The MIM-Vac M™ is Centorr/Vacuum Industries latest offering in its line of custom-engineered high temperature vacuum / controlled atmosphere furnacess designed specifically for the Metal Injection Molding Market.
Following the success of its graphite hot zone Injectavac™ which CVI pioneered in the early 1980's for the debind and sinter of parts containing 1st and 2nd stage MIM binders, today's MIM-Vac™ furnaces are the result of more than 10 years of experience in MIM technology and over 25 years debinding and sintering PM parts.
The core design is based on Centorr/Vacuum Industries Workhorse® Metal Hot Zone furnaces, which have been sold worldwide for the sintering of powdered metals (with over 300 units in the field), and the binder removal technology of Sintervac® units developed for the Tungsten Carbide industry (with over 600 in use worldwide).
The MIM-Vac™ 'M' is designed primarily for 2nd stage binder removal and sintering, and has a number of design improvements specific for use with MIM Feedstocks. Tight partial pressure control and even gas flow in conjunction with effective event-based programming and sound retort design allows the entire load to view the same series of conditions as a function of time. This results in consistent microstructures and repeatable carbon control.
Depending on the customer's process requirements, a variety of wax and polymer condensation strategies have been developed, including vacuum delube/condensation; Sweepgas™, Injectavac™ BRS™, MIM-Vac™ BRS™, and Thermal Incineration. The judicious use of advanced Molybdenum alloys in the hot zone and retort offers excellent creep resistance, higher recrystallization temperatures, and longer life.
Our revolutionary new gas-plenum retort has rows of perforations allowing even gas flow across all the work trays and is constructed of heavy gauge Lanthanated and TZM Molybdenum for low creep operation even at maximum temperatures, unlike other retort designs which warp and require replacing after as little as one year.
The Modular design offers quick and easy access to all major furnace components and results in significantly lower maintenance and repair costs over the life of the unit.