Reverse cutting method for diamond wire

Abstract

The invention relates to a reverse cutting method for a diamond wire. A reverse wire distribution and reverse cutting formula is adopted. The method includes the following steps that firstly, wire distribution before cutting is conducted; secondly, the reverse cutting technology formula is guided in; thirdly, the direction of a water spraying opening of a cabinet is adjusted; fourthly, cutting isstarted; and fifthly, tool withdrawing is conducted, wherein the cutting coordinate value is paid attention to after reverse cutting is started according to the practical cutting position, and cuttingis stopped after the final point coordinate position is reached. By means of the reverse cutting method for the diamond wire, the defects of an existing cutting technology are overcome, the squaringlosses are greatly reduced on the basis of the existing technology, the squaring efficiency is improved, unsmooth rear way transferring brought by abnormal squaring wire cutting is reduced, and normaloperation of production is ensured to a great degree.

Description

technical field [0001] The invention belongs to the technical field of squaring solar cell crystal ingots, and in particular relates to a diamond wire reverse cutting method. Background technique [0002] At present, in the polycrystalline ingot prescribing process, the process method adopted is generally: using a steel wire with mortar to cut or a diamond wire to square the entire ingot. In the conventional process of squaring polycrystalline ingots, the use of diamond wire cutting can greatly improve efficiency. In order to ensure the quality and cost of cutting, this requires that the large ingot be cut as quickly as possible during the entire squaring process. Fewer raw and auxiliary materials are used, but in the actual production operation process, there are many factors that will cause the diamond wire to break, increase the cost, reduce the efficiency, and cause the quality to decrease. What is more serious is that the tail of the diamond wire is broken and the stee...

AI Technical Summary

Problems solved by technology

In the conventional process of squaring polycrystalline ingots, the use of diamond wire cutting can greatly improve efficiency. In order to ensure the quality and cost of cutting, this requires that the large ingot be cut as quickly as possible during the entire squaring process. Use less raw and auxiliary materials, but in the actual production operation process, there are many factors that will cause the diamond wire to break, increase the cost, reduce the efficiency, and cause the quality to decrease

What's more serious is that the tail of the diamond wire is broken and the problem of the steel wire being stuck after the break is more likely to cause a large amount of edge chipping loss and even cause the entire polysilicon ingot to be scrapped.

[0003] The problem of wire breakage in the production process is affected by the machine, raw and auxiliary materials, processes, and human operations, so it is difficult to eliminate. Once the wire breakage occurs, the wire cannot be recut and the steel wire is stuck inside the large ingot. As a result, the entire large ingot cannot be prescribed, and the quality is often seriously lost at this time

This is a huge waste of production capacity in terms of the entire large ingot prescribing process, which brings great losses