Shrink Pit Operator

Control shrink-pit furnaces to assemble hoops and liners to tubes.
picture of Shrink Pit Operator

Quick Stats

Salary Range
$22,000 – $51,000

Data from U.S. Department of Labor

What do Shrink Pit Operators do?

Controls shrink-pit furnace to assemble hoops and liners to tubes to form cannon barrels: Positions steel blocks in shrink-pit to form angle for subsequent positioning of tube so that breech end of tube will be at floor level. Cleans and oils contact surfaces of parts with gasoline, oil, and graphite to facilitate assembly. Lowers hoops into furnace, using hoist. Moves furnace controls and observes thermocouple pyrometer and recording potentiometer to heat furnace to specified temperature. Guides cold tube, lowered by crane, through hot hoops in furnace. Turns water valve on cooling ring and lowers ring into furnace, using hoist, to spray hoops and shrink them onto tube. Reheats hoop and tube assembly, guides liner into tube, and regulates water spray to shrink tube onto liner.

Should I be a Shrink Pit Operator?

You should have a high school degree or higher and share these traits:
  • Reliable: You can always be counted on to do a good job.
  • Independent: You enjoy flying solo and doing things your own way.
  • Flexible: You're open to change and think variety is the spice of life.

  • How to become a Shrink Pit Operator

    Most Shrink Pit Operators have no higher education and get on-the-job training. Think about earning a Certificate to increase your competitiveness in the field. Chart?chd=s:a9baaa&chl=|no+college+%2897%25%29|certificate+%283%25%29|||&cht=p3&chs=466x180&chxr=0,0,97
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