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The VAB chamber furnace is designed for vacuum aluminum brazing

Universal chamber furnace VAB

High Vacuum Furnace and Loading System – VAB 2xX


The VAB chamber furnace with a loading system is a device dedicated to the vacuum brazing of aluminum. By employing an effective and efficient technology that does not require flux (no flux technology), environmental safety can be significantly increased while ensuring reproducible results. This solution guarantees high heating uniformity and minimizes production shortages due to the optimized placement of heating elements, facilitating the maintenance of consistent conditions for each batch location.


The VAB chamber furnace with a loading system is equipped with a high-performance system for achieving a high vacuum and an optimized heating chamber. It provides customers with high-quality parts, particularly for the brazing of heat exchangers, owing to its well-designed structure and heater configuration.

The VAB 2xX is a horizontally oriented, single-chamber high-vacuum furnace dedicated to aluminum brazing. It features a rectangular housing and two parallel-oriented charges. The heating chamber consists of easily removable panels that can be taken outdoors. Additionally, it is equipped with a multi-zone heating system, covering each wall of the chamber and the space between the two parallel batches. This solution allows for precise control and temperature regulation. The furnace housing is designed as a single wall, aimed at maintaining the inner wall of the furnace at a specific temperature, thereby eliminating condensation. Soldered parts are placed on fixtures in the form of pendants, suspended on rails, and transported to the furnace in a hanging form.

/ Repeatability of results,
/ Designed for integration with other devices (de-oiler),
/ Strong and durable soldered connections,
/ Cleanliness of parts with minimal oxidation,
/ High-quality and optimal surface protection for components,
/ Low energy consumption, as well as reduced use of process gases and other resources,
/ Environmentally friendly, with minimal emissions of process gases,
/ Simple, modular design tailored and adapted to the tasks and conditions of the facility,
/ Guaranteed quality and reproducible process results,
/ Support for preventive maintenance,
/ Remote control and monitoring capabilities,
/ Quick delivery and straightforward installation,
/ Customizable to meet customer requirements.

/ Standard horizontal capacity of 1800 kg and more
/ Operating temperature: 650°C
/ Temperature uniformity: +/-3°C
/ Uniform and efficient 360° radiation heating
/ Partial pressure control
/ High vacuum processing up to 10-5 mbar
/ Cooling gases: N2
/ Metal rectangular heating zone/ Computerized control system (PLC+IPC), operator-friendly
/ Compliance with global industry standards

SecoVac Automatic Furnace Control System: Maintenance and Control Functions

/ Functional, user-friendly, intuitive system
/ Uninterruptible power supply (UPS)
/ Full visualization and comprehensive management of emergency situations
/ Automatic generation of predefined reports (graphical or numerical) with export to external files
/ Hierarchy of user access levels
/ Remote control and monitoring
/ Individual configuration of all data analysis charts and printouts
/ Full integration with SCADA software – no need to install additional software

SecoVac Automatic Furnace Control System: Production Functions

/ Friendly programming of furnace system processes
/ Advanced process management with an unlimited number of recipes
/ System protects against the erroneous selection of technological programs

Operational Functions:

/ Operating time counters with the ability to schedule periodic inspections
/ Support for multiple languages
/ Thermocouple life monitoring
/ Stored history of unit operation
/ Monitoring of media consumption with optional refill warnings
/ Two-stage warning alarm system – color-coding for immediate identification of alarms
/ Easy system backup

Management Features:

/ Integration with higher-level management systems
/ Data security through different levels of user access
/ Production optimization based on collected information
/ Reduced operator workload through production automation
/ Programmable delay of process start time/date with GSM (Global System for Mobile Communication) notification option
/ Long-term data logging and remote access to archived information
/ Application browser provides “read-only” access to data.



Dedicated Ancillary Equipment:

/ Manual and/or automatic loaders
/ Loading station
/ Cooling station
/ Stainless steel instrumentation
/ Closed Cooling Water System (ZOWOCH)
/ Gas buffer tank
/ Helium recycling system
/ Noise protection for the pumping system
/ Dew point measurement system at the gas inlet
/ Separate chiller for cooling the diffusion pump
/ Basket for temperature distribution or Datapaq
/ Time-saving spare parts kit

Furnace Options:

/ High vacuum through diffusion pump, cryogenic, or turbomolecular pump
/ Higher temperature operation
/ Multi-chamber temperature control
/ Low-temperature and cryogenic trapping
/ Color selection

Control System Options:

/ Choice of control system – PLC, IPC
/ Managed power control system
/ Independent data logger
/ Remote control and monitoring
/ Air-conditioned control cabinet
/ Optional processes
/ Isothermal and controlled cooling
/ Tempering




/ Brazing

/ Automotive and off-road industry,
/ Generators and power plants,
/ Aviation,
/ Railway,
/ Electronics,
/ Home devices.

All aluminum alloys which can be flux brazed can be vacuum brazed. Additionally, some magnesium-containing aluminum alloys (e.g. 5xxx series) which are not easily brazed by the flux process can be vacuum brazed.

Using correct techniques, Lxxx, 3xxx, 5xxx and 7xxx series alloys can be vacuum brazed.

/ vacuum as a protective and technological atmosphere eliminates the need to use harmful process gases and their emission to the environment,

/ no CO₂ emissions, no use of fossil fuels,

/ gas utilization for cooling (nitrogen, argon), captured and returned to the air, neutral for the environment,

/ reinforced thermal insulation saves electricity (approx. 20%),

/ high energy efficiency of used electrical components (IE3 class motors, inverter control, etc.),

/ application of systems and algorithms limiting energy and technological factor consumption (pumping, heating and cooling systems),

/ no harmful substance emissions,

/ reduction of hardening deformations and downstream machining costs,

/ elimination of part washing after heat treatment.

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