Nanjing Electric Insulators puts their trust in SORG
Nanjing Electric Insulator is the largest producer of electrical insulators for high-voltage transmission lines in China. The insulators produced are subject to a very tight glass chemistry specification, which is different for direct current (DC) and alternating current (AC) insulators. With an article weight of up to 12kg, extreme demands are placed on the glass in terms of homogeneity, melting relics and inclusions from unmolten batch particles and seeds. Later failures of the insulators are not permitted.
SORG originally received an order in 2014 for a regenerative end-port furnace with a working end and two forehearths for the manufacture of insulators. The first furnace delivered exceeded the requirements regarding the factors mentioned above and the operating time. Nanjing Electric Insulator has now commissioned a further system.
To comply with the Chinese government's new emission regulations, a SORG VSM type all-electric melter was specially designed for the production of soda lime flint glass for the production of the insulators. The furnace is charged with the batch via the well-proven rotating crown, while Top electrodes ensure the energy input into the melt. A filter cleans the superstructure atmosphere.
To meet the high demand of glass quality, the facility has a SORG CONTI-DRAIN systems installed on both the throat of the furnace and in the forehearth channel. Furthermore, the company’s universal stirrer unit is installed in the forehearth.
The customer was highly satisfied with the supplied technology and emphasised the outstanding service and support. In a gracious ceremony, some of the SORG employees were made honorary members of the Nanjing Electric company.
