Drawing Specifications 1.0
MASSIVE HEAT TREATMENTS
CONVENTIONAL PRELIMINAR MASSIVE HEAT TREATMENTS
ANNEALINGS
Soft annealing Full annealing Spheroidal annealing Sub-critical spheroidal annealing Pendular spheroidal annealing Stress relief annealing
NORMALIZING Normalizing Normalizing and tempering Workability quench and tempering
PRELIMINAR ISOTHERMAL MASSIVE HEAT TREATMENTS Isothermal annealing Spheroidal isothermal annealing
CONVENTIONAL FINAL MASSIVE HEAT TREATMENTS Hardening and stress relief tempering Hardening and tempering Martempering and stress relief tempering Stress relief tempering Tempering Quench and tempering
FINAL ISOTHERMAL MASSIVE HEAT TREATMENTS Isothermal hardening or Bainitic hardening or Austempering or Isothermal quench and tempering
SELECTIVE HEAT TREATMENTS
SURFACE HARDENING Induction surface hardening and stress relief tempering Surface laser hardening ans stress relief tempering Flaming surface hardening and stress relief tempering EBM surface hardening and stress relief tempering
THERMOCHEMICAL TREATMENTS
CARBURIZING Carburizing, direct hardening and stress relief tempering Carburizing, indirect hardening and stress relief tempering Carburizing, double hardening and stress relief tempering Carburizing, hardening after isothermal maintenance and stress relief tempering
CARBONITRIDING Carbonitriding, direct hardening and stress relief tempering Nitriding
NITROCARBURIZING Ferritic nitrocarburizing Ferritic nitrocarburizing + oxidation Ferritic sulphidizing Ferritic sulphidizing + oxidation
MECHANICAL TREATMENTS Shot peening
SURFACE TREATMENTS
PHOSPHATION Zinc phosphation Manganese phosphationTreatment: Ferritic nitrocarburizing + oxidation
- Other names: none
- Standard reference: UNI 10931 : 2001
- Conventional Symbol: NcOE
- Smax compounds layer:
- HV1min:
EFFECTIVE HARDENING THICKNESS AND CLASSES
DEFINITION: EFFECTIVE HARDENING THICKNESS IN NITROCARBURIZING
Effective ferritic nitrocarburizing thickness: distance of the external surface of the hardened layer from the point
where his hardness assumes the conventional value of 100 HV more than the core
| Effective hardening thickness classes | nominal values [mm] | min value [mm] | max value [mm] |
|---|---|---|---|
| NcE1 ( NcOE1; NcSE1; NcSOE1 ) | 0.10 | 0.10 | 0.15 |
| NcE2 ( NcOE2; NcSE2; NcSOE2 ) | 0.20 | 0.15 | 0.25 |
| NcE3 ( NcOE3; NcSE3; NcSOE3 ) | 0.30 | 0.20 | 0.40 |
| NcE4 ( NcOE4; NcSE4; NcSOE4 ) | 0.40 | 0.30 | 0.50 |
| NcE5 ( NcOE5; NcSE5; NcSOE5 ) | 0.50 | 0.40 | 0.60 |