Click here to read about a current PBS documentary on glass. The feature on the history of glass can be viewed online through November 5th. And in case you missed it, see our blog on art glassblowing and scientific glassblowing.
Deltech manufactures batch size and small production scale glass melt furnaces for operation from 1550-1800 deg C. Bottom load designs are commonly preferred because they allow rapid removal and quench of the melts. Top hat models are ideal for applications in which the glass needs to remain absolutely stable during the entire melt process, such as in the manufacture of gradient lenses. Top hat furnaces feature a fixed load platform; it is the furnace body that moves up and down.
Deltech’s glass melt furnaces were originally developed in conjunction with Sandia Laboratories, and are often termed “workhorses” by the researchers and manufacturers who keep them in service on a continuous basis. The ceramic lining is highly resistant to the chemical attack that comes from outgassing.