VACUUM FURNACE. A furnace using low atmospheric pressures instead of a protective gas atmosphere like most heat-treating furnaces. Vacuum furnaces are categorized at hot wall or cold wall, depending on the location of the heating and insulating components.
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VACUUM ANNEALING. Annealing carried out at sub-atmospheric pressure.
SURFACE HARDENING. A generic term covering several processes applicable to a suitable ferrous alloy that produces, by quench hardening only, a surface layer […]
STATISTICAL PROCESS CONTROL. The application of statistical techniques for measuring and analyzing the variation in processes.
SELECTIVE HEATING. Intentionally heating only certain portions of a workpiece.