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CN-121988504-A - Dipping and cracking tool

CN121988504ACN 121988504 ACN121988504 ACN 121988504ACN-121988504-A

Abstract

The invention relates to the technical field of asphalt processing technology, and discloses an impregnation cracking tool which comprises a first flat plate and a second flat plate, wherein the first flat plate and the second flat plate are oppositely arranged and used for clamping a prefabricated body, a fastening sleeve member penetrates through the first flat plate and the second flat plate and is suitable for fastening the first flat plate and the second flat plate, and a plurality of through holes are distributed on the surfaces of the first flat plate and the second flat plate, which face the prefabricated body. Through relative first dull and stereotyped and the dull and stereotyped of second, the cooperation runs through the fastening external member, can realize the stable centre gripping to the preform, effectively prevent the displacement or the deformation of preform in the impregnation and pyrolysis process. The through hole structure uniformly distributed on the surface of the flat plate provides a sufficient flow channel for the impregnant, ensures that the impregnant can uniformly permeate into the preform, and is also convenient for gas generated in the cracking process to escape.

Inventors

  • SHIJIACAIRANG
  • HU XIANG
  • SUN ZHIYUAN
  • LUO YATAO
  • ZHANG ZHENWEI
  • WANG MING
  • HE ZHE

Assignees

  • 北京天仁道和新材料有限公司

Dates

Publication Date
20260508
Application Date
20251224

Claims (10)

  1. 1. The utility model provides a flooding schizolysis frock which characterized in that includes: A first flat plate (2) and a second flat plate (4), wherein the first flat plate (2) and the second flat plate (4) are oppositely arranged and are used for clamping a preform; the fastening sleeve penetrates through the first flat plate (2) and the second flat plate (4) and is suitable for fastening the first flat plate (2) and the second flat plate (4), and a plurality of through holes (5) are distributed on the surfaces of the first flat plate (2) and the second flat plate (4) facing the prefabricated body.
  2. 2. The impregnation cracking tool according to claim 1, wherein the fastening sleeve comprises a plurality of screws (3) and nuts (1), and the screws (3) are uniformly distributed in edge areas of the first flat plate (2) and the second flat plate (4).
  3. 3. The impregnation cracking tool according to claim 2, wherein the nuts (1) are arranged at two ends of the screw (3), and the inner diameter of the nuts (1) is matched with the diameter of the screw (3).
  4. 4. A dip cracking tool according to claim 3, characterized in that the first plate (2) and the second plate (4) are identical in shape and size and completely cover both sides of the preform.
  5. 5. The impregnation pyrolysis tool according to claim 4, wherein the through holes (5) of the first plate (2) and the second plate (4) are distributed in an array.
  6. 6. The impregnation cracking tool according to claim 5, wherein the length of the screw (3) is greater than the sum of the total thickness of the first plate (2), the second plate (4) and the clamped preform, and the nuts (1) are arranged on two sides of the first plate (2) and the second plate (4) facing away from the preform.
  7. 7. The impregnation and pyrolysis tool according to claim 6, characterized in that the number and distribution density of the through holes (5) are set so as to enable the pitch to flow uniformly inside the preform, so as to achieve uniform impregnation of the preform, while ensuring that the effective support area of the first plate (2) and the second plate (4) on the preform is not lower than a preset ratio.
  8. 8. The impregnation pyrolysis tool according to claim 7, wherein the material of the first plate (2) and the second plate (4) is graphite.
  9. 9. The impregnation pyrolysis tool according to claim 8, wherein the diameter of the screw (3) is in a preset proportional relationship with the thickness of the first plate (2) and the second plate (4).
  10. 10. The impregnation pyrolysis tool according to claim 8, wherein the diameter of the through hole (5) is smaller than the diameter of the largest particle in the preform, and the inner wall of the through hole (5) is provided with a smooth flow guiding surface.

Description

Dipping and cracking tool Technical Field The invention relates to the technical field of asphalt processing technology, in particular to an impregnation cracking tool. Background The carbon/carbon composite material impregnating and carbonizing process mainly uses a carbon fiber woven preform as a reinforcement body, asphalt carbon as a matrix, and the full-carbon multiphase composite material is produced through a plurality of rounds of process reactions. The carbon/carbon composite material has excellent mechanical property and thermal shock resistance, and has been widely applied to the fields of aerospace, medical materials and the like. The impregnation and pyrolysis process refers to a process method for densifying a carbon-carbon composite material, wherein prefabricated reinforcements such as carbon fiber multidirectional braids are subjected to asphalt impregnation and then pyrolysis, so that asphalt is subjected to a pyrolysis polycondensation reaction, non-carbon atoms such as hydrogen, nitrogen, oxygen and the like are removed, and pure carbon is left. The existing impregnation carbonization process is mainly applied to densification of ablation-resistant parts, and compared with the deposited carbon generated by a deposition process, the pitch carbon generated by the process has better ablation-resistant effect when undergoing ablation. The preparation of the carbon-carbon composite material is to continuously introduce a carbon source for densification on the basis of the prefabricated body, thereby achieving the process of high-density composite material. However, the newly arrived preform is in a fabric state, has low structural strength, is extremely easy to deform by extrusion or expansion by external force, and when the first round or the first round of asphalt dipping cracking densification is carried out, the phenomenon of layering or deformation can occasionally occur in the preform under the action of huge stress generated by the process, once the preform is in the state of being densified to a finished product, the physical property of the finished product can be greatly reduced, the performance requirement cannot be met, and the layering or deformation of the preform seriously affects the use of the preform. Disclosure of Invention In view of the above, the invention provides an immersion cracking tool to solve the problem of deformation or delamination caused by stress in the process. The invention provides an impregnation cracking tool, which comprises: The first flat plate and the second flat plate are oppositely arranged and are used for clamping the prefabricated body; The fastening sleeve penetrates through the first flat plate and the second flat plate and is suitable for fastening the first flat plate and the second flat plate, and a plurality of through holes are distributed on the surfaces of the first flat plate and the second flat plate, which face the prefabricated body. The fixing device has the beneficial effects that through the relative first flat plate and the second flat plate and the through type fastening sleeve, the fixing device can realize stable clamping of the prefabricated body and effectively prevent the prefabricated body from displacement or deformation in the impregnation and high-temperature cracking processes. Through-hole structure that dull and stereotyped surface evenly laid provides abundant flow path for the impregnant, ensures that the impregnant can evenly permeate to the prefabrication body inside, and the through-hole still is convenient for the gaseous escape that produces in the schizolysis process, avoids bubble gathering to lead to the flooding inhomogeneous, has promoted dipping efficiency and product quality, has simplified frock structure simultaneously, has reduced manufacturing cost, and the rational distribution of through-hole can also provide certain thermal stress relief function under high temperature environment, reduces frock deformation risk. In an alternative embodiment, the fastening kit includes a plurality of screws and nuts, the screws being uniformly distributed in the first plate and the second plate at the edge regions. The clamping device has the beneficial effects that the screws and the nuts uniformly distributed in the edge area of the flat plate are used as the fastening sleeve, so that the first flat plate and the second flat plate can uniformly press the prefabricated body, the problem of local stress concentration possibly caused by a traditional single-point fastening mode is avoided, the clamping stability is improved, the uniform arrangement of the screws also enables the tool to be uniformly heated and expanded in a high-temperature environment, and the adverse effect caused by thermal deformation is reduced. Meanwhile, the modularized fastening is convenient for the quick assembly and disassembly of the tool, the production efficiency is improved, and the later maintenance and the part replacement are a