Single crystal furnace thermal field thermal insulation cylinder and preparation method thereof

A technology of heat preservation cylinder and single crystal furnace, which is applied in the directions of single crystal growth, single crystal growth, chemical instruments and methods, etc., can solve the problems of easy deformation of heat preservation cylinder, unqualified size, and difficulty in processing and forming.

Active Publication Date: 2021-09-10
内蒙古中晶科技研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, for large-sized insulation cylinders, it is difficult to manufacture, and it is easy to deform when producing a complete large-size insulation cylinder. In the process of subsequent quality inspection and processing into finished products, there are problems of unqualified dimensions or difficult processing.

Method used

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  • Single crystal furnace thermal field thermal insulation cylinder and preparation method thereof
  • Single crystal furnace thermal field thermal insulation cylinder and preparation method thereof
  • Single crystal furnace thermal field thermal insulation cylinder and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0047] 1. Preparation of tablet A

[0048] (1) Superimpose carbon fiber cloth and polyester-aramid mixed fiber, and spread a layer of polyester-aramid mixed fiber for every 2 layers of carbon fiber cloth. The mass ratio of polyester and aramid in the polyester-aramid mixed fiber is 4.5:1, The mass ratio of carbon fiber cloth and polyester aramid mixed fiber is 5:2, and mixed piece 1 is obtained.

[0049](2) Mix acetone, epoxy resin, coal tar pitch and nanofibers according to the ratio of 20:4:4:3, heat to 95°C, and obtain an impregnating solution after uniformity, and completely immerse the mixed parts in the impregnating solution. The liquid mass ratio is 1:10, soaked at this temperature for 30 minutes and taken out to obtain the mixing piece 2.

[0050] (3) The mixed part 2 is tiled in the mould, hot-pressed and solidified, carbonized, cooled after heat preservation, and A sheet is obtained;

[0051] Hot press solidified as:

[0052] Pressurize to 1Kg / cm 2 , heat up to 1...

Embodiment 1-7

[0073] Combine according to the following table to prepare the insulation cylinder.

[0074] table 3.

[0075] Combination Example 1 A1-B Example 2 A2-B Example 3 A3-B Example 4 A4-B Example 5 A5-B Example 6 A6-B Example 7 A7-B

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Abstract

The invention discloses a single crystal furnace thermal field insulation cylinder and a preparation method thereof, and belongs to the technical field of thermal field materials for high-temperature furnaces. The thermal field thermal insulation cylinder of the single crystal furnace is formed by combining six thermal insulation cylinder sheets, the thermal insulation cylinder sheets are fitted through concave-convex grooves, the six thermal insulation cylinder sheets are divided into three sheets A and three sheets B, and the three sheets A and the three sheets B are alternately combined at intervals; the preparation process of the sheet A comprises the following steps: superposing carbon fiber cloth and polyester aramid mixed fibers, dipping in a pre-dipping solution, paving in a mold, and carrying out hot-pressing curing and carbonization; and the preparation process of the sheet B comprises the following steps: impregnating the carbon fiber cloth with resin, paving in a mold, hot-pressing, curing and carbonizing. And meanwhile, the thermal insulation cylinder is easy to disassemble and assemble when being applied to the thermal field of the single crystal furnace, and the inconvenience caused by carrying and applying the whole thermal insulation cylinder is avoided. And the combined thermal insulation cylinder is high in mechanical and thermal physical properties, good in dimensional stability and long in service life.

Description

technical field [0001] The invention belongs to the technical field of thermal field materials for high-temperature furnaces, and in particular relates to a single crystal furnace thermal field insulation cylinder and a preparation method thereof. Background technique [0002] As an indispensable equipment in traditional industrial fields such as powder metallurgy, new materials and new energy fields, and national defense industry, high-temperature furnaces have been widely used. The thermal field of the single crystal furnace contains three kinds of insulation cylinders, upper, middle and lower, and the material is graphite or carbon-carbon composite material; under normal circumstances, for better insulation effect, the insulation cylinder is placed in the solidified insulation cylinder. At first, the insulation cylinder was made of graphite, which required high energy consumption and high production costs. The processing cost of large-sized graphite insulation cylinder i...

Claims

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Application Information

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IPC IPC(8): C30B15/00C30B29/06
CPCC30B15/00C30B29/06
Inventor张全顺郝志奋焦李周任佳乐李志强
Owner内蒙古中晶科技研究院有限公司