SHIM. A thin piece of material placed between two surfaces to obtain a proper fit, adjustment, or alignment. The piece can also be analyzed to measure furnace carbon potential (that is, because while in the furnace it will quickly carburize to a level equal to the furnace carbon potential).
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TOTAL CARBON. The sum of the free and combined carbon (including carbon in solution) in a ferrous alloy.
SUPERCOOLING. Cooling below the temperature at which an equilibrium phase transformation can take place, without actually obtaining the transformation.
SOAKING. Prolonged holding at a selected temperature to effect homogenization of structure or composition.
WATER QUENCHING. A quench in which water is the quenching medium. The major disadvantage of water quenching is its poor efficiency at the […]