Spraying

What's Spraying?

Spraying is an extremely common surface treatment process for parts. It mainly involves using a spray gun or a disc atomizer, utilizing pressure or centrifugal force to disperse the coating into uniform and fine droplets, which are then applied to the surface of the object being coated. The spraying surface treatment process is suitable for different materials such as metal and plastic.

Spraying is a general term for a surface treatment process. It further subdivides into various types.

Quote for Sprayed Parts

Paint Spraying

Powder Coating

Thermal Spraying

Thermoplastic Spraying

Ultrasonic Spraying

Spray Coating Cases

Affected by the thickness of Spraying

Color Quality

The quality of the color is affected, with different thicknesses resulting in variations in surface color.

Abrasion Resistance

The thickness of the coating affects abrasion resistance and adhesion.

Structural Impact

In areas where components fit together, such as buttons, an overly thick coating can hinder assembly, while an overly thin coating can wear off easily.

Cost Efficiency

An overly thick coating increases the amount of paint used, thus raising costs. Additionally, a thicker coating can affect spraying time, indirectly increasing production costs.

Reference for Inspection Standards of Spray-coated Parts

Test Item	Inspection Standard
Appearance	Color must match the color card and be glossy (within sample limits). ? No scratches or fingerprints. ? No uneven color, dirt, particles, or uneven spraying. ? No rust. ? Cut edges must not have sharp burrs or edges.
Salt Spray Test	No bubbles or rust should occur. ? 5% saltwater at 35°C, continuous spray time as per customer requirements.
Coating Hardness	Pencil hardness should be above H, with no damage or scratches on the paint surface. ? Sharpen the pencil tip to a right angle and, applying a force of 1KG, draw an 8CM straight line on the paint surface at a 45-degree angle.
Cross-cut Test	No more than 5% paint should peel off the tested surface.
Paint Compliance	The paint used must be accompanied by a corresponding report and comply with ROHS regulations.

Other Surface Treatments

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