A vacuum furnace will heat materials, typically metals, to very high temperatures and carry out processes such as brazing, sintering and heat treatment with high consistency and low contamination.
The processing of components through a vacuum furnace can offer many advantages over conventional thermal Vacuum Furnace
- No surface oxidation or discolouration
- Minimal distortion
- No post cleaning operations
- Near finished, machined shape prior to treatment
- Flux free brazing
- Combined vacuum/atmosphere processing
- Repeatable quality
- Environmentally acceptable furnaces
- Clean, safe, quiet and efficient
Heating metals to high temperatures normally causes rapid oxidation, which is undesirable. A vacuum furnace removes the oxygen and prevents this from happening.
An inert gas, such as Argon, is typically used to quickly cool the treated metal back to non-metallurgical levels (below 400 °F) after the desired process in the furnace. This inert gas can be pressurized to two times atmosphere or more, then circulated through the hot zone area to pick up heat before passing through a heat exchanger to remove heat. This process continues until the desired temperature is reached.