Ionitech’s Cold-Wall plasma nitriding and low temperature nitrocarburising equipment

The heating of the parts, in a Cold-Wall plasma nitriding installation, is carried out only by pulsed plasma created in the vacuum chamber. This type of plasma nitriding equipment is especially suitable for nitriding similar in shape and size batches of parts. The main advantages of this type of equipment are:

-    Lower cost of the equipment
-    Easy maintenance
-    Lower consumption of electrical energy


The Cold-Wall vacuum chambers’ type could be:

-    Door-type chambers
-    Bell-type chambers
-    Pit-type chambers
-    Combined chambers loaded from the bottom and from the top


The vacuum chambers have double walls, with cooling water circulating in between. In order to decrease the heat exchange between the treated parts and the chamber walls. Two stainless steel shields, separated by thermo-insulating wadding, are installed on the inside surface of the walls and the bottom.


In the door-type chambers and bell-type chambers, the parts are loaded on a metal plate. In the pit-type chambers the parts are attached to special devices to hang. And for the combined-type chambers, the parts could be loaded on a working plate or attached to devices to hang.  The metal plate and the special devices for attachment lie on support insulators and are connected to the cathode of the plasma generator. The process of plasma nitriding could be viewed through a sight glass. The temperature during the process is measured directly in the parts using one or two thermocouples K-type.


The plasma generator and it’s defense mechanism - a power transformer, a three phase thyristor rectifier, a power choke, a power IGBT switch and a number of circuit breakers, filters and contactors, assembled for different supply voltages and mains frequencies. They are mounted in metal cabinet IP 54 that is cooled with an air conditioning.
The gas vacuum system evacuates the chambers and fills them with treatment gases. It includes a vacuum pump, electro-pneumatic and electromagnetic valves, reducing valves with filters and manometers, mass flow controllers, gas mixer, manual valves, two absolute pressure gauges and vacuum connections.


The pressure gauges are mounted on the chambers bodies. The rest of the components are placed in a ventilated metal enclosure IP54. The process is carried out with a mixture of hydrogen and nitrogen. Propane or natural gas are used for nitrocarburising. After the end of the treatment, the chambers can be filled with argon for accelerated cooling. Pressed air is used for the operation of the electro-pneumatic valves.

  • Different sizes of cold-wall plasma nitriding equipment, manufactured by Ionitech.
  • Ionitech's ION-50I (750x900mm), manufactured for HOSCO s.a.r.l (Hitech OptoSystems) in Lebanon.
  • A double chamber system - while the first chamber is in process the second could be loaded with parts, and could be started the moment the first finishes.
  • ION-75I with working volume of 1000 mm (diameter) x 2000 mm (height). Manufactured for Termeh d.o.o, Slovenia.
  • Ionitech's ION-75I with working volume of Ø1000 mm x 1000 mm of height, manufactured for VIET NAM HTMP COMPANY, Hanoi, Vietnam.
  • Ionitech Ltd. Plasma Nitriding Furnace ION-25I with working volume of 500 mm diameter and 600 mm height - Volchansk, Ukraine.
  • Ionitech's plasma nitriding equipment electrical cabinet, containing the operating and controling electronics and the gas-vacuum system.
  • Loading of tools in the vacuum chamber for plasma nitriding.
  • Loading the parts in the vacuum chamber for plasma nitriding.
  • Ionitech's ION-200I (two-chamber system) with working volume of Ø2650 mm x 1400 mm of height dimensions of the bigger chamber and working volume of Ø1000 mm x 1200 mm of height dimensions for the smaller chamber. Manufactured for KTZ, Kaluga, Russia.
  • Loading of 6 meter pipes in Ionitech Ltd. Plasma Nitriding Furnace ION-100I-2 (two chambers) - Petropavlovsk, Kazakhstan
  • Ionitech Ltd. Plasma Nitriding Furnace ION-100I-2 (two chambers), diameter ∅1000mm height 6000mm - Petropavlovsk, Kazakhstan - different angle

PC Control Panel - Absolutely User-Friendly and Full Control of the Process

The control system consists of a PC controller, main system controller and subsystems (transmitters and drivers) that are connected in a communication network. The Panel PC is equiped with a 15” touchscreen display and uses Windows Embedded Standard 7 operating system.

The technological process is completely automatic. All of the main parameters are controlled by the system controller:
                          
•    Pressure in the working chamber
•    Temperature of the processed parts
•    Heat rate
•    Ratio and consumption of working gases
•    Process time length
•    Pulsed Plasma Current
•    Frequency of pulses
•    Duty-cycle of pulses
•    Temperature of cooling water

Specifically designed application, called IonView, implements the operator interface of the ion nitriding installation. It has the following capabilities:

•    Visualization of the technological process parameters
•    Review and editing of technological programs, even while the installation is working
•    Archive of the technological processes
•    Remote access to the archive
•    Visualization of the installation alarms
•    Alarm notification through e-mail and sms
•    Possibility to send process data to Ionitech as attached zip-file through email.
  • IonView software using a friendly interface containing the status, working parameters, graphs and security for the plasma nitriding process.
  • Graph showing the process parameters provided by our IonView Software.

Ionitech Ltd. offers the biggest variety of Cold-Wall type of plasma nitriding installations in the world.

Cold-Wall Equipment - Ionitech
•    Input voltage: 3x400V( 480V ) +10%/-15%, 50Hz ( 60 Hz )
•    All installation models could be equipped with two chambers working separately - learn more about Ionitech's Double-Chamber System for no loss in technological time
•    Working gases: ammonia, nitrogen, hydrogen, propane, methane
•    Cooling gases: nitrogen, argon
•    Working pressure: 1 - 8 mbar
•    Time for manufacturing 4 - 6 months (depending on the model).

If you have any further questions about our Cold-Wall equipment, please, don't hesitate to write to us:  office@ionitech.com.
Ionitech Ltd. is a private company for Plasma (Ion) Nitriding equipment that was established in 2003, but started it's activity, research and development of it's technology many years before that, improving them every day.
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  • +359 887 80 9272
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