Philadelphia Forgings supplies
high quality forgings that have undergone value added processes
such as heat treatment. Heat treatment refers to a group of services
that alter the strength and hardness of the metal forging, whether
it is a stainless steel forging, carbon steel forging, aluminum
forging, titanium forging, etc. Philadelphia Forgings is a nationwide
supplier of superior forging products and serves customer based
in Pennsylvania, New Jersey, Delaware, and anywhere in the United
Heat Treatment Services
The heat treatment of forgings
plays an important role in developing the desired properties such
as the relieving of internal stresses, the refinement of grain structure,
and the attainment of improved mechanical and physical properties.
For machinability, Philadelphia Forgings supplies forgings in the
annealed, normalized, normalized and tempered, process annealed,
spheroidized or full annealed condition. The forgings may then be
quenched and tempered to achieve the final desired properties. Read
on to learn about the value added heat treatment processes for products
available at Philadelphia Forgings.
Annealing Steel and Metal Forgings
Forgings are annealed to recover
the ductility and yield strength that were lost during a hot forging
process such as closed die forging or hand forging. Metal forgings
that are annealed are first softened, which relives internal stresses,
than recrystallized to grow new, more refined grains.
Philadelphia Forgings supplies forged products
that have undergone the following types of annealing:
Full Annealing forgings restores the softness of the metal. The forging is heated
to a specific temperature then cooled in a furnace according to
specific time intervals for uniform softness through the entire
Normalizing involves heating the forging to a specific temperature and then
allowing the forging to cool in still air. The result is the restoration
of ductility. Normalized forgings are less expensive than full annealed
forgings because full annealing relies on furnace-controlled cooling.
and Tempering first normalizes the metal forging then heats
it again to a temperature between 400 and 600°C. Tempering establishes
the correct balance of strength and ductility within the forging.
Annealing is used for low carbon steel forgings. The forging
is heated to a temperature lower than those used in full annealing
or normalizing and then is allowed to cool in still air. This alters
the grain size and flow of the forging.
Spheroidizing is used for high-carbon steel forgings as well as tool steel and
alloy steel forgings. The process forms spheroids throughout the
structure of the forging which results in improved machinability.
Quenching and Tempering for Metal
Forgings that are quenched and tempered have
a good balance of strength and ductility. The steel and metal forgings
are rapidly cooled in water, oil, or saltwater bath, which increases
the hardness of the forging. The forging is then tempered to restore
softness within the metal forging to prevent snapping or shattering.