Carburizing process utilizing atmospheres generated from nitrogen-ethanol based mixtures

摘要

A process for carburizing ferrous metal articles in a furnace under an atmosphere derived from an input of nitrogen and ethanol injected into the furnace during the entire cycle. Carburization is controlled in a first embodiment by the control of ethanol and nitrogen mixture and water vapor content of the mixture as well as total flow through the furnace and in a second embodiment by controlling the nitrogen-ethanol mixture to which is added water and an enriching or carburizing agent.