Cyaniding involves the addition of ___________ for the hardening of surface.
Nitrogen
The cyaniding process involves heating steel in a molten salt bath containing cyanides (like sodium cyanide) or in a gaseous atmosphere containing carbon- and nitrogen-bearing compounds. Therefore, nitrogen is a key element added during cyaniding for the purpose of surface hardening.
Important Questions from Case Hardening
The aim of the tempering heat treatment is to reduce _____ while substantially reducing ______.
Which is a false statement about tempering? Tempering is done to
In order to gain toughness in hardened steel, the process usually adopted is:
The process where the carbon from outside is introduced in the surface of steel by keeping charcoal at higher temperatures is called ________.
The hardening of machine tool guideways is usually carried out by
