PHOTOGRAPH: METTERS' FACTORY INTERIOR: MUFFLE IN ACTION

One of a number of photographs relating to Metters Ltd.

In muffle furnaces, the material to be heated is placed inside a chamber separated from the fuel and any combustion gases to ensure a controlled, clean and consistent heating environment, The heart of the furnace is the "muffle" — an insulated chamber that houses the material to be heated. The heating elements, typically made from silicon carbide, surround the muffle and provide the necessary heat. The heating elements generate warmth, while the insulation retains the heat. The muffle's design ensures a uniform temperature distribution, which is crucial for consistent results in heat treatment processes.

Muffle furnaces have the advantage of ease of use, high-temperature capabilities and robustness and durability. The ceramics industry relies heavily on muffle furnaces for firing and hardening ceramic products. The high-temperature capabilities and uniform heating environment ensure the desired material properties are achieved.