Plasma Nitriding

Active Screen Plama Nitriding (ASPN) produce high quality nitrided surfaces with a number of advantages over conventional plasma and gas nitriding processes.

Compared to gas nitriding ASPN has the following advantages:

• Closer control of the structure and depth of nitriding.
• Control of type and thickness of compound layer.
• Better reproducibility.
• Ability to harden stainless steels.
• Cleaner and more environmentally acceptable process.
• Shorter process times for case depths of up 0.25 mm.
• Can be followed by post oxidation to give hard, corrosion resisitant black finish.
• Surface is suitable for further coatings.

Compared to conventional plasma nitriding ASPN has the following advantages:

• Compnents of different sizes can be mixed in the same load.
• No risk of arc damage to components.
• Very good penetration down holes.
• Imporved uniformity near edges and corners.

Limitations:

• Due to excellent penetration, masking must be done very carefully.
• High penetration may cause problems with low density sintered components.

Applications:

• Automotive Transmissons.
• Fuel Injection Systems.
• Plastic Moulding Dies.
• Suspension Components.
• Hydraulic Parts.
• Hot and Coldwork Tooling.
• Automotive Value Equipment.