bell furnaces
specialized heat treatment furnaces with a removable bell-shaped cover that encloses the workload for controlled heating.
en-US/ˈbɛl ˈfɝˌnʌsɪz/
en-GB/ˈbɛl ˈfɜːnɪsɪz/
specialized heat treatment furnaces with a removable bell-shaped cover that encloses the workload for controlled heating.