 Hardening
the surface of metal components such as turbine blades, gears, shafts,
rollers and camshafts is normally achieved in one of four ways:
-
furnace hardening (electric
or gas)
-
thermo-chemical methods (carburizing/carbon-nitriding)
-
electric induction
-
flame hardening
The latter two methods involve
short-duration, high-intensity heat applied on the selected area of the
component, followed by quenching. In addition to avoiding the need
for a controlled atmosphere environment, these two methods also permit
localized treatment, leaving the balance of the component at its original
hardness level for further machining or finishing.
Flame hardening uses direct
impingement of an oxy-gas flame onto a defined surface area. The
result of the hardening process is controlled by four factors: the
design of the flame head; the duration of heating; the target
temperature to be reached; and the composition of the metal being
treated. The process is also effective at preheating bars, strip
and various contours prior to austnizing, forming and forging.
Flame Hardening Systems,
Inc. manufactures a full range of equipment for efficently applying heat
to a broad assortment of component parts. Basically there are four
methods/types of systems we build, depending on many factors. Please
follow these links for detailed information and descriptions of each major
category: (hint...you can also link to these
from the cascading menu on our main navigation bar under Flame-Hardening
Methods)
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