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DOT Code: 679.384-010

Industry: electron. comp.

Performs following duties to produce seed cores from silicon crystal ingots for use in crystal growing process: Tends saw that cuts ingot into specified lengths. Determines crystal orientation of ingot sections, using x-ray equipment, and draws orientation lines on ingot. Positions ingot sections on chuck of drill according to crystal orientation and activates drill that automatically removes seed core from ingot. Grinds seed core to smooth rough edges, using sanding machine, and x rays and marks seed core to indicate crystal orientation. Tends machine that cuts groove in seed core. Cleans seed core to remove contaminants, using ultrasonic and etching equipment. Wraps finished crystal in protective paper. Records production information.

GOE: 06.02.09 STRENGTH: M GED: R3 M3 L2 SVP: 5 DLU: 86