Job Description:

• 1) Sets up and operates piercing machine to shape metal tubes from billets or enlarge inside diameter of shells according to job order or blueprints: Selects, positions, and adjusts piercing rolls, which rotate and shape outside of tube, using hoists, wrenches, measuring instruments, and knowledge of metal properties.

• 2) Attaches specified piercing point to arbor to form and control size of internal diameter of tube.

• 3) Adjusts feed guides, stops, tailstock, and arbor rings according to size of workpiece, using handtools.

• 4) Moves levers to control movement of heated billet as it advances through rolls and over piercing point.

• 5) Measures finished workpiece to verify conformance to specifications, using calipers, fixed gauges, and micrometers.

• 6) May be specified by employer according to experience with particular material worked or machine operated.