Earlier this year Astro
Division of Thermal Technology shipped a large Model CPF-4060 ceramic
processing furnace (CPF) to Candescent Technologies Corporation of San Jose, California.
Thermal Technology welcomed the engineering challenge to meet the unique requirements of Candescent
Technologies high temperature process. Candescent Technologies has a process that requires
sintering and debinding in production of components for high definition flat display
screens. To meet its customer's needs Thermal Technology integrated many new features into its basic CPF
system that has been successfully used around the world for decades.
The Model CPF-4060 automatic processing furnace system provides fully
automatic, unattended cofiring of metallized ceramic products consistently, and
dependably. It is designed for continuous operation up to 1750°C in wet or dry hydrogen,
inert gas, and any other reducing atmosphere. This system is a coldwall, periodic furnace
utilizing the bell-loading configuration. A containment vessel (retort) encloses the
28" diameter by 36" high work zone and gas injection tubes allow for controlled
atmosphere distribution throughout the work zone. A condensation trapping system collects
moisture and binder from the exhaust gases.
A work support array system was designed with thermal and structural
consideration to insure optimum service life and thermal consistency in the process. The
support array itself has multiple shelves and is moved in and out of the furnace with a
transfer cart. The array can be rotated 180°, in between runs, periodically to eliminate
sagging of the shelves.
The main heating element is fabricated from tungsten mesh with
approximately 6000 square inches of radiating surface area facing the work. Independently
regulated upper and lower trim heaters fabricated from formed molybdenum stock are
installed at each end of the work zone. |
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The furnace is controlled by a workstation that provides the latest
developments in accuracy, reliability and convenience. The precise power control to the
hot zone and the design of the retort, gas injection tubes and heater geometry, insure
excellent temperature uniformity and fast thermal response.
This system is one of a wide range of high temperature systems Thermal Technology designs and builds.
Thermal Technology has a reputation for well designed, quality built
systems with long trouble-free long lives.
Thermal Technology
Thomas C. Clappier
Vice President, Marketing and Sales
1911 Airport Blvd
Santa Rosa, California 95403 USA
Telephone: (707) 571-1911 Fax: (707) 571-8098
Email: sales@thermaltechnology.com |
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