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Cutting mould and cutting method for recycling single-lobe block body of graphite crucible

The technology of a graphite crucible and a cutting method is applied in the field of regeneration and utilization of a graphite crucible single-lobed block, which can solve the problems of short service life, high production cost, and scrapping of the graphite crucible single-lobed block, and achieves convenient implementation, convenient operation and low cost. low cost effect

Inactive Publication Date: 2015-03-18
NINGXIA LONGI SILICON MATERIALS +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention discloses a cutting mold for regeneration and utilization of graphite crucible single-lobe blocks, which solves the problem of directly scrapping the entire single-lobe block after the corrosion of the R part of the graphite crucible single-lobe block in the prior art, so that the graphite crucible single-lobe block can be used The problem of short life and high production cost

Method used

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  • Cutting mould and cutting method for recycling single-lobe block body of graphite crucible
  • Cutting mould and cutting method for recycling single-lobe block body of graphite crucible
  • Cutting mould and cutting method for recycling single-lobe block body of graphite crucible

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Experimental program
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Effect test

Embodiment 1

[0030] The three-lobe graphite crucible structure is transformed into a four-lobe graphite crucible structure to realize recycling.

[0031]The circular radian of each single-valve block A11 to be repaired of the three-valve crucible is 120°. The mold inner mold 8 and the outer mold 7 are fixed on the base plate 10, and the assembled base plate 10 is installed on the cutting machine with screws. Insert the single-lobe block A11 upside down into the interlayer between the inner mold 8 and the outer mold 7, insert the angle gauge 5 into the angle notch groove 6, one side of the single-lobe block is close to the angle gauge 5, and tighten it with the fine-tuning pin 9 Fix the crucible, fasten the single-lobe block A11 on the outer mold 7, and cut the cutting tool 3 along the vertical section 4 of the single-lobe block A11 to the inner surface of the crucible at the rotation angle R1 (10-15° angle). The single-lobe block A11 is cut vertically until the resection site 2 (shaded pa...

Embodiment 2

[0033] The four-petal graphite crucible structure is transformed into a six-petal graphite crucible structure to realize recycling.

[0034] The circular radian of each single-lobe block C to be repaired of the four-lobe single-lobe block is an angle of 90°. The mold inner mold 8 and the outer mold 7 are fixed on the base plate 10, and the assembled base plate 10 is installed on the cutting machine with screws. Insert the single-lobe block C upside down into the interlayer between the inner mold 8 and the outer mold 7, insert the angle gauge 5 into the angle notch groove 6, one side of the single-lobe block C is close to the angle gauge 5, and use the fine-tuning pin 9 Tighten the crucible, fasten the single-lobe block C on the outer mold 7, and cut the cutting tool 3 along the vertical section 4 of the single-lobe block C to the inner surface of the crucible at the rotation angle R1 (10-15° angle), Cut along the vertical direction of the single-lobe block C until the resecti...

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Abstract

The invention discloses a cutting mould for recycling a single-lobe block body of a graphite crucible. An inner mould and an outer mould are fixedly arranged at a base plate and are suspended at the center of a circle, and the inner mould is provided with a plurality of fine-tuning pin fastening crucible block bodies. The invention further discloses a method for recycling the single-lobe block body of the graphite crucible by utilizing the device. The method comprises the following steps of: rotating two connection sections of waste single-lobe block bodies of the graphite crucible due to R part corrosion thinning in monocrystalline silicon production process towards the inner wall around the center of the circle by 10-30 DEG, cutting off vertical sections with thinned R parts in a parallel direction of the section, and re-splicing to obtain a set of graphite crucible of 360 DEG, thus the recycling of the graphite crucible is realized. According to the cutting mould and the method disclosed by the invention, the recycling of the thinned single-lobe block body of the graphite crucible needing to be scrapped is realized.

Description

technical field [0001] The invention belongs to the technical field of monocrystalline silicon production by the Czochralski method, and relates to a cutting mold for recycling a graphite crucible single-lobe block, and also relates to a method for recycling a graphite crucible single-lobe block by using the cutting mold. Background technique [0002] The growth method of single crystal silicon is mainly represented by the Czochralski method (Czochralski method). The main components that make up the thermal field of the Czochralski single crystal furnace include graphite crucibles assembled from single-petal blocks, heat insulators, heaters, heat screens, heat preservation cylinders, crucible holders, heat preservation covers, etc. [0003] The single-lobe block in the following text refers to the single-lobe block with a circumferential radian of 120° or 90° or other angles used in the existing multi-lobed graphite crucibles. The main function of graphite crucible is to su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28D1/22C30B15/10
Inventor 陈海云秦秀珍
Owner NINGXIA LONGI SILICON MATERIALS
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