All of the above are associated characteristics of gas carburizing. But there is an alternative that is gaining favour as it reduces these issues. Low-pressure carburizing (LPC) is a cleaner process.
However, there was still a need for oil quenching. So, what are the possible solutions?
Now, with pressure for stronger environmental, social and governance (ESG), electronically heated options with no gas emissions are in the spotlight.
To meet a lot of ESG criteria, the heat treat community will have to adjust. The article below in Gear Technology magazine discusses the options, including carbonitriding. Then takes a look at the benefits of the various options and the investment implications of moving towards a cleaner, greener future.
Certainly, there is a strong case for LPC but will it be right for you? Hopefully, this article will answer your questions.