Customer Background
A manufacturer of hydraulic components supplied to domestic markets and exported internationally. Components manufactured from Mild Steel (MS) and Cast Iron (CI) require thorough degreasing post-machining before final treatment and export packaging. Both MS and CI are highly susceptible to flash rust formation if moisture is not controlled and rust protection is not applied immediately post-cleaning.
The Challenge
- Complete removal of machining oils, coolant residues, and metal fines from complex component geometries
- Prevention of flash rust on CI and MS surfaces immediately after cleaning — critical for export quality
- Short process time compatible with production line speed
- Export-ready components with zero surface deterioration or corrosion
- Environmental and regulatory compliance for international export markets
REFA Solution – REFA DH
REFA recommended REFA DH — an advanced alkaline degreaser with an inbuilt rust prevention additive specifically formulated for MS and CI components. REFA DH eliminates the need for a separate rust prevention dip immediately post-cleaning, saving both process time and chemical cost.
Results
- Complete removal of machining oils, coolant residues, and metal fines from all component surfaces including complex geometries
- Zero flash rust observed on MS and CI components post-cleaning — inbuilt rust additive in REFA DH provided effective temporary protection
- Zero surface damage, deterioration, or corrosion observed on any metal surface
- Components fully export-ready after RPO application — meeting international quality and cleanliness standards
- Process efficiency maintained — 3 to 5 minute dip time compatible with production line requirements
- Consistent results across both ultrasonic and spray-jet cleaning machines
- Ongoing regular supply — REFA DH continues to be used as a standard cleaning chemical at that manufacturer’s facility.