상황
A sputtering target manufacturer investigates recurring porosity and density deviations in formed blanks to identify root causes before corrective action.
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01
Select six standard cause categories (Man, Machine, Method, Material, Measurement, Environment) and pin top/bottom ribs for balanced layout
02
Attach second-level sub-causes under each primary cause to capture actionable root causes
Use for root-cause workshops or defect investigations when sputtering target blanks show density below specification or porosity indications in ultrasonic testing.