CN104357896A - Molybdenum draft tube for monocrystalline silicon preparation - Google Patents
Molybdenum draft tube for monocrystalline silicon preparation Download PDFInfo
- Publication number
- CN104357896A CN104357896A CN201410560296.2A CN201410560296A CN104357896A CN 104357896 A CN104357896 A CN 104357896A CN 201410560296 A CN201410560296 A CN 201410560296A CN 104357896 A CN104357896 A CN 104357896A
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- CN
- China
- Prior art keywords
- draft tube
- flow guiding
- inner draft
- guiding cylinder
- external flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a molybdenum draft tube for monocrystalline silicon preparation. The molybdenum draft tube comprises an outer draft tube, an inner draft tube and a bolt and is characterized in that the outer draft tube is made of graphite materials and is of a flange structure, a taper hole is formed in the central position of the bottom surface of the outer draft tube, a circular boss is formed in the top surface of the taper hole, the inner draft tube is arranged in an inner hole of the outer draft tube in a sleeving way, a circular groove is formed in the central position of the bottom surface of the inner draft tube, the circular groove of the inner draft tube is clamped on the boss of the outer draft tube, the inner draft tube is of a flange structure, the flange bottom surface of the inner draft tube is fixedly arranged on the flange top surface of the outer draft tube through the bolt, and the inner draft tube is made of molybdenum materials. The molybdenum draft tube has the benefits that the service life of the draft tube is prolonged, and the operation strength is also reduced; the molybdenum draft tube is quick in heat radiation, so that the monocrystal pulling speed can be improved.
Description
Technical field
The present invention relates to solar-photovoltaic technology field, particularly relate to a kind of molybdenum guide shell prepared for silicon single crystal.
Background technology
Prepare in the production of silicon single crystal in vertical pulling method, because the guide shell that graphite is made must be used, be used for controlling air-flow pulling monocrystal, and first guide shell will to be suspended on above weight 6 hours, then put down again after waiting silicon material to change into liquid and be suspended on insulation and cover greatly face, every stove will through tens hours high temperature, furnace high-temperature temperature is all more than 1600 degree, add that existing graphite piece guide shell is divided into inside and outside to be two-layerly combined into, inner draft tube wall thickness only has 1cm, so often in use directly can fall into inside silicon liquid because of external flow guiding cylinder fracture, whole stove silicon material is caused to be scrapped, very large financial loss is caused to company.
Summary of the invention
According to above deficiency, the invention provides that a kind of structure is simple, the life-span is long and improves the molybdenum guide shell prepared for silicon single crystal of pulling rate.
For achieving the above object, the present invention is used for molybdenum guide shell prepared by silicon single crystal, main contents are: comprise external flow guiding cylinder, inner draft tube and bolt, it is characterized in that, described external flow guiding cylinder is that graphite material is made, external flow guiding cylinder is flange plate structure, external flow guiding cylinder bottom center position is processed with taper hole, described taper hole end face is processed with a round boss, described inner draft tube is enclosed within external flow guiding cylinder endoporus, there is a circular groove inner draft tube bottom center position, described inner draft tube groove is stuck on external flow guiding cylinder boss, described inner draft tube is flange plate structure, inner draft tube flange bottom is bolted on external flow guiding cylinder flange end face, described inner draft tube is that Mo is made.
The effect that the present invention is useful is: not only extend guide shell work-ing life, but also alleviate manipulation strength, and molybdenum guide shell rapid heat dissipation, pulling speed can be improved, more add safety coefficient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Description of reference numerals:
1-external flow guiding cylinder, 2-inner draft tube, 3-bolt, 101-taper hole, 102-boss, 201-groove.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the invention is described:
These system main contents are: comprise external flow guiding cylinder 1, inner draft tube 2 and bolt 3, it is characterized in that, described external flow guiding cylinder 1 is made for graphite material, external flow guiding cylinder 1 is flange plate structure, external flow guiding cylinder 1 bottom center position is processed with taper hole 101, described taper hole 101 end face is processed with a round boss 102, described inner draft tube 2 is enclosed within external flow guiding cylinder 1 endoporus, there is a circular groove 201 inner draft tube 2 bottom center position, described inner draft tube 2 groove 201 is stuck on external flow guiding cylinder 1 boss 102, described inner draft tube 2 is flange plate structure, inner draft tube 2 flange bottom is bolted on external flow guiding cylinder 1 flange end face, described inner draft tube 2 is made for Mo.
Described bolt 3 is material Mo.
Described external flow guiding cylinder 1 and inner draft tube 2 thickness are all 5 ~ 10mm.
By reference to the accompanying drawings the preferred embodiment for the present invention is explained in detail above, but the invention is not restricted to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from present inventive concept.
Do not depart from the spirit and scope of the present invention and can make other changes many and remodeling.Should be appreciated that and the invention is not restricted to specific embodiment, scope of the present invention is defined by the following claims.
Claims (4)
1. for molybdenum guide shell prepared by silicon single crystal, comprise external flow guiding cylinder (1), inner draft tube (2) and bolt (3), it is characterized in that, described external flow guiding cylinder (1) is made for graphite material, external flow guiding cylinder (1) is flange plate structure, external flow guiding cylinder (1) bottom center position is processed with taper hole (101), described taper hole (101) end face is processed with a round boss (102), described inner draft tube (2) is enclosed within external flow guiding cylinder (1) endoporus, there is a circular groove (201) inner draft tube (2) bottom center position, described inner draft tube (2) groove (201) is stuck on external flow guiding cylinder (1) boss (102), described inner draft tube (2) is flange plate structure, inner draft tube (2) flange bottom is bolted on external flow guiding cylinder (1) flange end face, described inner draft tube (2) is made for Mo.
2. the molybdenum guide shell prepared for silicon single crystal as claimed in claim 1, is characterized in that: described bolt (3) is material Mo.
3. the molybdenum guide shell prepared for silicon single crystal as claimed in claim 1, is characterized in that: described external flow guiding cylinder (1) and inner draft tube (2) coordinate contact position to be provided with gasket.
4. the molybdenum guide shell prepared for silicon single crystal as claimed in claim 1, is characterized in that: described external flow guiding cylinder (1) and inner draft tube (2) thickness are all 5 ~ 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560296.2A CN104357896A (en) | 2014-10-19 | 2014-10-19 | Molybdenum draft tube for monocrystalline silicon preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560296.2A CN104357896A (en) | 2014-10-19 | 2014-10-19 | Molybdenum draft tube for monocrystalline silicon preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104357896A true CN104357896A (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410560296.2A Pending CN104357896A (en) | 2014-10-19 | 2014-10-19 | Molybdenum draft tube for monocrystalline silicon preparation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104357896A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521616A (en) * | 2016-12-13 | 2017-03-22 | 宝鸡市宏佳有色金属加工有限公司 | Single crystal furnace quartz guide cylinder |
| CN106521617A (en) * | 2016-12-13 | 2017-03-22 | 宝鸡市宏佳有色金属加工有限公司 | Molybdenum guide cylinder and single crystal furnace |
| CN111270301A (en) * | 2018-12-04 | 2020-06-12 | 上海新昇半导体科技有限公司 | Guide cylinder of crystal growth furnace and crystal growth furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201793810U (en) * | 2010-09-30 | 2011-04-13 | 常州天合光能有限公司 | Flow guide tube of direct pulling single crystal furnace |
| CN202323100U (en) * | 2011-11-07 | 2012-07-11 | 东方电气集团峨嵋半导体材料有限公司 | Straight-pull eight-inch silicon single crystal thermal field |
| CN202643894U (en) * | 2012-06-05 | 2013-01-02 | 镇江大成新能源有限公司 | Enhanced guide cylinder of single crystal furnace |
| CN202786496U (en) * | 2012-06-19 | 2013-03-13 | 中国电子科技集团公司第四十六研究所 | Composite heat shielding device applied to single crystal furnace |
-
2014
- 2014-10-19 CN CN201410560296.2A patent/CN104357896A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201793810U (en) * | 2010-09-30 | 2011-04-13 | 常州天合光能有限公司 | Flow guide tube of direct pulling single crystal furnace |
| CN202323100U (en) * | 2011-11-07 | 2012-07-11 | 东方电气集团峨嵋半导体材料有限公司 | Straight-pull eight-inch silicon single crystal thermal field |
| CN202643894U (en) * | 2012-06-05 | 2013-01-02 | 镇江大成新能源有限公司 | Enhanced guide cylinder of single crystal furnace |
| CN202786496U (en) * | 2012-06-19 | 2013-03-13 | 中国电子科技集团公司第四十六研究所 | Composite heat shielding device applied to single crystal furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521616A (en) * | 2016-12-13 | 2017-03-22 | 宝鸡市宏佳有色金属加工有限公司 | Single crystal furnace quartz guide cylinder |
| CN106521617A (en) * | 2016-12-13 | 2017-03-22 | 宝鸡市宏佳有色金属加工有限公司 | Molybdenum guide cylinder and single crystal furnace |
| CN111270301A (en) * | 2018-12-04 | 2020-06-12 | 上海新昇半导体科技有限公司 | Guide cylinder of crystal growth furnace and crystal growth furnace |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |
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| RJ01 | Rejection of invention patent application after publication |