Vacuum heat treatment is the most economical, reliable and reproducible way of imparting characteristics to materials and surfaces. Compared to inert gas ovens it is cleaner - a vacuum contains far fewer contaminants than the best quality gas. Vacuum supply is thus both an important part of heat treatment processes and an indicator of high product quality. Here is a selection from the extensive Busch product range:
Combi vacuum systems
Combi vacuum systems can be built with several types of pump, and always include a backing pump combined with a booster. The number of combinations of pump types and sizes is very large, permitting the operating pressure and throughput to be matched exactly to the heat treatment process.
COBRA dry screw vacuum pumps
COBRA backing pumps used in Combi vacuum systems allow your fine and high vacuum supplies to operate entirely without fluids. COBRA screw vacuum pumps compress in a single stage, operate contact-free and are dry-running. Used with Puma or Panda vacuum-boosters, they make the ideal combination for even the most demanding of heat treatment processes.
R 5 rotary vane vacuum pumps
R 5 rotary vane vacuum pumps have a robust and proven oil-lubricated design and may be used as fore pumps. They are air-cooled, and available in a wide range of sizes. They may be combined with Puma or Panda Vacuum-Boosters and are ideal for all fine vacuum applications.
Rangu diffusion vacuum pumps
Rangu diffusion pumps deliver top performance for high vacuum applications. They have an innovative multi-stage jet design, and are ideal for large-scale heat treatment processes in which high vacuum levels must be achieved in the shortest possible time. Rangu diffusion pumps are best used in a Combi system that generates the required rough vacuum.
Turbo turbomolecular vacuum pumps
Turbo vacuum pumps were developed specifically for industrial high vacuum applications at up to 1·10-10 hPa (mbar). They are used when high pumping speeds are required, and in cases where the evacuated gases must remain completely free of operating fluids.