The 3 Critical Inspection Gates in Manufacturing
| Inspection Gate | Timing & Focus | Typical Testing Procedures |
|---|---|---|
| 1. Incoming Quality Inspection (IQC) | Raw materials and vendor parts received at stores prior to stocking. | Vernier dimensional checks, hardness testing, chemical test certificates, surface finish inspection. |
| 2. In-Process Quality Inspection (IPQC) | Semi-finished parts during fabrication and progressive machining. | First-piece approval, critical dimension monitoring, Go/No-Go gauges, weld penetration checks. |
| 3. Final Quality Inspection (FQC) | Completed products before packaging and dispatch approval. | 100% functional testing, high-voltage breakdown tests, cosmetic inspection, packaging verification. |
Why Quality Records Must Link to Transactional Data
When inspection logs exist only on paper inspection sheets, recurring machining defects remain hidden until customer rejections arrive. Digital QC locks inventory in quarantine upon receipt, prohibiting work-order issuance or shipping until approved by quality inspectors.
Production & Plant Control
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