| Job Title |
Piercing-machine Operator |
| Job Description |
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. Attaches Specified Piercing Point To Arbor To Form
And Control Size Of Internal Diameter Of Tube. Adjusts Feed
Guides, Stops, Tailstock, And Arbor Rings According To Size Of
Workpiece, Using Handtools. Moves Levers To Control Movement Of
Heated Billet As It Advances Through Rolls And Over Piercing
Point. Measures Finished Workpiece To Verify Conformance To
Specifications, Using Calipers, Fixed Gauges, And Micrometers.
May Be Specified By Employer According To Experience With
Particular Material Worked Or Machine Operated.
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