WHAT IS A VACUUM FURNACE?
A vacuum furnace enables heat treatment in vacuum. A distinction is made between cold and hot wall vacuum furnaces. Cold wall vacuum furnaces operate with a water-cooled vacuum recipient, which is kept cold during the entire heat treatment process. The heating elements are located inside this recipient. Hot wall vacuum furnaces on the other hand operate with heating elements located outside the vacuum-recipient (e.g., a ceramic or quartz tube) while the recipient is heated itself.