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Job Description:

  • 1) Operates gas furnace that heats metal gun parts to rustproof and impart decorative nonreflecting blue finish: Sprays parts with steam to remove grease, grit, and dirt.

  • 2) Places parts in barrel of gas furnace and covers parts with mixture of bone chips and whale or pine tar oil.

  • 3) Closes furnace door and moves lever to rotate barrel.

  • 4) Turns gas valves and observes pyrometer to regulate temperature of furnace.

  • 5) Opens door after furnace cools, and pulls lever to tilt barrel and dump contents into sieve.

  • 6) Sifts parts from bone mixture and quenches parts in oil.

  • 7) Blows oil and chips from blued parts, using airhose.

  • 8) Examines parts to ensure shade and color conform to specifications, utilizing knowledge of heat-treating methods and metal properties.




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End Of Job Description for: "HEAT-TREATING BLUER"
DOT:   504.682-022

Job Number: 4867