CN112239915A - Spirally woven crucible-side preform and carbon-carbon crucible-side prepared from same - Google Patents

Spirally woven crucible-side preform and carbon-carbon crucible-side prepared from same Download PDF

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Publication number
CN112239915A
CN112239915A CN202011129198.5A CN202011129198A CN112239915A CN 112239915 A CN112239915 A CN 112239915A CN 202011129198 A CN202011129198 A CN 202011129198A CN 112239915 A CN112239915 A CN 112239915A
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CN
China
Prior art keywords
crucible
carbon fiber
spiral
woven
axial
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Pending
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CN202011129198.5A
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Chinese (zh)
Inventor
申富强
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Q Carbon Material Co ltd
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Q Carbon Material Co ltd
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Priority to CN202011129198.5A priority Critical patent/CN112239915A/en
Publication of CN112239915A publication Critical patent/CN112239915A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/06—Braid or lace serving particular purposes
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/02—Elements
    • C30B29/06—Silicon
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B35/00—Apparatus not otherwise provided for, specially adapted for the growth, production or after-treatment of single crystals or of a homogeneous polycrystalline material with defined structure
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/02—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof made from particular materials
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Ceramic Products (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

The invention provides a spirally woven crucible side preform, which is woven by carbon fiber ropes or belts, and comprises a plurality of axial strips, wherein the carbon fiber ropes or belts are spirally woven around the axial strips. The utility model provides a crucible nation circumference intensity increase, the upper and lower diameter is more accurate, adopts the spiral to weave, weaves simplyr.

Description

Spirally woven crucible-side preform and carbon-carbon crucible-side prepared from same
Technical Field
The invention relates to application of a fiber composite material in the manufacturing process of monocrystalline silicon or polycrystalline silicon, in particular to a spirally-woven crucible-side preform woven by the fiber composite material and a carbon-carbon crucible-side prepared by the same.
Background
In the production of crystals, there is a crucible as one component, and the material of the crucible is generally graphite, ceramic, metal, etc., and there are problems such as cracking and erosion deterioration of the crucible. Moreover, as the diameter of the grown crystal grows thicker and thicker, the diameter of the corresponding furnace is made larger and larger, and thus the reliability of the thermal field is required to be higher and higher. Due to the limitation of crucible bond strength of the existing crucible, the larger the diameter is, the larger the wall thickness requirement is, the heavy weight is, the high heat capacity is, the heavy operation is caused, the energy consumption is increased, and the cost is increased.
Thus, the crucible of the prior art crucible also has a place to lift.
Disclosure of Invention
In view of the above-mentioned drawbacks, the present invention provides a spirally woven crucible-side preform woven from a fiber composite material and a carbon-carbon crucible made from the same, so as to solve the problems of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a crucible bang preform that spiral was woven, crucible bang preform is woven by one or many carbon fiber rope or area and is formed, crucible bang preform includes several axial strips, one or many the carbon fiber rope or area wind axial strip spiral is woven.
According to the crucible pot precursor of the spiral weaving of this application preferred embodiment, crucible pot precursor includes: well ring portion and the edge sealing portion of at least one end, wherein, well ring portion is an annular cavity dictyosome, well ring portion includes a plurality of axial strip, axial strip and one or many the carbon fiber rope or the area spiral braid direction's contained angle is for being greater than 70 degrees and being less than 90 degrees.
According to the crucible pot precursor of the spiral weaving of this application preferred embodiment, crucible pot precursor includes: the middle ring part is an annular hollow reticular body and comprises a plurality of axial strips, and the included angle between each axial strip and one or more carbon fiber ropes or carbon fiber ropes in the spiral weaving direction is larger than 70 degrees and smaller than 90 degrees.
According to the spiral-woven crucible pot preform in the preferred embodiment of the application, the axial strips are surrounded by one or more carbon fiber ropes or belts and are interwoven and connected at the outer side and the inner side at the inner side.
The utility model provides a carbon crucible nation that spiral was woven, the crucible nation is woven by one or many carbon fiber rope or area and is formed, the crucible nation includes several axial strip, one or many the carbon fiber rope or area wind axial strip spiral is woven, and carbon fiber surface and between with cladding or packing deposit carbon layer or sclerosis material layer.
A spiral-woven carbon crucible pot according to a preferred embodiment of the present application, said crucible pot comprising: well ring portion and the edge sealing portion of at least one end, wherein, well ring portion is an annular cavity dictyosome, well ring portion includes a plurality of axial strip, axial strip and one or many the carbon fiber rope or the area spiral braid direction's contained angle is for being greater than 70 degrees and being less than 90 degrees.
A spiral-woven carbon crucible pot according to a preferred embodiment of the present application, said crucible pot comprising: the middle ring part is an annular hollow reticular body and comprises a plurality of axial strips, and the included angle between each axial strip and one or more carbon fiber ropes or carbon fiber ropes in the spiral weaving direction is larger than 70 degrees and smaller than 90 degrees.
According to the preferred embodiment of the application, the spiral woven carbon crucible pot is characterized in that the axial strips are surrounded by one or more carbon fiber ropes or belts and are interweaved and connected at the outer side and the inner side at the inner side.
Due to the adoption of the technical characteristics, compared with the prior art, the invention has the following advantages and positive effects:
firstly, the crucible pot has the advantages that the circumferential strength is increased, and the upper diameter and the lower diameter are more accurate;
secondly, the crucible pot is woven in a spiral mode, and weaving is simpler;
third, the crucible of this application has designed the axial strip, can ensure rigidity and the intensity of crucible bang direction of height.
Of course, it is not necessary for any particular embodiment of the inventive concept to be implemented to achieve all of the above technical effects at the same time.
Drawings
FIG. 1 is a schematic view of a crucible of the present application;
FIG. 2 is a schematic view of another crucible pot of the present application;
FIG. 3 is a schematic view of a fiber braided tube;
FIG. 4 is one of the weaving diagrams;
FIG. 5 is a second schematic view of knitting;
fig. 6 is a third schematic diagram of knitting.
Detailed Description
Several preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to only these embodiments. The invention is intended to cover alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the invention. In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, and so forth have not been described in detail so as not to unnecessarily obscure aspects of the present invention.
The core thought of this application lies in, and the crucible of preparation crucible is bound and is woven by one or more carbon fiber rope or area and form, the crucible is bound at first need be woven into the preform with one or more carbon fiber rope or area, the preform refers to does not have the body of weaving before the densification sclerosis, then obtains the crucible of sclerosis through the densification processing and bind. The densification hardening includes vapor deposition, liquid deposition, sintering, etc., which are well known technologies and will not be described herein. The support intensity of crucible direction of height has been strengthened to the perpendicular to axial strip of crucible banger, and the level is to the crucible banger circumference intensity increase of spiral weaving, and the diameter is more accurate from top to bottom, adopts the spiral to weave, weaves simplely, has reduced the preparation time, greatly reduced material cost and use cost, and so-called spiral is one kind and is liked the twisted grain curve of spiral and screw.
The present application will be described in detail below with reference to the accompanying drawings. Referring to fig. 1, a schematic view of a crucible of the present application is a crucible of a spirally woven crucible cover, the crucible is woven by one or more carbon fiber ropes or belts, and one or more carbon fiber ropes or belts are one of carbon fibers, ceramic fibers or metal fibers.
As described above, the crucible end first needs to be woven into a preform from fibers, that is, the spirally woven crucible end preform in the present application, which is referred to as a crucible end preform in the following description. The crucible nation preform is woven by one or many carbon fiber rope or area and is formed, the crucible nation preform includes several axial strips, one or many the carbon fiber rope or area wind axial strip spiral is woven.
An embodiment of the crucible pot preform of this application is: in this embodiment, the crucible pot preform includes: the number of the edge sealing portions is two in the embodiment of fig. 1, that is, the upper edge sealing portion 11 and the lower edge sealing portion 13, but it cannot be used to limit the present application, and it is only necessary to omit one of them, which is the protection scope of the present application, the upper edge sealing portion 11, the middle ring portion 12 and the lower edge sealing portion 13 are connected in sequence, wherein the middle ring portion is an annular hollow net-shaped body, the middle ring portion includes a plurality of axial strips 50, an included angle between the axial strips 50 and one or more carbon fiber ropes or belts 30 in the spiral knitting direction is greater than 70 degrees and less than 90 degrees, the axial strips 50 are surrounded by one or more carbon fiber ropes or belts 30 inside and outside, and are interlaced and connected at least one time outside and one time inside. Further, the upper and lower seal portions 11 and 13 are annular bodies woven from one or more of the carbon fiber ropes or tapes 30, and the upper and lower seal portions 11 and 13 are woven in a different manner from the middle ring portion 12, and the upper and lower seal portions 11 and 13 are woven more densely than the middle ring portion 12 in fig. 1.
Another embodiment of the crucible pot preform of the application is: the crucible pot preform includes: the middle ring part 12 is an annular hollow netted body, the middle ring part 12 comprises a plurality of axial strips 50, the included angle between the axial strips 50 and one or more carbon fiber ropes or belts in the spiral weaving direction is larger than 70 degrees and smaller than 90 degrees, the axial strips are surrounded by one or more carbon fiber ropes or belts inside and outside, and the axial strips are connected in an interweaving mode at the outer side and the inner side at the same time.
The weave pattern of the above-described embodiment is referred to as a spiral weave pattern. When spirally woven, the middle ring portion includes a plurality of axial strips 50 for support, so that there may be no seal portion, or the seal portion may simply wrap around, rather than being solid.
The spirally woven carbon crucible pot made of the crucible pot prefabricated body is called the crucible pot for short in the following description.
The crucible cover 10 comprises a plurality of axial strips 50, the crucible cover 10 is formed by weaving one or more carbon fiber ropes or belts 30, carbon fiber surfaces (the surfaces of the carbon fiber ropes or belts after being hardened are called as the carbon fiber surfaces) and deposited carbon layers or hardened substance layers coated or filled between the carbon fiber surfaces, and the hardened substances can be silicon carbide, silicon nitride or other ceramics and the like; axial strip 50 and one or many carbon fiber rope or area 30 is in same curved surface, one or many carbon fiber rope or area twine the cladding axial strip 50, the axial strip is on a parallel with the center pin of crucible nation, one or many carbon fiber rope or area 30 spiral is woven axial strip 50.
An embodiment of the crucible pot of the application is: the crucible pot 10 comprises: the present invention relates to a carbon fiber rope or belt 30, and more particularly, to a carbon fiber rope or belt 12, and more particularly, to a carbon fiber rope or belt 30, which comprises a middle ring part 12 and at least one end sealing part, wherein in the embodiment of fig. 1, the number of the sealing parts is two, that is, an upper sealing part 11 and a lower sealing part 13, but it should not be limited to this application, and less than one of them, as long as they can be stably connected, should be within the scope of this application, and the upper sealing part 11, the middle ring part 12 and the lower sealing part 13 are connected in sequence, wherein the middle ring part 12 is an annular hollow body having a substantially cylindrical hollow shape with openings on the upper surface and the lower surface, the middle ring part 12 includes a plurality of axial strips 50, the axial strips 50 form an included angle with a spiral weaving direction of one or more carbon fiber ropes or belts 30 of more than 70 degrees and less than 90 degrees.
In the embodiment shown in fig. 1, the angle of the one or more carbon fiber ropes or belts 30 spirally woven into the axial strips is 89 degrees, but the angle is not limited to the application, and the axial strips 50 are parallel to the central axis of the crucible pot, so long as the angle is small and the circumferential strength is high. Each of the one or more carbon fiber ropes or belts 30 includes a plurality of fiber yarns, the center of the rope is the fiber yarn parallel to the axis of the rope, and the fiber yarn parallel to the axis is covered with a fiber braided tube 40, wherein the fiber braided tube 40 is as shown in fig. 3.
The plurality of axial strips 50 may be pre-embedded, and the term "pre-embedded axial strips" means that a designed number of hard axial strips are axially inserted into a predetermined position, and then one or more carbon fiber ropes or tapes are wrapped around and cover the axial strips. The hard axial strip is one of a carbon rod, a graphite rod, a high-temperature ceramic rod and a high-temperature metal rod, and the axial strip is parallel to the central shaft of the crucible pot. When a rigid axial strip is used, the axial strip and the upper and lower sealing edge portions 11 and 13 may be unconnected or in contact.
The upper edge sealing part 11 and the lower edge sealing part 13 are annular bodies and are formed by weaving one or more carbon fiber ropes or belts 30, so that the tail end of the edge sealing is not easy to loosen. Referring to fig. 1, when the axial strips 50 are connected with the middle ring part 12, the axial strips are surrounded by one or more carbon fiber ropes or belts inside and outside the middle ring part, and the axial strips 50 are interlaced and connected at an outer time when meeting the middle ring part 12 from top to bottom or from bottom to top; the axial strips 50 can secure the height of the crucible pot 10 because they are parallel to the central axis.
The axial strips 50 are connected to the one or more carbon fiber ropes or strips 30 in a spirally woven manner, so that the mesh body can be enlarged in the circumferential direction when a force expanding in the circumferential direction acts on the crucible, thereby absorbing the expansion in the circumferential direction. Therefore, breakage of the fiber is unlikely to occur, the shape is not largely lost, and thus the crucible has excellent shape stability. And only one direction of weaving mode is available, so that the weaving is simpler.
The carbon fiber ropes are each formed by bundling about several tens of thousands of fibers. As the fibers constituting the carbon fiber rope or tape, pitch-based fibers, PAN-based fibers, viscose-based fibers, and the like can be used. The fibers making up the carbon fiber rope or tape may be of the same material or of different materials.
The upper and lower hem portions 11 and 13 are knitted or woven, and as shown in fig. 4, 5 and 6, the upper and lower hem portions 11 and 13 are formed by knitting one or more carbon fiber ropes or tapes 30 in various knitting manners.
In addition, the axial strips 50 may be longer, and both ends of the axial strips are respectively connected with the upper sealing edge part 11 and the lower sealing edge part 13 to increase the strength; when the axial strips are made of soft materials such as carbon fiber ropes, the upper edge sealing part is connected with the axial strips in a weaving mode, and the lower edge sealing part can also be connected with the axial strips in a weaving mode. In general, the axial strips may or may not be connected to the upper and lower hem portions 11, 13. If the connection is carried out, the connection is suitable for the axial strips and the carbon fiber ropes, so that the connection can be fixed together with the circumferential carbon fiber ropes in a mixed manner. The connection is generally not required because the circumferential carbon fiber rope has already tightly fixed the axial strips, and the axial strips are connected with the upper sealing edge part 11 and the lower sealing edge part 13 in a contact manner.
Another embodiment of the crucible pot of the present application is: referring to fig. 2, another crucible end of the present application is schematically illustrated, and this embodiment is different from the embodiment of fig. 1 in that there are no upper and lower sealing edge portions, and the crucible end has only a middle ring portion 12; the crucible nation is woven by one or more carbon fiber rope or area and is formed, the crucible nation includes several axial strip 50, axial strip 50 and one or many carbon fiber rope or area are in same curved surface, the axial strip is on a parallel with the center pin of crucible nation, one or many carbon fiber rope or area twine around the cladding axial strip, one or many carbon fiber rope or area spiral are woven the axial strip, axial strip and one or many the carbon fiber rope or area spiral weave the contained angle of direction and be greater than 70 degrees and be less than 90 degrees, as shown in fig. 2, in this embodiment, one or many carbon fiber rope or area spiral are woven the angle of axial strip is 89 degrees, but can not be used to restrict this application, and the angle is little as long as can guarantee that circumference intensity is big, should be the protection scope of this application. As shown in fig. 2, the crucible cover in this embodiment does not have an upper edge sealing portion and a lower edge sealing portion, and after one or more carbon fiber ropes or belts are spirally woven into the axial strip, the carbon fiber ropes or belts are fixed at both ends to ensure that the carbon fiber ropes or belts do not loosen and do not need to be densely woven.
The weave pattern of this embodiment we refer to as a spiral weave pattern. When the spiral weaving is carried out, the middle ring part comprises a plurality of axial strips for supporting, so that the edge sealing part can be omitted, or the edge sealing part can be simply surrounded and is not in a compact shape.
The crucible of this application adopts fibre combined material's carbon fiber rope or area 30 to weave, need not make the idiosome, the shape of crucible does not receive the restriction of idiosome, can design in a flexible way, because raw materials specification is unified, can batch production, and production efficiency improves greatly moreover, do not need binder sintering or vapor deposition or liquid phase deposition simultaneously in crucible manufacture process, only need weave at the crucible and carry out the carbonization after accomplishing, man-hour shortens greatly, so the cost is lower, delivery cycle is short, easily supply.
In summary, due to the adoption of the technical characteristics, compared with the prior art, the invention has the following advantages and positive effects:
firstly, the crucible pot has the advantages that the circumferential strength is increased, and the upper diameter and the lower diameter are more accurate;
secondly, the crucible pot is woven in a spiral mode, and weaving is simpler;
third, the crucible of this application has designed the axial strip, can ensure rigidity and the intensity of crucible bang direction of height.
The preferred embodiments of the invention are provided solely to aid in the illustration of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents. The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and it is intended that all equivalent variations and modifications of the present invention as those skilled in the art can be made without departing from the spirit and scope of the present invention.

Claims (8)

1. The utility model provides a crucible nation preform that spiral was woven, its characterized in that, crucible nation preform is woven by one or many carbon fiber rope or area and is formed, crucible nation preform includes many root axial strips, one or many the carbon fiber rope or area wind axial strip spiral is woven.
2. The spiral-woven crucible pot preform of claim 1, wherein the crucible pot preform comprises: well ring portion and the edge sealing portion of at least one end, wherein, well ring portion is an annular cavity dictyosome, well ring portion includes a plurality of axial strip, axial strip and one or many the carbon fiber rope or the area spiral braid direction's contained angle is for being greater than 70 degrees and being less than 90 degrees.
3. The spiral-woven crucible pot preform of claim 1, wherein the crucible pot preform comprises: the middle ring part is an annular hollow reticular body and comprises a plurality of axial strips, and the included angle between each axial strip and one or more carbon fiber ropes or carbon fiber ropes in the spiral weaving direction is larger than 70 degrees and smaller than 90 degrees.
4. The spiral-woven crucible pot preform of claim 1, 2, or 3, wherein the axial strips are surrounded by one or more carbon fiber ropes or tapes, one outside and one inside, interweaved for connection.
5. The utility model provides a carbon crucible bang of spiral weaving, its characterized in that, the crucible bang is woven by one or many carbon fiber rope or area and is formed, the crucible bang includes several axial strips, one or many the carbon fiber rope or area wind axial strip spiral is woven, and the carbon fiber surface is with between the cladding or fill deposit carbon layer or sclerosis thing layer.
6. The spiral-woven carbon crucible pot of claim 5, wherein the crucible pot comprises: well ring portion and the edge sealing portion of at least one end, wherein, well ring portion is an annular cavity dictyosome, well ring portion includes a plurality of axial strip, axial strip and one or many the carbon fiber rope or the area spiral braid direction's contained angle is for being greater than 70 degrees and being less than 90 degrees.
7. The spiral-woven carbon crucible pot of claim 5, wherein the crucible pot comprises: the middle ring part is an annular hollow reticular body and comprises a plurality of axial strips, and the included angle between each axial strip and one or more carbon fiber ropes or carbon fiber ropes in the spiral weaving direction is larger than 70 degrees and smaller than 90 degrees.
8. The spiral-woven carbon crucible pot of claim 6 or 7, wherein the axial strips are surrounded by one or more carbon fiber ropes or tapes, one outside and one inside, interweaved for connection.
CN202011129198.5A 2020-10-21 2020-10-21 Spirally woven crucible-side preform and carbon-carbon crucible-side prepared from same Pending CN112239915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011129198.5A CN112239915A (en) 2020-10-21 2020-10-21 Spirally woven crucible-side preform and carbon-carbon crucible-side prepared from same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011129198.5A CN112239915A (en) 2020-10-21 2020-10-21 Spirally woven crucible-side preform and carbon-carbon crucible-side prepared from same

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CN112239915A true CN112239915A (en) 2021-01-19

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