Vitreous and porcelain enamel — a glass finish fused to steel and cast iron at high temperature. A core STRONG3000 engineering specialty, distinct from powder coating.
Powder enameling applies a vitreous (glass-based) enamel powder to metal parts, which is then fired at high temperature so it fuses into a hard, glass-like surface. The result is a finish that resists heat, corrosion, chemicals and abrasion far beyond an organic coating.
STRONG3000 engineers the complete enameling line — pretreatment, application, drying, high-temperature firing, powder recovery and automation — with deep experience in flat, deep and cavity part geometries.
An automatic powder enamel system for deep parts such as oven cavities. Parts pass through the booth on an overhead conveyor while automatic gun reciprocators apply the enamel.
An automatic powder enamel system for flat parts such as panels and sheets. The booth is sized to the part dimensions and line speed.
A system that applies powder enamel to the inside and outside surfaces of pipes. The pipes hang vertically on the conveyor as they pass through the booth, and automatic gun reciprocators apply the enamel.
An automatic powder enamel plant with a rotary table for cooktop burner caps. The caps are coated on the rotary table by automatic guns.
An automatic powder enamel plant for boiler and water heater tanks. The lance gun enters the tank through the bottom flange; excess powder is extracted from inside the tank and recovered.
A powder enamel system that applies more than one color in a single booth via a color center. The standard build has 4 colors; it can optionally be built for 2 or 3 colors.
The two processes look similar on the line, but the material, temperature and result differ. We explain the basics and the differences in the Knowledge Center.
What vitreous enamel is, what happens at 780–850 °C on steel and 530–570 °C on aluminum, and where powder enamel and wet enamel diverge — an end-to-end guide.
Electrostatic charging, the cure window and recovery — how a powder coating line works.
Which part needs powder coating and which needs enamel? A decision guide based on temperature, durability and cost.
Surface preparation before enameling is carried out with a spray (tunnel) or dip washing line consisting of degreasing and rinsing stages. A surface free of oil and dirt is the foundation for the enamel to fuse properly to the steel.
As parts travel through the tunnel on the conveyor, degreasing and rinsing solutions are sprayed through pressurized nozzles at each stage. The continuous flow gives repeatable surface preparation in series production.
Parts are lowered fully into the degreasing and rinsing tanks in sequence by a hoist. The solution also reaches inner cavities and deep surfaces that spraying cannot reach.
After washing, parts are freed of moisture in a dry-off oven before the enamel is applied. Because water left on the surface directly affects how the enamel powder adheres and the surface quality after firing, drying is sized to the part geometry and line speed.
The enamel powder (glass frit) is fired at about 780–850°C to fuse it to the steel. Ovens are sized to the part load and line speed, with gas or electric heating.
The conveyor makes a U-turn inside the oven, so the entry and exit are on the same side. It takes up less floor space than a long straight tunnel.
A batch oven that works step by step. Parts enter the oven on hangers, the sliding door closes and firing takes place; the door then opens and the parts come out.
Parts are fired as they pass continuously through the oven on the overhead conveyor. It is intended for high-volume series production lines.
If required, the application area is enclosed in an insulated room with controlled temperature and humidity, so coating conditions stay stable regardless of the season.
Panel construction, climate control and air circulation keep the application zone under stable conditions. The room is planned together with the booth and application equipment.
Manual and automatic powder enamel guns, with OWL intelligent motion for deep and cavity parts.
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Easy-clean booths and recovery engineered for enamel powders and multi-color work.
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High-temperature firing ovens (box, conveyor and U-type) dimensioned to part and throughput.
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Enamel injectors, sieving and feeding tuned to enamel powder behavior.
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Reciprocators, robotics and conveyor control for consistent, high-volume enameling.
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Degreasing and surface preparation suited to steel and cast iron substrates.
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Also: Architectural & signage panels
STRONG3000 combines mechanical and electrical engineering, automation, control software and application technology in a single organization — so responsibility for the whole line stays in one place.
Booths, conveyors, ovens and recovery hardware.
Power, control cabinets and line wiring.
Reciprocators, robotics and PLC control.
Smart AI platform and line integration.
Gun, injector and powder delivery development.
Factory acceptance testing and on-site start-up.
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An electrostatic powder enamel coating plant with a climate room for cavity (oven interior) parts.
A powder enamel coating plant project for cavity parts.
Automated enamel application and material handling plant for flat parts.
Discuss your part, firing requirements and capacity directly with STRONG3000's engineering team.
Tell us about your enamel part and firing requirements. A STRONG3000 engineer will respond with a tailored approach.