When we talk in terms of heat treating in vacuum, most people think we do so in a space entirely devoid of matter. In reality, this isn't true. In practical terms then, a vacuum is a space with a highly reduced gas density. Just how many gas molecules are still present and how they react inside the vacuum furnace is something we should better understand. Let's learn more.
Check out the January 2016 issue of Industrial Heating, which includes a cover story on case hardening, as well as articles on using failure analysis to discover and mitigate crack propagation, applications and properties of vacuum oil quenching, and much more.