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Quench C hardening is a mechanical process in which steel and cast iron alloys are strengthened and hardened. These metals consist of ferrous metals and alloys. This is done by heating the material to a certain temperature, depending on the material.uench metals is a progression; the first step is heating, i.e. heating it to the required temperature. Second step is soaking. Soaking can be done by air (air furnace), or a bath or in a vacuum. The soaking time in air furnaces should be 1 to 2 minutes for each millimeter of cross-section.
All Answers (12) 1  Boron increases the hardenability of steel throught the formation of borocarbides Fe23(C,B)6. There is a lot of literature, an internet search could give you many pointers. 2  Thanks Krallis for the links. Unfortunately boron's effect on hardenability is not straightforward. Upto certain wt% of B hardenability increases and after that it drops. This critical B conc again depends on the overall steel chemistry but the extent of that is unknown to me. So I am looking for that critical value of B for the given steel chemistry.