Muffle Furnace

Definition - What does Muffle Furnace mean?

Muffle furnace refers to a type of jacketed enclosure that is used to heat a material while keeping it contained and fully isolated from external contaminants, chemicals or substances.

Corrosionpedia explains Muffle Furnace

Muffle furnaces were designed when heat was primarily generated via combustion for industrial applications. Combustion typically generates a variety of unwanted byproducts when initiated. Such products include ash, soot and gas fumes. These materials could negatively impact the material being heated. The muffle furnace serves to separate the combustion source and byproducts from the material being heated.

Improvements in electric heating sources and insulation materials have enabled modern muffle furnaces to reach and hold temperatures of 1800 degrees Celsius. In addition, electric sources of heat have greatly reduced the degree of contamination due to combustion byproducts.

In present times, muffle furnaces used today in a variety of applications. These applications include: lab materials settings to conduct experiments, brazing and soldering. The high temperatures of a muffle furnace makes it a good choice melting glass and metals.

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