Stratification of Electroplating Additives is a common headache across manufacturing sectors, but it doesn’t have to spell disaster for your production. Whether you’re in electronics, automotive plating, or hardware manufacturing, knowing how to tackle this issue safely can save time, reduce waste, and keep your plating quality consistent. Let’s break down why stratification happens, how to fix it, and answer key questions from industry professionals.
PCB factories rely on precise additive blends for uniform copper plating in micro-vias. When leveling additives stratify—often due to temperature fluctuations in storage—the upper layer loses active components, leading to uneven deposition and increased PCB failure rates. A Shenzhen-based electronics firm once faced 15% more defects after using stratified additives. By adopting proper handling methods, they cut such issues by 90%.
Automotive part manufacturers using corrosion-resistant additives often deal with stratification in large 200L drums. When chrome-free Eco-Friendly Additives separate, the bottom layer becomes overly concentrated, causing blistering on plated components during salt spray testing. A European car parts supplier avoided costly rework by training staff to address stratification before adding additives to plating tanks.
Sanitary ware makers using brightening additives frequently encounter stratification from long-term storage. Formaldehyde-free plant-derived additives, when layered, result in inconsistent mirror finishes on faucets—some parts shine while others look dull. A bathroom fixture brand solved this by integrating stratification checks into their pre-production routine.
A: It’s usually down to three factors: different densities of components in the blend, temperature changes (hot storage makes components separate faster), and prolonged inactivity (additives sitting unused for weeks). Even high-quality eco-friendly additives can stratify if stored improperly.
A: Never mix without checking! First, ensure the additive hasn’t expired. Then, use a clean, non-sparking tool (like a plastic stirrer) to mix gently—avoid vigorous stirring that creates foam, which ruins active ingredients. For large drums, use a low-speed electric mixer.
A: Most can, if handled early. Test a small amount first: add the mixed additive to a test tank and check plating results (e.g., adhesion, brightness). If it meets standards, it’s safe to use. If not, discard it—using faulty additives costs more than replacing them.
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