Platform Material Digital Application Ontology (PMDao) - Heat Treatment Module
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Platform Material Digital Application Ontology (PMDao) - Heat Treatment Module

This version:
https://w3id.org/pmd/hto/releases/2026-02-26/hto-base.owl
Revision:
2026-02-26
Authors:
https://orcid.org/0000-0002-9014-2920
https://orcid.org/0000-0003-1649-6832
https://orcid.org/0009-0004-4787-4685
Contributors:
Jannis Grundmann
Download serialization:
JSON-LD RDF/XML N-Triples TTL
License:
https://creativecommons.org/licenses/unspecified
Visualization:
Visualize with WebVowl
Cite as:
https://orcid.org/0000-0002-9014-2920, https://orcid.org/0000-0003-1649-6832, https://orcid.org/0009-0004-4787-4685. Platform Material Digital Application Ontology (PMDao) - Heat Treatment Module. Revision: 2026-02-26. Retrieved from: https://w3id.org/pmd/hto/releases/2026-02-26/hto-base.owl
Provenance of this page
Ontology Specification Draft

Platform Material Digital Application Ontology (PMDao) - Heat Treatment Module: Overview back to ToC

This ontology has the following classes and properties.

Classes

Annotation Properties

Named Individuals

Platform Material Digital Application Ontology (PMDao) - Heat Treatment Module: Description back to ToC

This ontology module is part of the Platform Material Digital Application Ontology (PMDao) and covers concepts related to heat treatment processes, parameters, and materials. It is designed to facilitate data integration, sharing, and analysis in the field of materials science and engineering, particularly focusing on heat treatment applications.

Cross-reference for Platform Material Digital Application Ontology (PMDao) - Heat Treatment Module classes, object properties and data properties back to ToC

This section provides details for each class and property defined by Platform Material Digital Application Ontology (PMDao) - Heat Treatment Module.

Classes

annealingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Annealing

Heat treatment process to form a specific microstructure or reduce residual stresses.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
P M D 0000779 c

atmosphere pressurec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/AtmospherePressure

Effective atmosphere preasure in chamber to keep process save (must be 2-3 mbar above ambient prssure)
Parameter describing the intended atmosphere pressure inside a chamber.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
P M D 0000896 c
is disjoint with
chamber pressure c

austenitizing temperaturec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000011

needs more work; austenitic phase can be reached from at least two temperatures for any given material (from liquid or from ferrite)
disposition of material which marks the phase change to austenite
has super-classes
B F O 0000016 c

carbon potentialc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/CarbonPotential

See standard DIN 1310
Carbon content of a specimen of pure iron in equilibrium with a carbourizing medium under specific conditions.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
B F O 0000145 c

carburizingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000025

has super-classes
surface hardening c

carburizing recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Carburizing

Potentiell ableitbar mit bestimmten Fluss-Schwellenwerten
Heattreatment process with the scope to transfer carbon from the atmosphere to the component surface.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
P M D 0060008 c

chamberc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Chamber

unklare Zuordnung innerhalb der SDCs. Eine Kammer existiert nur als Teil eines Gerätes (Device), könnte aber selbst noch einmal als independent continuant definiert werden, da sich in der Kammer Chargen, Gestelle, Thermoelemente etc. befinden.
Systemboundary of a distinct Heattreatment Process. Typically includes medium (e.g., Helium or Vacuum).
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
has super-classes
B F O 0000024 c
has sub-classes
Quenching Chamber c, heating chamber c

chamber pressurec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/ChamberPressure

measured atmophere pressure in retort, measured using the vacuum sensor
designated pressure in retort during evacuation phase pre to nitriding process or during low pressure nitriding process
Is defined by
https://w3id.org/pmd/hto/
is equivalent to
P M D 0000896 c and (R O 0000080 op some chamber c)
has super-classes
P M D 0000896 c
is disjoint with
atmosphere pressure c

compressorc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000050

A machine that increases the pressure of a gas by reducing its volume.
has super-classes
machinery c
is disjoint with
propeller c, turbopump c

controlledc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Controlled

definition is not enough, what is controlled?
This Scope expresses that a :ValueObject is actively controlled during the process, e.g. a heating process where the temperature change is done in controlled intervals until the desired temperature is reached while an uncontrolled heating process would reach the desired temperature as fast as the furnace allows it to.
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true
has super-classes
device operation state c

convectionc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Convection

if its a device specification to run a heat up process by some spefiic mode of action, then pls change the definition
konvection during heating, heating in atmosphere, not in vacuum
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true
has super-classes
device operation state c

coolingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/cooling

A process in which the temperature is lowered from a higher to a lower level.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
heat treatment essentials c
has sub-classes
quenching c

cooling ratec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000031

A temperature change rate that is of negative value.
has super-classes
temperature change rate c

cooling recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000017

has super-classes
P M D 0060008 c
has sub-classes
quenching recipe c

DEPRECATED sequence durationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/SequenceDuration

The reason for obsoletion is that the term is not clearly defined or of unclear importance.
DEPRECATED Duration of a sequence for which certain furnace settings and process parameters can be defined.
Is deprecated
true

device operation statec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000033

A Device Operation State is a state that inheres in a device and specifies whether a device function is currently active or inactive, typically represented in a control or output protocol as an on/off (or analogous binary) indicator.
has super-classes
P M D 0060006 c
has sub-classes
controlled c, convection c, fan state fast c

device operation state valuec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000034

is equivalent to
{ ON ni , OFF ni }
has super-classes
O B I 0001930 c

dew pointc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/DewPoint

dew point of the atmosphere, measured during process or calculated from lambda / oxygen probe signal
Is defined by
https://w3id.org/pmd/hto/
has super-classes
I A O 0000109 c

durationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000009

has super-classes
B F O 0000202 c

duration specificationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000008

Device specification as part of a plan specification which specifies the duration of a given process.
has super-classes
setpoint c

electric generatorc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000054

A machine that converts mechanical energy to electrical energy.
has super-classes
machinery c

electric motorc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000057

An engine which transforms electric energy into mechanical energy.
has super-classes
engine c

enginec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000045

Engine supply the mechanical energy to power machinery.
A machine designed to convert one or more forms of energy into mechanical energy.
has super-classes
turbo machinery c
has sub-classes
electric motor c, heat engine c, turbine c
is disjoint with
machinery c

fanc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000053

A powered machine that creates airflow.
has super-classes
machinery c

fan state fastc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/FanStateFast

Boolean parameter representing a fast fan speed setting in contrast to the default speed setting.
Term status
needs work
Is deprecated
true
has super-classes
device operation state c

fast coolingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/FastCooling

Anlagenbedingt.
Schnellkühlung
Is deprecated
true
has super-classes
Heattreatment Method c

flow measuring functionc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000029

A subfunction of measuring performed to determine the flow of fluids.
has super-classes
P M D 0000847 c

furnace coolingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/FurnaceCooling

free cooling with deactivated heating unit and no additonal cooling by e.g. agitade nitrogene -> furnace cool
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true
has super-classes
Heattreatment Method c

hardeningc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Hardening

Heat treatment process to increase the strength and hardness of the material by cooling it so that its microstructure transforms to the hardening structure.
Is defined by
https://w3id.org/pmd/hto/
Example 
Randschichthärten

Einsatzhärten

Nitrierhärten
has super-classes
P M D 0000779 c
has sub-classes
surface hardening c, through hardening c

hardening recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000013

add target temperature in axioms, combine it with austenitisation temperature
has super-classes

heat enginec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000056

A system that transfers thermal energy to do mechanical or electrical work.
has super-classes
engine c
has sub-classes
internal combustion engine c, turbojet engine c

heat treatment essentialsc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000000

intermediate class, not to be instatialized
Essential processes that make up heat treatments and can be used like building blocks.
has super-classes
P M D 0000833 c
has sub-classes
cooling c, heating c, holding c, soaking c

heatingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/heating

A process in which the temperature is increased from a lower to a higher level.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
heat treatment essentials c

heating chamberc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HeatingChamber

Distinguishable chamber of a heat treatment furnace with a heater.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
chamber c

heating ratec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000030

A temperature change rate that is of positive value.
has super-classes
temperature change rate c

heating recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000004

has super-classes
P M D 0060008 c

Heattreatment Methodc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HeattreatmentMethod

The reason for obsoletion is that the term is not clearly defined and usage has been inconsistent.
Term status
needs work
Is deprecated
true
has super-classes
B F O 0000023 c
has sub-classes
Slow Cooling c, fast cooling c, furnace cooling c

heattreatmentscopec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HeattreatmentScope

childs are processes that realize a certain goal as realizabale
This class specifices the scope of the specific heattreatment process.
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
Is deprecated
true
has super-classes
B F O 0000023 c

holdingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/holding

Die HoldingTime ist stets mit einer vorhergehende SoakingTime verbunden.
Process step without temperature change in the furnace after the designated temperature was homogeneously reached within the part.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
heat treatment essentials c

holding functionc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000012

A holding function is a (realizable) function that, when realized, enables a system or device to hold the thermal energy of a material, typically to facilitate diffusion and phase transformation processes within the material.
Example 
function of a furnace to hold its temperature at a specified temperature
has super-classes
P M D 0000781 c

holding recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000014

has super-classes
P M D 0060008 c

hydrogene sensor signalc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HydrogeneSensorSignal

nominal pre-set value of control system for hydrogen probe
measured hydrogen value of hydrogen probe measured in milli volt
Is defined by
https://w3id.org/pmd/hto/
has super-classes
I A O 0000109 c

internal combustion enginec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000058

An engine that uses combustion to turn chemical energy into mechanical energy by the transferral of kinetic energy from pressure increase of hot gas expansion into the movement of engine parts.
Example 
driven parts can be:
pistons (piston engine)
turbine blades (gas turbine)
rotor (Wankel engine)
nozzle (jet engine).
has super-classes
heat engine c

lambda probe signalc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/LambdaProbeSignal

measured lambda probe signal in exhaust gas
Is defined by
https://w3id.org/pmd/hto/
has super-classes
I A O 0000109 c

machineryc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000044

the mechanical energy needed for machines to work is supplied by engines/motors
A powered machine which takes up mechanical energy.
has super-classes
turbo machinery c
has sub-classes
compressor c, electric generator c, fan c, propeller c, turbopump c
is disjoint with
engine c

mass flow controllerc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000028

Device that has the function to control the flow of fluid media to a defined mass flow. It consists of a mass flow meter and a proportional valve.
has super-classes
P M D 0000602 c

melting temperaturec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000007

disposition of a material at which a phase transformation between liquid and solid state takes place
has super-classes
B F O 0000016 c

nitridingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Nitriding

surface hardening process in which nitrogen in liquid or gaseous form is supplied to a material's surface with the goal to increase the nitrogen content in the surface of a sample or part.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
surface hardening c

nitriding potentialc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/NitridingPotential

The nitriding potential is a key indicator how intensive the nitriding process is, the higher the value the stronger the nitriding conditions, unit is bar^-3/2
calculated nitriding potential, generated out of H2 / NH3 atmosphere content measurement
Is defined by
https://w3id.org/pmd/hto/
has super-classes
B F O 0000145 c

nitriding recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000018

has super-classes
P M D 0060008 c

obsolete accellerated coolingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/AccelleratedCooling

Achieved via convection only.
Status of the cooling method active e.g., at the end of the nitriding process
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
Is deprecated
true

obsolete acquisition datec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/AcquisitionDate

The reason for obsoletion is that the term is not clearly defined and of uncertain relevance.
The point in time a Process Node was commissioned (e.g., the purchase date, first day of use), represented in IEEE 1003 'Seconds since Epoch'.
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
Is deprecated
true

obsolete atmospherec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Atmosphere

The reason for obsoletion is that the meaning of the term is ambiguous.
A surrounding influence or environment
Is deprecated
true

obsolete below ambient pressurec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/BelowAmbientPressure

The reason for obsoletion is that the term is not clearly defined and of uncertain relevance.
status of atmosphere: reduced pressure below ambient pressure
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete chamberscopec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/ChamberScope

Sollte mit Unit-Volume (m^3) verbunden sein
OBSOLETE. Functional furnace chamber.
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
Is deprecated
true
has super-classes
B F O 0000023 c

obsolete collection interface hintc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/CollectionInterfaceHint

The reason for obsoletion is that the term is not clearly defined and of uncertain relevance.
A label in support of identifying a network interface and/or address used by a process node to provide primary data stored in ontologies
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete concentrationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/ConcentrationH2

Ammonia is usually intenionally induced;
Concentration in process gas composition; units could be e.g. mol/m³; signal could be in mA or mV or in vol.-%
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete duration till target temperaturec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/DurationTillTargetTemperature

Erwärmdauer = Heizzeit + Durchwärmdauer
Measurement representing the actual duration of a heating procedure.
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete duration to reach target temperaturec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/DurationToReachTargetTemperature

The reason for obsoletion is that the term is not clearly defined or of unclear importance.
Parameter representing a derived duration of a heat up segment (in hours, minutes or seconds)
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

OBSOLETE fan (legacy)c back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Fan

IRI not according to convention.
OBSOLETE A device that creates airflow.
Is deprecated
true

obsolete fluidc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Fluid

The reason for obsoletion is that the term is not clearly defined and usage has been inconsistent.
A substance (such as a liquid or gas) tending to flow or conform to the outline of its container
Is deprecated
true

obsolete furnace atmospherec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/FurnaceAtmosphere

The reason for obsoletion is that the term is not clearly defined.
atmosphere type present in retort (vacuum, nitriding, neutral, carburizing)
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete Heating Timec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HeatingTime

The reason for obsoletion is that the term is not clearly defined or of unclear importance.
Duration until the target temperature is reached in the furnace.
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete leakage checkc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/LeakageCheck

The reason for obsoletion is that the term is not clearly defined and usage has been inconsistent.
leakage test duration, where the change of pressure after evacuation is rated according to leakages present
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete leakage intervalc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/LeakageInterval

Stands for the measurement interval for recording sensor signals (pressure, temperature) and instrument settings (rotational speed, flow rate of MFC), unit as time stamp hh:mm:ss
effective leakage measuring duration
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete nitriding depthc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/NitridingDepth

The reason for obsoletion is that the meaning of the term is ambiguous.
designated nitriding depth or measured nitriding depth
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete Oil Quenching Durationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/OilQuenchingDuration

The reason for obsoletion is that the term is not clearly defined or of unclear importance.
Dwell time of the components in the quenching medium.
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete over pressurec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/OverPressure

The reason for obsoletion is that the term is not clearly defined and usage has been inconsistent.
Parameter also for liquid or gaseous media for quenching condition of inductive heat treatments, e.g. water pressure or nitrogen pressure in mbar or bar
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
Is deprecated
true

obsolete Quenching Leadtimec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/QuenchingLeadtime

The reason for obsoletion is that the term is not clearly defined or of unclear importance.
Duration between leaving the heating chamber and the start of effective quenching. Applies to two-chamber furnaces.
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete recording intervalc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/RecordingInterval

stands for the measurement interval for recording sensor signals (pressure, temperature) and instrument settings (rotational speed, flow rate of MFC), unit as time stamp hh:mm:ss
effective data aquisition and saving interval for documentation
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete sequence descriptorc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/SequenceDescriptor

The reason for obsoletion is that the term is not clearly defined and of uncertain relevance.
Label of a given process step within a process recipe.
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete sequence numberc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/SequenceNumber

The reason for obsoletion is that the term is not clearly defined and of uncertain relevance.
An identifier indicating a process-number in a Workflow represented via consecutive integers
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete soaking durationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/SoakingDuration

The reason for obsoletion is that the term is not clearly defined or of unclear importance.
Duration at isothermal temperatur step.
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true

obsolete system time for diagram generationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/SystemTimeForDiagramGeneration

The reason for obsoletion is that the term is not clearly defined and of uncertain relevance.
time stamp for measuring data aquisition time and diagram generation / data syncing
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
Is deprecated
true

obsolete Type Descriptionc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/TypeDescription

The reason for obsoletion is that the term is not clearly defined and of uncertain relevance.
Description for Process Node's utility, e.g. "Rear Vacuum Furnace Oil Quenching".
Is defined by
https://w3id.org/pmd/hto/
Term status
marked to remove
Is deprecated
true

obsolete vacuum heating pressurec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/VacuumHeatingPressure

The reason for obsoletion is that the term is not clearly defined and usage has been inconsistent.
OBSOLETE. Pressure of the vaccum heating pump.
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
Is deprecated
true
has super-classes
P M D 0000896 c

obsolete vacuum pressurec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/VacuumPressure

in retort measured value of vakuum sensor
Parameter describing the intended vacuum pressure inside a chamber.
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true
has super-classes
P M D 0000896 c

oxygen probe signalc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/OxygenProbeSignal

measured oxygen probe signal in retort atmosphere
Is defined by
https://w3id.org/pmd/hto/
has super-classes
I A O 0000109 c

partial pressurec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/PartialPressure

Paramenter describing the intended pressure inside a chamber targeted in a factor relative to one bar (using a vakuum cooling or an atmosphere flow). The complement to vacuum-heating as it allows for active vacuum pump during atmosphere flow. Should be set to zero, if vacuum-heating is true.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
B F O 0000145 c

propellerc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000051

A powered machine with a rotating hub and radiating blades which exert linear thrust upon a working fluid such as water or air.
has super-classes
machinery c
is disjoint with
compressor c, turbopump c

QT recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000021

is equivalent to
P M D 0060008 c and ((B F O 0000051 op some hardening recipe c) and (B F O 0000051 op some tempering recipe c))
has super-classes
P M D 0060008 c

quenchingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/quenching

Process with significantly increased cooling rate, aimed at preventing diffusion based transformations.
has super-classes
cooling c

quenching and temperingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000022

QT is a heat treatment process in which a hardening process is followed by a tempering process.
has super-classes

Quenching Chamberc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/QuenchingChamber

Chamber of a heat treatment furnace that is designed to quench objects.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
chamber c

quenching functionc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000001

A quenching function is a (realizable) function that, when realized, enables a system to lower the temparature of a material fast enough, that it hinders diffusion processes and thus produces metastable material states.
Example 
The function of a oil bath to quench steel after austenitisation so the material transforms into martensite.
has super-classes
P M D 0000055 c

quenching recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000016

has super-classes
cooling recipe c

rotation speed specificationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Rotation

seam to be a device specification pinting to a process charateristic of type speed
Device specification describing the intended rotational speed of a device e.g. an fan or turbine
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
has super-classes
setpoint c

setpointc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000032

Internally (within the devices' logic) a process is run to reach and maintain the given setpoint.
A Set Point is a device specification that assigns a desired quantitative value to a controlled process parameter, serving as the normative reference for process execution and control.
Example 
The flow rate for a mass flow controller.
The target temperature in the furnace chamber for a given process step.
The rotational speed of a fan.
has super-classes
P M D 0060006 c
has sub-classes
duration specification c, rotation speed specification c, temperature change rate specification c

Slow Coolingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/SlowCooling

Slow cooling with equilibrium near conditions, to foster an equilibrium near micro structure.
Is defined by
https://w3id.org/pmd/hto/
Is deprecated
true
has super-classes
Heattreatment Method c

soakingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/soaking

Durchwärmen des Bauteils, sodass Temperaturhomogenität erreicht wird. Anschließend kann ein Halten auf der Zieltemperatur erfolgen.
Process step during which temperature homogenization is achieved in the component.
Is defined by
https://w3id.org/pmd/hto/
has super-classes
heat treatment essentials c

soaking recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000015

has super-classes
P M D 0060008 c

steam turbinec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000048

A machine that extracts thermal energy from pressurized steam and uses it to do mechanical work utilising a rotating output shaft.
has super-classes
turbine c

surface hardeningc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000019

has super-classes
hardening c
has sub-classes
carburizing c, nitriding c

target pressurec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000027

A process attribute. Describes the pressure set point for a given process.
has super-classes
P M D 0000008 c

target temperaturec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000006

Process characteristic defining the temperature that is to be reached within a process that involves a defined change of temperature.
has super-classes
P M D 0000008 c

target temperature specificationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000002

has super-classes
I A O 0000005 c

temperature change ratec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000005

A process attribute defining the change of temperature per time unit within a process.
has super-classes
P M D 0000008 c
has sub-classes
cooling rate c, heating rate c

temperature change rate specificationc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000003

Device specification which - as part of plan specifications (e.g. recipes) - specifies the rate at which temparature is to be changed.
has super-classes
setpoint c

temperature unitc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000010

has super-classes
I A O 0000003 c

temperingc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/Tempering

A heat treatment process to transform the hardening structure into the direction or equilibrium structure.
Is defined by
https://w3id.org/pmd/hto/
Term status
needs work
has super-classes

tempering recipec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000023

add target temperature in axioms
has super-classes
P M D 0060008 c

through hardeningc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000020

has super-classes
hardening c

turbinec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000055

has super-classes
engine c
has sub-classes
steam turbine c, water turbine c, wind turbine c

turbo machineryc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000043

A device that extracts energy from or imparts energy to a continuously moving stream of fluid.
has super-classes
P M D 0000602 c
has sub-classes
engine c, machinery c

turbojet enginec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000049

combination of a gas turbine and and a propelling nozzle
has super-classes
heat engine c

turbopumpc back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000052

A machine powered by a gas engine to create high throughput and high pressure flow of fluid media.
has super-classes
machinery c
is disjoint with
compressor c, propeller c

water turbinec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000047

An engine which converts kinetic energy of water into rotational energy of a shaft connected to a generator.
has super-classes
turbine c

wind turbinec back to ToC or Class ToC

IRI: https://w3id.org/pmd/hto/HTO_0000046

An engine to convert kinetic energy of a gas (movement of air in the atmosphere, wind) into the rotation of a shaft which drives a generator.
has super-classes
turbine c

Annotation Properties

alt Labelap back to ToC or Annotation Property ToC

IRI: http://www.w3.org/2004/02/skos/core#altLabel

considerap back to ToC or Annotation Property ToC

IRI: http://www.geneontology.org/formats/oboInOwl#consider

contributorap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/contributor

creatorap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/creator

definitionap back to ToC or Annotation Property ToC

IRI: http://www.w3.org/2004/02/skos/core#definition

descriptionap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/description

exampleap back to ToC or Annotation Property ToC

IRI: http://www.w3.org/2004/02/skos/core#example

I A O 0000114ap back to ToC or Annotation Property ToC

IRI: http://purl.obolibrary.org/obo/IAO_0000114

I A O 0000115ap back to ToC or Annotation Property ToC

IRI: http://purl.obolibrary.org/obo/IAO_0000115

I A O 0000116ap back to ToC or Annotation Property ToC

IRI: http://purl.obolibrary.org/obo/IAO_0000116

I A O 0100001ap back to ToC or Annotation Property ToC

IRI: http://purl.obolibrary.org/obo/IAO_0100001

licenseap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/license

P M D 0000060ap back to ToC or Annotation Property ToC

IRI: https://w3id.org/pmd/co/PMD_0000060

P M D 0000064ap back to ToC or Annotation Property ToC

IRI: https://w3id.org/pmd/co/PMD_0000064

pref Labelap back to ToC or Annotation Property ToC

IRI: http://www.w3.org/2004/02/skos/core#prefLabel

titleap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/title

typeap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/elements/1.1/type

Named Individuals

OFFni back to ToC or Named Individual ToC

IRI: https://w3id.org/pmd/hto/HTO_0000036

has facts
P M D 0000006 dp "false"^^boolean

ONni back to ToC or Named Individual ToC

IRI: https://w3id.org/pmd/hto/HTO_0000035

has facts
P M D 0000006 dp "true"^^boolean

Legend back to ToC

c: Classes
ni: Named Individuals

Acknowledgments back to ToC

The authors would like to thank Silvio Peroni for developing LODE, a Live OWL Documentation Environment, which is used for representing the Cross Referencing Section of this document and Daniel Garijo for developing Widoco, the program used to create the template used in this documentation.