KIT | KIT-Bibliothek | Impressum | Datenschutz

Vacuum gas carburizing - fate of hydrocarbons

Khan, Rafi Ullah

This work focuses on gaseous reactive flows in ideal and non-ideal reactors. The objective of this research is the development of models for the numerical simulation of homogeneous reactive flows under vacuum carburizing conditions of steel with propane and acetylene. These models can be used for further investigations of heterogeneous reactions during vacuum carburizing of steel to predict the carbon flux on the complex shaped steel parts to understand and, eventually, optimize the behavior of the whole reactor.

arburizing is the case-hardening process in which carbon is added to the surface of low-carbon steels at temperatures generally between 850 and 1050 °C. In the conventional gas carburizing at atmospheric pressure, the carbon potential is controlled by adjusting the flow rate of the carburizing gas. Carbon potential of the furnace atmosphere can be related to partial pressure of CO2 or O2 or vapour pressure of water by equilibrium relationships and a sensor can be used to measure it. This method of carbon-potential control cannot be used for vacuum gas carburizing due to the absence of thermodynamic equilibrium which is one of the main difficulties of the vacuum carburizing process. ... mehr

Open Access Logo

Volltext §
DOI: 10.5445/KSP/1000009231
Die gedruckte Version dieser Publikation können Sie hier kaufen.
Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
Publikationstyp Hochschulschrift
Jahr 2008
Sprache Englisch
Identifikator ISBN: 978-3-86644-275-7
KITopen-ID: 1000009231
Verlag Universitätsverlag Karlsruhe, Karlsruhe
Umfang II, 159 S.
Abschlussart Dissertation
Fakultät Fakultät für Chemieingenieurwesen und Verfahrenstechnik (CIW)
Institut Engler-Bunte-Institut (EBI)
Prüfungsdaten 29.07.2008
Referent/Betreuer Prof. R. Reimert
Schlagworte gaseous reactive flows, carburizing
Relationen in KITopen
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page