The Workhorse AM™ is Centorr Vacuum Industries productionoriented offering specifically designed for the secondary heat treating, annealing, stress‐relieving, de‐gassing, and quench cooling of 3D printed and Additive Manufactured parts. Because DLS (direct laser sintering) and SLM (selective laser melting) processes involve localized high‐temperature melting of small spots within the overall part, micro‐stresses can buildup up in the parts that must be eliminated in order to achieve enhanced physical properties such as fatigue strength, hardness, durability, and ductility. Annealing and stress‐relieving in a vacuum or controlled atmosphere of inert gas provides that necessary reduction in stresses. The ultra‐clean vacuum environment also assures no oxidation or decarburization, and a shiny part surface when compared to heat treatment in common atmosphere box furnaces.
The Workhorse AM™ has a long list of optional equipment that makes this one of the most versatile customdesigned furnaces available today. The basic design comprises of the standard hot zone rated for 1315°C with an optional upgrade to 1650°C for processing higher melting materials such as superalloys and Titanium. The Workhorse AM™ even has an option for operation in positive pressure for processing specific alloys in a controlled atmosphere of pure inert gas. For quick‐quench gas cooling requirements, the furnace can be outfitted with a 2BAR gas quench cooling system consisting of a large rotary fan and water‐cooled heat exchanger. The furnace chamber is mounted on legs for a compact and highly efficient design and is a "frontloading" orientation which offers better ergonomics and temperature uniformity compared with vertical top/bottom loaders or cylindrical hot zones.
Unlike laboratory or smaller research furnaces, the Workhorse® contains features only found on high‐end heat treat furnaces, such as a stainless steel interior vacuum chamber with manual door clamps; heavy duty Molybdenum or Tungsten rod heating elements; and all‐metal Tungsten, Molybdenum/SS radiation shield hot zone for fast heating and cooling, and excellent process cleanliness. You won't find any refractory ceramic insulation or graphite felt/board in this hot zone.
Standard Furnace instrumentation includes a programmable controller with PLC and PC/HMI for process control. Name brand vacuum sensors and gauges are available on all systems. CVI's "one‐button start" control system initiates a complete cycle including pumping, heating, and cooling modes. A full complement of program interlocks and safeties ensures safe and efficient furnace operation and reduces the chance of operator vacuum pumping errors, with our unique "keylock" override design.
The Workhorse® furnace line is available with high‐vacuum or low vacuum pumping systems and can include Diffusion pumps, Turbomolecular pumps, or Cryogenic pumping systems, with or without cold traps and refrigerated baffles. A variety of processing environments are available including high/low vacuum and partial and/or positive pressures of Ar, He, and N2 gases, or Hydrogen process gas with our optional G‐10503A gas system.