Heat Treating - Induction Hardening - Annealing and Stress Relieving

There is a wide range of heat treating capabilities within the group including: annealing, austempering, carbonitriding, carburizing, cryogenic, ferritic nitro carburizing, hardening, induction brazing, induction hardening, marquenching, normalizing, nitriding, quenching, stress relieving, tempering, and tool hardening.

Additonal capabilities include: tumble blasting, table blasting, straightening, lab services, metallurgical consultation and engineering.

Annealing

A generic term denoting a treatment, consisting of heating to and holding at a suitable temperature followed by cooling at a suitable rate, used primarily to soften metals, but also to simultaneously produce desired in other properties or in microstructure.

Austempering

A heat treatment for ferrous alloys in which a work piece is quenched from the austenitizing temperature at a rate fast enough to avoid formation of ferrite or pearlite.

Carbonitriding

A case hardening process in which a suitable ferrous material is heated in a gaseous atmosphere of such composition as to cause simultaneous absorption of carbon and nitrogen by the surface. Cooling at a rate that produces the desired properties in the work piece completes the process.

Carburizing

Absorption and diffusion of carbon into solid ferrous alloys, enabling the surface layer to be hardened either by quenching directly from the carburizing temperature or by cooling then reaustenitizing and quenching.

Ferritic Nitro Carburizing

A process in which both nitrogen and carbon are absorbed into the surface layer of a ferrous metal at temperatures below the lower critical temperature. This process is done primarily to provide an antiscuffing surface layer and improve fatigue resistance and corrosion.

Hardening

Increased hardness by suitable treatment, usually involving heating and cooling.

Induction Hardening

A surface-hardening process in which only the surface layer of a suitable ferrous work piece is heated by electromagnetic induction and immediately quenched.

Marquenching or Martempering

A hardening procedure in which an austenitized ferrous work piece is quenched into an appropriate medium.

Normalizing

Heating a ferrous alloy to a suitable temperature above the transformation range and then cooling in air.

Quenching

Rapid Cooling by various mediums, air, brine, oil, water, etc.

Stress Relieving

Heating to a suitable temperature, holding long enough to reduce residual stresses, and then cooling slowly enough to minimize the development of new residual stresses.

Temper

In heat treatment, reheating hardened steel or hardened cast iron for the purposes of decreasing hardness and increasing toughness.

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