Scope of this guide
Junior version: what you will see, what you record, and what you never touch. Recognise early, escalate fast.
This series answers a top recurring question from finishing forums with platingclub line practice. Parameters are industry-standard starting ranges — confirm against your supplier TDS.
Triage: symptom → confirm → first move
| Observation | Likely cause | Confirm by | First move |
|---|---|---|---|
| Thickness below spec on time | Dose under-counted | Amp-min per kg log | Recalculate by weight, not barrel count |
| Outer parts thicker | Normal barrel gradient | Sample by position | Extend cycle; sample per spec points |
| Cycle drifting longer | Contact resistance rising | Dangler tips check | Clean/replace danglers |
| Burns after time extension | CD ceiling reached | Burn map by position | Split load or lower current |
| Thickness scatter widens | Load size variance | Weigh-in records | Standardise load weight |
Recognise, record, escalate
| You see | You do | You never do |
|---|---|---|
| Thin reading | Re-read per gauge manual, log position | Add 10 minutes and hope |
| Burn marks | Note position in barrel, report | Scrap parts silently |
| Weigh-in skipped | Weigh it now, flag the miss | Estimate the weight |
| New part family | Ask for the load card before running | Copy last family's settings |
Engineer notes
- One variable per corrective action; verify by the confirm-by column.
- Records beat memory: log every trial on the tank card.
- Escalate when two consecutive actions fail — that is a senior call.
Safety: barrels, hoists and live bus bars share one line. Heat gloves for loads, lock-out before contact service, and never reach into a running barrel.
FAQ
How do I know the cycle is long enough?
The load card: amp-min per kg target. Gauge the sample parts at cycle end, log the numbers.
Where do I measure thickness in a barrel load?
Per the sample plan: outer, center, inner parts, both faces. Position matters more than count.
Why weigh every load?
Dose is per kilogram; weight is the denominator. Skipping it makes the cycle a guess.