An automatic overheating process

Abstract

The invention provides an automatic overheating process. In the process of stabilizing the temperature, after the seed crystal is automatically dropped, the overheating welding is performed within the overheating welding time, which includes the following steps: S1: measure the diameter of the seed crystal and time it, and record the seed The maximum value of the crystal diameter; S2: Automatically adjust the temperature according to the liquid surface temperature of the silicon solution, and adjust the liquid surface temperature of the silicon solution to the welding temperature; S3: Perform overheating welding and timing, and record the minimum diameter of the seed crystal during the timing process S4: Calculate the superheated diameter reduction difference of the seed crystal, and judge whether the superheating is completed according to the superheated diameter reduction difference. The beneficial effect of the present invention is to perform automatic overheating according to the operation steps of manually determining the overheating of the seed crystal, automatically detect the phenomenon of diameter shrinkage of the seed crystal when overheating, avoid the waste of working hours and the occurrence of abnormal accidents due to insufficient manual experience, and shorten the temperature stabilization process. Working hours, increase production, and improve the competitiveness of enterprises.

Description

technical field [0001] The invention belongs to the technical field of Czochralski single crystals, and in particular relates to an automatic overheating process. Background technique [0002] At present, the competition in the industry is increasingly fierce, and cost reduction and efficiency increase have become a magic weapon for an enterprise to stand still. At present, in the production process of solar photovoltaic materials manufacturing, except for the equal diameter process state (which has been realized automatically), the operation is the most difficult and time consuming. The state of the process is to stabilize the temperature. At present, the manual temperature stabilization method is commonly used in the industry. The manual temperature stabilization method is very dependent on operating experience, and requires continuous attention of the operator, which takes up a lot of labor and practice. [0003] The current industry average level of manual temperature s...

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the problem to be solved by the present invention is to provide an automatic overheating process, which can automatically detect the phenomenon of diameter shrinkage when the seed crystal is overheated when it is applied in the temperature stabilization process. The degree of automation is high, and the working hours caused by insufficient manual experience Waste and Occurrence of Unusual Accidents