Plasma nitriding — the largest sub-contract facility in Britain
Increases wear resistance, surface hardness and fatigue by generation of a hard layer at the outer surface.
Benefits
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Improves wear resistance
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Improves fatigue strength
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Improves basic strength
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Reduces friction
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Reduces galling
How plasma nitriding works
Plasma nitriding works by diffusing nitrogen into the surface of a steel component in a vacuum furnace. The nitrogen combines with alloying elements (ie chrome, molybdenum) in the steel to form a hard nitride layer (ie chrome nitride, molybdenum nitride). Plasma nitriding is successfully carried out at a lower temperature and at a greater rate than gas nitriding, enabling components to be treated without the loss of base hardness and without distortion.
Details
Technology
- Modern surface hardening process using nitrogen
Cost effectiveness
- No need for grinding after plasma nitriding
- Prolongs component life
- Save on plant downtime
- Facilitates the use of smaller sections for a given applied load
Quality
- Approved to ISO9001:2008
- Low treatment temperature
- No distortion
- Retains base hardness
Suitable materials
- Most alloy steels containing chromium and molybdenum.
- High alloy steels which also contain aluminium, tungsten and vanadium
- Austenitic and martensitic stainless steels
- Cast irons
Hardness profile
- Up to 1200 VPN
- Up to 0.6mm
Effective masking
- Plasma Nitride selected areas of component only
Range of components
- Shafts and extruder screws up to 6m long suspended during treatment
- Gears, pins, moulds rolls, dies
High repeatability
- Accurate control of plasma nitriding treatment parameters
- Repeat items plasma nitrided identically