In alkaline cleaning processes in fields such as metal processing and parts manufacturing, excessive foam is a common and troublesome problem. Excessive foam not only reduces the effective volume of the cleaning tank, leading to lower utilization of the cleaning agent, but also seriously affects the contact effect of spray or immersion cleaning, resulting in incomplete cleaning. In addition, foam overflow may contaminate the working environment, increase subsequent treatment costs, and even affect the continuous and stable operation of the production line.
Addressing this pain point, the Chemi Tech R&D team conducted an in-depth analysis of the foam generation mechanism of alkaline cleaning systems. We found that in a complex environment with high temperature, high alkalinity, and surfactants, traditional defoamers often face problems such as rapid dissolution, fast decay of foam-breaking efficiency, or poor compatibility with the system, and cannot provide durable and stable foam control.
To this end, Chemi Tech has launched a high-performance defoamer series specifically for alkaline cleaning environments. The core of our solution is: First, carefully select specially structured polyether and modified silicone materials as the base to ensure that the defoamer maintains chemical stability under strongly alkaline conditions and is not easily decomposed. Second, by optimizing the molecular weight distribution and the hydrophilic-lipophilic balance, the defoamer can quickly penetrate and destroy the foam film while remaining efficient throughout the entire cleaning cycle. Finally, the product has passed strict compatibility tests and has good compatibility with various common alkaline cleaning agents, without affecting the core functions of the main cleaning agent such as detergency and degreasing.
The specific application steps are clear and simple: Step one, based on the total alkalinity of the cleaning tank liquid, the temperature, and the severity of the foam, select a defoamer model recommended by Chemi Tech. Step two, at the same time the cleaning agent is added or in the early stage of foam generation, add the recommended dosage (usually 0.1%-0.3%) directly into the tank liquid. Step three, stir gently or rely on the circulation system to disperse it evenly. The defoamer will act quickly, suppressing the generation of new foam and eliminating existing foam. In subsequent production, only a small amount needs to be replenished regularly to maintain a long-lasting foam-free state.
We once helped an enterprise engaged in precision part processing solve the problem of rampant foam on its alkaline degreasing line. The production line used a high-temperature alkaline cleaning liquid, and foam often overflowed the tank, causing the efficiency of the automatic spray system to drop by about 30% and requiring frequent shutdowns for cleaning. After adopting a specific Chemi Tech defoamer model, the foam was significantly controlled within ten minutes of addition, the effective working volume of the tank was restored, and the uniformity of spray coverage improved. The production line achieved 8 hours of continuous stable operation, the foam overflow problem was basically eliminated, and the cleaning agent consumption was reduced by about 15% due to the improved efficiency. The customer expressed high recognition of the durability of the defoaming effect and the zero negative impact on cleaning quality.
Choosing the Chemi Tech alkaline cleaning defoamer means you will gain reliable, efficient, and economical technical support. We are committed to helping customers optimize cleaning processes, improve production efficiency, and ultimately reduce overall operating costs. Contact our technical team for product recommendations and technical consultation for your specific working conditions.