flame hardening


Also found in: Dictionary, Wikipedia.
Related to flame hardening: Induction hardening, Case hardening

flame hardening

[′flām ‚härd·ən·iŋ]
(metallurgy)
A method for local surface hardening of steel by passing an oxyacetylene or similar flame over the work at a predetermined rate.
Mentioned in ?
References in periodicals archive ?
Lippert explains that the new steel needs no flame hardening and so eliminates the localized soft spots that used to plague a die's flexible "hinge" and land areas.