Residue & Rework
Conventional cleaners struggle with heavy-duty oils. Residual white spots or oil marks after drying compromise coating adhesion and elevate scrap rates.

Surface Treatment & Protection Fluid Solutions
Centered on process-chain integration, we build a stable interfacial system from cleaning to protection and pre-paint treatment, ensuring every surface state is controllable, repeatable, and verifiable.
Process Challenges
When cleaning, corrosion protection, and pre-paint treatment are optimized independently, discontinuous interfaces, uncontrolled residues, and protection failures become key sources of quality variation.
Conventional cleaners struggle with heavy-duty oils. Residual white spots or oil marks after drying compromise coating adhesion and elevate scrap rates.
In humid environments or due to handling, machined parts are prone to micro-rust during transit, jeopardizing assembly accuracy.
Long-term rust preventive oils are thick and hard to clean; thin oils fail to withstand salt spray during ocean transport.
Legacy treatments containing phosphorus or nitrites face stringent wastewater treatment demands and VOC emission limits.
KERUN Solution Approach
Designed for heavy oil and particulate contaminants, our eco-friendly aqueous cleaning system utilizes interfacial activity technology to aggressively strip impurities from deep within the pores. We ensure absolute substrate cleanliness, providing a flawless foundation for subsequent processes and preventing coating blisters and delamination.
Moving beyond traditional oil films, we employ VCI (Vapor Corrosion Inhibitor) and nano-rust prevention technologies. Molecular-level adsorption creates a dense protective barrier that blocks moisture and oxygen pathways. With superior water displacement properties, we guarantee up to 24 months of static preservation, even in high-humidity environments.
Utilizing silane technologies, we construct a micro-crystalline conversion layer on the metal surface. This process not only removes oxidation but creates a dense "anchor pattern" structure, boosting coating adhesion by up to 300%. It significantly enhances salt spray resistance, ensuring the finish remains durable and pristine.
Monitoring, maintenance, replenishment, and service records help stabilize long-term surface treatment and protection performance.
Product Systems
KERUN recommends surface treatment & protection product systems according to material, previous process, surface condition, corrosion target, protection duration, downstream coating or assembly requirements, and storage environment.
Typical Applications
Surface treatment fluid performance is important where cleanliness, corrosion protection, and downstream compatibility determine final product quality.

Share your material, current surface condition, previous process, downstream process, corrosion target, and storage or transport conditions. KERUN’s technical team can help recommend a suitable surface treatment system.