Pulsed Plasma Nitriding / Nitrogen and Carbon Co-Infiltration Equipment

Product Description

The equipment is suitable for pulsed plasma nitriding, plasma nitrogen and carbon co-infiltration for all common steel materials, such as 42 CrMo 4,34CrNiMo6,31CrMoV9, etc., to increase viscera resistance and corrosion resistance.
Compared with salt bath nitring and gas nitriding, pulsed plasma technology has the following advantages in hardness of ion nitride layer and wear resistance and corrosion resistance on steel surface:
-Low medium consumption, pollution-free gas, vacuum treatment, no need to use ammonia gas;
-In order to prevent part deformation and size change, the temperature of the workpiece of different materials can be flexibly adjusted between 350ºC -600ºC;
-Nitride layer structure can be controlled by automatically controlling gas components-no compound layer can be produced by automatically controlling gas components;
-Part tial nitrogen can be achieved through simple mechanical shielding, without paint, in the shielding position;
 A stainless steel (chromium content> 12%) nitriding through a special process, will not reduce the corrosion resistance;
A sintering steel nitrogen infiltration, non-ferrous metal (Ti, Al) nitrogen infiltration (special equipment).
Equipment characteristics
A compact structure, save space saving, all components in a common base frame a system flexible, single chamber, alternating, double chamber and other configurations;
An advanced control concept, based on the user interface of the Windows operating system, can realize remote control and maintenance;
A modern heating and cooling system design, each device has at least three independent heating and cooling cycles, and a uniform temperature distribution between the control areas (soil 5ºC or better, depending on the actual furnace loading situation)
 An advanced heat insulation system, lower heat capacity, lower heater energy consumption;
-Advanced ion generator technology, highly integrated standardized design, can be used by multiple sets; pulse current reaches set value of 10 μ s, super fast arc detection and control, switching time 5 μ s; compared with gas nitride, heating energy consumption reduced by more than 50%.


Standard equipment model

model	Effective workspace dimensions	pimsoll line	The highest temperature court
CPN 200 700x1000	φ 600x700  mm	1000Kg	600ºC
CPN 400 1000x1600	φ 800×1200 mm	2000Kg	600ºC
CPN 600 1200x2000	φ 1000x1500 mm	3000Kg	600ºC
CPN 80 1400x2500	φ 1200x2000  mm	5000Kg	600ºC
CPN  160 O1800x2900	φ 1600x2200 mm	8000Kg	600ºC

 The equipment has the following three options: single chamber type, alternating type, double chamber type
 The single chamber type is only one complete vacuum chamber (1 bell hood, 1 base). If needed, it can be extended to alternate devices, simply by adding a second base. The double chamber type has two complete vacuum chambers (two bells, two bases). Two vacuum chambers share a vacuum pump, a gas supply system, and a pulse ion system. Therefore, there is no need for a second vacuum pump, a second gas supply system, and a second plasma power supply, and the equipment capacity can be increased. For example, when one vacuum chamber is cooling, the other can base and automatically move the next process, saving time.
The interface can be prepared in advance for future upgrade to dual compartment. Therefore, if it is expected to gradually increase the nitride products in the future, you can buy a single chamber equipment first, and then do alternating / double chamber expansion.

Optional configuration
 Double-compartment alternating-type extension
Use the second set of vacuum chamber base with the same vacuum chamber vacuum cover, with the necessary piping and vacuum connection.
 Double chamber expansion
A second set of vacuum bell cover and a second set of base for this purpose, with heating and insulation systems and necessary line connections.
work steady
Standard or special construction for placing nitride parts.
 Follow-up oxidation unit
The subsequent oxidation treatment after ion nitrogen infiltration can be carried out in the same process cycle. The purpose of oxidation is to further improve the corrosion resistance of the parts and reduce the friction coefficient of the parts.
cleaning equipment
Used to clean the nitrogenous parts, level 3 water base cleaning process (high pressure jet cleaning, high pressure jet scour, drying.)
water chilling unit
(The standard equipment has been equipped with water inlet and outlet system, which can be connected to the workshop centralized water supply system, and can be optional when there is no centralized water supply)
Provide cooling water to cool the vacuum sealing ring on the device.
 This is a more cost-effective pulsed plasma nitriding equipment

Through standardization and customization, the subsystems of pulse plasma power supply, vacuum system, process gas intake system, furnace moving and transfer system and electronic control system can be realized locally, and the equipment cost can be greatly reduced, which can be selected according to the actual needs.
Upgrade package service
 According to the need, we can provide the upgrade package service for the existing old equipment of other brands in the workshop, so as to improve the process control level and automation control ability of the old equipment and reduce the customers
renewal cost. The upgrade package is a highly integrated and standardized design, when the whole equipment is updated later. All equipment can be assembled into the new equipment, and gradually realize the update of the full set of equipment.
Pulsed plasma power supply
IGBT high frequency pulse DC power supply, highly integrated standardized design, can obtain nearly square wave
Voltage and current pulse (the pulse current reaches the set value of 10us). Stable glow discharge, starting at room temperature
Start; even at low temperature treated stainless steel can be obtained by plasma surface activation
Processing result and shorter processing time; equipped with active arc extinguishing system, 100 MHz sampling frequency number
Word controller brings ultra-fast arc detection and control; adjustable reverse voltage, improve the seepage quality and drop
Low-altitude heart cathode effect and energy loss caused by arcing, improve the permeability of deep hole or slit; ultra-fast suppression
Arc, arc energy is recovered to the internal circuit of the power supply, basically no arc, no surface damage; multiple power supply stack
 Add output, only need to control the host, all the slave automatically set parameters, automatically synchronous arc sound
Should, dynamic call power supply, use more flexible and convenient.

output voltage	1200V
frequency	0…100kHz
backward voltage	0.... 100V / 0... 30% adjustable
Arc control	Up  to  20 karc/s
main power source	400-480 VAC±10%,3 phase
cooling water	Inlet water temperature + 20ºC to + 35ºC inlet pressure 2-7bar

 Cathodic support and temperature measurement system upgrade
 Through the transformation of the cathode support system of the old equipment, the glow discharge is more uniform and controllable, with maintenance-free design. Under the premise of no external force damage, no need is required for maintenance in the whole life cycle, and the accidents such as Yin and Yang pole conduction are completely prevented.
According to the needs of customers, the automatic temperature control system can be customized, no need for artificial visual temperature control.

Automated air intake system upgrade
 Based on the old equipment on the customer site, the integrated gas supply system is updated to avoid the use of irritating gases such as ammonia gas. Meanwhile, the gas components in the furnace are accurate
Control, in order to achieve the precise control of the seepage layer quality.
 The gas unit is used to supply the process with mixed gases, different gases (e. g., nitrogen, hydrogen, methane, argon)
Each road gas is controlled by a mass flowmeter.
 Highly integrated process gas intake system that enables precise control of up to five process gases,
To achieve effective control of high quality hardening layer.
 Each gas line can also be equipped with additional accessories, such as pressure switches, filters and bypass pipes,
The specific configuration depends on the nitriding process and the material required to be treated.