CN103849925A - An improved crucible used for ingot casting - Google Patents
An improved crucible used for ingot casting Download PDFInfo
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- CN103849925A CN103849925A CN201210502639.0A CN201210502639A CN103849925A CN 103849925 A CN103849925 A CN 103849925A CN 201210502639 A CN201210502639 A CN 201210502639A CN 103849925 A CN103849925 A CN 103849925A
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- crucible
- improved
- crucible body
- salt type
- type coating
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Abstract
The invention discloses an improved crucible used for ingot casting. The improved crucible comprises a crucible body. The improved crucible is characterized in that: the side wall and the bottom of the crucible body are both provided with grooves, the angles between the side walls of the grooves and the crucible body are acute angles, the inner surface of the crucible body is provided with a salt coating, and the salt coating is provided with a high-purity quartz glass inner layer. The improved crucible is advantageous in that the grooves can effectively prevent floating of crystals, and the coating in the crucible body can effectively inhibit dispersion of the internal impurities of the crucible, thus increasing the utilization rate of a crystal ingot and increasing the conversion rate of a battery.
Description
Technical field
The present invention relates to a kind of crucible, relate in particular to a kind of improved crucible for casting ingots.
Background technology
Along with the maturation gradually of photovoltaic power generation technology, the application of solar cell is also flourish, solar cell is formed on silicon substrate conventionally, this silicon substrate can be rendered as that silicon single crystal sinks to the bottom or multicrystalline silicon substrate, at present, to obtain the common methods of silicon substrate be by the fusing of silicon material, solidifies and cut.Crucible is the container for loading polycrystalline silicon raw material, but in crystal is melted in crucible, easily occur that crystal floats, affect the generation of silicon single crystal, in ingot casting, generally in industry spray high-purity silicon nitride at inner surface of crucible, suppress reacting of silicon and crucible, reduce the introducing of oxygen in silicon ingot, played demoulding effect simultaneously, but silicon nitride can not effectively suppress the diffusion of the metallic impurity elements in crucible, cause the utilization ratio of crystal ingot not high, battery efficiency is also affected.
Summary of the invention
The object of this invention is to provide a kind of improved crucible for casting ingots.
The technical solution used in the present invention is:
A kind of improved crucible for casting ingots, comprise crucible body, sidewall and the bottom of described crucible body are equipped with groove, and the sidewall of described groove and crucible body are acute angle, the internal surface of described crucible body is provided with salt type coating, on described salt type coating, is also provided with pure quartz glass internal layer.
The number of degrees of described acute angle are 50 °≤α≤80 °.
Described crucible body is quartz ceramic crucible.
The thickness of described salt type coating is 1-2mm.
The thickness of described pure quartz glass internal layer is 3-5mm.
Advantage of the present invention is: groove is floating of crystal effectively, and the intrinsic coating of crucible can effectively suppress the diffusion of the inner impurity of crucible, has improved the utilization ratio of crystal ingot and the turnover ratio of battery.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Wherein: 1, crucible body, 2, groove, 3, salt type coating, 4, pure quartz glass internal layer.
Embodiment
As shown in Figure 1, the crucible for casting ingots of a modification of the present invention, comprise crucible body 1, the sidewall of crucible body 1 and bottom are equipped with groove 2, and the sidewall of groove 2 and crucible body 1 are 50 ° of angles, and the internal surface of crucible body 1 is provided with salt type coating 3, on salt type coating 3, be also provided with pure quartz glass internal layer 4, crucible body 1 is quartz ceramic crucible, and the thickness of salt type coating 3 is 1mm, and the thickness of pure quartz glass internal layer 4 is 3mm.Groove 2 is floating of crystal effectively, and the coating in crucible body 1 can effectively suppress the diffusion of the inner impurity of crucible, has improved the utilization ratio of crystal ingot and the turnover ratio of battery.
As shown in Figure 1, the crucible for casting ingots of a modification of the present invention, comprise crucible body 1, the sidewall of crucible body 1 and bottom are equipped with groove 2, and the sidewall of groove 2 and crucible body 1 are 65 ° of angles, and the internal surface of crucible body 1 is provided with salt type coating 3, on salt type coating 3, be also provided with pure quartz glass internal layer 4, crucible body 1 is quartz ceramic crucible, and the thickness of salt type coating 3 is 1.5mm, and the thickness of pure quartz glass internal layer 4 is 4mm.Groove 2 is floating of crystal effectively, and the coating in crucible body 1 can effectively suppress the diffusion of the inner impurity of crucible, has improved the utilization ratio of crystal ingot and the turnover ratio of battery.
As shown in Figure 1, the crucible for casting ingots of a modification of the present invention, comprise crucible body 1, the sidewall of crucible body 1 and bottom are equipped with groove 2, and the sidewall of groove 2 and crucible body 1 are 80 ° of angles, and the internal surface of crucible body 1 is provided with salt type coating 3, on salt type coating 3, be also provided with pure quartz glass internal layer 4, crucible body 1 is quartz ceramic crucible, and the thickness of salt type coating 3 is 2mm, and the thickness of pure quartz glass internal layer 4 is 5mm.Groove 2 is floating of crystal effectively, and the coating in crucible body 1 can effectively suppress the diffusion of the inner impurity of crucible, has improved the utilization ratio of crystal ingot and the turnover ratio of battery.
Claims (5)
1. an improved crucible for casting ingots, comprise crucible body, it is characterized in that: sidewall and the bottom of described crucible body are equipped with groove, the sidewall of described groove and crucible body are acute angle, the internal surface of described crucible body is provided with salt type coating, on described salt type coating, is also provided with pure quartz glass internal layer.
2. the improved crucible for casting ingots of one according to claim 1, is characterized in that: the number of degrees of described acute angle are 50 °≤α≤80 °.
3. the improved crucible for casting ingots of one according to claim 1, is characterized in that: described crucible body is quartz ceramic crucible.
4. the improved crucible for casting ingots of one according to claim 1, is characterized in that: the thickness of described salt type coating is 1-2mm.
5. the improved crucible for casting ingots of one according to claim 1, is characterized in that: the thickness of described pure quartz glass internal layer is 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502639.0A CN103849925A (en) | 2012-11-30 | 2012-11-30 | An improved crucible used for ingot casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502639.0A CN103849925A (en) | 2012-11-30 | 2012-11-30 | An improved crucible used for ingot casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103849925A true CN103849925A (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210502639.0A Pending CN103849925A (en) | 2012-11-30 | 2012-11-30 | An improved crucible used for ingot casting |
Country Status (1)
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| CN (1) | CN103849925A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6106610A (en) * | 1997-09-30 | 2000-08-22 | Heraeus Quarzglas Gmbh & Co. Kg | Quartz glass crucible for producing silicone single crystal and method for producing the crucible |
| CN1417387A (en) * | 2001-10-16 | 2003-05-14 | 日本超精石英株式会社 | Surface modifying method for quartz glass crucible and surface modified crucible |
| CN101570391A (en) * | 2009-06-10 | 2009-11-04 | 黄洁 | Process for producing arc quartz crucible by vacuum plus coating, equipment, product thereof |
| CN201506711U (en) * | 2009-09-30 | 2010-06-16 | 常州天合光能有限公司 | Crucible for casting ingot |
| CN102605418A (en) * | 2012-01-16 | 2012-07-25 | 上澎太阳能科技(嘉兴)有限公司 | Solar cell substrate, manufacturing method of solar cell and crucible used for same |
| CN202543392U (en) * | 2012-01-16 | 2012-11-21 | 上澎太阳能科技(嘉兴)有限公司 | Crucible for producing silicon ingot |
-
2012
- 2012-11-30 CN CN201210502639.0A patent/CN103849925A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6106610A (en) * | 1997-09-30 | 2000-08-22 | Heraeus Quarzglas Gmbh & Co. Kg | Quartz glass crucible for producing silicone single crystal and method for producing the crucible |
| CN1417387A (en) * | 2001-10-16 | 2003-05-14 | 日本超精石英株式会社 | Surface modifying method for quartz glass crucible and surface modified crucible |
| CN101570391A (en) * | 2009-06-10 | 2009-11-04 | 黄洁 | Process for producing arc quartz crucible by vacuum plus coating, equipment, product thereof |
| CN201506711U (en) * | 2009-09-30 | 2010-06-16 | 常州天合光能有限公司 | Crucible for casting ingot |
| CN102605418A (en) * | 2012-01-16 | 2012-07-25 | 上澎太阳能科技(嘉兴)有限公司 | Solar cell substrate, manufacturing method of solar cell and crucible used for same |
| CN202543392U (en) * | 2012-01-16 | 2012-11-21 | 上澎太阳能科技(嘉兴)有限公司 | Crucible for producing silicon ingot |
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| PB01 | Publication | ||
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Application publication date: 20140611 |