Case Study — High-Efficiency Infrared Curing System for an Industrial Coating Line-Dated Sep 15th,2026

Client industry: Metal fabrication & industrial painting   |   Location: Guangzhou, China   |   Solution: Through-type IR curing oven integrated with spray booth

Published in Cases  ·  CoatTech Intelligent Equipment (Guangzhou) CO., LTD

Site view — IR curing channel interior: ceiling and side heater arrays, aluminum frame, grated floor

Executive Summary

A long-standing CoatTech client producing metal fabricated parts needed to increase the throughput of its painting line without sacrificing coating quality. Hot-air drying cycles were long, and complex-shaped workpieces dried unevenly. CoatTech delivered and commissioned a through-type infrared (IR) drying and curing oven integrated directly into the existing spray-booth and conveyor line. The result: shorter curing cycles, more uniform surfaces, and a cleaner, safer working environment.

Challenge · Solution · Result

  01    System Overview

The delivered system is a through-type infrared curing oven that works in line with the client’s spray booth and automated conveyor. Red short / medium-wave IR tubes are mounted on the ceiling and both sidewalls, radiating heat directly onto the workpiece surface from multiple angles. Stainless-steel interior panels, an aluminum profile frame, observation windows, interlocked service doors and a grated maintenance floor make the unit robust, serviceable and safe for continuous production.

Top-down view — multi-row IR tube array with observation window, service door and drag-chain cabling

  02    Engineering Approach

Multi-angle radiation — ceiling + dual sidewalls eliminate cold spots on curved and fabricated parts

Zoned control — independent heating zones let the client tune flash-off and full-cure stages separately

Direct integration — conveyor interface and control logic synchronized with upstream spray and downstream inspection

Thermal & air management — exhaust, filtration and grated floor keep the cabin clean and manageable

Service-first layout — drag-chain cabling, access doors and removable panels simplify maintenance

  03    Outcomes & Feedback

Following commissioning, the client reported shorter curing cycles, more uniform coating surfaces and higher daily throughput — all while maintaining a cleaner and safer working environment. The modular design also leaves room to extend heater zones as production grows.

  04    Project Data

The table below summarizes the configuration delivered for this project. All values are tailored to the client’s workpiece size, coating chemistry and throughput requirements.

Through-type curing tunnel — multi-angle IR modules with double-door access

  05    What This Case Demonstrates

This project shows how a well-engineered infrared curing stage can remove a painting-line bottleneck without a complete line rebuild. For operations moving from hot-air drying to radiant curing — especially those applying water-based or multi-layer coatings — the gains in cycle time, energy response and finish consistency are immediate and measurable.

About CoatTech

CoatTech Intelligent Equipment (Guangzhou) CO., LTD designs and manufactures spray booths, complete coating lines, infrared curing ovens, overhead electric retractable canopy systems (paint-booth man lifts), paint mixing rooms, and other smart painting equipment. We support every project from layout and engineering through installation, commissioning and after-sales service.