When glass components are being shaped, mechanical stresses are generated. With soda-lime and borosilicate glass, these stresses can be reduced with defined, slow cooling in the temperature range between 600 °C and 400 °C. The relevant temperature range and the duration of the cooling process depend on the specific type of glass and the geometry of the components. Nabertherm offers various solutions for annealing/cooling glass. Brick-insulated chamber furnaces (models N ../G) have been an established solution since many years in numerous workshops and used e. g. for device manuctacturing. All standard controllers allow cooling times to be set as a defined time or as a cooling gradient to enable slow, specific cooling. If the furnace cools faster than the specified rate, the controller automatically starts heating so that the temperature does not fall too quickly.

Forced convection furnaces are especially suitable for cooling technical glass components, fiber optics and optical components, where good temperature uniformity and temperature control is very important. With all product lines, the furnaces can be customized with an extensive range of additional equipment to suit the customer’s specific needs.