Gas Nitriding is especially suitable for pre-heat treated alloy steels and tool steels. The relatively low process temperature makes the process ideal for parts where low distortion and deformation are important.
- Improved anti-galling properties
- Improved wear resistance
- High surface hardness
- Better fatigue life
- Process up to:
- 75” long
- 39” diameter
- 4,000 pounds
- 75” long
The work zone size is 1,000 mm (39”) OD x 1,900 mm (75”) deep. A maximum gross weight of 1,800kg (4,000 lb) can be processed in a load.
Gas Nitriding is suitable for a range of mild & alloy steels, cast irons, tool steels and specialty alloys.
Gas Nitriding is a low temperature case hardening process that is ideal for producing hardened surfaces on pre-heat treated alloy steels such as 4140 and 4340, pre-heat treated tool steels such as H13, and specialty grades such as Nitralloy 135M.
Process Selection and Quality Control
Gas Nitriding requires precise control of the treatment process. Thermex operates under an ISO Certified Registered Quality Management System. Process quality control measures include:
- Managed using an automatic nitriding potential control system based on hydrogen probe measurements of the atmosphere. This provides complete control of temperature, time, and atmosphere.
- Test coupons of matching material are run with all nitriding loads. Coupons can then be used for metallurgical analysis in Thermex’s in-house metals testing laboratory. Random microhardness case depth surveys ensure that process specifications are being met. Example below.
- Temperature uniformity surveys of furnaces.
- View a sample Case Depth Survey here.