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Atmosphere Capability

We have the capability to heat treat material to a Maximum of 30"High X 48" Wide X 84" in length with a 4,000lbs Maximum weight per load up to a maximum operating temperature of 1900 degree fahrenheit.

Our Services include

Horizontal atmospheric carburizing,
Solution annealing
Hardening and tempering
Oil Or Water Quenching

We also have an internal quench line with the ability to heat treat small diameter parts in batches up to 400lbs including finished machined parts. The benefit of the internal quench line is that the parts are not exposed to the air and do not get any oxidization on the surface of the parts

Vertical Capability

We have the capability to heat treat parts to a maximum size of 41" diameter X 120" long with a maximum weight of 4,000lbs per load
at a maximum operating temperature of 1900 degrees fahrenheit

Our Services Include

Vertical atmospheric normalizing
Solution annealing
Hardening and tempering
Oil Water or Air Quenching

We specialize processing high value gears, flight safety parts, mandrels for oil field application. The benefit of heat treating vertically means the parts have less chance of distorting as opposed to running horizontally.

Please contact us with your requirements and let our experts resolve your heat treating problems.

Induction Hardening Department

Lone Star has a fully equipped Induction Department
We have state of the art N/C touch screen vertical scanners, they are all capable of hardening up to 36" between centers.

For deep case induction hardening we have a power supply coupled with a vertical scanner capable of processing material up to 10' in length with 112" centers.


Induction heating is the process of heating a metal object by electromagnetic induction, where eddy currents are generated within the metal and resistance leads to Joule heating of the metal. An induction heater consists of an electromagnet, through which a high-frequency Alternating current (AC) is passed. Heat may also be generated by magnetic hysteresis losses.

The most common applications are induction hardening of steel parts; Induction heating can produce high power densities which allow short interaction times to reach the required temperature. This gives tight control of the heating 'pattern' with the pattern following the applied magnetic field quite closely and allows reduced thermal distortion and damage, Lone Star has the ability to produce parts with varying properties.
The hardening process is used to produce a localized surface hardening of an area that needs wear-resistance, while retaining the toughness of the original structure as needed elsewhere. The depth of induction hardened patterns can be controlled through choice of induction-frequency, power-density and interaction time.

Please contact us to discuss your requirements