Slight Rust Stain Treatment: For surface rust or minor rust marks, chemical cleaning is the preferred method:
1. Acidic Cleaning Agents: Use dilute hydrochloric acid or sulfuric acid solutions for chemical cleaning. Strict control of concentration and contact time is necessary. This method poses a risk of corrosion to the inner wall of stainless steel; passivation treatment is required after cleaning to restore the protective layer on the metal surface.
2. Composite Cleaning Process: For organic contaminants (such as grease and dye clumps), a composite cleaning process using sulfuric acid powder + liquid alkali + emulsifier is recommended. The rust stains are decomposed through a saponification reaction.
Severe Rust Stain Treatment: If the rust stains have formed a stubborn scale layer or are accompanied by equipment deposits, a more effective cleaning solution is required:
1. High-Penetration Cleaning Agents: Use high-penetration polymer cleaning agents containing hydrogen peroxide, ammonium fluoride, etc., combined with an oxalic acid buffer system and organic acid corrosion inhibitors. pH testing and metal surface protection treatment are required after cleaning.
2. Professional Descaling Technology: For "concrete-grade" rust spots such as mixed metal oxides, refer to the industry-innovative SRS descaling process, such as the SRS-03 Black Diamond Descaling Solution, which uses a compound descaling agent for precise removal.
Daily Rust Prevention Maintenance
Preventing rust regeneration is key:
1. Regular Cleaning: Dye vats should be separated into dark, medium, and light colors using dedicated machines and cleaned weekly to avoid cross-contamination.
2. Water Quality Management: Use soft water to prepare dye solutions and add chelating dispersants to remove iron and calcium from the water to prevent rust formation.
3. Equipment Inspection: Inspect key components such as guide rails and hydraulic systems daily, and promptly clean coolant and iron filings to prevent corrosion.
Operating Precautions
Safety Protection: Wear protective equipment during chemical cleaning to avoid contact with skin and eyes.
Equipment Protection: Avoid using physical descaling methods such as steel brushes and grinding wheels to prevent damage to the internal walls of the equipment.
