Feed apparatus for silicon carbide growth

By using a uniform feeding and lifting component in the silicon carbide growth feeder, the problem of powder inhomogeneity within the crucible was solved, ensuring uniform growth and high-quality production of silicon carbide single crystals.

CN121046936BActive Publication Date: 2026-07-21JIANGSU HI-PRINT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU HI-PRINT TECH CO LTD
Filing Date
2025-07-18
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In traditional silicon carbide single crystal manufacturing, the uneven growth rate caused by the non-uniformity of silicon carbide powder in the crucible leads to surface defects, affecting the quality of the ingot and the yield of the slices.

Method used

A feeding device for silicon carbide growth is adopted, including a uniform feeding component and a lifting component. The material is leveled by a vortex feeder, a smoothing frame and a stirring frame, and combined with vibration of a vibrating rod and clamping blocks to ensure the uniformity and density of the material in the crucible.

Benefits of technology

This method achieves uniform distribution and dense packing of silicon carbide powder in the crucible, reduces growth defects, and improves single crystal quality and slice yield.

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    Figure CN121046936B_ABST
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Abstract

The application discloses a feeding device for silicon carbide growth, which comprises a feeding box and a conveying mechanism installed in the feeding box, a crucible capable of moving up and down is arranged on the conveying mechanism, a uniform feeding assembly is arranged in the feeding box, the uniform feeding assembly comprises a guide disc, a feeding pipe is slidably arranged on the guide disc, a sliding pipe is rotatably arranged on the feeding pipe, a leveling frame and a stirring frame are rotatably arranged at the bottom of the guide disc, a lifting assembly is arranged in the feeding box, the lifting assembly comprises a plurality of lifting sliding rails fixedly connected inside the feeding box, lifting threaded sliding blocks capable of moving up and down are slidably arranged in the lifting sliding rails, a vibrating rod and a clamping block are installed on the lifting threaded sliding blocks, the uniform feeding assembly helps the material to be uniformly distributed and leveled, the lifting assembly realizes the lifting of the crucible and the vibration and compaction of the material, manual participation is not needed in the feeding process, the influence of human factors is reduced, the silicon carbide crystal is relatively regular in shape, and the waste in subsequent processing is reduced.
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