Complete Coating Lines
Pre-treatment System
Spray / immersion / tank immersion processes
Complete Coating Lines
Overview
Pre-treatment System covers the pretreatment, curing, thermal or heat-recovery stage of a coating line: Spray / immersion / tank immersion processes. Selected by part material, film thickness, output and local energy mix, and interlocked with the booth and conveyor on the same cycle.
Key Features
Spray pre-treatment
Chemical pre-treatment using mechanical spraying, combining chemical displacement with mechanical impact. Short processing time and device length; enclosed structure with no harmful gas leakage; highly automated.
Immersion pre-treatment
Suspended chain conveyor for chemical pre-treatment. Suitable for complex-shaped parts and automation; longer cycle and larger footprint.
Tank immersion pre-treatment
Suspended-basket batch chemical pre-treatment with small footprint and low equipment cost; automation possible with an automatic crane.
Applications
- New powder or e-coating lines
- Capacity expansion and re-balancing of an existing line
- Emission compliance and energy-consumption upgrades
- Heat recovery and secondary-combustion retrofits
How It Works
A line is organised in four stages — pretreatment, spraying, curing, thermal. Pretreatment is chosen by part: spray, dip or tank immersion; the curing oven by site: straight-through, semi-bridge, bridge, conveyor or batch oven.
Thermal and heat recovery: natural gas, biomass pellets or infrared depending on local energy; the recovery stage uses secondary combustion and a heat exchanger to return oven exhaust heat to pretreatment drying.
Model Comparison
| Model | Highlights | Key Spec |
|---|---|---|
| Pre-treatment System | Spray / immersion / tank immersion processes | Spray / immersion / tank immersion processes |
| Drying & Curing Oven System | Straight-through / semi-bridge / bridge / conveyor / batch ovens | Straight-through / semi-bridge / bridge / conveyor / batch ovens |
| Thermal Energy System | Natural gas / biomass pellet / infrared radiation | Natural gas / biomass pellet / infrared radiation |
| Waste Heat Utilization System | Lower emissions · heat recovery · secondary combustion | Lower emissions · heat recovery · secondary combustion |
FAQ
How is the capacity of a coating line determined?
Back-calculated from hanger density, conveyor speed and oven length. Pretreatment, booth and oven must share the same cycle, otherwise the oven becomes the bottleneck.
Which applications is the Pre-treatment System suitable for?
Spray / immersion / tank immersion processes. Suitable for complete lines combining pretreatment, coating, curing and thermal systems.
How long does customisation and delivery take?
Typically 25–40 days for a single machine and 60–90 days for a complete line, counted from process confirmation and sample approval.
Delivery & Service
- Cycle time back-calculated from hanger density, conveyor speed and oven length, with all three stages on the same cycle
- Heat balance, energy calculations and emission data provided
- On-site installation and oven ramp-curve commissioning
- 12-month line warranty including an annual inspection
