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An integrated washing and coating line is a complete, end-to-end system that automates the entire surface finishing process. It conveys parts through a series of stages—from multi-stage washing and pre-treatment to drying, coating application (liquid or powder), and final curing—to produce a durable, high-quality finish consistently.

A perfect finish begins with a perfect surface. The success of any coating is 90% dependent on the quality of the pre-treatment. Our integrated lines are engineered with this principle in mind. We design the optimal washing and pre-treatment stages (e.g., degreasing, phosphating) to ensure the surface is pristine and ready for adhesion. Parts then move through a drying oven before entering the environmentally controlled coating booth where liquid or powder paint is applied. Finally, a curing oven provides the controlled temperature profile needed to create a hard, durable finish. The entire process is automated around a central conveyor system for a seamless flow.

Process Stages: Multi-stage Pre-treatment (degreasing, rinsing, phosphating), Drying, Coating Application, Curing.
Coating Technology: Liquid Spray (HVLP, electrostatic), Powder Coating (electrostatic), Dip Coating.
Conveyor Systems: Overhead Power & Free, Monorail, Flat-line belt conveyors.
Ovens: Convection, Infrared (IR), or combination drying and curing ovens.
Environmental: Contained spray booths, water treatment/recycling systems, VOC abatement.

The Part: What is the product? Provide its material, size, weight, and complexity.
The Specification: What is the required finish standard (e.g., coating thickness, salt spray test hours)?
The Throughput: How many parts per hour need to be processed?
The Environment: What are the site's environmental regulations regarding water and air emissions?

Material option A System Structure: Stainless Steel 304/316L (for wet stages), Painted Carbon Steel

Material option B Industrial grade, chemical-resistant linings for process tanks

Finish Brushed\Polished

Dimensions Custom made design and built by your requirements

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SEO Meta Title Washing & Coating Lines | Automated Surface Treatment & Finishing

SEO Description We engineer and build complete, automated washing and coating lines. Turnkey solutions for pre-treatment, washing, drying, liquid/powder coating, and curing for industrial parts.

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FAQ -

Q1: Why is the pre-treatment (washing) stage so important for a quality coating?
A1: A coating's long-term performance (adhesion, corrosion resistance) is 90% dependent on surface preparation. The pre-treatment stages remove invisible oils and contaminants and can apply a conversion coating (like iron phosphate) that creates a microscopic, crystalline structure for the paint to anchor to. Skipping this is the number one cause of paint failure.
Q2: What's the difference between liquid paint and powder coating, and which is better?
A2: Liquid paint uses a solvent or water base that evaporates. Powder coating applies a dry, electrostatically charged powder that melts and cures into a coating in an oven. "Better" depends on the application. Powder coating is generally more durable, scratch-resistant, and environmentally friendly (no solvent emissions). Liquid paint offers a wider range of colors, finishes (e.g., metallic), and can be applied in thinner layers.
Q3: How do you ensure complex-shaped parts are coated evenly?
A3: Through a combination of smart conveyor design and application technology. The conveyor can be programmed to rotate or index the part as it passes the spray guns. For electrostatic systems (both liquid and powder), the charged particles are naturally attracted to the grounded part, creating a "wrap-around" effect that helps coat hard-to-reach areas.
Q4: How do you manage water consumption and wastewater from the washing stages?
A4: We design the washing tunnel with sustainability in mind. This includes multi-stage, counter-flow rinsing (where the cleanest water is used for the final rinse and then reused for earlier stages) and integrated water filtration and recycling systems to dramatically reduce both water consumption and the volume of wastewater that requires treatment.
Q5: We have very heavy parts. What kind of conveyor system is used for a coating line?
A5: For heavy or large parts, the standard solution is an overhead conveyor system, such as a "Power & Free" or "Monorail". The parts are hung from custom-designed fixtures on carriers that travel along a robust track. This is ideal for transporting parts through long, multi-stage tunnels and ovens.

Integrated Washing & Coating Lines

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