HLS Coatings （Shanghai）Co.Ltd Cases

Project Background A cathodic electrodeposition (CED) line reported patchy peeling, pinholes and low film thickness on wet films during air blow-off. Pretreatment and main bath parameters looked normal, so the investigation focused on the one factor that governs redissolution behaviour: the balance ...

Project Background A coatings customer supplying several industries — general industrial finishing, automotive and architectural steel — received inconsistent impact resistance results between its own laboratory and customer laboratories. The same paint film passed GB/T 1732 in-house but was ...

Project Background An automotive body cathodic electrodeposition (CED) line needed to switch to a coating from a different supplier because of tightening quality requirements and cost pressure. Instead of draining and refilling the tank, the plant chose tank blending — a method widely adopted in ...

After the initial filling of an electrophoretic tank, a large quantity of electrophoretic coating is present in the tank. Following tank filling, aged electrophoretic coating is consumed regularly on a daily basis, and fresh electrophoretic coating is replenished to maintain stable solids content ...

The application performance and final film quality of waterborne coatings are highly dependent on and strictly controlled by the temperature and humidity conditions during application. Improper control will easily lead to defects such as poor drying, insufficient adhesion, blistering and cracking. ...

During electrophoretic coating, rational control is mainly achieved by maintaining a proper pH value to regulate hydrogen ion (H⁺) concentration, an appropriate organic solvent content, as well as suitable rinsing duration and rinsing pressure. pH Value Electrophoretic bath: The pH of normal ...

In weakly alkaline anodic electrophoretic coating systems, neutralizers are among the key additives that maintain coating stability and guarantee film performance. Their functions run through the whole process of coating storage, bath maintenance and electrodeposition. They directly determine the ...

Particle size distribution is one of the core factors affecting the application performance and final decorative effect of waterborne multi-color coatings. It directly governs sprayability, color particle stability, color uniformity and film texture. This article examines how varying particle size - ...

Microbial contamination is one of the most underestimated challenges in electrophoretic coating (e-coat) lines. When bacteria and fungi proliferate in the bath, they form flocculent or viscous substances, block pipelines and control valves, impair electrical conductivity and ultimately degrade ...