Rod sticking method and method for cutting and casting polysilicon rod

Abstract

The invention discloses a rod sticking method adopted in a cast polycrystalline silicon rod cutting technology. The rod sticking method comprises the following steps that silicon rods with the surfaces being well ground are stuck to a base according to different partitions and are solidified, so that a silicon rod group is formed and stands to be cut for use. The invention further provides a method for cutting cast polycrystalline silicon rods. The method for cutting the cast polycrystalline silicon rods comprises the following steps of S1 sticking the rods, S2 distributing lines of a line network; S3 adjusting gaps of the line networks; and S4 conducting cutting, wherein after cutting is completed, stopping is conducted, and the silicon rod group is taken down, adhesive on silicon wafers formed through cutting is removed, the silicon wafers are cleaned and sorted, and then processing of polycrystalline silicon wafers is completed. By the adoption of the rod sticking method and the method for cutting the cast polycrystalline silicon rods, the wear of cutting lines during line distribution and cutting can be reduced, so that the cutting efficiency is improved, and the cutting cost is reduced.

Description

technical field [0001] The invention relates to the technical field of slicing processing of cast polysilicon rods, in particular to a sticking method in the process of cutting and casting polysilicon rods and a method for cutting and casting polysilicon rods. Background technique [0002] As the energy crisis and environmental problems such as smog and greenhouse effect become more and more serious, energy transformation is imminent. Due to the advantages of clean, pollution-free and large reserves of photovoltaic energy, the photovoltaic industry has received strong support from governments of various countries, has made great progress in technology, and has been more and more widely used. Solar energy has become one of the most promising new energy sources today. . [0003] In the past ten years, with the escalation of photovoltaic trade disputes and market fluctuations, the photovoltaic industry has experienced overcapacity, but the market demand for photovoltaic clean ...

AI Technical Summary

Problems solved by technology

For polycrystalline, which occupies more than 70% of the market share, diamond wire cutting technology is the only direction, but compared with single crystal, polycrystalline has a higher elastic modulus than single crystal due to its higher dislocation and grain boundary density. Single crystal 30-50%; and the high proportion of hard spots in polycrystalline silicon rods makes polycrystalline silicon wafers have certain technical obstacles in diamond wire cutting

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