Method for preparing carbon/carbon cylinder by using winding technology

A winding process and cylinder technology, which is applied in the field of hot field parts and preparation for high-temperature furnaces, can solve the problems of large waste of processing surplus and long production cycle, so as to save processing surplus, shorten production cycle time and improve safety Effect

Inactive Publication Date: 2018-06-22
AEROSPACE RUITIAN CARBON MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a carbon / carbon cylinder by a winding process, which solves the problems of long production cycle, large processing surplus and serious waste in the traditional preparation process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing a carbon / carbon cylinder by a winding process, comprising the following steps:

[0046] (1) Prepare a sealed heat shield with a specification of φ115*φ109*550mm according to the requirements. First, use graphite material to design and manufacture a molding mold. The outer diameter of the molding mold is 106mm. The inner diameter and the shape of both ends match the rotating tooling of the winding equipment.

[0047] (2) This product is used to transmit corrosive gases and requires very good sealing performance. Therefore, the cylinder adopts a winding structure that combines graphite paper, carbon cloth and carbon wire in proportion. The number of graphite paper layers is 5 layers, and graphite The paper thickness is 0.3mm, and the mass ratio of carbon cloth to carbon filament is 1:1.

[0048](3) First install the forming mold on the rotating shaft and fix it on the winding machine, then lay a release paper layer on the surface of the graphite cyl...

Embodiment 2

[0062] (1) Prepare a structural cylinder of φ780*φ750*800mm according to the requirements. Firstly, use graphite material to design and make a molding mold. Rotary tooling to match.

[0063] (2) According to the functional requirements of the cylinder, the product structure is designed. The structural cylinder adopts carbon cloth and carbon wire to form a combined structure in proportion. The mass ratio of carbon cloth and carbon filament in the structural cylinder is 1:10.

[0064] (3) First install the forming mold on the rotating shaft and fix it on the winding machine, then lay a release paper layer on the surface of the graphite cylinder, and stick it tightly with plastic tape, so that the release paper is in a tight state, and the release paper layer It is composed of graphite paper and sulfuric acid paper. The number of graphite paper layers is 2 layers, and the sulfuric acid paper is 1 layer. From the inside to the outside, it is sulfuric acid paper, graphite paper, an...

Embodiment 3

[0078] A method for preparing a carbon / carbon cylinder by a winding process, comprising the following steps:

[0079] (1) Prepare a sealed cylinder of φ668*φ662*535mm according to the requirements. Firstly, use graphite material to design and make a molding mold. Rotary tooling to match.

[0080] (2) According to the functional requirements of the cylinder, design the product structure. The sealed cylinder adopts a winding structure that combines graphite paper, carbon cloth and carbon filament in proportion. The number of layers of graphite paper in the sealed cylinder is not low For 3 layers, the thickness of graphite paper is 0.4mm, and the mass ratio of carbon cloth to carbon filament is 1:5.

[0081] (3) First install the forming mold on the rotating shaft and fix it on the winding machine, then lay a release paper layer on the surface of the graphite cylinder, and stick it tightly with plastic tape, so that the release paper is in a tight state, and the release paper la...

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Abstract

The invention provides a method for preparing carbon / carbon cylinder by using a winding technology. The method comprises the following steps that (1)a graphite material is utilized to design, manufacture and form a mold according to the dimension of the cylinder; (2) product structures of a sealed type cylinder and a structural type cylinder are designed respectively according to the using functional requirements of the cylinder; (3) winding forming is conducted by using a winding machine; (4) solidification treatment is conducted; (5) carbonization treatment is conducted; (6) CVD (chemical vapor deposition) densifying treatment is conducted; (7) high temperature treatment is conducted; and (8) machining forming is conducted. Compared with a traditional carbon / carbon cylinder production technology, the method has the following advantages that (1) the product is designed and formed in net dimension, the machining allowance of the finished product is less, the production cost is as low as 60% of the traditional technological cost; (2) the fiber content of the product is high, the basic density of the green body of the formed product is high, the product period is short, the machiningallowance is saved, and the strength is high, the method can achieve the sealing function of the carbon / carbon cylinder, the furnace internal thermal treatment efficiency is effectively improved, theservice life of a furnace external heat preservation material is prolonged, and the carbon / carbon cylinder can serve as a gas transmission pipeline, and has the generalization performance, the innovation advantage and the batch production advantage.

Description

technical field [0001] The invention relates to the field of hot field parts for high-temperature furnaces and a preparation method, in particular to a method for preparing a carbon / carbon cylinder by a winding process. Background technique [0002] The carbon / carbon cylinder is an important high-temperature thermal field component, which can be used as a heat-insulating structural component, and can also be used as a gas transmission pipeline at high temperature. The use of carbon / carbon cylinder in the furnace can effectively improve the efficiency of heat treatment in the furnace, and resist gas erosion to increase the service life of the insulation material outside the furnace. The carbon / carbon cylinder has the characteristics of stable high-temperature performance and anti-airflow erosion, and has been widely used in high-temperature industrial equipment such as single crystal drawing hot field and high-temperature gas transmission. [0003] Chinese patent ZL201210230...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/52C04B35/622F27D1/00
CPCC04B35/52C04B35/622C04B35/83C04B2235/48C04B2235/5248C04B2235/5292C04B2235/656C04B2235/6567C04B2235/658C04B2235/6581C04B2235/77C04B2235/94F27D1/0033Y02P10/143
Inventor 陈小飞张贵歧姜召阳罗昆鹏于洪刚王春梅高晓佳曹磊崔树永
Owner AEROSPACE RUITIAN CARBON MATERIALS CO LTD
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