In the event of defects (such as false contact, detachment, oxidation, or poor contact), what are your 8D/RCFA corrective and preventive measures and traceability mechanisms?

If a defect occurs (e.g., false/poor crimp, withdrawal/pull-out failure, oxidation/corrosion, poor contact/electrical failure), we follow a structured 8D / RCFA process and a robust traceability mechanism to contain issues and prevent recurrence.

1. Immediate containment (D1–D2) Stop shipment/hold the affected lot and related inventory (including WIP and finished goods if needed). Isolate suspect parts and perform sorting/screening based on the defect type (visual criteria and/or test criteria). Record the containment action time, lot number, and affected quantity.
2. Investigation & RCFA (D3–D7) Conduct a root cause analysis using RCFA tools such as: 5-Why, Fishbone (Ishikawa) process review (tooling settings, die wear, calibration status) material review (plating/coating, alloy/finish certificates, inspection results) test method and measurement system check (gauge condition / MSA if relevant) Typical root-cause categories include: wrong wire/strip length or conductor type crimp tooling misalignment or die wear parameter drift (crimp force/cycle settings, machine condition) plating/coating defects or storage/handling issues leading to oxidation connector/mating interface mismatch causing contact problems
3. Corrective actions (D5) & verification Define corrective actions by implementing controls such as: adjust crimp tooling / re-calibrate machine settings replace worn dies and introduce periodic tooling verification update strip length/feeding requirements and lock process parameters strengthen incoming checks for coating/material when oxidation or finish-related issues occur add/strengthen in-process checks (e.g., crimp dimension gauge checks, pull-out sampling, resistance/continuity checks if required) Verify effectiveness by running a containment effectiveness test and repeating key tests on re-produced samples.
4. Preventive actions (D6–D7) Standardize the improved process (work instructions, control plan updates). Implement long-term controls: SPC monitoring of CTQs, updated AQL/sampling rules, additional maintenance intervals, and training for operators. Update documentation for part handling/storage (anti-corrosion/ESD and shelf-life controls).
5. Traceability mechanism Each production lot is linked to: incoming material batch, plating/finish lot (if applicable), process records, and final inspection/test records. We maintain full lot traceability so that, if a customer reports a failure, we can identify affected lots and perform rapid containment.
6. Communication & closure (D8) Provide an 8D report including: problem description, containment, root cause, corrective/preventive actions, verification results, and closure timing. Closure is confirmed only after effectiveness verification meets the acceptance criteria. If you share your defect scenario (what failure mode, suspected terminal part number, wire size, and where it was found—incoming, crimp station, or end-of-line), we can align the RCFA approach and expected turnaround.