Fret bar for ingot slicing, ingot to which fret bar is stuck, and ingot cutting method using fret bar

An ingot and column technology, used in metal sawing equipment, fine working devices, stone processing equipment, etc., can solve the problems of reduced contact position accuracy, uneven spacing of cut surfaces, and poor work efficiency, and achieves cutting. Volume reduction, unevenness reduction, unevenness reduction effect

Inactive Publication Date: 2011-06-01
SHINANO ELECTRIC REFINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it takes time to form the bent state of the wire required for cutting the ingot, so there is a problem of poor work efficiency.
In addition, there is a problem that the accuracy of the contact position between the metal wire and the ingot is lowered, and the interval of the cut surface is not uniform.

Method used

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  • Fret bar for ingot slicing, ingot to which fret bar is stuck, and ingot cutting method using fret bar
  • Fret bar for ingot slicing, ingot to which fret bar is stuck, and ingot cutting method using fret bar
  • Fret bar for ingot slicing, ingot to which fret bar is stuck, and ingot cutting method using fret bar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Prepare a quadrangular prism solar cell polysilicon ingot (square section of 156 mm, length 200 mm), and use an adhesive to cut the section in a direction perpendicular to its length to a height of 5 mm and a slightly rectangular shape of 10 mm wide. The ingot slicing column of a rectangular prism-shaped synthetic resin columnar body with a length of 200 mm is attached to the vicinity of the center of the ingot surface on the side where the multi-wire saw starts cutting along the longitudinal direction of the ingot (see image 3 ).

[0051] Such as image 3 The silicon ingot thus obtained was sliced ​​with a multi-wire saw made of piano wire as shown in FIG. The experimental conditions at this time are: the average running speed of the metal wire is 600mm / min, the tension of the metal wire is 22N, the cutting speed is 0.35mm / min, the diameter of the metal wire is 0.12mm, and the distance between the metal wires is 0.34mm.

[0052] As a result, the thickness of the obt...

Embodiment 2

[0054] Prepare a quadrangular prism solar cell polysilicon ingot (square section of 156 mm, length 200 mm), cut along the length direction of the above-mentioned ingot in a direction perpendicular to the length direction, and the cross section is approximately rectangular with a height of 7 mm and a width of 3 mm, and A 200mm-long quadrangular prism-shaped synthetic resin column-shaped ingot slicing column, each one is attached to a pair of opposite ingot surfaces adjacent to the ingot surface on the side where the multi-wire saw starts cutting with an adhesive. On each surface of the side surface, make it exceed the angles formed by the surface of the ingot and the pair of opposite sides by 0.4 mm (refer to Figure 4 ).

[0055] Such as Figure 4 The silicon ingot thus obtained was sliced ​​with a multi-wire saw made of piano wire as shown in FIG. The experimental conditions at this time are: the average running speed of the metal wire is 600 mm / min, the tension of the meta...

Embodiment 3

[0058]Prepare a quadrangular prism solar cell polysilicon ingot (square section of 156mm, length 200mm), along the length direction of the above ingot, the cross section when cut along the direction perpendicular to the length direction is 7mm high, slightly rectangular with a width of 4mm, and A 200mm-long quadrangular prism-shaped synthetic resin column for ingot slicing, one for each column, respectively attached to the c (chamfer) adjacent to the ingot surface on the side where the multi-wire saw starts cutting. ) surface (see Figure 5 ).

[0059] Such as Figure 5 The silicon ingot thus obtained was sliced ​​with a multi-wire saw made of piano wire as shown in FIG. The experimental conditions at this time are: the average running speed of the metal wire is 600 mm / min, the tension of the metal wire is 22 N, the cutting speed is 0.35 mm / min, the diameter of the metal wire is 0.12 mm, and the distance between the metal wires is 0.34 mm.

[0060] As a result, the thicknes...

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Abstract

The present invention provides a fret bar for ingot slicing, an ingot to which the fret bar is stuck, and an ingot cutting method using the fret bar. The object of the invention is to, in cutting an ingot by using a multi-wire saw, to improve material use efficiency by reducing variations in thickness among wafers to be obtained to thereby reduce material loss in cutting and improve working efficiency by shortening the time required for slicing. Means for solving problems is that in cutting an ingot by a multi-wire saw, a fret bar for ingot slicing is used in order to form notches at the start of the cutting. The fret bar for ingot slicing is characterized by being a columnar body stuck along the length direction of the ingot to a portion of the surface of the ingot.

Description

technical field [0001] The present invention relates to a column for slicing an ingot used when cutting an ingot thinly into wafers with a multi-wire saw, an ingot with the column attached, and an ingot cutting method using the column. Background technique [0002] In recent years, due to the rising awareness of environmental protection, solar cells that can directly convert light energy into electrical energy have attracted attention as a clean and renewable energy source, and are widely used in consumer equipment, housing equipment, transportation equipment, and road management facilities. , communication facilities and other fields. Generally speaking, solar cells can be classified into silicon, compound, organic, etc. according to the type of materials used. Silicon-based solar cells are currently becoming the mainstream due to their excellent power generation efficiency and other advantages. [0003] Silicon substrates used for silicon-based solar cells are wafers obt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28D5/04B24B27/06H01L21/304
CPCB23D57/0061B28D5/045B24B27/0633Y02P80/30
Inventor 小林正人岛冈庆一
Owner SHINANO ELECTRIC REFINING
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