Heat Treatment Ontology (HTO)
The PMD application ontology (PMDao) of generic heat treatments (Heat Treatment Ontology - HTO).
The heat treatment ontology (HTO) is developed in the context of the joint project of platform material digital (PMD). The HTO is connected to the PMD core ontology (PMDco).
Achieved via convection only.
Status of the cooling method active e.g., at the end of the nitriding process
Accellerated Cooling
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'.
Acquisition Date
Heatteratment process with the scope to change the properties or microstructure of a sample or part. Typically no hardening is performed with this process.
Annealing
Atmosphere
Effective atmosphere preasure in chamber to keep process save (must be 2-3 mbar above ambient prssure)
Parameter usually slightly higher than ambient pressure for open process to environment to prevent/reduce diffusion of oxygen into the furnace, e.g. by leckage, to avoid explosive or dangerous atmopheres, could be bar, mbar or Pa
Parameter describing the intended atmosphere pressure inside a chamber.
Atmosphere Pressure
Temperaturmessung mit Thermoelement in einem Bauteil an Position 1
Temperaturmessung mit Thermoelement in einem Bauteil an Position 2
Es gibt z.B. Anlassöfen die keinen Temperaturfühler haben
mid. Gibt i.d. der regel einen. skos: Temepraturfühler der im Ofen plaziert, je nach Anwendungsinteresse.
Temperaturverhalten gemessen mit einem Thermoelement in einem thermisch ähnlichen Körper innerhalb der Charge.
Batch Temperature
status of atmosphere: reduced pressure below ambient pressure
Below Ambient Pressure
Nitrocarburieren mit Kohlenstoffträger, aus Messwerten abgeleitet KC
See standard DIN 1310
Carbon content of a specimen of pure iron in equilibrium with a carbourizing medium under specific conditions.
Carbon Potential
Potentiell ableitbar mit bestimmten Fluss-Schwellenwerten
Heattreatment process with the scope to transfer carbon from the atmosphere to the component surface.
Prozessschritt, während dessen Kohlenstoff aus der Atmosphäre an der Bauteiloberfläche übertragen wird
Aufkohlen
Carburizing
Systemboundary of a distinct Heattreatment Process. Typically includes media (e.g., Helium or Vaccum).
Chamber
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
Chamber Pressure
Sollte mit Unit-Volume (m^3) verbunden sein
Functional furnace chamber.
Funktionale Ofenkammer.
Position of the batch in a multi-chamber furnace A specialization of hasProcessNodeComponent representing distinguishable heat treatment chambers of a furnaces. can be: heating chamber / cooling chamber
ChamberScope
Wärmebehandlungsofenkammer
A label in support of identifying a network interface and/or address used by a process node to provide primary data stored in ontologies
Collection Interface Hint
Ammonia is usually intenionally induced;
Einzelne Werte durch auf das Molekül spezifizierte Messsonden.
Might be calculated from model or measurement.
Oxygen concentration in process gas composition, oxygen can be formed during decomposition of e.g. carbon monoxide or dioxide or can be intenionally induced e.g. as air, synthetic air or water or enters the furnace via leckage.
Water concentration in process gas composition, if nominal water is intenionally induced; units could be e.g. mol/m³ or °C; signal could be in mA or mV or in vol.-% or °C (dew point)
Hydrogen can be formed during decomposition of e.g. ammonia, acetylene or can be intenionally induced e.g. in forming gas.
Concentration in process gas composition; units could be e.g. mol/m³; signal could be in mA or mV or in vol.-%
Concentration
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.
Controlled
konvection during heating, heating in atmosphere, not in vacuum
Convection
represents whether a sequence (of a process recipe) is for cooling to nominal temperature or not, takes value 0 or 1
Cooling Flag
A process in which the temperature is lowered from a higher to a lower level.
Ein Prozess, bei dem die Temperatur von einem höherem auf ein niedrigeres Niveau abgesenkt wird.
process description during cooling process, e.g. fast cooling, free furnace cooling, controled cooling
Abkühlprozess
Cooling Process
Parameter representing the intended temperature difference in celsius per minute nominalHeatingStepDelta (related to "Temperatur-Rampe")
Cooling Temperature
dew point of the atmosphere, measured during process or calculated from lambda / oxygen probe signal
Dew Point
Erwärmdauer = Heizzeit + Durchwärmdauer
Maß für die tatsächliche Dauer eines Erwärmvorgangs.
Measurement representing the actual duration of a heating procedure.
Duration Till Target Temperature
Erwärmdauer
Parameter representing a derived duration of a heat up segment (in hours, minutes or seconds)
Duration To Reach Target Temperature
Anlagenbedingt.
Schnellkühlung kann z.B. durch erhöhten Kühlwasserdurchfluss erfolgen. Auch erhöhte Gaskühlung durch ventilation.
Schnellkühlung
Stark beschleunigte Abkühlung ohne Abschreckmedium.
Fast Cooling
status of the atmosphere, evacuation step without nitriding potential
Fine Vacuum
Effective flow rate might be generated by the system with a manual input in Percent.
Use Scope.Medium and pmdoc:relatesTo chemical element from chebi; units could be l/min, l/h, m³/h, ...
Parameter representing the intended induced flow rate of a medium, e.g. Oil, Gases, Fluids in general.
ex:flowrateH2 a :FlowRate ; co:relatesTo chebie:Hydrogen ; co:unit qudt:Mol-per-litre .
Flow Rate
Measured value for the total flow rate of all process media
Flow Rate Total
A substance (such as a liquid or gas) tending to flow or conform to the outline of its container
Fluid
atmosphere type present in retort (vacuum, nitriding, neutral, carburizing)
Furnace Atmosphere
free cooling with deactivated heating unit and no additonal cooling by e.g. agitade nitrogene -> furnace cool
Furnace Cooling
Heat treatment process with the aim of achieving an increase in strength and hardness of the material.
Wärmebehandlungprozess mit dem Ziel eine Festigkeitssteigerung zu erreichen.
Randschichthärten Einsatzhärten Nitrierhärten verwendet Randschichttiefe
Hardening
Härten
A furnace intended to change the physical and chemical properties of objects (e.g., test pieces or blanks) achieved through heat treatment techniques such as annealing, case hardening, precipitation, strengthening, tempering, normalizing, or quenching.
Ein Ofen, der dazu bestimmt ist, die physikalischen und chemischen Eigenschaften von Objekten (z. B. Prüfstücke oder Rohlinge) durch Wärmebehandlungsverfahren wie Glühen, Einsatzhärten, Nitrieren, Borieren, Ausscheidungsbildung, Verfestigen, Anlassen, Normalisieren oder Abschrecken zu verändern.
Heat Treatment Furnace
Wärmebehandlungsofen
Distinguishable chamber of a heat treatment furnace with a heater.
Heating Chamber
Heizkammer
Ofenkammer mit einer Heizung.
A process in which the temperature is increased from a lower to a higher level.
Ein Prozess, bei dem die Temperatur von einem niedrigem auf ein höheres Niveau gesteigert wird.
type of heating process, e.g. fast uncontrolled heating, heating ramp controlled etc.
Erwärmprozess
Heating Process
Temperaturmessung mit dem Thermoelement im Heizungsraum (raum außerhalb der Retorte. Thermoelemnt zwischen isolierung und retorte)
Heating Temperature
Dauer bis zum Erreichen der Zieltemperatur im Ofen.
Duration until the target temperature is reached in the furnace.
Heating Time
This class specifices the scope of the specific heattreatment process.
HeattreatmentScope
Parameter representing the intended temperature in celsius at the end of a heatup-segment or during a Holding and Soaking Segment.
Parameter representing the measured temperature of the furnace or of an additional temperature sensor. Units could be in °C or K
effective pre-set value for heater
Heattreatment Temperature
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.
Prozessschritt ohne Temperaturänderung im Ofen.
Halten
Holding
Unterbrechung des Kühlprozesses zwecks Temperaturausgleich
represents whether a sequence (of a process recipe) is for waiting until nominal temperature is reached during cooling or not, takes value 0 or 1
Holding Cooling
isothermal holding step during heating
represents whether a sequence (of a process recipe) is for waiting until nominal temperature is reached during heating or not, takes value 0 or 1
Holding Heating
nominal pre-set value of control system for hydrogen probe
measured hydrogen value of hydrogen probe measured in milli volt
Hydrogene Sensor Signal
measured lambda probe signal in exhaust gas
measured signal of the lambda-probe in millivolt, representing the atmospheres redox-potential
Lambda Probe Signal
leakage test duration, where the change of pressure after evacuation is rated according to leakages present
stands for the dwell time during which the pressure increase is evaluated to check tighness of furnace after evacuation initially at process begin
Leakage Check
boolean result of leakage test
represents whether a sequence of a process recipe is a safety leakage check of furnace or not, takes value 0 or 1
Leakage Flag
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
Leakage Interval
Process Node's manufacturer name, e.g.: "Ipsen" or "UPC"
Manufacturer
Am Anfang der Abschreckung vorliegenden Temperatur des Abschreckmediums.
The temperature of the quenching medium at the start of quenching.
oil a Medium , ValueObject , Temperature , Setpoint , Metadata ; relatesTo CHEBI:XXXX ; value 60.0 ; unit qudt:DegreeCelsius .
Abschreckmediumtemperatur
Media Temperature
Medium
This indicates that the furnace is constructed with at least 2 chambers with different functionalites and purposes.
Effective temperature of the ammonia pre-cracker device
NH3-cracker Temperature
heat treatment process with the scope to increase the nitrogen content in the surface near area of a sample or part
Nitriding
designated nitriding depth or measured nitriding depth
Nitriding Depth
status of the atmosphere, nitriding step with nitriding potential present in the atmosphere
Nitriding Flag
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
nitriding potential of atmosphere calculated from H2 probe signal and ammonia flow rate
Nitriding Potential
Dwell time of the components in the quenching medium.
Parameter indicating the duration of the conducted quenching action
Verweildauer der Bauteile im Abschreckmedium.
Abschreckdauer
Oil Quenching Duration
Parameter representing the intended oil temperature in a quench chamber. Is used in preperation to heat up oil before quenching (oil volume approx. 300l).
Oil Temperature
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
Parameter describing a significant higher pressure than ambient pressure, e.g. during a high pressure gas quenching process step, could be mbar or bar
Over Pressure
Maximal zulässige Abweichung einer Ist-Temperatur, die die Aufheiz-Soll-Temperatur überschreitet. Die Überhitzung kann absichtlich höher als die vorgesehene Aufheiz-Soll-Temperatur eingestellt werden, um die Temperatur eines Objekts implizit zu steuern (in der Annahme, dass ein Objekt kühler ist als die gemessene Ofentemperatur).
Maximum allowed deviation of a actual temperature that exceeds the heatup-target temperature. Overheat may be set higher than the intended heatup-target temperature deliberatly in order to implictly control an object's temperature (based on the assumption that an object is cooler than the measured furnace temperature).
Parameter for maximum allowed deviation of a acutual temperature that exceeds heatup-target temperature. Overheat may be set higher than the intended heatup-target temperature deliberatly in order to implictly control an object's temperature (based on the assumption that an object is cooler than the measured furnace temperature).
Overheat
Übertemperatur
measured oxygen probe signal in retort atmosphere
Oxygen Probe Signal
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.
Describing the intended pressure inside a chamber targeted in a factor relative to one bar (using a vakuum cooling or an atmosphere flow).
Parameter describing the amount of a specific gas species in a mixture, could be mbar
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.
nominal pressure of a specific atmosphere component thermochemical steps
nominal pressure of thermochemical heat treatment pressure during thermochemical steps
Partial Pressure
Process with significantly increased cooling rate, aimed at preventing diffusion based transformations.
Prozess mit stark erhöhter Abkühlgeschwindigkeit, mit dem Ziel der Verhinderung diffusionsgesteuerter Umwandlungen.
Abkühlungsvorgang, der unter Verwendung eines Mediums erfolgt, das in direktem Kontakt mit dem steht, mit dem Ziel die Wärme des Bauteils aufzunehmen.
Abschreckprozess
Quenching
Quenching Process
Chamber of a heat treatment furnace that is designed to quench objects.
Kammer eines Wärmebehandlungsofens, die zum Abschrecken von Gegenständen bestimmt ist.
Abschreckkammer
Quenching Chamber
Dauer zwischen Verlassen der Heizkammer und Beginn der effektiven Abschreckung. Gilt für Zweikammeröfen.
Duration between leaving the heating chamber and the start of effective quenching. Applies to two-chamber furnaces.
Parameter indicatin the duration right before the quenching process
Abschreckvorlaufzeit
Quenching Leadtime
effective data aquisition and saving interval for documentation
Recording Interval
Parameter describing the intended rotational speed of a device as e.g. an fan or turbine, unit revolution per minute.
rotation speed of the atmosphere agitation device
Rotation
Label of a given process step within a process recipe.
Sequence Descriptor
Duration of a sequence for which certain furnace settings and process parameters can be defined.
Duration of the current heat treatment recipe sequence.
Sequence Duration
An identifier indicating a process-number in a Workflow represented via consecutive integers
number of process step of heat treatment recipe
ongoing number for labeling the process steps within a process recipe
Sequence Number
This indicates that the furnace is constructed with one chamber which can have different functionalites and purposes.
Langsame Abkühlung unter gleichgewichtsnahen Bedingungen, um ein gleichgewichtsnahes Gefüge zu erzeugen.
Slow cooling with equilibrium near conditions, to foster an equilibrium near micro structure.
Langsame Gleichgewichtsnahabkühlung
Slow Cooling
Dauer bis zum Erreichen der homogenen Temperatur im Bauteil.
Duration at isothermal temperatur step.
Duration to achieve a homogenous temperature distribution in the part
Durchwärmzeit
Soaking Duration
Process description during soaking steps, e.g. nitriding with controlled nitriding potential etc.
Process step during which temperature homogenization is achieved in the component.
Prozesschritt, während dessen die Temperaturhomogenisierung im Bauteil erreicht wird.
Soaking Process
Parameter representing the intended temperature in celsius to hold nominalHeattreatmentTemperature
designated heat treatment temperature at isothermal thermo chemical treatment step
Soaking Temperature
standard method for cooling of furnace to RT
Standard
Extrahierte Systemzeit für das Diagram geniert
time stamp for measuring data aquisition time and diagram generation / data syncing
System Time For Diagram Generation
Darstellung der beabsichtigten Zieltemperatur in Celsius am Ende eines Aufheizvorgangs.
Representing the intended target temperature in celsius at the end of a heating process.
targeted temepratur for heat treatment
Target Temperature
Zieltemperatur
Defined temperature change rate in temperature change per time unit.
Definierte Temperaturänderungsrate in Temperaturänderung pro Zeiteinheit.
Temperature Change Rate
Temperaturänderungsrate
A conditioning process which is run to increase or decrease the temperature of an object or a space. Usually, this involves heating or cooling devices such as furnaces or cooling media.
Temperature Change Process
Temperaturänderungsprozess
Parameter representing the allowed difference between nominal and measured value (hysteresis for controlling the temperature), unit °C
Temperature difference of heating system temeprature and measured temeprature in the batch
Temperature Difference
Parameter defining a nominal temperature value for valid furnace operation, higher value leads to safety measurements, unit °C
maximum savety temeprature for temperature control system controler
Temperature Safety
A heat treatment process to transform the hardening structure into the direction or equilibrium structure.
Ein Wärmebehandlungsprozess, um das Härtungsgefüge in die Richtung oder in ein Gleichgewichtsgefüge umzuwandeln.
Tempering
heat treatement process with the scope to reduce the hardness of a prior hardened sample or part
Anlassen
Tempering Process
Description for Process Node's utility, e.g. "Rear Vacuum Furnace Oil Quenching".
Typbeschreibung
Type Description
Parameter that sets the activity of the vacuum pump. If true, no atmosphere flow is possible (even if set). Effectively, the same mechanics as vacuum-cooling (this is for humans)
Vacuum Heating
Pressure of the vaccum heating pump.
Vacuum Heating Pressure
in retort measured value of vakuum sensor
pre-set gas pressure at vacuum sequence
Paramenter describing the measured pressure inside a chamber; units could be mbar, bar
Parameter describing the intended vacuum pressure inside a chamber.
Vacuum Pressure
Indicates a constant supply of athmospheric gas during a heat treatment process. Without this flag there will be no additional gas supllied except the set pressure drops.
Furnace atmosphere control and oxygen deminishing steps with nitrogen gas flow
With Gas Purging
During nitriding there can be an exchange of the atmosphere gas without removing the gas beforehand. This is a relevant information because it indicates a process step in between two processes.
Neglect any intermediate evacuation process
Without Intermediate Evacuation