|
TherMaLLifeÒ
|
Standard Nitriding
|
| Surface Layer |
FNC |
Iron Nitride |
| Method of Application |
V or Atmos* |
#G,S,P,V,F/B* |
| Surface Temperature degrees C |
482-649 (560 opt) |
500-550 |
| Surface Temperature degrees F |
900-1200
(1040 opt) |
932-1022 |
| Core Temperature degrees C |
482-649 (560 opt) |
505-550 |
| Core Temperature degrees F |
900-1200
(1040 opt) |
932-1022 |
| These temperatures are minimum to the maximum ranges for all steels.
DievarÒ by Uddeholm has special time/temp recipe. |
| Actual Control temperatures are at least 50 degrees F below final steel temper specification - i.e. -
If final temper for H-13 is
standardized at 1100 degrees F, FNC would be at most 1050 or below this. |
| Duration (hrs) |
1-8 |
6-72 |
| Compound Thickness (microns)* |
5-20 (6-8 opt) |
n/a |
| Compound Thickness (inches)* |
.0002-.0008 (2-3 opt) |
n/a |
| Diffused Layer (microns)* |
102-203 (100-120 opt) |
90-160 |
| Diffused Layer (inches)* |
.004-.008 (4-5 opt) |
.003-.006 |
| Hardness VHN - 10 grams
load (compound layer) |
(65
file hardness) |
700-1000 |
| Hardness VHN - 500 gram
load (diffusion layer) |
1200-1500
(65 file hardness) |
n/a |
| Equivalent Hardness Rc (150
kilogram load) compound+diffusion+base |
65-70Rc |
n/a |
| Distortion |
n/a |
n/a |
| Sectional Coating |
Yes |
Yes |
| Base Material Treatment |
Before Treatment |
Before Treatment |
| Post Processing |
Rarely |
Rarely |
| Thickness Uniformity |
Excellent |
Good |
| Parent Material |
Metals |
Metals |
|
(Compound Layer also called "white"
or "epsilon" or "ceramic" layer)
(Cleaning) |
# Method Used = G=Gas, S=Salt, P=Powder, V=Vacuum, F/B=Fluidized Bed
Atmos=Controlled Atmosphere |
| Furnace Load
Capacities: 72"L x 36"W x 36"H 5000lbs, VPN 44"L x 28"W
x 30"H 1500lbs |
*depth 1 micron = 0.00003937 inches .0001 inch = 2.54 microns
4-8 (.0002"-.0003") micron compound layer max to prevent chipping. |
