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An internal auditor randomly checks the metrology room, carrying out a stack of calibration certificates: each one has a…
A mechanical processing company submitted an initial process capability report to a client, focusing on the roundness of…
A precision machining company supplies drive shafts to a new energy client. During the client's audit, a process capabil…
1. An Experiment That Reached the Opposite Conclusion A die casting company conducted a two level, three factor experime…
A modified plastic company supplies interior components to an original equipment manufacturer OEM . Tensile strength is …
During a process audit at an automotive parts company, an auditor pointed to the X̄–R control chart hanging on the wall …
An electronics company entrusted the final inspection of its assembly line to an online automatic inspection device: par…
A certain automotive parts company installed an online visual inspection system last year: after stamping parts are off …
1. Comprehensive Certificates, Yet Inconsistent Judgments A manufacturing company was releasing a batch of aluminum die …
An incident occurred at a machining company: during a quarterly inventory check, it was discovered that the scrap rate o…
1. Introduction: Why a "Beautiful" Kappa Report Was Rejected by the Customer A certain electronics manufacturing company…
A quality engineer at a machining company has been staring at a control chart for two months, feeling frustrated. The ma…