Method for preparing carbon fiber guide wheel for cutting silicon chips and carbon fiber guide wheel

Abstract

The invention discloses a method for preparing a carbon fiber guide wheel for cutting silicon chips and the carbon fiber guide wheel, and belongs to the field of silicon chip processing equipment. The preparation method comprises the following steps: (1) heating resin in a drying oven for 1-2 hours, adding a curing agent, and uniformly stirring in vacuum at a high speed; (2) preheating a metal core mold for 1-2 hours, and lifting the metal core mold on a three-dimensional winding machine for fixation; (3) performing a layer paving design; (4) winding to form the winding angles of carbon fiber yarns layer by layer according to a sequence from the interior to exterior; (5) performing stepped heating and cutting on the metal core mold wound with carbon fibers; and (6) accurately grinding cured carbon fiber tubes to a specified guide wheel size, and performing fixed-length cutting, so as to obtain a carbon fiber guide wheel roller. The carbon fiber guide wheel is manufactured by one-step winding, one-step curing and one-step outer surface machining, the manufacturing process is simplified, the production period is greatly shortened, and the easy layering risk due to repeated winding is reduced. Moreover, the manufactured guide wheel is high in strength, stable in quality and low in cost.

Description

technical field [0001] The invention relates to a method for preparing a guide wheel and the guide wheel, more specifically, to a method for preparing a carbon fiber guide wheel for cutting silicon wafers and the carbon fiber guide wheel. Background technique [0002] In recent years, my country's photovoltaic industry has achieved rapid development. The output of polycrystalline silicon wafers accounts for about 70% of the world's output. Usher in greater development. The production of polysilicon wafers is inseparable from multi-wire cutting equipment. The guide wheel is an important component of the multi-wire cutting equipment, but the service life of the guide wheel is generally short, so the guide wheel needs to be replaced frequently, which has a certain impact on the cutting of polycrystalline silicon wafers. At present, the domestically produced cutting guide wheels mainly include steel guide wheels, polyurethane fiber guide wheels and carbon fiber guide wheels. B...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of existing carbon fiber guide wheels such as complex production process, long production cycle, low guide wheel strength, and high price, and provide a method for preparing a carbon fiber guide wheel for cutting silicon wafers and a carbon fiber guide wheel. The technical scheme of the present invention uses one carbon fiber winding, one curing and one outer surface machining to complete the production of the carbon fiber guide wheel, which simplifies the production process, greatly shortens the production cycle, and reduces the risk of easy delamination of multiple windings; production The completed guide wheel has high strength, stable quality and low cost

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