A professional who controls one or more furnaces to heat treat metal objects according to specifications. Respnsibilities include:

• Places parts in racks, trays, or baskets, and places objects on conveyor or loads objects directly into furnace.
• Adjusts furnace temperature and observes pyrometer to heat metal to prescribed temperature.
• Sets speed of conveyor for prescribed time cycle, or records removal time of parts to ensure objects attain specified temperature for a specified time.
• Removes parts after prescribed time and quenches parts in water, oil, or other bath, or allows parts to cool in air.
• May test hardness of parts.
• May feed die-quenching machine to prevent parts from warping.
• May degrease or remove scale from parts.
• May draw wire or sheet metal through furnace and attach metal to winding mechanism that pulls metal through furnace.