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Grinding wheel for photovoltaic glass machining and preparation method thereof

A photovoltaic glass and grinding wheel technology, applied in the field of grinding wheels, can solve the problems of unstable use quality of grinding wheels, limited processing speed, poor chip removal, etc., and achieve the effects of good sharpness and deformation resistance, long service life and stable quality.

Active Publication Date: 2020-04-17
苏州赛尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For edging wheels for photovoltaic glass, conventional grinding wheels mostly use copper-tin-iron-nickel as the matrix formula. This formula is modified by adding iron and nickel on the basis of the copper-tin formula, with copper-iron-nickel as the skeleton and low-melting tin powder as the Binder, iron and diamond have good wettability, the contact angle is 50°, which is far better than copper, while nickel has good wear resistance and toughness, and is infinitely soluble with copper, and can reduce copper and iron The sintering loss of the low melting point metal tin in the base formula, but the carcass formula has a fatal weakness, the sharpness is poor, the quality of the grinding wheel is unstable, and edge chipping caused by poor chip removal often occurs, and because it is not sharp enough, the processing speed is limited , causing certain troubles to manufacturers

Method used

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  • Grinding wheel for photovoltaic glass machining and preparation method thereof
  • Grinding wheel for photovoltaic glass machining and preparation method thereof
  • Grinding wheel for photovoltaic glass machining and preparation method thereof

Examples

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preparation example Construction

[0024] The preparation method of the grinding wheel for photovoltaic glass processing disclosed by the invention is as follows:

[0025] (1) Mix metal powder and ball mill to obtain a metal matrix; the metal powder is composed of copper powder, tin powder, cobalt powder and chromium powder;

[0026] (2) Mix the metal matrix and diamond to obtain the material;

[0027] (3) Cold pressing the material to obtain a green body;

[0028] (4) The green body is sintered and hot forged to obtain a grinding wheel for photovoltaic glass processing.

Embodiment

[0030] Mixing: Add the metal powder into the ball mill according to the formula requirements in terms of mass percentage, add alcohol with a total weight of 25% of the metal powder, and then put in zirconium balls, the ratio of ball to material is 2:1 (wt%), and the speed is 500 rpm. Mix and carry out ball milling for 100 minutes, take out the material and dry it, then put it into a V-type mixer, add acetone with 10% of the total mass of metal powder, add diamond after mixing for 120 minutes (the volume ratio of metal matrix to diamond is 75: 25), after mixing for 60 minutes, pass through a 120# sieve (120 microns) after drying to obtain a uniformly mixed material;

[0031] Pressing: the above materials are added to the existing mold and placed on a hydraulic press, and a pressure of 4 tons / cm is applied 2 , keep the pressure for 10 seconds; then reverse the mold up and down and apply a pressure of 4 tons / cm 2 , hold the pressure for 10 seconds, thereby making a cold-pressed ...

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Abstract

The invention discloses a grinding wheel for photovoltaic glass machining and a preparation method thereof. Copper powder, tin powder, cobalt powder and chromium powder are mixed, then ball milling isconducted, a metal base is obtained and is mixed with diamond, and materials are obtained. The materials are subjected to cold pressing to obtain a blank, and the blank is subjected to sintering andhot forging to obtain the grinding wheel for photovoltaic glass machining. The grinding wheel for photovoltaic glass machining prepared with the formula provided by the invention has the characteristics of being high in holding force, good in sharpness, long in service life and the like, machining requirements of photovoltaic glass machining can be met, photovoltaic glass of 3.5 mm is cut, edge breakage is lower than 20 [mu]m, and the blade cutting life can reach 50000 m.

Description

technical field [0001] The invention belongs to the technical field of grinding wheels, and in particular relates to a grinding wheel for photovoltaic glass processing and a preparation method thereof. Background technique [0002] Crystalline silicon solar cells are developing rapidly, but monocrystalline silicon has poor mechanical properties, is easily damaged, and is easily corroded. Therefore, photovoltaic glass is usually used for packaging to protect the battery and prolong its service life. The processing of photovoltaic glass has therefore attracted great attention, and diamond grinding wheels have emerged as the times require. For edging wheels for photovoltaic glass, conventional grinding wheels mostly use copper-tin-iron-nickel as the matrix formula. This formula is modified by adding iron and nickel on the basis of the copper-tin formula, with copper-iron-nickel as the skeleton and low-melting tin powder as the Binder, iron and diamond have good wettability, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24D3/34
CPCB24D3/346B24D18/0009
Inventor 张莹莹王思宇李威夏磊冉隆光
Owner 苏州赛尔科技有限公司
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