Salt Bath Furnaces for Chemical Hardening of Glass

Chemical hardening is mostly applied for the solidification of thin glasses with a thickness of up to 3 mm.
Chemical pretensioning is recommended because the surface flatness can be maintained. Producers of
copy machines, solar modules, microwave devices, measuring instruments as well as companies in the
lighting industry, the automotive industry and other users of flat glass need to apply the toughest
possible glass in their products. Nearly all glasses containing a large percentage of sodium can be strengthened by means of ion exchange.

• Tmax up to 750 °C or 1000 °C in the salt bath
• Safety technology in accordance with EN 605192
• Bath temperature control
• Electric (TS) all-round heating or gas heating (TSB)
• Removable collar plate made of solid steel
• Insulated swing-a-way lid
• Optimum temperature uniformity according to DIN 17052-1 up to ΔT 4 K in the bath
• Over-temperature limit controller in the furnace chamber to prevent dangerous conditions for the furnace or personnel
• Bath control of salt bath and furnace chamber

Crucibles

• Type P: low carbon steel, CrNi plated and corundum coated for carburizing baths up to 950 °C, neutral salt and annealing baths up to 850 °C
• Type C: high alloy CrNi steel for neutral salt and annealing baths up to 1000 °C

Additional Equipment

• Exhaust gas collection at rim for connection to an exhaust system