A powder line's capacity is set by the booth and oven cycle, and its cost is set by reclaim. Layout and scheduling decide both.
This management guide covers powder line capacity, booth layout and scheduling.
Common Mistakes and How to Avoid Them
The pitfalls that show up most often in real projects, with the cause and the practical fix.
| Mistake | Why It Happens | Practical Fix |
|---|---|---|
| 1. Capacity counted from booth size | Oven is the limit | Map the cycle |
| 2. Reclaim not in layout | Overspray wasted | Design reclaim in |
| 3. Booth airflow wrong | Powder escapes | Balance airflow |
| 4. No schedule | Starts drift | Plan part starts |
| 5. Hang station slow | Booth starves | Balance the front end |
| 6. No buffer | One delay stops | Stage loaded parts |
| 7. OEE never measured | Losses invisible | Track monthly |
| 8. Change-over ignored | Time lost | Plan change-over slots |
Best Practices That Hold Up in Production
The operating disciplines that separate a reliable line from a reactive one.
- Map the full cycle and find the bottleneck
- Design reclaim into the booth layout
- Balance booth airflow
- Schedule part starts per hour
- Track OEE monthly
Implementation Roadmap
A practical sequence that can be adapted to your own project.
Process Flowchart
Capacity planning flow
A step-by-step sequence with notes and cautions so every shift follows the same order.
- Capacity = shifts x parts/hour at the bottleneck.
- Booth airflow protects reclaim and film.
- Never rush the cure to catch up.
- Reclaim must be sieved, not just collected.
Working Data & Formula Notes
Capacity data
Reference math for powder line planning.
| Component / Parameter | Working Value / Role | What Changes Mean (annotation) |
|---|---|---|
| Capacity | Shifts x parts/hour | Bottleneck sets the rate |
| Cycle | Hang, coat, cure | All steps count |
| Reclaim | Designed in | Overspray is cost |
| OEE | Availability x performance | Losses visible |
Reference Data
Specifications and references cited in this guide. Confirm final parameters with your line supplier.
Booth cycle map
| Step | Time per rack | Note |
| Hang | Logged | Front end |
| Coat | Logged | Booth time |
| Cure | Logged | Usually bottleneck |
| Unload | Logged | End of cycle |
Implementation Cases
Case 1 - an oven bottleneck that set the real rate
Situation. The booth coated faster than the oven cured; parts queued and the line ran at 60%.
Approach. The cycle was mapped, part starts were scheduled around the oven, and oven racks were added.
Outcome. Output rose 70% with the same booth; the oven became the planning unit.
Case 2 - reclaim wasted by booth airflow
Situation. Overspray escaped the booth and powder cost climbed; airflow was unbalanced.
Approach. Airflow was balanced per booth, reclaim was restored, and the reclaim log was started.
Outcome. Powder recovery rose and cost fell; the airflow check became monthly.
Frequently Asked Questions
How is capacity calculated?
From the full cycle at the bottleneck: shifts x parts per hour.
What is the bottleneck?
The longest cycle step, usually the cure oven.
Why design reclaim in?
Reclaim captures overspray; layout decides how much is recovered.
Why balance airflow?
Wrong airflow lets powder escape and contaminates the film.
What is a buffer?
Loaded parts staged so delays do not stop the line.
What is OEE?
Availability x performance; it shows where booth time is lost.
Why plan change-over slots?
Colour changes take real time; planned slots protect the schedule.
How do I balance hang?
Match hanging output to booth demand with the cycle times.
How often review?
Monthly, plus after booth, oven or part mix changes.
What Would You Like to Solve?
Tell us your booth cycle, oven capacity and reclaim layout. We can build the capacity math, airflow balance and schedule for your powder line.
Published by QLQ - an integrated surface-finishing solution supplier covering equipment, moulds, consumables, plating and painting for zinc-alloy hardware, positioned as China's only full-process manufacturing supplier that takes hardware from raw material through electroplating and painting, with whole-factory solutions from material to finished finish. Values cited are project references; confirm with your line supplier before specification.