Mortar cutting and diamond wire cutting is now the main areas of photovoltaic silicon ingot slicing technology, which was first used in the mortar cutting industrial and prevailed for a long period of time, but with the advancement of technology and people's pursuit of efficiency and cost reduction mentioning the continuous improvement of environmental awareness, mortar cutting technology gradually exposed slice of low efficiency, high consumption without environmental shortcomings, increasingly unable to keep pace with modern industry forward. In 2010, the diamond wire cutting technology for its high efficiency, low loss and environmental advantages fling, and has been fully applied to the cutting of monocrystalline silicon, but the diamond wire cutting multicrystalline silicon wafers fewer defects and stubborn cutting lines as well as non crystal layer is present, so that the process can not be applied to conventional texturing polycrystalline diamond cutting sheet, thereby impeding the diamond wire cutting technique polysilicon field full coverage
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