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A Repairing Method of Fractured Graphite Mold

A graphite mold and repair method technology, applied in the field of graphite mold repair, can solve the problems of easy expansion of graphite mold, easy delay of production cycle, increase of production cost, etc., and achieve the effects of low cost, reduced production cost and short working hours

Active Publication Date: 2017-01-04
XIAN XINGUI CERAMIC COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] (1) The preparation conditions of ceramic matrix composites are mostly high temperature and long cycle, and the graphite mold is prone to expansion and fracture;
[0004] (2) Improper operations such as demoulding and closing the mold, resulting in the breakage of the mold;
Producing new graphite molds not only increases production costs, but also easily delays the production cycle

Method used

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  • A Repairing Method of Fractured Graphite Mold
  • A Repairing Method of Fractured Graphite Mold

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Embodiment Construction

[0033] The present invention uses carbon powder, silicon carbide powder, modified acrylic glue, honey and alcohol as raw materials, and carbon powder and silicon carbide powder provide a substrate for subsequent chemical vapor deposition. The modified acrylic glue has a bonding effect, but It is easy to solidify at room temperature, and honey contains volatile oil and glucose, which have the effect of dissolving and solidifying. After mixing these substances, add alcohol as a solvent to configure the adhesive, and coat the mixture evenly on the mold At the fracture, add auxiliary tooling, dry naturally at room temperature, and then carry out chemical vapor deposition. During the high temperature process, honey and acrylic resin are carbonized. The ceramic phase structure sticks the mold together, so as to achieve the purpose of repairing the mold.

[0034] The invention solves the repair of the vulnerable graphite mold with high frequency of use and low strength requirement, a...

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Abstract

The invention provides a fractured graphite die repairing method. A fractured graphite die is repaired by a method combining physical coating with chemical vapor deposition silicon carbide, and the strength of the repaired graphite die can reach more than 75% of the intact state. The fractured graphite die repairing method has the advantages that the repaired fractured graphite die can be used normally, production cost is reduced, production cycle is shortened, and the method is particularly applicable to graphite dies high in use frequency and low in strength requirement.

Description

technical field [0001] The invention provides a method for repairing a fractured graphite mold. Background technique [0002] In the preparation process of ceramic matrix composites, the use of graphite molds is indispensable, and the amount of use is large, and the fracture and damage of the molds are frequent. There are mainly the following fracture situations: [0003] (1) The preparation conditions of ceramic matrix composites are mostly high temperature and long cycle, and the graphite mold is prone to expansion and fracture; [0004] (2) Improper operations such as demoulding and closing the mold, resulting in the breakage of the mold; [0005] (3) Disposable graphite molds damaged for the purpose of demoulding. [0006] Therefore, the fracture of graphite molds in the production process is inevitable and occurs frequently. Producing new graphite molds not only increases the production cost, but also easily delays the production cycle. In order to save production c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B37/00
Inventor 马玉洁邬国平成来飞左新章李华民冯锋
Owner XIAN XINGUI CERAMIC COMPOSITE MATERIAL CO LTD
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