The Induction Process
This process consists of heating a small area of a part using induced electric currents. Hardening occurs when the part is rapidly cooled from a temperature above the transformation range; using quenchants such as water, oil, etc.
Carburize
This is a surface or case hardening process normally applied to low-carbon steel alloys. During processing, carbon is diffused
into the surface of the parts at elevated temperatures. Hardening occurs to this "carburized case" by quenching in oil from above
the transformation range resulting in a hard surface for wear resistance and a soft core for ductility. Typical case depths achieved range from .020" to .050".
Carbonitride
Similar to carburizing except carbon and nitrogen are diffused into the surface of
the parts. The nitrogen addition increases hardenability of the steel allowing a lower
alloy, less expensive steel to be used. Typical case depths achieved range from .005" to.030".
Cryogenic Treatment
Exposing to suitable subzero temperatures for the purpose of obtaining desired
conditions or properties such as dimensional or micro structural elimination
of
retained austenite, it is usually followed by tempering.
Work Load Size - 60" x 30" x 30"
Quench & Temper
This process is for hardening medium carbon alloy steel. This consists of heating
the parts to a temperature above the transformation range and rapid cooling to
room temperature, usually using an oil quench. This may be performed in air or
in a controlled atmosphere to protect the part's surface. Parts are then reheated
to a low temperature to temper to the desired final hardness range. Quench &
temper of medium carbon alloy steels increases both strength and hardness.
Stress Relieve
This is a process using controlled heating and cooling to relieve machining or welding
stress from large parts or weldments. Time and temperature relationships are developed
based on prior hardness requirements or by the size and complexity of weldments.
Stress relieving will minimize part distortion during subsequent heat treatment or while
in service.
The stress relief furnace treats 5x4x8' work pieces up to 1200° (F) maximum.
Annealing
This process consists of heating to a temperature above or slightly below the transformation range
followed by slow, controlled cooling. Annealing is used to develop a soft easily machined structure.
Annealing is usually followed by some type of hardening process after machining.
Cleaning
Sweco vibratory cleaning is available to produce clean,
attractive looking parts.
Duplex Treatments
Ion plus induction to produce deep heating characteristics with very high surface wear resistance.
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