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A manufacturing company's welding line was experiencing excessive spatter. The process engineer planned two actions: red…
<! summary: These four are not four stages, nor are they a choice of four. ISO 9001 is a qualification threshold, only p…
A manufacturing company produces an injection molded structural component with a snap fit. During the design verificatio…
<! summary: 3.4 ppm is not the direct probability of six standard deviations; it is the tail probability of 4.5σ after a…
A precision injection molding company changed the mold temperature and measured the critical dimensions specification 12…
In 1985, a senior engineer from Motorola's Communications Division walked into the CEO's office with a stack of data. Hi…
When GR&R reaches 28%, the first suggestion at the review meeting is usually to "measure each piece twice more and take …
Control chart software defaults to enabling all eight out of control rules, which may seem very "rigorous." However, eac…
A certain automotive parts factory submitted a new project process capability report to the original equipment manufactu…
The IQC of a motor manufacturing company conducts incoming inspection on the motor shaft diameter φ20±0.05. The quality …
Last week, a quality manager told me about an incident over the phone: a batch of bearing holes was fully inspected by I…
Introduction: These 12 Questions Almost Always Appear in Every SPC Training Session After each SPC training, the questio…