What is defined as a local corrosion damaged characterized by surface
cavities.
What is a process of producing a hard surface in a steel having a
sufficiently high carbon content to respond to hardening by a rapid cooling of
the surface?
What is a method of casehardening involving diffusion in which the
steel to be casehardened is machined, heat treated placed in an air tight box
and heated to about 1000 oF
The following statements are true except one which one.
The cooling of molten urea by air in the tower is called.
