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Manufacturing method of carbon/carbon crucible

A production method and crucible technology, which is applied in the field of carbon-carbon crucible production, can solve the problems of short service life of the crucible, fragile graphite, poor stability, etc., and achieve the effect of beautiful appearance, uniform thickness and uniform distribution

Active Publication Date: 2015-01-07
佛山市石金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most common one is the three-lobed graphite crucible. Because the crucible itself is spliced ​​by three pieces, its stability is poor, and the graphite itself is fragile, so the service life of the crucible is often short.

Method used

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  • Manufacturing method of carbon/carbon crucible
  • Manufacturing method of carbon/carbon crucible

Examples

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Embodiment 1

[0037] Take making a kind of thickness be 3mm, inner diameter is the carbon charcoal crucible of 10 inches as example, and its manufacturing method comprises the following manufacturing steps:

[0038] 1) Mandrel selection: According to the size of the charcoal crucible to be made, select a stainless steel mandrel with an outer diameter of 25.4cm, and evenly coat the outer surface of the mandrel with a 0.1-0.3mm thick water-based polyurethane release agent. winding

[0039] 2) Manufacture of crucible prefabricated body: install the mandrel in step 1) on the winding machine, select carbon fiber with 12K tow, and its spreading width is 8mm, and the number of winding layers required to be wound is determined to be 8 through calculation, and the winding process as follows:

[0040] a. Winding the first layer: Wind the carbon fiber on the surface of the mandrel at an angle of 30°, and the winding pressure is 2N;

[0041] b. Winding the second layer: the carbon fiber is at an angl...

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Abstract

The invention discloses a manufacturing method of a carbon / carbon crucible. The method comprises: performing layer-by-layer winding molding on carbon fiber on the surface of a core mold to prepare a crucible preform, performing crucible solidification and crucible densification treatments on the crucible preform to finally prepare the carbon / carbon crucible finished product with a density of 1.70 g / cm<3> or more. When in the winding process of the crucible preform, the carbon fiber winding angle between the first layer and the last but one layer on the core mold is 0-45 DEG, and the carbon fiber winding angle of the last layer is 0-90 DEG, the filament bundle of carbon fiber is 1-350 K, and after winding, the winding directions of two adjacent layers of carbon fiber are stagger. The manufacturing method of the carbon / carbon crucible overcomes heavy and frangible shortcomings of conventional graphite; and the manufactured crucible is uniform in distribution of the internal filament bundle, uniform in thickness, close in fitting between layers, excellent in integral physical properties and long in service life.

Description

technical field [0001] The invention relates to a method for manufacturing a crucible, in particular to a method for manufacturing a charcoal crucible for a single crystal furnace. Background technique [0002] In the single crystal furnace, a crucible is needed to support and fix the quartz crucible that holds the silicon material. The most common one is the three-lobed graphite crucible. Because the crucible itself is spliced ​​by three pieces, its own stability is poor, and the graphite itself is fragile, so the service life of the crucible is often short. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a method for manufacturing a carbon-charcoal crucible that can replace the traditional graphite three-lobe crucible, has a stable structure, and has a long service life. [0004] To achieve the above object, the present invention is achieved through the following technical solutions: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/83
Inventor 康养科杨水萍高靖宇龙礼妹
Owner 佛山市石金科技有限公司
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