Epoxy Resin Vacuum Casting Post-curing Technology

Abstract

The invention discloses a post-curing process of epoxy resin vacuum pouring. The process is carried out sequentially according to the steps of demoulding, entering the furnace, constant temperature, and cooling; the demoulding: the mold that has been cured in the early stage is removed from the drying box, After dismantling the mold fasteners, remove the mold components in turn, and remove the pouring body; the furnace: wrap the pouring body with a thermal insulation cover and place it on a special tray, and remove the thermal insulation cover after moving it into a constant temperature drying box; the constant temperature , set the constant temperature value of the computer controlling the drying oven to 135°C, and the time is 10h-24h; for the cooling, set the temperature value of the computer controlling the drying oven from 135°C to 70°C over 6h-18h. In this application, the pouring body is demolded and then wrapped in a thermal insulation sleeve into the furnace. The drying oven is automatically controlled by constant temperature and cooling. After being out of the furnace, the thermal insulation sleeve is wrapped in a slow temperature drop. The overall process scheme is simple to operate, further improving work efficiency, and can save the occupation of the drying oven. time.

Description

technical field [0001] The invention belongs to the field of transformer insulation pouring, in particular to an epoxy resin vacuum pouring post-curing process. Background technique [0002] Epoxy resin vacuum casting insulation is the process insulation method commonly used in the current transformer industry. It has nearly 50 years of production experience in my country. With the continuous development of the process equipment industry, the epoxy resin vacuum casting process is also constantly improving. Compared with the mature epoxy resin dry insulation, there are still some imperfections in the process. The related process or literature mainly revolves around the epoxy resin gel curing and demoulding at high temperature, and then adopts a drying oven for post-curing at a constant temperature. The curing temperature is only It can be controlled by setting the temperature of the drying oven, that is, the quality of the overall insulating pouring is related to the control of...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems that the internal stress of epoxy resin gel curing cannot be well released and the process is not perfect in the existing process, the present invention provides a post-curing process of epoxy resin vacuum casting with simple operation and high production efficiency

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