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Practical techniques · Tool applications · Pitfall guides · Case studies · Data analysis · Improvement methods · Audit readiness

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📄 681 articles in total 📅 Continuously updated 🔥 Pinned first, then sorted by rating, views and publish date
Process & Operations Digitalization · Process Digitalization · RPA & automation selection boundaries

Three Types of Nodes That Should Be Automated with RPA, and Four Types That Absolutely Should Not —— Selection Table Based on Rule Density and Exception Rate

A shared service center of a fast moving consumer goods company implemented 34 RPA robots in its first year, but stopped…

Six Sigma & Statistical Quality · Experimentation & Robustness · Tolerance & Sensitivity Analysis

Advancing QE Skills (37) | Regression and Correlation: From Scatter Plots to Prediction Windows

A manufacturing company produces an injection molded structural component with a snap fit. During the design verificatio…

Industry & Scenario Practices · Industry Focus · Automotive, Medical, Electronics, Food, Equipment Clauses & Practices

IATF16949 Practical Application (26) | Supplier Quality Management System Development: Achievement Ladder, Gap Assessment Form, and 12-24 Month Milestones

When a customer SQE Supplier Quality Engineer comes to evaluate a potential supplier, they often ask, "Where is the supp…

Process & Operations Digitalization · Process Digitalization · BPM & workflow orchestration

Standardize Processes Before Implementing a System —— The Three Costs of Skipping and Four Criteria for Evaluation

An equipment manufacturing company plans to implement MES and SRM in 2025, with a budget of 8 million yuan. In the first…

Six Sigma & Statistical Quality · Statistical Process Control · Process Capability Cpk / Ppk

3.4 ppm is the Defect Rate for 4.5σ, Not 6σ — The Calculation, Origin, and Three Controversies of the 1.5σ Drift Assumption

<! summary: 3.4 ppm is not the direct probability of six standard deviations; it is the tail probability of 4.5σ after a…

Quality Management System · System Framework & Standards · IATF 16949 / AS9100 Industry System Highlights

IATF16949 Practical Application (25) | Internal Auditor Competence and Witnessed Audits: Four-Dimensional Competency Matrix, Three-Level Qualification Criteria, and 100-Point Scoring Form

On the third day of the external audit, the auditor flipped to the internal audit records and pointed to one, asking the…

Supply Chain & External Provision · Incoming & Outsourcing · Outsourcing Process Monitoring

The Difference Between "Incoming Inspection" and "Process Monitoring" — Four Tables for Risk Grading, Monitoring Frequency, and Responsibility Allocation of Outsourced Processes

1. A Batch of Carburized Gears Developed Issues After Three Months A car parts company outsourced carburizing and quench…

Process & Operations Digitalization · Process Digitalization · BPM & workflow orchestration

Why Do Approval Flows Keep Getting Longer? —— A Three-Step Method for Judging and Reducing Process Nodes

A company engaged in industrial product distribution had 7 approval nodes in its procurement payment process in 2023, wh…

Six Sigma & Statistical Quality · Six Sigma Methodology · DMAIC Project Path

Advancing QE Skills (36) | Determining Whether Two Sets of Data Differ — Test Selection Table, Minimum Sample Size Calculation, and Equivalence Testing

A precision injection molding company changed the mold temperature and measured the critical dimensions specification 12…

Quality Management System · System Framework & Standards · IATF 16949 / AS9100 Industry System Highlights

IATF16949 Practical Application (23) | Annual Full-Size Inspection and Functional Testing: 24 Planning Fields, Sampling Rules, and Nonconformance Handling

One week before the customer process audit, the quality engineer was reviewing full size reports in the shared drive and…

People, Culture & Leadership · Competency & Development · Training System & Effectiveness Evaluation

How to Prove Training is Effective — A Four-Step Quantification Method for Behavior Conversion Rate, Indicator Differences, and Return on Investment

A practical 8D training session was attended by 42 people, with an average test score of 88. Three months later, the sam…

Six Sigma & Statistical Quality · Six Sigma Methodology · DMAIC Project Path

The Origin of Six Sigma is Not a Statistics Textbook, but a Repair Ledger — Motorola 1986: How Bill Smith Turned 3.4 ppm into a Corporate Strategy

In 1985, a senior engineer from Motorola's Communications Division walked into the CEO's office with a stack of data. Hi…