, the X-axis direction is vertical to the Z-axis direction, and the direction which passes through the intersection point of the X-axis direction and the Z-axis direction and is vertical to the X-axis direction and the Z-axis direction is a Y-axis direction;
the flat workpiece penetrates through each clamping plate group along the Y-axis direction and is clamped by two adjacent clamping plates in each clamping plate group;
the distance between every two adjacent clamping plate groups in the Y-axis direction is 100-150 mm.
Furthermore, the end face, used for being abutted to the flat plate workpiece, of the limiting tooth is a clamping face, and the clamping face is a plane;
the length of the clamping surface of the limiting tooth along the X-axis direction is 5-10 mm; the height of the limiting teeth along the Z-axis direction is 5-10 mm;
the length of the overflow groove along the X-axis direction is 10-20 mm.
Further, the height of the upper clamping plate, the height of the lower clamping plate and the height of each middle clamping plate are the same along the Z-axis direction.
Furthermore, the lower clamping plate, the upper clamping plate and the middle clamping plate are all made of C/C composite materials or high-strength graphite materials;
the thicknesses of the lower clamping plate, the upper clamping plate and the middle clamping plate in the Y-axis direction are all 5-8 mm.
Furthermore, the clamping surface of the limiting tooth is coated with boron nitride;
the supporting seat is made of high-strength graphite materials.
Furthermore, one side of the lower clamping plate, the upper clamping plate and the middle clamping plate, which is provided with the limiting teeth, is a working side;
two supporting bulges are arranged at two ends of the working side of the clamping plate, and each limiting tooth is positioned between the two corresponding supporting bulges at the working side; the supporting protrusion is higher than the limiting teeth in the Z-axis direction;
in two adjacent clamping plates of the same clamping plate group, the supporting protrusions of the lower clamping plate support the supporting protrusions of the upper clamping plate, a gap for accommodating a flat workpiece is formed between the working side of the upper clamping plate and the working side of the lower clamping plate, and the height of the gap along the Z-axis direction is 0.95-1.05 times of the thickness of the workpiece.
Furthermore, the supporting seat is provided with clamping grooves which correspond to the clamping plate groups one to one, and the end parts of the clamping plate groups in the X-axis direction are inserted into the clamping grooves, so that the clamping plate groups and the supporting seat can be detachably connected.
Further, the height of the gap in the Z-axis direction is the same as the thickness of the workpiece.
Meanwhile, the invention also provides a method for preparing the ceramic matrix composite workpiece based on the RMI method, which is characterized in that the device for preparing the ceramic matrix composite workpiece based on the RMI method comprises the following steps:
s1, placing a supporting seat in a crucible, and installing a lower clamping plate in a plurality of clamping plate groups into the supporting seat, wherein limiting teeth of the lower clamping plate face upwards;
s2, adding the mixed powder used by the RMI method into the crucible until the mixed powder is flush with the upper surface of the limiting tooth of the lower clamping plate;
s3, placing the flat plate workpiece on the limiting teeth of the lower clamping plate and enabling the flat plate workpiece to be abutted to the upper surfaces of the limiting teeth of the lower clamping plate, so that the lower surface of the flat plate workpiece is enabled to be in complete contact with the mixed powder;
s4, installing a middle clamping plate, wherein the lower surface of a limiting tooth on the lower side of the middle clamping plate is abutted to the upper surface of the flat workpiece, and continuously adding the mixed powder until the mixed powder is flush with the upper surface of the limiting tooth on the upper side of the middle clamping plate;
s5, continuously arranging the flat workpiece, and enabling the lower surface of the flat workpiece to be abutted to the upper surface of the limiting tooth on the upper side of the middle clamping plate;
s6, repeating the steps S4 and S5, and installing the rest middle clamping plates and the flat plate workpiece positioned on the upper side of the middle clamping plates;
s7, mounting an upper clamping plate on the upper surface of the uppermost flat plate workpiece in the step S6, enabling the lower surface of the limiting tooth on the lower side of the upper clamping plate to be abutted to the upper surface of the flat plate workpiece, continuously adding the mixed powder until the mixed powder is flush with the upper surface of the upper clamping plate, completing the model correction of the ceramic matrix composite workpiece prepared based on the RMI method, and starting the RMI process.
Further, in step S6, before the RMI process is started, a layer of graphite paper is laid on the upper surface of the upper clamping plate.
The invention has the beneficial effects that:
1. according to the device for calibrating the ceramic matrix composite workpiece prepared based on the RMI method, the plurality of clamping plates are arranged in the Z-axis direction, and the preparation of a plurality of ceramic matrix composite flat workpieces by the RMI method is realized at the same time, so that the preparation efficiency is high.
2. According to the ceramic matrix composite flat workpiece fixing device, the ceramic matrix composite flat workpiece is fixed through the limiting teeth of the adjacent clamping plates, and the flat workpiece is prevented from being deformed due to thermal stress in an RMI process; based on the point contact mode of the limiting teeth and the flat workpiece, and boron nitride is adopted for isolation protection of the contact part, the damage to the ceramic matrix composite flat workpiece caused by the fact that the sizing device is bonded with the flat workpiece together after powder is melted in the RMI process and the powder is removed can be avoided.
3. By setting the same height of the clamping plates, the thicknesses of the mixed powder added up and down on the ceramic matrix composite flat workpiece can be the same, and the RMI process of the ceramic matrix composite flat workpiece is optimized.
4. The sizing method provided by the invention has the advantages that the clamping plate and the flat workpiece are paved layer by layer, so that the flat workpiece is fully contacted with the mixed powder, the operation is simple and convenient, and the sizing method can be used in a single RMI process and can also be used in the RMI process step of a CVI + RMI method.
Drawings
FIG. 1 is a schematic perspective view of a first embodiment of a device for calibrating a ceramic matrix composite workpiece according to the present invention, which is based on an RMI method;
FIG. 2 is a schematic diagram of a second three-dimensional structure of an embodiment of a device for calibrating a ceramic matrix composite workpiece based on an RMI method according to the invention (only one support seat is shown);
FIG. 3 is a schematic three-dimensional structure diagram (only one support seat and a part of clamping plate are shown) of an embodiment of a sizing device for preparing a ceramic matrix composite workpiece based on an RMI method.
The reference numbers are as follows:
the method comprises the following steps of 1-supporting seat, 2-clamping plate group, 21-upper clamping plate, 22-middle clamping plate, 23-lower clamping plate, 4-flat workpiece, 5-limiting tooth, 6-overflow groove, 7-supporting protrusion and 8-clamping groove.
Detailed Description
In this embodiment, numerous specific details are set forth in the following description in order to provide a thorough understanding of the present invention, but the present invention may be embodied in other specific forms other than those described herein and may be similarly generalized by those skilled in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. The appearances of the phrase "in other embodiments" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower", etc. are based on the directions or positional relationships shown in fig. 1, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms first, second are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In this embodiment, the following are defined: the direction of extending along the length of the clamping plate is the X-axis direction, the direction of vertically arranging along the clamping plate is the Z-axis direction, the X-axis direction is vertical to the Z-axis direction, and the direction which passes through the cross point of the X-axis direction and the Z-axis direction and is vertical to the X-axis direction and the Z-axis direction is the Y-axis direction.
Referring to fig. 1 to 3, the embodiment provides a calibration device for preparing a ceramic matrix composite workpiece based on an RMI method, wherein the ceramic matrix composite workpiece is a flat workpiece 4, the calibration device includes 5 clamping plate groups 2 arranged in parallel and two supporting seats 1, a distance between adjacent clamping plate groups 2 in a Y-axis direction is 100 to 150mm, and the supporting seats 1 are made of a high-strength graphite material; specifically, the supporting seat 1 is provided with clamping grooves 8 corresponding to the clamping plate groups 2 one by one, the end parts of the clamping plate groups 2 in the X-axis direction are inserted into the clamping grooves 8, namely, one ends of 5 clamping plate groups 2 are detachably connected with the clamping groove 8 of one supporting seat 1, and the other ends of the 5 clamping plate groups are detachably connected with the clamping groove 8 of the other supporting seat 1; in other embodiments, the clamping plate set 2 may be detachably connected to the supporting base 1 by other means, such as pins.
Each clamping plate group 2 comprises at least three clamping plates which are vertically arranged, and each clamping plate comprises an upper clamping plate 21, a lower clamping plate 23 and at least one middle clamping plate 22; in two adjacent clamping plates of the same clamping plate group 2, one side of any one clamping plate close to the other clamping plate is provided with a plurality of limiting teeth 5, the end face of each limiting tooth 5, which is used for being abutted against the flat plate workpiece 4, is a clamping face, and the clamping face is a plane; the length of the clamping surface of the limiting tooth 5 is 5-10 mm along the X-axis direction; the height of the limiting teeth 5 is 5-10 mm along the Z-axis direction; the clamping surface of the limiting tooth 5 is coated with boron nitride, so that the clamping surface of the limiting tooth 5 is prevented from being adhered to the flat workpiece 4 in the RMI process, and the demolding of the sizing device is prevented from being influenced. An overflow groove 6 is arranged between the adjacent limiting teeth 5, and the length of the overflow groove 6 is 10-20 mm along the X-axis direction; the flat workpiece 4 penetrates each of the chuck groups 2 in the Y-axis direction, and is held by two adjacent chucks in each of the chuck groups 2. In other embodiments, each card group 2 may be two cards, i.e. an upper card 21 and a lower card 23, in which case only one flat workpiece 4 can be calibrated.
The clamping plate is made of a C/C composite material or a high-strength graphite material, and the thickness of the clamping plate in the Y-axis direction is 5-8 mm; wherein, one side of the lower clamping plate 23 is provided with a plurality of limiting teeth 5, and the limiting teeth 5 of the lower clamping plate 23 are upward; at least one side of the upper clamping plate 21 is provided with a plurality of limiting teeth 5, and the limiting teeth 5 on one side face downwards; the upper side and the lower side of the middle clamping plate 22 are both provided with a plurality of limiting teeth 5, and one side of the lower clamping plate 23, the upper clamping plate 21 and the middle clamping plate 22, which is provided with the limiting teeth 5, is a working side; the working side of the clamping plate is provided with two supporting bulges 7, and each limiting tooth 5 is positioned between the two supporting bulges 7 on the corresponding working side; the supporting bulge 7 is higher than the limiting tooth 5 in the Z-axis direction; in two adjacent clamping plates of the same clamping plate group 2, the supporting protrusions 7 of the lower clamping plate support the supporting protrusions 7 of the upper clamping plate, so that a gap for accommodating the flat plate workpiece 4 is formed between the working side of the upper clamping plate and the working side of the lower clamping plate, the height of the gap in the Z-axis direction is 0.95-1.05 times of the thickness of the workpiece, machining allowance is left, and the installation is convenient.
In the present embodiment, referring to fig. 1, the sizing device performs sizing on three flat plate workpieces 4 at a time, and each of the 5 clamping plate groups 2 includes an upper clamping plate 21, a lower clamping plate 23, and two middle clamping plates 22 clamped between the upper clamping plate 21 and the lower clamping plate 23; the upper card 21, the lower card 23, and the two intermediate cards 22 have the same height in the Z-axis direction. The specific type correction method comprises the following steps:
s1, placing a support seat 1 in a crucible, installing a lower clamping plate 23 in 5 clamping plate groups 2 into the support seat 1, and enabling limiting teeth 5 of the lower clamping plate 23 to face upwards;
s2, adding the mixed powder used by the RMI method into the crucible until the mixed powder is flush with the upper surface of the limiting tooth 5 of the lower clamping plate 23;
s3, placing the flat plate workpiece 4 on the limiting teeth 5 of the lower clamping plate 23 to abut against the upper surfaces of the limiting teeth 5 of the lower clamping plate 23, and ensuring that the lower surface of the flat plate workpiece 4 is completely contacted with the mixed powder;
s4, installing the middle clamping plate 22, enabling the limiting teeth 5 on the lower side of the middle clamping plate 22 to be abutted against the upper surface of the flat workpiece 4, and continuously adding the mixed powder until the mixed powder is flush with the upper surface of the limiting teeth 5 on the upper side of the middle clamping plate 22;
s5, continuously arranging the flat workpiece 4, and enabling the lower surface of the flat workpiece 4 to be abutted against the upper surface of the limiting tooth 5 on the upper side of the middle clamping plate 22;
s6, repeating the step S4 and the step S5, continuously installing the middle clamping plate 22 and the flat plate workpiece 4 until the middle clamping plate 22 and the flat plate workpiece 4 are installed completely, then installing the upper clamping plate 21 on the upper surface of the last flat plate workpiece 4, enabling the lower surface of the limiting tooth 5 on the lower side of the upper clamping plate 21 to be abutted to the upper surface of the flat plate workpiece 4, continuously adding the mixed powder until the mixed powder is flush with the upper surface of the upper clamping plate 21, completing the model calibration of the ceramic matrix composite workpiece prepared based on the RMI method, covering a layer of graphite paper above the upper clamping plate 21, and starting the RMI process.
In other embodiments, the sizing device can only size one flat workpiece 4 at a time, and the clamping plate group 2 comprises an upper clamping plate 21 and a lower clamping plate 23; the upper clamping plate 21 and the lower clamping plate 23 are the same in height along the Z-axis direction; the flat workpiece 4 is disposed between the upper pallet 21 and the lower pallet 23.
Claims (10)
1. A type correcting device for preparing a ceramic matrix composite workpiece based on an RMI method is characterized in that the ceramic matrix composite workpiece is a flat plate workpiece (4):
comprises a plurality of clamping plate groups (2) arranged in parallel and two supporting seats (1);
one end of each clamping plate group (2) arranged in parallel is detachably connected with one supporting seat (1), and the other end of each clamping plate group is detachably connected with the other supporting seat (1);
each clamping plate group (2) comprises at least three clamping plates, wherein the at least three clamping plates are an upper clamping plate (21), a lower clamping plate (23) and at least one middle clamping plate (22); one side of the lower clamping plate (23) is provided with a plurality of limiting teeth (5), and the limiting teeth (5) of the lower clamping plate (23) face upwards; at least one side of the upper clamping plate (21) is provided with a plurality of limiting teeth (5), and the limiting teeth (5) on one side face downwards; the upper side and the lower side of the middle clamping plate (22) are provided with a plurality of limiting teeth (5);
an overflow groove (6) is arranged between the adjacent limiting teeth (5);
defining: the extending direction along the length of the clamping plate is an X-axis direction, the vertical arrangement direction along the clamping plate is a Z-axis direction, the X-axis direction is vertical to the Z-axis direction, and the direction which passes through the intersection point of the X-axis direction and the Z-axis direction and is vertical to the X-axis direction and the Z-axis direction is a Y-axis direction;
the flat plate workpiece (4) penetrates through each clamping plate group (2) along the Y-axis direction and is clamped by two adjacent clamping plates in each clamping plate group (2);
the distance between the adjacent clamping plate groups (2) in the Y-axis direction is 100-150 mm.
2. The calibration device for preparing ceramic matrix composite workpieces based on the RMI method according to claim 1, wherein:
the end face, used for abutting against the flat workpiece (4), of the limiting tooth (5) is a clamping face, and the clamping face is a plane;
the length of the clamping surface of the limiting tooth (5) along the X-axis direction is 5-10 mm; the height of the limiting teeth (5) along the Z-axis direction is 5-10 mm;
the length of the overflow groove (6) along the X-axis direction is 10-20 mm.
3. The calibration device for preparing ceramic matrix composite workpieces based on the RMI method according to claim 2, wherein:
the heights of the upper clamping plate (21), the lower clamping plate (23) and each middle clamping plate (22) are the same along the Z-axis direction.
4. The calibration device for preparing ceramic matrix composite workpieces based on the RMI method according to claim 3, wherein:
the lower clamping plate (23), the upper clamping plate (21) and the middle clamping plate (22) are all made of C/C composite materials or high-strength graphite materials;
the thicknesses of the lower clamping plate (23), the upper clamping plate (21) and the middle clamping plate (22) in the Y-axis direction are all 5-8 mm.
5. The device for calibrating the ceramic matrix composite workpiece based on the RMI method according to any one of claims 1 to 4, wherein:
the clamping surface of the limiting tooth (5) is coated with boron nitride;
the supporting seat (1) is made of high-strength graphite materials.
6. The device for calibrating the ceramic matrix composite workpiece based on the RMI method according to claim 5, wherein:
one side of the lower clamping plate (23), the upper clamping plate (21) and the middle clamping plate (22) provided with the limiting teeth (5) is a working side;
two supporting bulges (7) are arranged at two ends of the working side of the clamping plate, and each limiting tooth (5) is positioned between the two corresponding supporting bulges (7) at the working side; the supporting bulge (7) is higher than the limiting tooth (5) in the Z-axis direction;
in two adjacent clamping plates of the same clamping plate group (2), the supporting protrusions (7) of the lower clamping plate support the supporting protrusions (7) of the upper clamping plate, a gap for accommodating a flat workpiece (4) is formed between the working side of the upper clamping plate and the working side of the lower clamping plate, and the height of the gap along the Z-axis direction is 0.95-1.05 times of the thickness of the workpiece.
7. The device for calibrating the ceramic matrix composite workpiece based on the RMI method according to claim 6, wherein:
the supporting seat (1) is provided with clamping grooves (8) corresponding to the clamping plate groups (2) one by one, the end portions of the clamping plate groups (2) are inserted into the clamping grooves (8), and detachable connection between the clamping plate groups (2) and the supporting seat (1) is achieved.
8. The device for calibrating the ceramic matrix composite workpiece based on the RMI method according to claim 6, wherein:
the height of the gap in the Z-axis direction is the same as the thickness of the workpiece.
9. A shape correcting method for preparing a ceramic matrix composite workpiece based on an RMI method is characterized in that the shape correcting device for preparing the ceramic matrix composite workpiece based on the RMI method according to any one of claims 1 to 8 is adopted, and the shape correcting method comprises the following steps:
s1, placing a support seat (1) in a crucible, installing a lower clamping plate (23) in a plurality of clamping plate groups (2) into the support seat (1), and enabling limiting teeth (5) of the lower clamping plate (23) to face upwards;
s2, adding the mixed powder used by the RMI method into the crucible until the mixed powder is flush with the upper surface of the limiting tooth (5) of the lower clamping plate (23);
s3, placing the flat plate workpiece (4) on the limiting teeth (5) of the lower clamping plate (23) and enabling the flat plate workpiece to be abutted against the upper surfaces of the limiting teeth (5) of the lower clamping plate (23) so as to ensure that the lower surface of the flat plate workpiece (4) is in complete contact with the mixed powder;
s4, installing a middle clamping plate (22), wherein the lower surface of a limiting tooth (5) on the lower side of the middle clamping plate (22) is abutted to the upper surface of the flat workpiece (4), and continuously adding the mixed powder until the mixed powder is flush with the upper surface of the limiting tooth (5) on the upper side of the middle clamping plate (22);
s5, continuously arranging the flat workpiece (4) to enable the lower surface of the flat workpiece (4) to be abutted against the upper surface of the limiting tooth (5) on the upper side of the middle clamping plate (22);
s6, repeating the steps S4 and S5, and installing the rest middle clamping plates (22) and the flat plate workpiece (4) positioned on the upper side of the middle clamping plates;
s7, installing an upper clamping plate (21) on the upper surface of the uppermost flat plate workpiece (4) in the step S6, abutting the lower surface of a limiting tooth (5) on the lower side of the upper clamping plate (21) against the upper surface of the flat plate workpiece (4), continuously adding the mixed powder until the mixed powder is flush with the upper surface of the upper clamping plate (21), completing the shape correction of the ceramic matrix composite workpiece prepared based on the RMI method, and starting the RMI process.
10. The method for calibrating a ceramic matrix composite workpiece based on the RMI process according to claim 9, wherein:
in step S6, before starting the RMI process, a layer of graphite paper is laid on the upper surface of the upper clamping plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210879750.5A CN115284412B (en) | 2022-07-25 | 2022-07-25 | Device and method for calibrating ceramic matrix composite workpiece based on RMI method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210879750.5A CN115284412B (en) | 2022-07-25 | 2022-07-25 | Device and method for calibrating ceramic matrix composite workpiece based on RMI method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115284412A true CN115284412A (en) | 2022-11-04 |
| CN115284412B CN115284412B (en) | 2024-10-01 |
Family
ID=83823436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210879750.5A Active CN115284412B (en) | 2022-07-25 | 2022-07-25 | Device and method for calibrating ceramic matrix composite workpiece based on RMI method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115284412B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050000451A1 (en) * | 2003-05-13 | 2005-01-06 | Nobuyuki Mitsui | Clamping jig for semiconductor laser bars |
| CN202626281U (en) * | 2012-04-13 | 2012-12-26 | 璇瑰塑胶工业(深圳)有限公司 | Laminated vacuum plating clamp |
| CN107419240A (en) * | 2017-08-14 | 2017-12-01 | 罗博特科智能科技股份有限公司 | A kind of graphite boat fast fixture |
| JP2019021880A (en) * | 2017-07-21 | 2019-02-07 | 東京エレクトロン株式会社 | Workpiece holding mechanism and workpiece processing system |
| JP2019147729A (en) * | 2018-02-28 | 2019-09-05 | イビデン株式会社 | Manufacturing method for ceramic composite material, and fixture |
| CN110627488A (en) * | 2019-09-23 | 2019-12-31 | 广东工业大学 | Novel ceramic-based diamond compact and preparation method thereof |
| CN112645716A (en) * | 2020-12-22 | 2021-04-13 | 西安鑫垚陶瓷复合材料有限公司 | Deposition sizing tool and method for ceramic matrix composite part |
| CN112661521A (en) * | 2020-12-22 | 2021-04-16 | 西安鑫垚陶瓷复合材料有限公司 | Deposition sizing tool and method for ceramic matrix composite part |
-
2022
- 2022-07-25 CN CN202210879750.5A patent/CN115284412B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050000451A1 (en) * | 2003-05-13 | 2005-01-06 | Nobuyuki Mitsui | Clamping jig for semiconductor laser bars |
| CN202626281U (en) * | 2012-04-13 | 2012-12-26 | 璇瑰塑胶工业(深圳)有限公司 | Laminated vacuum plating clamp |
| JP2019021880A (en) * | 2017-07-21 | 2019-02-07 | 東京エレクトロン株式会社 | Workpiece holding mechanism and workpiece processing system |
| CN107419240A (en) * | 2017-08-14 | 2017-12-01 | 罗博特科智能科技股份有限公司 | A kind of graphite boat fast fixture |
| JP2019147729A (en) * | 2018-02-28 | 2019-09-05 | イビデン株式会社 | Manufacturing method for ceramic composite material, and fixture |
| CN110627488A (en) * | 2019-09-23 | 2019-12-31 | 广东工业大学 | Novel ceramic-based diamond compact and preparation method thereof |
| CN112645716A (en) * | 2020-12-22 | 2021-04-13 | 西安鑫垚陶瓷复合材料有限公司 | Deposition sizing tool and method for ceramic matrix composite part |
| CN112661521A (en) * | 2020-12-22 | 2021-04-16 | 西安鑫垚陶瓷复合材料有限公司 | Deposition sizing tool and method for ceramic matrix composite part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115284412B (en) | 2024-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105683131B (en) | The method for repairing the matrix crackle that fusing is penetrated into ceramic matrix composite | |
| US9109747B2 (en) | Modular ceramic guideway member | |
| US6368441B1 (en) | Method for manufacturing optical fiber array | |
| CN1048475C (en) | Jacketing device of optical fibre and position regulation method thereof | |
| CN109885863B (en) | Method for predicting thermal expansion coefficient of ceramic matrix composite in oxidation environment | |
| KR20160015282A (en) | Firing tool | |
| CN115284412A (en) | Device and method for calibrating ceramic matrix composite workpiece based on RMI method | |
| CN111396486B (en) | Three-dimensional double-arrow negative Poisson ratio structure and interlocking assembly process thereof | |
| CN111941826B (en) | Block additive manufacturing method of complex part | |
| CN107266099A (en) | A kind of aero-engine ceramic matrix composite turbine stator blade near-net-shape fixture | |
| EP1400811B1 (en) | Support body assembly for conductive contactor | |
| EP1702908A1 (en) | Composite material and method for producing same | |
| US9649681B1 (en) | Ceramic die including a plurality of preferentially located fibers and associated method of constructing a ceramic die | |
| CN213184218U (en) | Silicon chip climbing mechanism | |
| CN212652690U (en) | Workpiece sintering jig | |
| KR101378838B1 (en) | Solar wafer tray using sillicon wafer | |
| EP1186920A1 (en) | Tool and method for positioning optical fiber arrays | |
| CN116514570B (en) | Composite material, preparation method thereof and electronic equipment | |
| CN214223775U (en) | Silicon carbide sintering kiln reaction tool | |
| CN110587343A (en) | Tool clamp capable of being replaced and installed quickly and using method thereof | |
| CN213545926U (en) | Positioning plate for internal component of high-temperature gas cooled reactor metal pile | |
| EP4414345A1 (en) | Composite panels and methods for manufacturing the same | |
| KR101144108B1 (en) | Vibration welding method for manufacturing manifold for fuel cell | |
| CN218363301U (en) | Split type crossbeam of five longmen machining center | |
| CN214324185U (en) | Multi-laser scanning splicing correction device for additive manufacturing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |