3530 SERIES GENERAL PURPOSE

The basic design comprises of three standard hot zone sizes in four different temperature ranges (1000°C, 1315°C, 1650°C, and 2200°C), with a long list of optional equipment that makes this one of the most versatile custom-designed furnaces available today. The furnace chamber is console-mounted for a compact and highly efficient design and is a "front-loading" design which offers better ergonomics and temperature uniformity compared with vertical top/bottom loaders or round 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, or 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 for process control. Name brand vacuum sensors and gauges are available on all systems as well as analog/ digital chart recorders. 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 H2 process gas with our Factory Mutual approved G-10503A gas system.

Variations of the standard Workhorse® design are available for Co-Firing (Series 3560) and Metal Injection Molding (Series 3570). With over 500 units in the field, the Workhorse® design is one of the most proven production designs for heat treating and brazing furnaces worldwide.

• Cold Wall Vacuum furnace design with stainless steel inner jacket and outer jackets with baffled water cooling.
• No epoxy coated surfaces on chamber interiors results in higher vacuum integrity.
• Heavy duty rod elements used instead of thin strip or foil elements which can be easily damaged. Hot zones use a 30° rule to ensure proper radiation on all sides.
• Operation to 2600°C with two- or four-sided heating elements in partial pressures from 10-3 torr up to 1-3 psig positive pressures of Argon, Nitrogen, Helium, and Hydrogen.
• PLC with Industrial Programmable Controller or PC system using Intellution™ FIX32 HMI software customized by CVI for vacuum furnaces, with extensive data acquisition; and remote operation capabilities.
• High and low vacuum pumping systems including diffusion, cyrogenic, and turbomolecular.
• G-10504A Partial Pressure control system (1-1000 microns) available for suppression of low vapor pressure braze compounds, and our G-10503A positive pressure Hydrogen gas system with FM approval.
• Graphic control panel shows location of vacuum pumps and system status using indicator lamps, and provides for manual operation of the furnace.
• Water cooled power cables for effcient power capacity instead of low cost welding cables.
• Integrated water cooling piping with color-coded hoses.
• Analog Ammeters and Voltmeters on control cabinet for each leg of the power supply for operator feedback.