Furnace Choice
How to Select an L & N Furnace
Locate your process in the following table, an X indicates that the furnace will do the job for you. Materials recommended for heat treating in these furnaces are shown in the material codes column (click on the Material Codes heading for a full listing of codes).
|
Maximum |
Process |
Steam
|
Carburizing
|
Nitriding
|
Tempering
|
|
| 1000C | Hardening |
|
X
|
|
|
2, 3, 9 |
| 950C | Case Carburising |
|
X
|
|
|
9, 12 |
| Carbon Restoration |
|
X
|
|
|
3, 11 | |
| Homogenous Carburising |
|
X
|
|
|
9, 10 | |
| Normalising |
|
X
|
|
|
9, 10, 13 | |
| Carbonitriding |
|
X
|
|
|
9, 10 | |
| Hardening |
|
X
|
|
|
2, 3, 4, 12 | |
| Annealing |
|
X
|
|
|
2, 3, 4, 9, 10, 13 | |
| 760C | Age Hardening |
|
X
|
|
X
|
6, 7 |
| Tempering |
|
X
|
|
X
|
1, 2, 3, 4, 9, 11, 12, 13 | |
| Annealing |
|
X
|
|
X
|
1, 2, 3, 4 | |
| 650C | Steam Oxidizing |
X
|
|
|
|
1, 2, 3, 10, 11, 12, 13 |
| Nitriding |
|
|
X
|
|
1, 2, 3, 10, 21 | |
| Stress Relieving |
|
X
|
|
|
2, 4, 10, 13, 14, 17 | |
| Solution Treating |
|
X
|
|
|
17, 22 | |
| Annealing |
X
|
X
|
|
X
|
14, 15, 17, 20, 22, 23 | |
| Tempering |
X
|
X
|
|
X
|
1, 2, 3, 4, 9 | |
| Age Hardening |
X
|
|
X
|
16, 17 |
The L & N Family of Furnaces
L & N Steam Treatment Furnace
Forced-circulation heating with controlled temperature, and steam atmosphere. For heat treating wrought ferrous and non-ferrous metal parts and powdered iron parts.
L & N Carburizing Pit Furnace
Forced-circulation heating with controlled temperature and atmosphere carbon potential. For a wide variety of heat treating processes (such as carburizing, hardening, carbon restoration, and homogenous carburizing) at high production rates.
L & N Nitriding Furnace
Forced-circulation heating with controlled temperature, time and flow of ammonia gas. For production nitriding to critical specifications. Also available in models which automate operation, and program control of temperature and atmosphere for conventional and Flow process cycles.
L & N Tempering Furnace
Forced-circulation heating with controlled temperature. For maximum temperatures to 650C (for tools), 760C (for production parts), and a special model for dense-load production parts to 760C. Also available in models for precision annealing of optical glass.
