CN102335970A - Control device of quality of slice mortar - Google Patents
Control device of quality of slice mortar Download PDFInfo
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- CN102335970A CN102335970A CN2011102178359A CN201110217835A CN102335970A CN 102335970 A CN102335970 A CN 102335970A CN 2011102178359 A CN2011102178359 A CN 2011102178359A CN 201110217835 A CN201110217835 A CN 201110217835A CN 102335970 A CN102335970 A CN 102335970A
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- mortar
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Abstract
The invention relates to a control device of quality of slice mortar, which is characterized in that: a metal particle absorption system is arranged in a slicing device to absorb metal particles or metal ions in mortar, and is arranged in a mortar circulation and filtration system inside the slicing device, and/or arranged in the mortar circulation and filtration system outside the slicing device, and the metal particle absorption system absorbs the metal particles or metal ions in the mortar through a porous magnet. In the invention, the metal particle absorption system is additionally arranged in the slice mortar circulation and filtration system, so that the impact of metal particles or metal ions in the mortar on the suspension ability of PEG (polyethylene glycol) and the dispersion of silicon carbide in PEG is reduced, thereby the proportion of cracked slices, thick slices, stria slices, corner-unfilled slices and chips in the slicing process is reduced, and meanwhile, the TTV (total thickness variation) and striae of the cut silicon wafer are obviously reduced, and the quality of the silicon wafer is obviously improved, accordingly, a guarantee is further provided for the yield of the silicon wafer at a battery terminal.
Description
Technical field
The present invention relates to a kind of control device of the mortar quality of cutting into slices.
Background technology
Main method to single polycrystalline crystal block slicing has two kinds at present: the one, and the single polycrystalline crystal block of diamond dust grinding that utilizes the drive of steel wire high-speed cruising to be suspended among the PEG is realized section; The 2nd, directly utilize the surface to inlay or be coated with the single polycrystalline crystal block realization of the Buddha's warrior attendant line high-speed motion grinding section of the high rigidity material of eka-gold emery.First method is owing to its process stabilizing at present, and integrated cost has than clear superiority, and this dicing method is all adopted in domestic batch process.Yet compare second method, first kind of slice process need be used steel wire, when the steel wire high-speed motion drives the single polycrystalline crystal block of sand grinding; Itself also is worn steel wire; Usually the wear extent of steel wire does not wait to tens um from several um, because the small sized metallic particle that steel wire is got off by grinding is easy to be suspended in the mortar usually in the magnitude less than 1um; Be prone to cause mortar degradation and cutting power to weaken; Have like the ferrous components in the steel wire and to be partially soluble in mortar, cause the possibility of dirty generation, and make and reclaim mortar quality descend (metal cation component rising) in the whole mortar circulatory system; Thereby increased the ratio of latent sliver, thickness sheet, stria sheet, unfilled corner sheet and fragment in the slicing processes, section yield and benefit are affected.
About metallic particles or metal ion content in the mortar in single polycrystalline crystal block slicing process the influence of chipping qualities still there is not detailed research report both at home and abroad at present; Have no more about can be actively the effective method report of metallic particles or metal ion content in the control mortar; Thereby metallic particles or metal ion are to the influence of mortar cutting power in the reduction mortar, and then reduce latent sliver, thickness sheet, stria sheet, unfilled corner sheet and fragment ratio in single polycrystalline crystal block slicing.
Summary of the invention
Technical problem to be solved by this invention is: improve a kind of control device of the mortar quality of cutting into slices, reduced the ratio of latent sliver, thickness sheet, stria sheet, unfilled corner sheet and fragment in the slicing processes.
The present invention solves the scheme that its technical problem adopts: a kind of control device of the mortar quality of cutting into slices; Metallic particles or metal ion in the metallic particles absorption system absorption mortar are set in chopper and slicer; The metallic particles absorption system is installed in interior mortar circulation of chopper and slicer and the filtration system, and/or is installed in outer mortar circulation of chopper and slicer and the filtration system.
The metallic particles absorption system absorbs metallic particles or metal ion in the mortar through magnet.
Magnet is a cellular.
The invention has the beneficial effects as follows: the present invention is through adding metallic particles absorption system (like magnet) in circulation of section mortar and filtration system; Metallic particles in the mortar or metal ion have been reduced to the dispersed influence in PEG of the suspending power of PEG and diamond dust; Use behind the metallic particles absorption system in the mortar metallic particles or metal ion obviously to reduce; Thereby reduced the ratio of latent sliver, thickness sheet, stria sheet, unfilled corner sheet and fragment in the slicing processes; TTV, the stria of the silicon chip of cutting have obvious reduction simultaneously, and the silicon chip quality is obviously improved, and this further provides assurance for silicon chip at the yield of battery-end.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified;
Fig. 1 is a structural representation of the present invention;
Among the figure, 1. chopper and slicer; 2. line cutting chamber; 3. mortar circulates and filtration system in the chopper and slicer; 4. the outer mortar of chopper and slicer circulates and filtration system; 5. metallic particles absorption system.
The specific embodiment
As shown in Figure 1; A kind of control device of the mortar quality of cutting into slices; Has line cutting chamber 2 in the chopper and slicer 1; Mortar circulation and filtration system 3 and be installed in circulation in outer mortar circulation of chopper and slicer and the filtration system 4 in the online cutting chamber of mortar 2, the chopper and slicer are provided with metallic particles or metal ion in the metallic particles absorption system 5 absorption mortars in chopper and slicer; Metallic particles absorption system 5 is installed in interior mortar circulation of chopper and slicer and the filtration system, and/or is installed in outer mortar circulation of chopper and slicer and the filtration system.
Metallic particles absorption system 5 absorbs metallic particles or metal ion in the mortar through magnet.
Magnet is a cellular.
The slice process method of the control device of this section mortar quality is following:
(1), to polycrystalline ingot carry out evolution, detect, block, technology such as chamfering, flour milling processes finished product polycrystalline piece; For monocrystal rod block, detection, flaw-piece amputation, block, technology such as chamfering, flour milling processes finished product monocrystalline crystal block;
(2), finished product crystal block and auxiliary material such as glass plate are placed on are covered with the flexible glue leather packing and are equipped with in the ultrasonic bath of suitable quantity of water and clean;
(3), the ready brilliant holder aluminium sheet of particular design especially its mucilage glue surface is cleaned up and coat special glue, the glass plate that clean dry is special is pasted on aluminium sheet central authorities, guarantees that through pressurization glass and aluminium sheet adhesion are firm;
(4), will join and after glue evenly is applied to glass pane surface in right amount the finished product crystal block sticked at the glass blocks surface, guarantee that crystal block is parallel with the glass plate edge face, while crystal block length can not surpass glass plate;
(5), through suitable hardening time, be installed on the board of cutting into slices to the crystalline substance holder that is stained with crystal block and cut into slices;
(6), crystal block slicing finish after rod down, just can be packaged into finished product through operations such as cleaning, sorting, tests.
The present invention will describe through embodiment, but embodiment is not as to further restriction of the present invention.Present embodiment adopts MB-264, MB-271, DJZG and HCT-B-50 checking, uses back silicon chip chipping qualities obviously to improve, and uses normal battery technology for cutting silicon chip, also improves in the yield and the efficient of battery-end.
Claims (3)
1. control device of mortar quality of cutting into slices; It is characterized in that: metallic particles or metal ion in the metallic particles absorption system absorption mortar are set in chopper and slicer; The metallic particles absorption system is installed in interior mortar circulation of chopper and slicer and the filtration system, and/or is installed in outer mortar circulation of chopper and slicer and the filtration system.
2. according to the control device of the section mortar quality shown in the claim 1, it is characterized in that: described metallic particles absorption system absorbs metallic particles or metal ion in the mortar through magnet.
3. according to the control device of the section mortar quality shown in the claim 2, it is characterized in that: described magnet is a cellular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102178359A CN102335970A (en) | 2011-07-30 | 2011-07-30 | Control device of quality of slice mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102178359A CN102335970A (en) | 2011-07-30 | 2011-07-30 | Control device of quality of slice mortar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102335970A true CN102335970A (en) | 2012-02-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102178359A Pending CN102335970A (en) | 2011-07-30 | 2011-07-30 | Control device of quality of slice mortar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102335970A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900860A (en) * | 2019-12-10 | 2020-03-24 | 西安奕斯伟硅片技术有限公司 | Mortar tank, cutting device and crystal bar cutting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127777A (en) * | 1994-10-25 | 1996-07-31 | 信越半导体株式会社 | Liquid for cutting, preparation of same and method for cutting crystalised block |
| JP2005029741A (en) * | 2003-07-11 | 2005-02-03 | Skt:Kk | Method for making porous material waterproof |
| CN2911893Y (en) * | 2006-04-26 | 2007-06-13 | 边志贵 | Magnet for preparing magnetized liquid |
| CN201776182U (en) * | 2010-08-13 | 2011-03-30 | 上海超日(洛阳)太阳能有限公司 | Mortar purifying device |
| CN102101326A (en) * | 2010-12-15 | 2011-06-22 | 湖南宇晶机器实业有限公司 | Method and device for recycling multi-thread cutting machine mortar |
-
2011
- 2011-07-30 CN CN2011102178359A patent/CN102335970A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127777A (en) * | 1994-10-25 | 1996-07-31 | 信越半导体株式会社 | Liquid for cutting, preparation of same and method for cutting crystalised block |
| JP2005029741A (en) * | 2003-07-11 | 2005-02-03 | Skt:Kk | Method for making porous material waterproof |
| CN2911893Y (en) * | 2006-04-26 | 2007-06-13 | 边志贵 | Magnet for preparing magnetized liquid |
| CN201776182U (en) * | 2010-08-13 | 2011-03-30 | 上海超日(洛阳)太阳能有限公司 | Mortar purifying device |
| CN102101326A (en) * | 2010-12-15 | 2011-06-22 | 湖南宇晶机器实业有限公司 | Method and device for recycling multi-thread cutting machine mortar |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900860A (en) * | 2019-12-10 | 2020-03-24 | 西安奕斯伟硅片技术有限公司 | Mortar tank, cutting device and crystal bar cutting method |
| CN110900860B (en) * | 2019-12-10 | 2021-11-02 | 西安奕斯伟材料科技有限公司 | Mortar tank, cutting device and crystal bar cutting method |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120201 |