Mortar cutting and king diamond wire cutting is now the main silicon ingot slicing technology in the field of photovoltaics, in which mortar cutting was first applied to industrialization and prevailed for a long period of time, but with the progress of science and technology and people's pursuit of reduced efficiency and the continuous improvement of environmental awareness, mortar cutting technology gradually exposed the low efficiency of slices, The disadvantages of high losses and environmental protection are increasingly unable to keep up with the advance of modern industry. In 2010, The King Kong wire cutting technology with its high efficiency, low loss and environmental protection advantages, and has been fully applied to the cutting of single crystal silicon, but due to the king gold wire cutting polysilicon wafers less defects and stubborn cutting patterns and the presence of amorphous layers, so that the traditional velvet process can not be applied to the King Kong wire cutting polysilicon wafers, This in turn hinders the comprehensive coverage of the gold wire cutting technology in the field of polysilicon, so it is necessary to develop one or more velvet technology suitable for king gang cutting polysilicon, so as to further promote the development of King Kong wire cutting technology
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