Pit-Type Gas Nitriding Fumance – GNe

Classic but fresh surface hardening process

Equipment Overview

This equipment heats up workpieces made of steel with specific chemical components to 400-600°C in an atmosphere of ammonia gas for a period of 1-100 hrs, forming an iron nitride layer with a thickness of -30 m on the surface, and a follow-up diffusion layer.

Equipment Features

• Produces very high hardness
• Hardness never drops even after heating up to 600°C. (excellent heat resistance)
• Less deformation after treatment.
• Treatment can be performed irrespective of size of workpiece
• Can be used for SUS304-20Cr heat resistant steel

Application Examples

Injection molding machine (cylinders, screws, sleeves)

Hydraulic machinery (plates, pins, cylinders)

Power plants (valves, gears, piping)

Aircraft (shafts, couplings, gears, sleeves)

Vessels (engines, valves, crank axles, plungers)

Automobiles (piston rings, coil springs)