The VI6_ series by BMI is a range of advanced plasma nitriding furnaces specifically designed for high-performance vacuum plasma nitriding (also known as ionic nitriding). These cold-wall systems, equipped with a mobile dome, provide precise surface hardening for steels while ensuring protection of sensitive zones.

What is Vacuum Plasma Nitriding?

Vacuum plasma nitriding is a low-temperature, high-precision thermochemical treatment that forms a hard nitrided layer on steel components. Also known as ionic nitriding, this technique uses electrical energy to generate a nitrogen plasma within a vacuum chamber, ensuring:

• Controlled nitrogen diffusion

• Minimal distortion

• Excellent wear and fatigue resistance

• Masking capabilities for selective treatment

How the Plasma Nitriding Furnace Works

BMI’s ionic nitriding furnace operates using the following principle:

• The component load is set at cathodic potential, while the vacuum chamber acts as the anode

• A high-voltage differential creates an electrical field, producing a nitrogen plasma

• Active nitrogen ions bombard the surface, initiating the plasma nitriding process

• Metallic masks can be applied to prevent nitriding on selected areas