Microwave Tubes Group: Facilities
 
Equipment Capabilities Specifications Photographs
Thermal Technology Astro-Furnace
Brazing and firing of parts / sub-assemblies in vacuum
Operating Temp. : 1800°C
Hot Zone : 4" Dia × 8" Long
Input Supply : 220 Volts, 1 φ, 10 kVA
Water cooling : 3 GMP@55psi


Electrical Resistance Heated Vertical Retort Furnace
Brazing and Firing of parts / sub-assemblies in Vertical Position (Dia: 500 mm, Height: 1530 mm) in inert gas atmosphere
Temp. Controlling Zone : 3
Overall height of Retort : 1730 mm
Max. Working Temp. : 1100°C
Capacity of Hoist : 3 Tonne
Input Supply : 415 ± 5% V, 3 φ, 50 Hz




Controlled Atmosphere
Muffle Furnaces
Brazing and firing of Microwave tube parts in horizontal position in the wet/dry H2 gas, N2 gas and Mixture atmosphere
Max. Temp. 1200 °C
1. Hot Zone : 3" Φ × 5" length
2. Hot Zone : 5" Φ × 10" length
3. Hot Zone : 3" Φ × 15" length
Input Supply : 220 V, 1 φ, 50Hz
Ultra High Vacuum System
Processing of MW Tubes in Ultra High Vacuum
Working pressure range : 10-10 to 10-11 torr
Electric Air Furnace
Firing and Annealing at Atmosphere
Max. Temperature : 1400°C
Input Supply : 220 V, 1 φ, 50 Hz

Digital Leak Detector
Measuring Range : 10-12 to 1 mbar l/s
Detectable leak rate : 4He < 5 × 10-12 mbar l/s
smallest : 3He <5 × 10-10 mbar l/s
Detectable leak rate : 4He < 1 mbar l/s
greatest : 3He < 1 × 10-2 mbar l/s
Operating Mode : Vacuum/ Sniffing
Input Supply : 230 ± 10% V, 50 Hz
Current < 10A


RF Induction Heater Furnace
Firing and Brazing through RF heating
RF output power : 20 kW
Frequency : 160-400 kHz
Filament voltage : 7.5 ± 0.19 V (AC)
DC Plate Current : 3.5 A



Electrical Resistance Vacuum Brazing Furnace
Brazing Furnace Hot Zone: 300 mm Dia. × 400 mm Ht.
Power Supply : 415 V (A.C.), 3 φ, 50Hz
Position : Vertical
Hydrogen Plant
To fulfill the requirement of Pure Hydrogen in the institute
Capacity : 96 cu. feet/hour
Purity : 99.99%
Storage Vessel : 5 cu. meter


 
Glass Blowing Lathe Machine
For glass, Quartz and glass-to-metal sealing
Input Supply : 220 V, 1 φ, 50 Hz
High Voltage Break Down Tester
Break down testing of sub-assemblies of Microwave Tubes
Highest Break Down Voltage : 220 kV
Real Time X-Ray Machine
For internal X-Ray of Microwave Devices
(for finding of internal cracks and alignment of sub Assemblies)
Operating Voltage : 320kV
Input voltage : 415 Volts, 3 φ, 50 Hz

 
Fabrication Facilities
 
Microwave Tubes Division of CEERI has almost all the facilities for fabricating Microwave Tubes for R&D purpose. The development of Microwave Tubes involves establishment of several critical technologies, such as fabrication of large diameter ceramic-to-metal seals for high voltage feed through, development of jigs and fixtures for accurate alignment of subassemblies of a large sized tube, precision piece-parts & jigs / fixtures for small tubes. Other major facilities available with the division that are useful for Microwave Tubes development are given below:
•  Mechanical Fabrication of Precision Components of Microwave Tubes
 
•  Chemical Cleaning, Plating & Treatment of Components
 
•  Glass Technology Unit
 
•  Microwave Testing Bench including VNA
 
•  Limited Environmental Testing
 
•  RO Water Plant
 
•  Laser Welding, Tig Welding, Arc Welding & Spot Welding Units
 
•  Honing Machine
 
•  Attenuator Coating System
 
•  Sputter Ion Coating Unit
 
•  Sand Blasting Unit
 
•  Bore scope
 
•  DC/ RF Testing Facility for Microwave Tubes
Common Scientific Facility (CSF) Team:
 
•  Sh. R. K. Gupta, Scientist In-charge
 
•  Sh. R. Ranga Rao
 
•  Sh. G. R. Sain
 
•  Sh. Mangal Chand
 
•  Sh. Mohar Singh
 
•  Sh. Mahendra Singh
 
•  Sh. O. P. Arya
 
•  Sh. Kulbir Singh
 
•  Sh. Rajesh Kr. Meena
 
• Sh. Ghanshyam Saini
   
•  Sh. Gajraj
 
•  Sh. R. K. Panday
 
•  Sh. Ravi Kumar
 
 
 
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