Fully Automatic Vertical Lifting Electrophoretic Coating Line
Fully Automatic Vertical Lifting Electrophoretic Coating Line
LENDEER'sfullyautomatic vertical lifting e-coating linecombines chain-driven vertical lifting and horizontal transfer with PLC control for high-volume, single-color production of small-to-medium metal parts. Multiple racks can be processed at different stages simultaneously, improving throughput while maintaining a compact tank layout. To compare this system with other automation layouts, view ourelectrophoretic coating line configurations.
The line operates on a dual-motion mechanism: a vertical lift raises and lowers the work hanger into and out of each process tank, while a horizontal transfer mechanism moves the hanger along the tank row to the next station. This vertical lift + horizontal transfer cycle is driven entirely by chain transmission — a mechanically proven, low-maintenance drive system that delivers smooth, precise motion and consistent process timing across all production shifts.
PLC-based intelligent control governs the entire operation. The line supports simultaneous processing of two or more racks at different stages — while one hanger is in the e-coat tank, another is in the phosphating stage, and a third is being rinsed — maximizing equipment utilization and achieving production efficiencies that rival chain conveyor lines at a fraction of the footprint and investment cost. LENDEER supplies this line as a complete, turnkey e-coat system.
Complete E-Coating Line Process Flow
The turnkey line integrates pretreatment tanks, an e-coat tank and rectifier, UF recovery, DI water treatment, PLC controls and a curing oven. Individual units are available through ourelectrophoretic coating equipmentrange. Compatibleelectrophoretic paintcan be selected according to the substrate, target film appearance, curing conditions and corrosion-resistance requirements.
LENDEERsupplies the complete end-to-end electrophoretic coating line — from pre-treatment through to curing oven — as a fully integrated, turnkey system. Taking black epoxy electrophoretic coating for iron workpieces as an example,the standard process sequence is:
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Process Stage |
Details |
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1 |
Loading |
Workpieces are mounted on hangers or racks and loaded onto the conveyor system. Hanger design is customized for workpiece geometry. |
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2 |
Pre-Degreasing (Spray) |
High-temperature alkaline spray removes bulk oils and metalworking lubricants from the workpiece surface. |
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3 |
Main Degreasing (Spray/Immersion) |
Complete removal of all surface contaminants. Critical foundation for downstream process quality. |
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4 |
Water Rinsing |
Multiple rinse stages remove chemical residues. Later stages use pure (DI) water to prevent ionic contamination. |
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5 |
Surface Conditioning |
Titanium colloid treatment activates the metal surface for uniform phosphate crystal nucleation. |
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6 |
Phosphating |
Zinc or iron phosphate conversion coating improves e-coat adhesion and corrosion resistance by 3–5×. |
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7 |
Pure Water Final Rinse |
DI water rinse (< 10 μS/cm) removes all ionic residues immediately before the e-coat tank. |
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8 |
Electrophoretic Coating |
Workpieces are immersed in the e-coat bath. DC voltage drives uniform paint deposition on all surfaces. |
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9 |
UF Permeate Rinse |
Post-electrophoresis rinsing with UF permeate recovers drag-out paint (>90% recovery). |
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10 |
Curing Oven |
Baking at 180–190 °C for 20–30 min cross-links the e-coat film into a hard, durable, corrosion-resistant finish. |
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11 |
Unloading & Inspection |
Finished workpieces are unloaded, inspected for film thickness, adhesion, and appearance, and transferred to the next process. |
Process stages are customized to your workpiece material, contamination type, and coating quality requirements. LENDEER provides full process engineering documentation for each project.
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