Carburizing and carbonitriding are thermo-chemical processes for surface treatment of steel. During the process of carburizing, steel surface forms a hard martensitic layer which is compactly adhered to the base and provides high wear resistance together with a tough pearlitic core. In the process of carburizing, steel is carburized in the austenitic range (between 880 °C and 940 °C) in a gas medium down to a depth of 5 mm. The process is followed by hardening and tempering to the specified hardness in the range of 55-64 HRC. During the process of carbonitriding, steel is case-hardened as well as nitrided. The process takes place at temperatures between 860 °C and 890 °C in gas media, forming carbon and nitrogen. The method is used for low-alloyed steels and to achieve higher hardness on the workpiece surface.
PROCESS CONTROL SYSTEM FOR CARBURIZING AND CARBONITRIDING
| Maximum workpiece dimensions | Maximum workpiece weight | Medium (surrounding substance) |
| φ 720 × 950 | 500 kg | oil |
Advantages:
- High surface hardness with an extremely tough core,
- Increased wear resistance,
- Durable dynamic and compressive strength.
Applications:
- Parts for automotive industry,
- Mechanical parts for engineering,
- Drive gears (gears, pinions, axles, shafts, etc.),
- Stamped parts,
- Various machine parts (bearing housings, flanges, bushings, clamps, etc.).
