DEFORM Carburization of a Gear Tooth

http://www.cadfamily.com/downinfo/301531.html

2.3. Setting Boundary Conditions
1. Go to object Boundary Conditions. At this point the user needs to
define the boundary over which the carbon-bearing atmosphere is
exposed to the workpiece. In this, the entire surface, both the outer
surface and the bore surface, will be exposed to a carbon-bearing
environment.