Graphite boat for graphite furnace

By designing graphite boat dishes made of isostatic graphite, using the connection structure between the graphite cylinder and the boat bottom plate, the problems of uneven heat exposure in the graphite furnace and prone to cracks in the coiled graphite are solved, achieving more efficient sintering capacity and stable product performance.

CN222688832UActive Publication Date: 2025-03-28SHUZHOU GU CARBON NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202420663915.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-02
Publication Date
2025-03-28
Estimated Expiration
2034-04-02

AI Technical Summary

Technical Problem

The existing graphite film boat dishes are unevenly heated, closed in the graphite furnace, and have large invalid volume. The sintered coil graphite is prone to cracks, flanges, lightning patterns, and black and white edges.

Method used

A graphite boat dish is designed, including a boat cover plate and a boat bottom plate, which is connected to the boat bottom plate through a graphite cylinder. There are several grooves on the boat cover plate and the boat bottom plate, and the grooves are connected in coordination with the graphite cylinder, and the materials are all isostatic graphite.

Benefits of technology

Customized adjustment of graphite cylinder support is achieved, with open surroundings, uniform heating and expansion and foaming during sintering. The production capacity increases by 30% when the sintering area is the same. The open heating surface is conducive to uniform heating and stable performance of the sintered product.

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Abstract

The utility model relates to the technical field of graphite furnaces, in particular to a graphite boat for a graphite furnace, which comprises a boat cover plate, the boat cover plate is connected with a boat bottom plate through a graphite cylinder, a plurality of grooves are arranged on the boat cover plate and the boat bottom plate, the grooves are connected with the graphite cylinder in a matching manner, and the graphite cylinder is connected with the boat cover plate. The boat cover plate, the graphite cylinder and the boat bottom plate are all made of isostatic pressing graphite, the resistivity of the isostatic pressing graphite is 10-15 omega.m, the height of the graphite cylinder is 35-280 mm, the graphite cylinder comprises a plurality of sub-graphite cylinders, and the outer diameter of the front end of the graphite cylinder is equal to the inner diameter of the rear end of the graphite cylinder. The height of the graphite cylinder can be customized and adjusted through the graphite cylinder support according to the width of coiled material graphite, the periphery is open, and uniform heating and complete expansion foaming during sintering are utilized; the productivity is increased by 30% in the same sintering area in the furnace, the heating surface is open, uniform heating is facilitated, and the performance of the sintered product is stable.
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