COFI, Italy is a leading manufacturer of Vacuum and Atmosphere Controlled furnaces in Europe with more than 30 years of experience in providing equipment for the heat treatment industry. COFI provides technical know-how to INDAID for the manufacture and supply of its range of Vacuum Furnaces in India. Apart from building vacuum furnaces, we also provide complete turnkey solutions for setting up a full-fledged Vacuum Heat Treatment facility.
With successful Vacuum Furnace installations working in different parts of India, COFI and INDAID are proud to be ushering in the latest technology for the Indian Industry. Engineers at INDAID have been trained by COFI at its facility in Italy to ensure high quality local support in India for installation, start-up and after sales support.
THE VACUUM ADVANTAGE
Just as choosing the correct tool & die steel is very important, equally important is the proper heat treatment of the same. Proper heat treatment is critical to realize the full potential of the chosen alloy and also to retain the dimensional integrity of the heat treated tools.
Advantages of Vacuum Technology over conventional heat treatment for tool and die steels are :
Eco friendly and clean process involving zero emission and zero solid/liquid wastes.
Isothermal Quenching makes distortion free heat treatment possible.
Prevents oxidation and decarburization, resulting in brighter finish of the job.
Rapid quenching makes higher hardness possible and also increases the depth of hardenability.
THE COFI-INDAID ADVANTAGE
INDAID offers Vacuum Furnaces, with know-how from COFI Spa, Italy, that can meet the demanding process specifications of the industry. Our Vacuum Furnaces are suitable for a wide range of Heat Treatments for Tool and Die Steels including Hardening, Tempering , Annealing and Stress Relieving as well as for Vacuum Sintering and Brazing . Heating is done under Vacuum of up to
5 x 10-3 millibar and quenching is done in-situ using Nitrogen gas with pressures ranging up to 10 Bar (absolute).
With our Vacuum Furnaces offering uniform heating and controlled cooling, achieving the right balance between wear resistance and toughness is no longer an art but a sure science.
The Heat Treatment Cycle is fully PLC controlled and automated from start to finish - eliminating human intervention and thereby improving the process reliability;
PC based on-line monitoring of process and data acquisition for analytical reports;
Different time-temperature cycles can be stored as programs for future use thereby ensuring reliability & repeatability of processes;
The Furnace is equipped with a Variable Frequency Drive for the quench fan motor and multiple thermocouples for chamber, job surface and core temperatures for Isothermal quenching resulting in a distortion free heat treatment, with best metallurgical results;
The furnace is designed to achieve temperature uniformity of +/- 3o C.
Our Vacuum Furnaces are built to perform consistently and the modular construct of the furnace makes it easy to install and maintain.
Graphite foil bonded carbon composite lining of the heating chamber, along with the graphite heating elements, is designed to deliver fast, uniform and economical heating.
The unique twin heat exchangers (DECS Cooling System) together with the high powered fan results in rapid and uniform quenching for achieving the desired hardness;
The double walled construct with water jacketing lowers the skin temperature;
The hinged door and the locking ring mechanism with a lip seal gasket ensures perfect sealing for achieving the desired vacuum;
LOCKING RING MECHANISM FOR PERFECT SEALING
TWIN HEAT EXCHANGERS - FOR RAPID QUENCHING
MOLYBDENUM NOZZLES FOR HIGH VELOCITY QUENCHING
TECHNICAL SPECIFICATIONS FOR OUR POPULAR SIZES:
Working dimensions W x D x H
600 x 800 x 450 mm
600 x 900 x 600 mm
Max. Operating temperature
Temp. Uniformity @ 500 – 700°C
± 5° C
± 5° C
Temp. Uniformity over 700°C
± 3° C
± 3° C
5 x 10 m bar
5 x 10 m bar
Nitrogen Cooling pressure ***
0 6 Bar Abs
0 6 Bar Abs
* Other models & sizes to suit your specific requirements can be offered on request.
** Higher Vacuum level can be offered for brazing applications.
*** Up to 10 bar Abs. can be offered on request.