Ion Nitriding and Ion FNC
Surface is your experienced source for ion technologies
using our reliable furnace products
Surface® Combustion offers a wide range of standard and custom designed ion (plasma) nitriding furnaces for batch processing of parts.
With our diversity of atmosphere and ion nitriding capabilities and companion equipment and controls, Surface provides the best technology suited for each specific processing requirement
Ideal for extended life parts that benefit from this high precision nitriding process
Nitriding is a case hardening process that adds nitrogen to the surface of ferrous materials. A thin, uniform hard surface layer, known as the compound layer or white layer develops.
The ion process is an alternative to the gas nitriding process that uses a vacuum environment along with high-voltage electrical energy in the form of plasma to accelerate nitrogen ions to impinge the surface of the work piece. This ion bombardment acts as primary or secondary heat source, cleans the surface, and provides nitrogen to the surface.
Surface Combustion originally licensed technology utilizing DC power supplies and now offers a pulse power AC solutions with arc detection. The key differences between conventional gas and ion nitriding is the electrical energy used to generate nascent nitrogen at the surface of the work being processed and that no ammonia is required.
Surface has installed ion nitriding furnaces globallyand offers a wide range of designs and companion equipment for the following processes:
- Epsilon White Layer
- Gamma Prime White Layer
- No White Layer
Generally, ion nitriding can be performed anywhere conventional gas nitriding is used in a batch furnace configuration. Surface offers a wide array of furnace designs in either vertical or horizontal and can be added to any machining cell due to the cold wall assembly. We offer the nitriding furnace in several other configurations alongside ion nitriding furnace such as an electric retort pit nitriding furnace.
Surface Equipment Product Benefits:
Fuel Used: Electric
Ammonia Used: No
Temperature Range: 840-1050 °F (449-566 °C)
Load Size: 3,000 to 20,000 lbs (1,360 to 9,071 kg)
Repeatable Process: High repeatability
Floor Space: Cold walled, can be in machining area
Surface has the capability to test the process and optimize the results to verify the outcome. Our lab is used to create the recipe neededfor the best product results. A recipe is developed for every furnace installation.
Nitriding is performed at a lower temperature and does not require quenching which minimizes distortion, does not affect core hardness, and allows for a final part shape with no post-machining.
The nitriding process provides excellent surface hardness without introducing distortion. Wear and galling resistance are increased while corrosion resistance is also enhanced. Workpieces in this process tend to have higher fatigue strength.
High Pressure Die Casting
Automotive and Truck Industries
(Gasoline & Diesel)
Bodies and Assembly
Hot Forging Dies
(Gasoline & Diesel)
Coating and Cutting Industry
Saw Blades (Bi-Metal)
Saw Blades (Single Metal)
Surface Knowledge of Product and Process Supports Your Solution
Surface’s extensive line of furnaces includes relevant companion equipment to ensure the nitriding line installation process is complete. Equipment and Furnace Control Systems are developed based on your application needs.
Surface offers a full line of companion equipment for the controlled atmosphere nitriding furnace:
- Forced Atmosphere Cooling Systems
- Loading Cars for Horizontal Configurations
- Supervisory Computer Control Systems
Furnace Control System
The Multi-Zone Electric Heating system is included in each furnace system.
All nitriding furnace configurations can be provided with control of the nitriding potential (Kn).
This system consists of:
- Online Material Databases
- Process Calculators
- Control of Furnace Pressure
- Temperature Control
Atmosphere probes for online continuous control of:
- Nitriding Potential
- Nitrocarburizing Potential
- Oxidation Potential
- Disassociation Rate
- Mass flow controls for precise control of flow rates
- Available control system for furnace temperature, load temperature, furnace pressure, gas mixing composition, and power supply
Call Surface with the following pieces of information ready to initiate your furnace solution.
- hours per year
- available space
- operating temperature range
- heat source
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For Parts and Service have one or more of the following details regarding your furnace if possible:
- Serial number
- Drawing number
- Photos of your furnace or parts for replacement
- Spare parts list
- Furnace rebuild history
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